| ADVICS CO., LTD. Patent applications |
| Patent application number | Title | Published |
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| 20120109464 | MOMENTUM CONTROL APPARATUS - The momentum control apparatus includes: an optimal feedback gain obtaining part for obtaining a plurality of optimal feedback gains used when each of the plurality of actuators is independently actuated to feedback control the momentum of the controlled object; and a feedback gain setting part for extracting a minimum feedback gain out of the plurality of optimal feedback gains obtained by the optimal feedback gain obtaining part as a feedback gain of a control system. | 05-03-2012 |
| 20120109461 | LATERAL MOTION CONTROL APPARATUS FOR A VEHICLE - A lateral motion control apparatus includes a target value obtaining unit, a control amount calculation unit, a steering intent determination unit that determines whether a driver of the vehicle is steering with intent, and a control object control unit that controls the control object so as to control the control object based on the control amount when the driver is not steering with intent, and to stop the control of the control object when the driver is steering with intent. The steering intent determination unit includes a steering operation amount obtaining unit and a threshold value setting unit that sets a threshold value for the steering operation amount based on the target value, and determines whether or not the driver is steering with intent by comparing the magnitude of the steering operation amount with the threshold value. | 05-03-2012 |
| 20120109460 | VEHICLE DYNAMIC CONTROL APPARATUS AND VEHICLE DYNAMIC CONTROL SYSTEM USING THE SAME - A vehicle dynamic control apparatus is designed to control a plurality of controlled objects according to a request value of a first parameter from an application associated with motion of a vehicle in a same direction to fulfill the request value of the first parameter. An availability obtainer obtains an availability corresponding to a controllable range of a second parameter of each of the plurality of controlled objects, the second parameter being associated with motion of the vehicle in the same direction. A selector determines an order of the plurality of controlled objects to be controlled based on the availability of the second parameter of each of the plurality of controlled objects, and selects at least one of the plurality of controlled objects to be controlled in accordance with the determined order. | 05-03-2012 |
| 20120109416 | LATERAL MOTION CONTROL APPARATUS FOR A VEHICLE - The lateral motion control apparatus calculates lateral motion control amounts for a plurality of control targets that operate cooperatively in order to change the lateral motion amount of the vehicle based on a target value for the lateral motion amount of the vehicle, and control the plurality of control targets based on the calculated lateral motion control amounts. Meanwhile, it is determined whether or not the control of the plurality of control targets is to be stopped. When it has been determined that the control of the plurality of control targets is to be stopped, lateral motion degeneration control amounts are determined for each of the plurality of control targets so that the lateral motion control amounts of the plurality of control targets degenerate starting at that time, and the plurality of control targets are controlled based on the determined lateral motion degeneration control amounts. | 05-03-2012 |
| 20120109415 | LATERAL MOTION CONTROL APPARATUS FOR A VEHICLE - A lateral motion control apparatus for a vehicle includes a control stop determination unit that determines whether or not to stop the control for the control target by the control target control unit based on a steering operation amount inputted by a driver of the vehicle, and a degeneration control amount determination unit that determines a degeneration control amount for the control target such that the control amount for the control target degenerates after the time when the control stop determination unit has determined that the control for the control target is to be stopped. When the control stop determination unit has determined that the control for the control target is to be stopped, the control target control unit controls the control target based on the degeneration control amount determined by the degeneration control amount determination unit. | 05-03-2012 |
| 20120109414 | VEHICLE DYNAMIC CONTROL PLATFORM BETWEEN APPLICATION AND CONTROLLED OBJECT - In a vehicle dynamic control platform arranged between a controlled object and an application, an availability obtainer obtains an availability corresponding to a controllable range of a second parameter of the controlled object, and outputs the availability of the second parameter of the controlled object to the application. The application is programmed to output the target value of the first parameter based on the availability of the second parameter of the controlled object. A comparator compares the target value of the first parameter with the availability of the second parameter when the target value of the first parameter is outputted from the application, and determines, based on a result of the comparison, whether to perform dynamic control of the vehicle by controlling the controlled object. | 05-03-2012 |
| 20120109412 | VEHICLE MOVEMENT CONTROL APPARATUS AND VEHICLE MOVEMENT CONTROL METHOD - A vehicle movement control apparatus for setting control requirement values for a plurality of control objects controlling movement of a vehicle, if control target values for movement of the vehicle are input, the apparatus includes: a first requirement value setting unit setting a first control requirement value for a first control object; a first estimating unit acquiring a first movement estimated value if the first control object is activated based on the first control requirement value; a calculating unit calculating an estimated delay amount which is a shortage amount generated based on response delay of the first control object; a second requirement value setting unit setting a second control requirement value for a second control object, based on the result of the calculation; and a second estimating unit acquiring a second movement estimated value if the second control object is activated based on the second control requirement value. | 05-03-2012 |
| 20120109411 | VEHICLE DYNAMIC CONTROL APPARATUS AND VEHICLE DYNAMIC CONTROL SYSTEM USING THE SAME - A vehicle dynamic control apparatus is designed to control a plurality of controlled objects based on a first parameter associated with a motion of a vehicle in a same direction to fulfill a request value of a second parameter associated with the motion of the vehicle in the same direction and outputted from a control requester. The vehicle dynamic control apparatus includes an availability obtainer configured to obtain an availability of the first parameter of each of the controlled objects, and to output the availability of the first parameter of each of the controlled objects to the control requester. | 05-03-2012 |
| 20120109410 | VEHICLE MOTION CONTROL APPARATUS - A vehicle motion control apparatus configured to control a plurality of control objects in a same direction of vehicle motion control to achieve a requested control amount is provided. The vehicle motion control apparatus includes a control object selection unit which is configured to determine priority of the control objects used for the vehicle motion control based on a priority determination condition, to select a control object from among the plurality of control objects. The control object selection unit includes a control object selection timing determination section configured to detect a change in the priority determination condition, and cause the control object selection unit to reselect a control object at a timing of the change detection as a selection timing. | 05-03-2012 |
| 20120099986 | LIQUID SEAL, SHAFT SEAL APPARATUS AND PUMP APPARATUS USING THE SAME - A liquid seal has an annular lip portion and an annular fixing portion to be fixed to an inner peripheral surface of a shaft hole, in which the lip portion is connected to the fixing portion and is provided so that a tip thereof is extended in an axial direction, a spring pressing a seal lip against an outer periphery of the rotation shaft is fitted onto the lip portion. The seal lip forms a mountain shape in which an edge of the apex in the cross section, which is cut along a plane passing through a center axis of the seal, protrudes to the inner diameter side, and the pressure center of the seal lip due to the spring is disposed between the tip side of the lip portion further than the edge of the apex of the mountain of the seal lip in the axial direction. | 04-26-2012 |
| 20120080936 | SHAFT SEALING APPARATUS, PUMP APPARATUS AND BRAKE HYDRAULIC PRESSURE CONTROL DEVICE USING SAME - A shaft sealing device comprising: a first member; a second member provided with a through-hole through which the first member passes; a sealing member configured to seal a gap between the through-hole and the first member; a rotation restricting part restricting relative rotation between the first and second members; and an axial displacement restricting part restricting the axial displacement of the sealing member. The rotation restricting part includes a first contact portion provided on the first member, a second contact portion provided on the sealing member and an inclined surface included on the first contact portion. The axial displacement restricting part includes a stopper surface. When the sealing member rotates in one direction relative to the second member by being dragged by the first member, the sealing member contacts the stopper surface to restrict the axial displacement of the sealing member. | 04-05-2012 |
| 20120074769 | HYDRAULIC BRAKE APPARATUS FOR VEHICLE - A hydraulic brake apparatus for a vehicle is provided. The hydraulic brake apparatus includes a master cylinder, a high hydraulic pressure source, a brake assist mechanism, a liquid reservoir, an electronic control device, a hydraulic control device and is configured such that the master cylinder is actuated by a force assisted by the brake assist mechanism to generate a hydraulic pressure and a braking force according to the hydraulic pressure is applied to a wheel of the vehicle. The hydraulic brake apparatus further includes driving pressure reducing valve which is configured such that when a hydraulic pressure in a master pressure input port is higher than that in the driving pressure input port by a predetermined value, the hydraulic brake apparatus is actuated based on the pressure difference to open a hydraulic pressure discharge path extending from a driving hydraulic pressure chamber to the liquid reservoir. | 03-29-2012 |
| 20120074768 | VEHICLE BRAKE SYSTEM - Vehicle brake system comprises a hydraulic brake device, a regenerative brake device to drive wheels driven by a generator-motor and a brake control device for cooperatively controlling the hydraulic brake force and the regenerative brake force in response to an operation amount of a brake operation member. This vehicle brake system further includes a differential amount calculating portion calculating a differential amount by subtracting a regeneration execution brake force obtained by execution of the generator-motor from a regeneration request brake force, a regenerative range judging portion for judging whether the regeneration request brake force is within a range of a re-generable brake force which is executable by the generator-motor and a hydraulic pressure restricting portion for restricting increase of the hydraulic brake force when the differential amount is a positive value and the regeneration request brake force is within the range of the re-generable brake force. | 03-29-2012 |
| 20120074767 | VEHICLE BRAKE SYSTEM - A vehicle brake system is provided with a hydraulic brake device, a regenerative brake device incorporating a generator motor, and a brake control device. The control device includes a section for calculating a driver target brake force for each wheel corresponding to a manipulation amount of a braking manipulation member, a section for enabling the brake control device itself to set compensation brake forces for respective wheels, a section for selecting a larger one of the driver target brake force and the compensation brake force for each wheel and for subtracting a base hydraulic brake force from the selected brake force to set differences for respective wheels as compensated target brake forces for the wheels, and a section for controlling the distribution of the compensated target brake force for each wheel to a controlled hydraulic brake force for each wheel and a regenerative brake force for each driving wheel. | 03-29-2012 |
| 20120070222 | SHAFT COUPLING APPARATUS - A shaft coupling apparatus is provided in which a cylindrically-shaped hole is provided on a leading end surface of a shaft, the hole having a central axis that is different from a rotational central axis of the shaft, and a cylindrically-shaped hole is provided on a leading end surface of a shaft, the hole having a central axis that is different from a rotational central axis of the shaft. The shafts are coupled by pressure fitting a cross-sectionally circular pin in the hole and by loosely fitting the pin in the hole, the pin corresponding to an inner diameter of the hole and the hole. | 03-22-2012 |
| 20120068559 | ROTATING SHAFT SUPPORT APPARATUS AND MAGNETIC MOTOR HAVING THE SAME - A apparatus is provided in which, in a state before being assembled to a drive target, one end of a rotating shaft is not supported by a bearing, and in this state, the rotating shaft is pressed to the side of a bracket by coil springs and thus centering of the rotating shaft is maintained. In this way, axial run-out of the rotating shaft before a magnetic motor is assembled to the drive target is inhibited. Thus, damage and deterioration in assembly efficiency as a result of axial run-out of the rotating shaft can be inhibited, such as deterioration in assembly efficiency caused by adhesion between a magnet and coils wound on an armature core, for example. | 03-22-2012 |
| 20120065859 | ROLLOVER SUPPRESSION CONTROL APPARATUS AND ROLLOVER SUPPRESSION CONTROL METHOD - A rollover suppression control apparatus and method are provided. The apparatus includes a rollover state value detection unit which detects a rollover state value indicating that a vehicle is under rollover tendency, a braking force applying unit which performs a rollover suppression control of applying braking force to a wheel of the vehicle to suppress the rollover thereof when the detected rollover state value is greater than the control threshold value, a understeer state detection unit which detects whether a traveling state of the vehicle is a understeer state or a non-understeer state, and a setting unit which sets a first control threshold value as the control threshold value when the traveling state is detected as the non-understeer state, and which sets a second control threshold value greater than the first control threshold value as the control threshold value when the traveling state is detected as the understeer state. | 03-15-2012 |
| 20120046831 | VERTICAL LOAD CONTROL APPARATUS FOR A VEHICLE - A first stabilizer (SBr) is disposed on an axle for driving wheels, a second stabilizer (SBf) is disposed on a different axle from the axle for driving wheels, a stabilizer control unit (RT, FT) is provided for adjusting torsional rigidity of the first stabilizer and second stabilizer, a turning state amount obtaining unit is provided for obtaining a turning state amount of the vehicle, and an accelerating operation amount obtaining unit is provided for obtaining an accelerating operation amount operated by a vehicle driver. Based on these obtained results, the torsional rigidity of at least one of the first stabilizer and second stabilizer is adjusted by the stabilizer control unit, when the turning state amount of the vehicle is equal to or more than a predetermined turning state amount, and the accelerating operation amount is equal to or more than a predetermined accelerating operation amount. | 02-23-2012 |
| 20120024641 | DISC BRAKE APPARATUS - An object is to stably exhibit a two-stage spring characteristic of a plate spring for restraining the generation of a clonk noise in a disc brake apparatus for use in a vehicle. A plate spring | 02-02-2012 |
| 20120022773 | ENGINE AUTOMATIC STOP AND RESTART CONTROL APPARATUS - An engine automatic stop and restart control apparatus is provided. The apparatus includes a control unit which stops and restarts an engine, an actual axle torque change speed calculation unit which calculates change speed in actual axle torque that is actually generated when the engine is restarted, an ideal axle torque change speed calculation unit which calculates change speed in ideal axle torque that corresponds to engine torque generated by the engine, a change speed difference calculation unit which calculates a change speed difference that is a difference between the change speed in actual axle torque and the change speed in ideal axle torque, and a vibration suppression control unit which executes a vibration suppression control for applying braking torque based on the change speed difference. | 01-26-2012 |
| 20120018655 | ELECTROMAGNETIC VALVE - A conical portion is provided at the tip of a main valve body. When brake fluid hits the conical portion of the main valve body, the brake fluid is bounced back at substantially the same angle at which it hits the conical surface of the conical portion. However, the movement direction of the bounced brake fluid is not largely inclined from the direction that the brake fluid is to be caused to flow. Therefore, the flow resistance is reduced. Further, generatrices of the conical portion agree with tangent lines to the spherical surface and the boundary area between the spherical surface and the conical surface is continuous without a step. Therefore, the brake fluid is rectified by these surfaces when it flows. It is possible to reduce the amount of fluctuation in pressure differential relative to fluctuation in the flow rate of brake fluid. | 01-26-2012 |
| 20120013174 | BRAKE APPARATUS - A brake apparatus includes: a master cylinder that forms a driving fluid pressure chamber, which drives master pistons as brake fluid is supplied and discharged; a pressure adjusting part adjusting a driving fluid pressure of the driving fluid pressure chamber; a reaction force generator that forms a reaction force chamber and that is configured to generate a reaction force fluid pressure in the reaction force chamber in accordance with an operating amount of the brake operation member; a brake fluid path, which connects the reaction force chamber to the driving fluid pressure chamber, and a valve device configured to block, at a current-on state, flowing of the brake fluid, and that communicates, at a current-off state, the reaction force chamber to the driving fluid pressure chamber through the brake fluid path to enable the flowing of the brake fluid. | 01-19-2012 |
| 20120001107 | Solenoid valve - A solenoid valve has a tapered valve seat disposed between a first flow passage and a second flow passage, a reduced diameter side of the valve seat that is connected with the first flow passage, and a valve body having a closing portion that reduces its diameter toward a tip facing the valve seat. The first flow passage and the second flow passage are connected/disconnected by sliding the valve body for contacting/detaching the closing portion to the valve seat, and a groove is disposed on the closing portion facing the direction of a fluid flow. | 01-05-2012 |
| 20110307154 | BRAKING/DRIVING CONTROL APPARATUS FOR VEHICLE - A braking/driving control apparatus for a vehicle includes a basic control unit which calculates and outputs a target axle torque based on a target acceleration and a driving resistance of the vehicle and which determines an axle torque for a power train of the vehicle and an axle torque for a braking apparatus of the vehicle based on the calculated target axle torque, a sliding-down prediction determining unit which determines whether there is a possibility that the vehicle slides down rearwards on an uphill road, and a sliding-down preventing process executing unit which performs a process for reducing a possibility that the vehicle slides down, based on a determination result of the sliding-down prediction determining unit. After the sliding-down prediction determining unit determines that there is the possibility, the sliding-down preventing process executing unit controls the basic control unit to calculate and output the target axle torque so as to reach an axle torque which is obtained by reducing a predetermined positive amount form an estimated value of an axle torque necessary for the vehicle to achieve the target acceleration against the driving resistance. | 12-15-2011 |
| 20110285199 | BRAKE DEVICE - A brake device includes: a mechanical pressure regulating part having a high-pressure port, a low-pressure port, a pilot pressure input port, and an output port which outputs fluid pressure corresponding to the pressure supplied to the pilot pressure input port by fluid pressures supplied to both of the high- and low-pressure ports, to a chamber for a master piston; a high-pressure source connected to the high-pressure port and the pilot pressure input port; a low-pressure source connected to the low-pressure port and the pilot pressure input port; and an electrically-operated pilot pressure generating part which includes control valves for controlling flows of the brake fluid between the high-pressure source and the pilot pressure input port, and between the low-pressure source and the pilot pressure input port, respectively, and which outputs desired fluid pressure to the pilot pressure input port by controlling flow of the brake fluid with control valves. | 11-24-2011 |
| 20110278108 | PARKING BRAKE CONTROL DEVICE - A parking brake control device performs a releasing control with good precision by more precisely maintaining clearance between a friction-applying member and a friction-applied member. During a releasing control, a timing at which a braking force generated by an electric parking brake | 11-17-2011 |
| 20110256981 | APPARATUS FOR CONTROLLING AUTOMATIC STOP AND RESTART OF ENGINE - An apparatus for controlling automatic stop/restart of an engine, includes: an automatic-stop/restart-control-unit which stops/restarts the engine; a brake-pressure-detection-unit which detects brake pressure in a brake system and controls the brake pressure to perform anti-skid control; a first-determination-unit which determines whether the brake pressure is not less than a first-threshold; a second-determination-unit which determines whether the brake pressure is not less than a second-threshold larger than the-first threshold; a stop-allowing-unit which allows the automatic-stop/restart-control-unit to stop the engine while the engine operates, when the first-determination-unit determines that the brake pressure is not less than the first-threshold and the second-determination-unit determines that the brake pressure is less than the second-threshold; and a stop-inhibiting-unit which inhibits the automatic-stop/restart-control-unit from stopping the engine while the engine operates, when the-first-determination-unit determines that the brake pressure is less than the first-threshold and the second-determination-unit determines that the brake pressure is not less than the second-threshold. | 10-20-2011 |
| 20110256980 | VEHICLE CONTROL APPARATUS - A vehicle control apparatus includes: an automatic-stop-and-restart-control-unit stopping/restarting an engine, a brake-fluid-pressure-control-unit controlling wheel-cylinder-pressure using a brake-system, which intensifies brake-manipulation-force by a brake-booster to cause master-cylinder-pressure in a master-cylinder while the engine operates, and which transfers the master-cylinder-pressure to wheel-cylinders to cause the wheel-cylinder-pressure, the brake-system including an actuator automatically increasing pressure in the wheel-cylinders irrespective of the brake-manipulation-force; a negative-pressure-detection-unit which detects the vacuum-pressure; a first-determination-unit which determines whether the vacuum-pressure is not more than a first threshold while the engine stops, a restarting-unit which allows the automatic-stop-and-restart-control-unit to restart the engine when the first-determination-unit determines that the vacuum-pressure is not more than the first threshold; a second-determination-unit which determines whether the vacuum-pressure is not more than a second threshold; and a braking-boost-unit which allows the brake-fluid-pressure-control-unit to automatically increase the pressure in the wheel-cylinders when the second-determination-unit determines that the vacuum-pressure is not more than the second threshold. | 10-20-2011 |
| 20110250976 | COUPLING DEVICE FOR ROTATIONALLY COUPLING DRIVE SHAFT AND DRIVEN SHAFT - A coupling device comprises a drive portion formed on a drive shaft and having a drive wall surface extending in the direction of a rotation axis; a driven portion formed on a driven shaft and having a driven wall surface extending in the direction of the rotation axis; a convex curved portion formed on one of the drive wall surface and the driven wall surface and extending along the rotation axis at a position spaced from the rotation axis as viewed in the direction of the rotation axis; and a concave curved portion having a smaller curvature than that of the convex curved portion and formed on the other of the drive wall surface and the driven wall surface to contact the convex curved portion and extending along the rotation axis at a position spaced from the rotation axis as viewed in the direction of the rotation axis. | 10-13-2011 |
| 20110246017 | VEHICLE MOTION CONTROLLER - If an actual lateral acceleration is equal to or greater than a target lateral acceleration Gth and at least one of a steering angle lateral acceleration Gys and a yaw-rate lateral acceleration Gyy is less than the target lateral acceleration Gth, the increase of the W/C pressure of the vehicle to be controlled is inhibited. Accordingly, it is possible to suppress the increase in the roll angle by actively generating the understeering to suppress rolling and to early suppress an increase in understeering if the increase in understeering is made to be unnecessary. | 10-06-2011 |
| 20110241417 | BRAKING APPARATUS - A braking apparatus according to an embodiment includes: a fluid pressure circuit that is provided between a master cylinder and a wheel cylinder, and that includes both a first system flow channel connecting a reservoir and at least one of the plurality of wheel cylinders, and a second system flow channel connecting at least one of the plurality of wheel cylinders and the master cylinder, and that forms a flow channel for supplying operating fluid to each of the wheel cylinders; and a pump provided in the first system flow channel and driven by the motor to increase the fluid pressure of the operating fluid to be supplied from the reservoir to the wheel cylinders. A control unit controls the driving state of the pump in order to drive, when a predetermined fail standard for braking control has been satisfied, the motor in accordance with the information detected by an operating state detection means, and executes fail-safe control for providing braking force by supplying the operating fluid discharged from the pump to the fluid pressure chamber in the master cylinder. | 10-06-2011 |
| 20110240418 | VEHICLE BRAKE CONTROL DEVICE - When an EPB performs a locking operation of operating a parking brake, a pressure-decreasing limit control is performed until a driving shaft contacts a piston. Accordingly, even when the time of decreasing the W/C pressure by a service brake is equal to the time of brining the driving shaft having moved by the motor driving of the EPB into contact with the piston are equal to each other, it is possible to prevent the piston, which has been urged to the driving shaft with the decreasing of the W/C pressure, from colliding with the driving shaft with a great impact, thereby preventing a large load from being applied to the driving shaft. | 10-06-2011 |
| 20110233993 | VEHICULAR BRAKE CONTROL DEVICE FOR CONTROLLING BRAKE FLUID PRESSURE - A vehicular brake control device is installed in a vehicle and includes an actuator and a control unit. The actuator controls brake fluid pressures applied respectively to a first wheel cylinder for a front wheel and a second wheel cylinder for a rear wheel. The actuator includes a first pump for the front wheel, a second pump for the rear wheel, and a motor for driving the first pump and the second pump. The first pump sucks brake fluid and discharges the brake fluid to the first wheel cylinder. The second pump sucks brake fluid and discharges the brake fluid to the second wheel cylinder. In addition, a discharge volume of the first pump is larger than a discharge volume of the second pump. | 09-29-2011 |
| 20110208398 | VEHICLE CONTROL DEVICE AND METHOD OF CONTROLLING VEHICLE - A vehicle control device for controlling the driving force and the braking force that is applied to a vehicle to approach a target wheel speed includes a plurality of determination parts that determine the wheel speed at a corresponding wheel; and a calculation part that calculates a valid wheel speed threshold for each wheel based on determined wheel speeds. The vehicle control device also includes a decision part that decides whether wheel speed is valid depending on whether the valid wheel speed threshold calculated for each wheel is below a specific speed threshold value, which is below the target wheel speed, and an estimation part that estimates the vehicle speed using the wheel speeds that are determined as being valid. | 08-25-2011 |
| 20110198165 | BRAKING CONTROL APPARATUS FOR VEHICLE - A braking control apparatus for a vehicle includes four wheel braking apparatuses for applying a braking torque to wheels, a first hydraulic pressure generating apparatus generating a hydraulic pressure, a vacuum booster generating an assist force for assisting a breaking operation, a first hydraulic circuit, a second hydraulic circuit, a second hydraulic pressure generating apparatus generating an assist hydraulic pressure that is added to the hydraulic pressure, a detecting portion for detecting a braking operation variable, a target value determining portion for determining a first assist hydraulic pressure target value and a second assist hydraulic pressure target value to be both greater than zero over a range where the braking operation variable is greater than a predetermined value at which the assist force by the vacuum booster is started, and a pressure regulating portion for regulating the assist hydraulic pressure to mach the assist hydraulic pressure target value. | 08-18-2011 |
| 20110196579 | Apparatus for controlling motion of vehicle - A vehicle motion controlling apparatus has an allocating unit for selecting steering or braking control mainly performed in cooperative control, receiving a desired value of vehicle turning motion, allocating steering and braking controls for the motion, determining main yaw rate from vehicle conditions, and determining a non-main yaw rate from difference between the desired value and the main yaw rate. Setting units set assist torque corresponding to the main yaw rate and braking torque corresponding to the non-main yaw rate when the steering control is selected and set braking torque corresponding to the main yaw rate and assist torque corresponding to the non-main yaw rate when the braking control is selected. The assist torque is generated for assisting a change of steering angle of vehicle in steering control. The braking torque is generated for applying braking force to wheel of vehicle in braking control. | 08-11-2011 |
| 20110178689 | DEVICE FOR CONTROLLING TRAVELING OF VEHICLE - After a vehicle has entered a curve, a deviation (Sch) between a target turning state quantity Td and an actual turning state quantity Ta is computed. In a stage in which Sch does not reach a predetermined value after the vehicle has entered the curve, the possibility of the vehicle traveling in the curve is judged to be low, and the reliability of the curve information Rc, Pc is judged to be low. In this case, a determination for prohibiting execution of control (So=0) is made. In a stage after Sch has reached the predetermined value, the possibility of the vehicle traveling in the curve is judged to be high, and the reliability of the curve information Rc, Pc is judged to be high. In this case, a determination for permitting execution of the control (So=1) is made. Deceleration control is started and executed only when a control start condition is satisfied, and the determination for permission is made. Accordingly, even when the control start condition is satisfied, the deceleration control is not started, if the prohibition determination is made. Thus, the reliability of the curve information based on map information on the vehicle is evaluated reliably, and the deceleration control within the curve can be prevented from being unnecessarily executed on the basis of curve information whose reliability is low. | 07-21-2011 |
| 20110175437 | BRAKE CONTROL APPARATUS - A brake control apparatus is equipped with a plurality of fluid pressure adjusting valves that have opening degrees thereof adjusted through energization control to adjust the fluid pressures, a plurality of valves that are provided in series with at least two of the fluid pressure adjusting valves are closed during stoppage of energization to hold the fluid pressures, and a brake ECU. The brake ECU controls fluid pressure adjustment achieved by supplying the fluid pressures to the wheel cylinders respectively, opening the communication valves and adjusting the opening degrees of the fluid pressure adjusting valves to adjust the fluid pressures respectively, and fluid pressure holding achieved by closing the communication valves opening the fluid pressure adjusting valves and holding the fluid pressures by means of the communication valves respectively. | 07-21-2011 |
| 20110160974 | VEHICLE STOP CONTROL DEVICE AND VEHICLE STOP CONTROL METHOD - A vehicle stop control device is provided. The device is configured to perform a stop control for stopping a vehicle by adjusting a braking force for wheels and includes a target deceleration setting unit which sets a target deceleration as a target for stopping the vehicle so as to have a smaller value as a vehicle body velocity comes closer to zero, a deceleration obtaining unit which obtains a vehicle body deceleration of the vehicle, a control unit which performs the stop control of setting the braking force to have a smaller value as a subtraction value obtained by subtracting the target deceleration from the vehicle body deceleration is greater, and causing the set braking force to be applied to the wheels; and a determining unit which determines that a road surface is an ascent road when the braking force set by the control unit is zero. | 06-30-2011 |
| 20110160963 | VEHICLE SPEED CONTROL DEVICE - A vehicle speed control device is provided. The device includes a steering device which steers left and right wheels, first and second electric motors which separately apply power to the left and right wheels, an operation amount acquisition unit which acquires an acceleration operation amount by the driver of the vehicle, a steering angle acquisition unit which acquires a steering angle which is a value between an inner wheel steering angle and an outer wheel steering angle; a vehicle speed acquisition unit configured to acquire an actual speed of the vehicle; and a control unit configured to control the first electric motor and the second electric motor on the basis of the acceleration operation amount, the actual speed, the steering angle, and a steering geometry indicating a geometric relationship between the steering angle and a turning center of the vehicle. | 06-30-2011 |
| 20110153147 | PARKING BRAKE CONTROL DEVICE - [Problem] A parking brake control device can ensure required braking force and reliably allow release even if an automatic pressurization function that increases a W/C pressure is malfunctioning, regardless of operation of a brake pedal. | 06-23-2011 |
| 20110116949 | STRUCTURE FOR COUPLING ROTARY SHAFTS AND PUMP DEVICE OF ROTARY TYPE - An object of the invention is to provide a structure for coupling two rotary shafts, which can be made smaller in size. A driving shaft for pumps is rotatably supported by a first bearing and a second bearing, while a rotary shaft of an electric motor is rotatably supported by the second bearing and a third bearing. Each one end of the driving shaft and the rotary shaft is inserted into the common second bearing, so that rotation of the rotary shaft is transmitted to the driving shaft. | 05-19-2011 |
| 20110116939 | ROTARY PUMP DEVICE AND VEHICLE BRAKE CONTROL SYSTEM - A first and a second rotary pumps are provided in a first pump casing of a pump body, which is inserted into a cylindrical recessed portion of a housing | 05-19-2011 |
| 20110115283 | SEALING STRUCTURE FOR PISTON AND PISTON PUMP AND BRAKE HYDRAULIC PRESSURE CONTROL DEVICE INCORPORATING THE STRUCTURE - A sealing structure is provided wherein an annular groove formed in a pump cylinder of a piston pump receives therein a seal ring made of a synthetic resin material and having an inner circumferential surface fluid-tightly contacting an outer circumferential surface of the pump piston and an O-ring arranged on the outer circumferential side of the seal ring and urging the seal ring radially inward. The seal ring is formed at its axial end portions with flange portions for preventing the O-ring from coming off. In the state that the seal ring and the O-ring are fitted in the annular groove, the flange portions do not receive a load from the O-ring, and a surface pressure which the seal ring applies to the outer circumferential surface of the piston at an axial center portion thereof is set to be higher than surface pressures which it applies to the outer circumferential surface of the piston at axial end portions thereof. | 05-19-2011 |
| 20110077834 | VEHICLE MOTION CONTROL DEVICE - A vehicle motion control device is provided. The vehicle motion control device includes a steering angle deviation calculating unit which calculates a steering angle deviation of the vehicle, a frictional coefficient calculating unit which calculates each of road surface frictional coefficients for a traveling road surface of four wheels; and a pressure increasing and reducing controlling unit which performs a split control including applying a pressure increasing limitation of a pressure increasing control in an anti-skid control to a front wheel at a side of the traveling road surface having higher road surface frictional coefficient between the right and left wheels based on an absolute value of the steering angle deviation such that a pressure increasing gradient in the pressure increasing control is smaller as the absolute value is larger. | 03-31-2011 |
| 20110077832 | BRAKE CONTROL APPARATUS AND MOTOR ROTATIONAL SPEED COMPUTATION METHOD USED IN SAID BRAKE CONTROL APPARATUS - There is provided a low-cost, power-saving brake control apparatus that is capable of performing control with good pressure regulation precision. The brake control apparatus has adjusting motor rotational speed computation means for causing pressurization control means to set a pressure regulation valve in a closed state and carry out an action of driving a pump at a predetermined motor rotational speed a plurality of times at different motor rotational speeds, and for computing in advance a adjusting motor rotational speed on the basis of the ratio between each of the motor rotational speeds and each of the pressure gradients for when the pressurization force of a pump driven at each of the motor rotational speeds has reached a predetermined pressure; and requested motor rotational speed correction means for correcting the requested motor rotational speed on the basis of the adjusting motor rotational speed in a case where the pressurization control means increases the pressure of the wheel cylinders and generates braking force in the wheels. | 03-31-2011 |
| 20110077798 | ESTIMATED ACCELERATION CALCULATING APPARATUS - An estimated acceleration calculating apparatus is provided. The apparatus includes a rolling resistance coefficient calculating unit which calculates a rolling resistance coefficient corresponding to a rough road level or a turning level of the vehicle; and an estimated acceleration calculating unit which calculates an estimated acceleration based on a motion equation, the motion equation expressing an equilibrium of wheel forces and including a term of the rolling resistance coefficient. | 03-31-2011 |
| 20110074207 | BRAKE DEVICE - A brake device comprising a master cylinder ( | 03-31-2011 |
| 20110071743 | BRAKE FLUID PRESSURE CONTROLLING DEVICE - A brake fluid pressure controlling device is provided that controls a brake actuator to adjust brake fluid pressure in a wheel cylinder provided to correspond to a wheel. The brake actuator includes a passage for supplying the brake fluid to the wheel cylinder, a pump that discharges the brake fluid to the passage, and an electromagnetic valve that is located in the passage and adjusts the pressure of the brake fluid flowing into the wheel cylinder. The device includes a discharge rate detecting section, a signal generating section, a noise generating section, a noise overlaying section, and an electromagnetic valve controlling section. The discharge rate detecting section detects the discharge rate of the brake fluid discharged by the pump. The signal generating section generates a command signal for controlling the electromagnetic valve. The noise generating section generates noise, the noise being an AC signal corresponding to the detected discharge rate. The noise overlaying section overlays the noise onto the command signal, thereby generating an overlaid command signal. The electromagnetic valve controlling section controls the electromagnetic valve according to the overlaid command signal. | 03-24-2011 |
| 20110070112 | PISTON PUMP ASSEMBLY - A piston pump assembly includes a first pump having a first cylinder member inserted in a piston hole of a pump housing, and a first piston inserted in the first cylinder member, and a second pump having a second cylinder member inserted in the piston hole, and an annular second piston slidably fitted in an annular groove formed in the outer periphery of the first piston, and also axially slidably inserted in the second cylinder member. The first cylinder member axially presses the second cylinder member, thereby preventing the second cylinder member from being dropped out of the piston hole. The second cylinder member has an annular seal surface in contact with a shoulder surface formed on the inner periphery of the piston hole. Strain-absorbing protrusions are formed on the end of the second cylinder member in abutment with the first cylinder member. The protrusions are compressed when they are pressed by the first cylinder member. | 03-24-2011 |
| 20110066344 | Apparatus for arbitrating plurality of control requests relating to automatic control of vehicle motion - A control request arbitration apparatus of a vehicle includes respective sections for selecting one of a plurality of position control requests generated by control request apparatuses, for converting the selected position control request to a converted speed control request, for selecting one of a plurality of speed control requests including the converted speed control request, for converting the selected speed control request to a converted acceleration control request, and for selecting one of a plurality of acceleration control requests including the converted acceleration control request. Since position/acceleration and speed/acceleration conversion sections become unnecessary in control request apparatuses, the total of these sections becomes independent of the number of control request apparatuses. | 03-17-2011 |
| 20110062906 | DEVICE AND METHOD FOR CONTROLLING MOTOR - A motor controlling device is provided that controls a brushless motor having a plurality of phases based on magnetic pole signals output by a plurality of magnetic pole signal output sections each corresponding to one of the phases. The motor controlling device includes an abnormality determining section, a signal generating section, and a motor controlling section. The abnormality determining section determines whether a magnetic pole signal output by each magnetic pole signal output section is an abnormal magnetic pole signal. When the abnormality determining section determines that at least one of the magnetic pole signals is an abnormal magnetic pole signal, the signal generating section generates a simulated signal corresponding to the abnormal magnetic pole signal based on the normal magnetic pole signals other than the abnormal magnetic pole signal and the rotational state of the brushless motor. The motor controlling section controls the brushless motor based on the simulated signal and the normal magnetic pole signals when the signal generating section generates the simulated signal. | 03-17-2011 |
| 20110062362 | HYDRAULIC DEVICE WITH SOLENOID VALVE - A hydraulic device includes a housing and a solenoid valve to be mounted to the housing. The solenoid valve includes a plunger and a plunger-mounting sleeve in which the plunger is mounted. The plunger-mounting sleeve includes a sleeve member and a sleeve flange having a flange portion and a cylindrical portion provided at the radially outer edge of the flange portion. The plunger-mounting sleeve is fixed to the housing by seating a flange portion of the sleeve flange on a shoulder formed on a mounting hole formed in the housing, press-fitting a mounting ring loosely fitted around the sleeve member into the cylindrical portion of the sleeve flange, thereby pressing the flange portion against a seating surface of the shoulder, and further wedging the cylindrical portion into the inner periphery of the mounting hole. | 03-17-2011 |
| 20110049970 | BRAKE HYDRAULIC PRESSURE CONTROL APPARATUS - A brake hydraulic pressure control apparatus includes a reservoir, a brake hydraulic pressure supply device, a hydraulic pump, a plurality of wheel cylinders, a cut valve, a plurality of pressure-increasing solenoid valves, a plurality of pressure-decreasing solenoid valves, a discharge passage including a plurality of relief passages and a circulating passage, a controlling device bringing a brake hydraulic pressure to be applied to the wheel cylinders from the hydraulic pump by disconnecting the brake hydraulic pressure supply device from the wheel cylinders by the cut valve while the pressure-increasing solenoid valves are in an open state, and bringing the brake fluid within the wheel cylinders to be circulated to the reservoir via the discharge passage by operating the pressure-decreasing solenoid valves, and a pulsation transmission decreasing device provided at the discharge passage and decreasing a transmission of a pressure pulsation generated by at least one of the pressure-decreasing solenoid valves. | 03-03-2011 |
| 20110047999 | CONTROL UNIT OF HYDRAULIC BRAKE APPARATUS FOR VEHICLE - A control unit of a hydraulic brake apparatus for a vehicle including a housing, a switching control valve, pressure increase control valves, pressure decrease control valves, a reservoir, a pump driven by a motor, a first passage, a second passage, an inner bore and a passage forming member being liquid-tightly fitted into the inner bore in order to form an extended ring-shaped passage, wherein the extended ring-shaped passage forms a part of the first passage, and the switching control valve, the pressure increase control valves and the outlet valve are connected to the extended ring-shaped passage, and a part of the second passage is formed within the passage forming member, and end portions of the part of the second passage are connected to the switching control valve and the switching valve. | 03-03-2011 |
| 20110035131 | SPEED CONTROL APPARATUS FOR VEHICLE - A plurality of position data sets representing a plurality of points on a road ahead of a vehicle are acquired, and the degree of curvature of the road at each point is computed. On the basis of the degree of curvature, a constant curvature degree section of a curve is identified, and the degree of curvature and the end position of the constant curvature degree section are determined. In order to cause the vehicle to properly pass through the curve, curve deceleration control is executed on the basis of the actual vehicle speed, a proper vehicle speed determined from the degree of curvature, and the end position of the constant curvature degree section. That is, the curve deceleration control is performed on the basis of the start point of a section of a curve having the maximum degree of curvature and the constant degree of curvature of that section. | 02-10-2011 |
| 20110035129 | MOTION CONTROL DEVICE FOR VEHICLE - A motion control device for a vehicle includes a braking means for applying a brake torque to each of a plurality of wheels of the vehicle, an avoidance control means for calculating a first target quantity, used for an avoidance control for applying the brake torque to each wheel via the braking means in order to avoid an emergency state of the vehicle, a stabilization control means for determining a target wheel, to which the brake torque is applied, out of the wheels and calculating a second target quantity used for a stabilization control for applying the brake torque to the target wheel in order to ensure a vehicle stability, and a brake control means for controlling the brake torque applied to a non-target wheel based on the first target quantity and controlling the brake torque applied to the target wheel based on the first and second target quantities. | 02-10-2011 |
| 20110022284 | Acceleration control device - In a cruise assist ECU, when a vehicle drive state is changed from a running state to a state immediately before vehicle stop or from a stop state to a state immediately after vehicle start, a feedback torque gain compensation part changes a feedback torque gain to a second set value, and maintain it during the state immediately before vehicle stop or the state immediately after vehicle start. Because the second set value is smaller than a first set value, a response delay is increased in feedback control of the feedback torque control part when the first set value of the feedback torque gain is switched to the second set value. This makes it possible to slowly change the FB control value during the transition state in elapse of time, and prevent a brake or damping torque generated in the vehicle from being excessively changed in FB control. | 01-27-2011 |
| 20100332099 | VEHICLE MOTION CONTROL DEVICE - A vehicle motion control device obtains an actual slip ratio and a physical quantity representing a state of motion of the vehicle in a direction of lateral overturn. The device is in an anti-lateral overturn mode when the physical quantity is larger than or equal to a motion state threshold. The device obtains an increase gradient and determines whether or not the increase gradient is larger than or equal to a predetermined increase gradient threshold, wherein the increase gradient is a ratio of an increase amount of the physical quantity to a decrease amount of the actual slip ratio. The device decreases, when the device is in the anti-lateral overturn mode and the increase gradient is larger than or equal to the increase gradient threshold, a speed of depressurization of a wheel cylinder pressure. | 12-30-2010 |
| 20100332098 | VEHICLE MOTION CONTROL DEVICE - The vehicle motion control device performs anti-lateral overturn control for increasing a brake force to be generated at a front inside wheel of a vehicle in order to cause skidding at the front inside wheel when a condition for increasing a brake force to be generated at an outside wheel is satisfied, wherein the condition is that the vehicle motion control device is in the anti-lateral overturn mode and the vehicle is turning. | 12-30-2010 |
| 20100332096 | Acceleration control apparatus for vehicle - An object of the invention is to provide an acceleration control apparatus, according to which accuracy for feed-forward torque may not be decreased even when a calculating accuracy for an estimated-slope torque would be decreased. Reliability of estimated slope is calculated and feedback torque is corrected, in such a manner that a gain for a feedback control portion is increased when the reliability of the estimated slope becomes lower. It is, therefore, possible to compensate a possible decrease of the accuracy of the feed-forward torque by correcting the feedback torque in accordance with the reliability of the estimated slope. | 12-30-2010 |
| 20100332071 | VEHICLE MOTION CONTROL DEVICE - The vehicle motion control device obtains a physical quantity representing a state of a motion of a vehicle in a direction of a lateral overturn. When the obtained physical quantity is larger than or equal to a motion state threshold and the vehicle motion control device is thereby in an anti-lateral overturn, the vehicle motion control device determines the target slip ratio at a present calculation period based on a largest value of the slip ratio corresponding, according to the predetermined relation between the physical quantity and the slip ratio, to the physical quantity obtained during a time range between the present calculation period and a past time instance when the vehicle motion control device enters the anti-lateral overturn mode. | 12-30-2010 |
| 20100327652 | CHECK VALVE AND BRAKE HYDRAULIC PRESSURE CONTROL DEVICE USING THE SAME - In a check valve having a spherical valve body received in a valve chamber, a valve seat for blocking the flow of fluid from the valve chamber toward an inflow port when having the spherical valve body seated thereon, and a plate-like resilient member arranged across the valve chamber. The resilient member has an annular fixed portion fixed on a circumferential wall of the valve chamber and a tongue piece portion radially extending from a radial one side of the annular fixed portion to extend an end thereof beyond an inner edge on a radial other side of the annular fixed portion. The tongue piece portion is formed to be deflected toward the valve seat side from the fixed portion and is resiliently contacted with the spherical valve body at a center part thereof for disengageably pressing the spherical valve body against the valve seat. | 12-30-2010 |
| 20100319800 | PLUG STRUCTURE - A plug structure for sealing an opening end portion of a circular fluid passage formed in a housing comprises a plug being equal in resistance against deformation to, or smaller than, the housing and having an annular flange portion formed on an end portion of a circular column portion; a flange pressure-contacting portion of the opening end portion deformed to be pressure-contacted with a lower surface of the annular flange portion by being caulked with a caulking tool; a contracted diameter portion of a shape gradually narrow in the middle to which the circular column portion is deformed as a result that the fluid passage is deformed by the caulking to be contracted in diameter; and a deformed circumferential portion to which the circumferential edge of the annular flange portion of the plug is deformed by the caulking to be pressure-contacted with the flange pressure-contacting portion of the opening end portion. | 12-23-2010 |
| 20100313560 | HYDRAULIC PRESSURE APPARATUS AND BRAKE PRESSURE CONTROL APPARATUS USING THE SAME - An open port is provided on an inner peripheral surface of the cylinder bore of the reservoir apparatus and the port is exposed to the exterior of the reservoir apparatus. A hollow portion is formed concentrically with the port on a reservoir body. An annular thin portion is formed between the inner peripheral surface of the cylinder bore and the hollow portion surrounding the port in a radial direction. The thin portion is outwardly deflected and deformed by being pushed outwardly in a radial direction centering on the port in a range narrower than the inner diameter of the hollow portion. Thus, the opening of the port is outwardly sunk from the inner peripheral surface of the cylinder bore thereby to form a curved surface at a root portion of the thin portion on the inner peripheral surface of the cylinder bore. | 12-16-2010 |
| 20100270855 | BRAKE CONTROL APPARATUS - An object of the invention is to reduce an influence of deviation in pressure increasing performance, which would be caused by individual differences of pressure increase valves, so that a desired braking force may be obtained. A moderate pressure increasing operation is carried out for wheel cylinder pressure of a wheel, which is on a high μ-road, wherein a demand differential pressure for a pressure increase valve is set at a first target pressure for a first time period and then switched to a second target pressure for a second time period. The influence of the deviation may be absorbed during the moderate pressure increasing operation, so that a difference of wheel cylinder pressure between front left and front right wheels may be reduced. | 10-28-2010 |
| 20100268420 | MOTION CONTROL DEVICE FOR VEHICLE - A motion control device for a vehicle, including a braking means for applying a brake torque to a wheel of the vehicle and maintaining a traveling stability of the vehicle by controlling the braking means, the motion control device for the vehicle, includes a steering angular velocity obtaining means for obtaining a steering angular velocity of the vehicle, a yaw angular acceleration obtaining means for obtaining a yaw angular acceleration of the vehicle, and a control means for controlling the brake torque on the basis of the steering angular velocity and the yaw angular acceleration. | 10-21-2010 |
| 20100268419 | MOTION CONTROL DEVICE FOR VEHICLE - A motion control device for a vehicle having a braking means for applying a brake toque to a wheel of the vehicle and maintaining a traveling stability of the vehicle by controlling the braking means, the motion control for the vehicle, includes a steering angular velocity obtaining means for obtaining a steering angular velocity of the vehicle, a maximum steering angular velocity calculating means for calculating a maximum steering angular velocity on the basis of the steering angular velocity, a determining means for determining a reference turning state quantity on the basis of the maximum steering angular velocity, an actual turning state quantity obtaining means for obtaining an actual turning state quantity of the vehicle, and a control means for controlling the brake toque on the basis of the reference turning state quantity and the actual turning state quantity. | 10-21-2010 |
| 20100243386 | ELECTRIC PARKING BRAKE APPARATUS HAVING EMERGENCY RELEASE FUNCTION FOR VEHICLE - An electric parking brake apparatus having an emergency releasing function for a vehicle, includes an actuator having a driven member, and an emergency release mechanism releasing a parking brake without relying on an electric motor and including an emergency driving member, and an operation mechanism, which is provided between an operation portion provided at the vehicle interior and the actuator and drives the emergency driving member, wherein the operation mechanism includes an operation driving member, which is movable relative to the emergency driving member so as to be engageable with and disengageable from the emergency driving member and drives the emergency driving member in a case where the operation driving member is engaged with the emergency driving member, and a positioning mechanism, which normally maintains an disengaged state of the emergency driving member and is provided at an end portion of the operation mechanism positioned closer to the actuator. | 09-30-2010 |
| 20100243384 | DISC BRAKE APPARATUS - The present invention is to stabilize behavior of brake pads at the time of braking of a disc brake so as to suppress generation of brake noise, and also to reduce the roll moment of the brake pads generated at the time of braking so as to suppress uneven abrasion of linings. A back plate ( | 09-30-2010 |
| 20100242716 | VACUUM BOOSTER DEVICE - A vacuum booster device includes a housing, a movable partition mounted within the housing, a valve piston mounted at the housing in a movable manner, an input member, an output member, a reaction force member, a control valve including an air control valve portion and a negative pressure control valve portion, a key member specifying a limit of a movement of the input member relative to the valve piston in a front and rear direction, and a straightening portion arranged in an air passage that is formed between the input member and the valve piston and that is positioned at a front of the air valve portion and the air control valve portion, the straightening portion being formed into a shape to be prevented from projecting relative to an outer diameter portion of the air valve portion and arranged forward relative to the air valve portion by a predetermined distance. | 09-30-2010 |
| 20100222978 | BRAKING APPARATUS - A pressure braking unit including an operating pressure applying unit that applies an operating pressure to a working fluid according to operation of an operating member; a pressurizing unit that applies a pressurized pressure to the working fluid; a braking force generating unit that generates pressure braking force on wheels by a total pressure of the operating pressure and the pressurized pressure; a regenerative braking unit that generates regenerative braking force on the wheels; and a controlling unit that executes switching control to switch the regenerative braking force to the pressure braking force according to the pressurized pressure, and by prohibiting increase in the pressurized pressure by the pressurizing unit, it is possible to inhibit braking operation feeling from deteriorating while ensuring the braking force. | 09-02-2010 |
| 20100211271 | MOTION CONTROL DEVICE OF VEHICLE - A motion control device of a vehicle comprises: a steering angle controller which controls a steering angle of a steered wheel so that an actual turning controlling variable becomes a target turning controlling variable; and a braking force controller which controls a vehicle braking force so that the actual turning controlling variable becomes the target turning controlling variable. The control of the steering angle controller is stopped by detecting a timing with which the braking force controller detects an oversteering state of the vehicle to start a braking force control. | 08-19-2010 |
| 20100211269 | MOTION CONTROL DEVICE OF VEHICLE - A motion control device of a vehicle comprises: a steering angle controller which controls a steering angle of a steering wheel so that an actual turning control variable becomes a target turning control variable; and a braking force controller which controls a vehicle braking force so that the actual turning control variable becomes the target turning control variable. The braking force controller selectively uses, as a steering angle signal for control, a first steering angle signal which reflects a steering angle compensation quantity compensated by the steering angle controller at the time of the oversteering of the vehicle is reflected, and a second steering angle signal which does not reflect the steering angle compensation quantity. | 08-19-2010 |
| 20100209273 | PISTON PUMP - A piston pump includes a pump mechanism configured to compress fluid sucked from an inlet port by increasing or decreasing a volume of a pump chamber which faces a front end of a piston by reciprocating the piston housed in a housing, a feed mechanism including a feed ring mounted to an annular groove provided at an outer periphery of the piston and following a motion of the piston, a feed chamber formed between the feed ring and the housing, and a valve portion. The piston pump includes a pressure wall provided at the piston and configured to contact the feed ring to axially move the feed ring, and a restriction portion provided at the feed ring and configured to engage with an outer periphery of the piston at a position approximate to the pressure wall for restricting a radial displacement of the feed ring on the piston. | 08-19-2010 |
| 20100206675 | VENTILATED DISC ROTOR - A ventilated disc rotor includes a hat portion at which the ventilated disc rotor is attached to a rotation shaft, a sliding portion formed in an annular shape and provided at a radially outer portion of the hat portion, the ventilated disc rotor being slidably held by an inner pad and an outer pad at the sliding portion so as to brake a rotation of the ventilated disc rotor and the sliding portion including an inner disc-shaped portion, an outer disc-shaped portion and a plurality of cooling fins, wherein the hat portion and the plurality of cooling fins are integrally made of a steel plate material, and the outer disc-shaped portion and the inner disc-shaped portion are formed by casting together with the plurality of cooling fins in such a way that the plurality of cooling fins integrally connects the inner disc-shaped portion to the outer disc-shaped portion. | 08-19-2010 |
| 20100193059 | ACCUMULATOR - To restrain abnormal deformation of a bellows due to a pressure difference between the inside and outside thereof, an outside gas type accumulator includes a pressure difference regulation mechanism ( | 08-05-2010 |
| 20100185375 | Acceleration control apparatus for vehicle - A reliability for a power-train feed-forward torque may be decreased when a degree of reliability for an estimated braking torque is decreased due to disturbance factors. A power-train feedback torque is corrected based on a degree of reliability for a power-train torque, for which a reliability for a braking condition is taken into account. In a similar manner, a brake feedback torque is corrected based on a degree of reliability for a braking torque, for which a reliability for a power-train condition is taken into account. Accordingly, it is possible to compensate the decrease of reliability for the power-train feed-forward torque or brake feed-forward torque by the correction for the power-train feedback torque or the brake feedback torque. | 07-22-2010 |
| 20100176653 | BRAKE APPARATUS - A brake apparatus includes a master cylinder generating a master cylinder hydraulic pressure corresponding to a pressing operation to a brake pedal, a braking mechanism, a pressurizing mechanism generating a brake fluid pressure by use of a motor irrespective of the pressing operation, a control portion controlling an electric current applied to the motor corresponding to the pressing operation, a valve, a hydraulic pressure sensor detecting the brake fluid pressure generated by the pressurizing mechanism, and a failure determining portion executing a failure determination of the motor on the basis of the brake fluid pressure detected by the hydraulic pressure sensor by adjusting the degree of opening of the valve so as to be a interrupting position for interrupting the flow of the brake fluid pressure and by applying an electric current to the motor in order to generate the brake fluid pressure so as to be a predetermined pressure. | 07-15-2010 |
| 20100176652 | BRAKING DEVICE - A braking device includes: an input member configured to interlock with a displacement of a brake pedal; an output member which is movable relatively to and independently of the input member and is configured to generate a fluid pressure in a master cylinder; a braking mechanism configured to exert a braking force on a wheel by the fluid pressure generated in the master cylinder; drive means configured to drive the output member independently of the input member; and a clutch mechanism which is provided between the input member and the output member and configured to engage the input member with the output member so as to allow the input and output members to uniformly move when the output member is not driven by the drive means, and to cancel the engagement between the input member and the output member when the output member is driven by the drive means. | 07-15-2010 |
| 20100163353 | FRICTION COUPLE - A friction couple including: a first friction member that contains a metallic material and includes a first friction surface; and a second friction member that includes a second friction surface that contacts the first friction surface and that contains an oxidation film developer that accelerates formation of an oxidation film on at least one of the first friction surface and the second friction surface by oxidizing the metallic material when the first friction surface and the second friction surface contact each other. | 07-01-2010 |
| 20100161191 | CONTROL DEVICE FOR VEHICLE BRAKE SYSTEM - A control device for a vehicle brake system includes first judgment value derivation and storage means for deriving and storing as first judgment value a boosting limit judgment pressure which, if predetermined conditions are satisfied during the driving of hydraulic pumps by boost control means, a boosting limit judgment pressure calculation means calculates at the time when the predetermined conditions are satisfied, and returning start judgment means for judging whether the returning of the brake manipulation member has been started or not. The boost control means executes the boost control using as the boosting limit judgment pressure the first judgment value stored in the first judgment value derivation and storage means when the returning start judgment means judges during the driving of the pumps that the returning of the brake manipulation member has been started. | 06-24-2010 |
| 20100161180 | MOTOR-DRIVEN STEERING CONTROLLER AND AUTOMOBILE ANTI-SKID CONTROLLER - A motor-driven steering controller for controlling a steering wheel of a vehicle. The controller includes a steering torque controlling unit, a braking force estimating unit, a right and left braking force difference estimating unit and an assist steering torque providing unit. The steering torque controlling unit controls a steering torque on the steering wheel depending on a steering operation. The braking force estimating unit estimates braking forces to be imposed on wheels of the vehicle. The right and left braking force difference estimating unit estimates difference between the braking forces to be imposed on the right and left wheels each estimated by the braking forces estimating unit. The assist steering torque providing unit provides an assist steering torque for the steering torque controlling unit on the basis of the difference in braking force between right and left wheels estimated by the right and left braking force difference estimating unit. | 06-24-2010 |
| 20100138126 | BRAKE HYDRAULIC PRESSURE CONTROLLING APPARATUS FOR VEHICLE - A brake hydraulic pressure controlling apparatus for a vehicle includes a hydraulic pressure block included in a hydraulic pressure unit and including therein a hydraulic circuit, a plurality of electromagnetic valves attached on a surface of the hydraulic pressure block and changing an opening degree of a passage of the hydraulic circuit, and an electronic control unit including an ECU board, which is electrically connected to the electromagnetic valves and on which an electronic control device executing a driving control of each of the electromagnetic valves is provided, and attached on the surface of the hydraulic pressure block so that the ECU board is covered by a case, wherein the ECU board of the electronic control unit is arranged within an area of the surface of the hydraulic pressure block and all of the plurality of the electromagnetic valves are arranged adjacently around the ECU board. | 06-03-2010 |
| 20100138123 | Running control apparatus and running control program for the apparatus - A running control apparatus calculates a target driving or braking torque in a calculating block to control the vehicle driven or braked by this torque at a target speed against a running resistance changed with running circumstances of the vehicle. In a control block, when a driver-required braking torque based on the braking operation of the driver is smaller than the target braking torque, the running control for the vehicle is performed to brake the vehicle by the target braking torque. When the driver-required braking torque becomes higher than the target braking torque, the running control is stopped, and the driver manually brakes the vehicle by the driver-required braking torque. When the driver-required braking torque is decreased to be lower than the target braking torque or a predetermined braking torque corresponding to the release of the braking operation, the running control is restarted. | 06-03-2010 |
| 20100121550 | VEHICLE TRAVEL CONTROL DEVICE - A vehicle travel control device has a engine that controls an engine based on a driving target controlled variable; a brake that controls a brake device based on a braking target controlled variable; and a automatic travel control that calculates the driving target controlled variable and/or braking target controlled variable so that a vehicle speed of a vehicle becomes a target vehicle speed, and outputs the driving target controlled variable to the engine and the braking target controlled variable to the brake, the vehicle travel control device being configured such that, upon detection of an acceleration operation during the vehicle travel control, the automatic travel control calculates a target vehicle speed for vehicle travel control by the brake device, so that the target vehicle speed becomes higher than a current vehicle speed of the vehicle. | 05-13-2010 |
| 20100121549 | APPARATUS FOR CONTROLLING ACCELERATION OF VEHICLE - An apparatus is provided for controlling acceleration of a vehicle to a target acceleration. In the apparatus, a target acceleration calculator calculates the target acceleration. A provisional acceleration setting unit sets a provisional target acceleration such that a change rate of the provisional target acceleration is limited to a target limitation value. The provisional target acceleration is used during a step during which the acceleration of the vehicle is changed to the target acceleration. A drive power calculator calculates a drive power to obtain the provisional target acceleration. In the provisional acceleration setting unit, an initial value of the provisional target acceleration depends on a running state of the vehicle. | 05-13-2010 |
| 20100117445 | CONTROL DEVICE FOR A BRAKE APPARATUS - The control device adapted to a vehicle brake apparatus includes a vacuum obtaining portion, a master cylinder pressure obtaining portion and a boosting control portion for executing a boosting control which controls supplying of a boosting pressure established by driving the hydraulic pressure pump and controlling the pressure differential control valve so that the boosting pressure agrees to a target boosting pressure obtained with a target boosting gain smaller than a basic boosting gain which indicates a servo-ratio of the vacuum booster up to the time, when the master cylinder pressure becomes equal to or more than a boosting limit pressure which is a master cylinder pressure corresponding to a boosting limit of the vacuum booster at the vacuum obtained by the vacuum pressure obtaining portion, in addition to the master cylinder pressure established in response to the operation of the brake operation member. | 05-13-2010 |
| 20100116364 | BACKFLOW PREVENTION DEVICE - A backflow prevention device includes a check valve including a valve body and a valve seat, an enclosure member retained by a peripheral member and arranged at a downstream side of the valve body, the enclosure member including an entrance facing an upstream side and being formed into a cylindrical shape having a bottom wall, the enclosure member into which the valve body is inserted via the entrance, the enclosure member having an inner diameter for guiding an outer periphery of the valve body, the upstream side corresponding to a direction where the fluid flows into the check valve while the downstream side corresponding to a direction where the fluid flowing into the check valve flows out therefrom, and a bypass passage provided at an outer periphery of the enclosure member, the bypass passage through which the fluid passing through a valve portion of the check valve flows. | 05-13-2010 |
| 20100108168 | ACCUMULATOR - To prevent plastic deformation of a bellows due to a pressure difference between inner and outer sides of the bellows in an outside gas type or inside gas type accumulator, a disc-like gasket is held in a float able state to a surface close to a stay in a bellows cap by a gasket holder, so that, the disc-like gasket moves together with the bellows cap at a steady operation time, the disc-like gasket moves together with the bellows cap to contact with an end surface portion of the stay, thereby closing the liquid chamber at a zero-down time, and the bellow cap moves toward a position where liquid pressure and gas pressure balance while the disc-like gasket keeps contacting with the stay due to a difference of pressure receiving areas in both the surfaces when the liquid in the liquid chamber is thermally expanded at a zero-down time. | 05-06-2010 |
| 20100101902 | DISC ROTOR - A disc rotor includes a sliding portion, a hat portion, and a connecting unit connecting the sliding portion and the hat portion. The connecting unit includes a washer arranged between the radially inner portion of the sliding portion and the radially outer portion of the hat portion, and a connecting pin having a head portion, having a shaft portion inserted through a first through-hole formed at the sliding portion, the washer and a second through-hole formed at the hat portion in an axial direction of the rotor, and riveted at an end portion of the shaft portion so as to integrally fasten the sliding portion, the washer and the hat portion. A riveted portion of the connecting pin is formed into a taper shape, and an outer circumferential surface of the riveted portion contacts and engages a tapered surface formed at the second through-hole of the hat portion. | 04-29-2010 |
| 20100100295 | VEHICLE SPEED CONTROL SYSTEM AND VEHICLE SPEED CONTROL METHOD OF VEHICLE - If a condition for finishing speed limit control is satisfied, a gradient of a slope of the road is estimated based on a steady component of the longitudinal acceleration of the vehicle, and a correction factor is computed based on the slope gradient of the road, while a target acceleration of the vehicle is computed based on the vehicle speed. Then, a target vehicle speed is computed by adding the target vehicle speed of the last cycle to the product of the correction factor, target acceleration and the cycle time of the control, and the braking or driving force of each wheel is controlled so that the vehicle speed becomes equal to the target vehicle speed. In this manner, a passenger of the vehicle is prevented from feeling uncomfortable about the speed increase after the completion of the vehicle speed limit control. | 04-22-2010 |
| 20100096223 | OPPOSED-PISTON DISC BRAKE - An opposed-piston disc brake includes cylinder connection oil passages respectively connected to a cylinder of an inner caliper portion and a cylinder of an outer caliper portion, passage communication bores respectively formed at bridge portions to extend in an axial direction of a disc in a substantially straight manner. The cylinder connection oil passages are formed using a core at the time when a caliper body is cast. The cylinder connection oil passages extend in a radially outer direction of the disc. Ends of the cylinder connection oil passages in a longitudinal direction thereof are directly connected to the passage communication bores. In a state where the caliper body is mounted on a vehicle, a top portion of an inner wall surface of one of the passage communication bores is positioned higher than the ends of the cylinder connection oil passages. | 04-22-2010 |
| 20100082216 | SPEED CONTROL DEVICE FOR VEHICLE - A speed control device for a vehicle includes a vehicle speed obtaining means obtaining a vehicle speed, a shape obtaining means obtaining a curve shape, a position obtaining means obtaining a positional relationship between a curve and the vehicle, a target vehicle speed determining means determining a target vehicle speed based on the curve shape and the positional relationship, a vehicle speed controlling means controlling the vehicle speed based on the target vehicle speed and the vehicle speed, and an acceleration operation quantity obtaining means obtaining an operation quantity of an acceleration operating member operated by a driver, wherein the target vehicle speed determining means includes a modification means modifying the target vehicle speed based on the operation quantity so that the target vehicle speed obtained when the operation variable is greater than zero becomes a greater value than the target vehicle speed obtained when the operation quantity is zero. | 04-01-2010 |
| 20100076659 | VEHICLE MOTION CONTROL APPARATUS - This apparatus is applied to a vehicle brake apparatus provided with a hydraulic booster operated by utilizing an accumulator hydraulic pressure that is adjusted to a predetermined high pressure (not less than a lower limit value) by a drive control of a hydraulic pump. This apparatus executes an automatic pressurization control by controlling plural solenoid valves with the use of the accumulator hydraulic pressure. The increasing slope of the brake hydraulic pressure during the automatic pressurization control is determined on the basis of the vehicle motion state. The increasing slope is restricted to be not more than a predetermined restriction value, in the case where the accumulator hydraulic pressure at the time of starting the automatic pressurization control is less than “a reference hydraulic pressure that is greater than a minimum value of the accumulator hydraulic pressure necessary for assisting the brake operation by the hydraulic booster and smaller than the lower limit value”. | 03-25-2010 |
| 20100072811 | PARKING BRAKE CONTROL UNIT - When a brake force is generated by a service brake in accordance with the depression of a brake pedal by a driver, a brake force generated by an electric parking brake is reduced when lock control is performed, taking the brake force generated by the service brake into consideration. More specifically, a target motor current value increase amount is corrected such that as the brake force generated by the service brake becomes larger, the target motor current value increase amount becomes smaller. Thus, when brake force is generated by the electric parking brake and the service brake compensates for the brake force, it is possible to inhibit generation of a brake force larger than necessary. | 03-25-2010 |
| 20100066164 | BRAKING CONTROL DEVICE - There is provided a braking control device whereby operating noise caused by the drive frequency of the proportional electromagnetic valve can be reduced without reducing the performance of fluid pressure control. A braking control device ( | 03-18-2010 |
| 20100060074 | ROTARY PUMP AND BRAKE DEVICE IN WHICH ROTARY PUMP IS PROVIDED - In an inner wall surface of a casing, grooves are formed that correspond to end faces of an outer rotor and an inner rotor, and seal members are disposed within the grooves, the seal members presses against the end faces of the outer rotor and the inner rotor. Inclined portions are provided in sealing portions of resin members of seal members, the sealing portions covering a closed portion. With this configuration, an internal pressure in the closed portion causes the inclined portions to separate from an outer rotor and an inner rotor when a brake fluid pressure within the closed portion increases to the point that the brake fluid is excessively compressed, releasing the brake fluid that is inside the closed portion. It is therefore possible to prevent the brake fluid pressure from increasing excessively within the closed portion. | 03-11-2010 |
| 20100052417 | PRESSURE REGULATING RESERVOIR - A pressure regulating reservoir includes, first and second conduits, a reservoir chamber, first and second reservoir ports, a valve portion including a first hydraulic passage, first and second valve bodies, and a valve seat including a second hydraulic passage, a piston portion including a piston and a spring, a mobile member, a protruding portion and a shaft, wherein the first hydraulic passage is closed by the second valve body thereby interrupting the fluid communication when the pump is not actuated, a pressure difference between a brake hydraulic pressure within the reservoir chamber and a brake hydraulic pressure within the first reservoir port is regulated when the pump is actuated while the brake hydraulic pressure is generated by the brake hydraulic pressure generating means, and the second hydraulic passage is opened to establish the fluid communication when the pump is actuated while no brake hydraulic pressure is generated. | 03-04-2010 |
| 20100009807 | Vehicle control device - In a vehicle control device, a brake feedback control unit calculates a brake feedback torque T | 01-14-2010 |
| 20090326761 | VEHICLE CONTROL DEVICE - A vehicle control device includes a turning state changing mechanism for changing a turning state of a vehicle on the basis of a turning state changing command, and a curve-driving assessment portion for inputting therein a curve characteristic information including a shape of a curve existing in a traveling direction of the vehicle and a line-of-sight information relating to a line-of-sight of a driver and for outputting the turning state changing command to the turning state changing mechanism on the basis of the curve characteristic information and the line-of-sight information. | 12-31-2009 |
| 20090302189 | HYDRAULIC UNIT SUPPORT STRUCTURE - A hydraulic unit support structure includes a bracket ( | 12-10-2009 |
| 20090218881 | Fluid pressure control device - A brake force distribution control device which increases a brake force at an operation wheel so that a slip amount of the operation wheel becomes closer to a slip amount of a target wheel, wherein the slip amount of the target wheel is larger than the slip amount of the operation wheel. | 09-03-2009 |
| 20090132143 | Parking Support Control Apparatus and Parking Support Control System - An initial value θ | 05-21-2009 |
| 20090076701 | Vehicle cruise control apparatus and vehicle cruise control method - A vehicle cruise control apparatus includes a vehicle speed adjusting device that adjusts a vehicle speed to a set target vehicle speed, a brake operation detecting device that detects brake operation performed by a driver, and a first controller that controls the vehicle speed adjusting device based on a target driving force that maintains a vehicle in a stopped condition, when the brake operation performed by the driver is detected. | 03-19-2009 |
| 20090069995 | VEHICLE DRIVE CONTROL DEVICE - A vehicle drive control device includes a wheel speed detecting means for detecting a rotational speed of a plurality of wheels of a vehicle, a vehicle speed calculating means for calculating a vehicle speed on the basis of the rotational speed of the plurality of wheels detected by the wheel speed detecting means, and an automatic drive controlling means for performing an automatic drive control for controlling the vehicle speed to be a predetermined target speed by controlling a driving force generating means and a vehicle speed reducing means for the vehicle. The automatic drive controlling means further performs a driving force reducing control for reducing a driving force of the vehicle to be generated by the driving force generating means when the rotational speed of at least one of the plurality of wheels detected by the wheel speed detecting means exceeds a predetermined value. | 03-12-2009 |
| 20090069993 | Running road determination device, vehicle running control apparatus and vehicle running control method - A vehicle running control apparatus, which performs automatic running control by controlling an engine for applying a driving torque to a vehicle C and a brake device for applying a braking torque to the vehicle C such that a vehicle speed of the vehicle C becomes equal to a preset target vehicle speed, determines, on the basis of a target driving torque ETo calculated to apply the driving torque to the vehicle C and a target braking torque BTo calculated to apply the braking torque to the vehicle C, whether or not the vehicle C is running on a road difficult to run on, when automatic running control is performed. When it is determined that the vehicle C is running on the road difficult to run on, automatic running control is terminated. | 03-12-2009 |
| 20090062068 | APPARATUS FOR CONTROLLING AUTOMATIC TRAVEL OF VEHICLE - An apparatus controls automatic travel of a vehicle equipped with a motive power generator. In the apparatus, information indicating a road surface on which a vehicle is present currently is acquired. It is determined whether or not a command for shifting the vehicle from its stopped state to its traveling state is issued. When the command is issued, automatic shift of the vehicle is made from its stopped state to its traveling state by controlling drive of the motive power generator based on the acquired information. It is further determined whether or not, of a component of gravity applied to the vehicle, there is a force component applied in a direction opposite to a travel direction of the vehicle. When there is the force component, the operation applied to the motive power generator is continued even if the brake pedal is pressed by the driver. | 03-05-2009 |
| 20090048755 | Vehicle speed control device and method - A vehicle speed control device calculates a desired axle torque for maintaining a speed of a vehicle to a set speed, and conducts cruise control. Specifically, the vehicle speed control device calculates a drive force including a feedforward component corresponding to the set speed and a travel resistance against the travel of the vehicle, and a feedback component corresponding to a deviation of the set speed from the actual speed of the vehicle as a desired axle torque. The vehicle speed control device interrupts the cruise control when a requested drive axle torque requested by an accelerator operation during the cruise control exceeds the desired axle torque, and restarts the cruise control when the requested drive axle torque becomes lower than the desired axle torque. | 02-19-2009 |
| 20090048751 | Method and apparatus for controlling acceleration of a vehicle - A control apparatus controls acceleration of a vehicle provided with a motive power generation apparatus and brake apparatuses. For the control, the control apparatus comprises calculation and actuating blocks. The calculation block calculates torque to be requested, based on a difference between an actual value of the acceleration and a target value thereof and a gain for feedback controlling the actual value of the acceleration to the target value thereof. The gain is differentiated in value between in a first case in which the brake apparatuses are used for the feedback control and a second case in which the brake apparatuses are not used for the feedback control. The actuating block actuates the motive power generation apparatus and the brake apparatuses based on the calculated torque. The value of the gain in the first case is made larger than the value of the gain in the second case. | 02-19-2009 |
| 20090043466 | Method and apparatus for controlling anteroposterior acceleration of a vehicle - A control apparatus controlling anteroposterior acceleration of a vehicle by controlling a motive power generation apparatus mounted on the vehicle, which is also provided with a staged transmission apparatus that operates on gear ratios. The motive power generation apparatus has an output shaft producing a rotation force in response to a command to be requested. The rotation force is transmitted to the drive wheels via the staged transmission apparatus. A feedback manipulated variable is calculated to control the production of the rotation force of the motive power generation apparatus so that an actual value of anteroposterior acceleration of the vehicle is controlled at a target value thereof. The calculated feedback manipulated variable is used as the command. When the staged transmission apparatus is in the switchover control of the gear ratios, the manipulated variable is is limited from being calculated (for example, stopped from being calculated). | 02-12-2009 |
| 20090025996 | Vehicle control device - An electronic control device reduces, after a time at which constant speed traveling control is terminated (specific control termination time) not by an accelerating operation or braking operation but by, for example, an operation of a control switch, the vehicle driving force to a force corresponding to the amount of accelerating operation at the specific control termination time. Also, the electronic control device changes the vehicle braking force to a force corresponding to the amount of braking operation at the specific control termination time by controlling the braking hydraulic pressures with a hydraulic pressure circuit so that the value of a vehicle propulsive force, which takes a positive value when acting in the same direction as the driving force (and takes a negative value when acting in the opposite direction of the driving force) and which has a magnitude equal to a value resulting from subtracting the magnitude of the braking force from the magnitude of the driving force, is equal to or smaller than the value of the vehicle propulsive force at the specific control termination time. | 01-29-2009 |
| 20080319624 | Automatic braking device for controlling movement of vehicle in direction opposite to intended direction of movement of driver - When a vehicle stops, a brake control unit maintains a braking force applied on a wheel by a braking-force application unit for maintaining a halted state. In this state, if a driver depresses the accelerator pedal to execute starting of the vehicle, the braking force is gradually decreased, and the vehicle starts at a speed that accords with a degree of accelerator opening and a gradient of a road on which the vehicle is stopped. When a movement direction at this time is the same as a movement direction intended by the driver, the braking force is decreased to zero for smooth starting. When the movement direction is opposite to the intended movement direction, the braking force is increased to control the movement in the opposite direction, such that the movement changes from the opposite direction to the same direction, and finally, smooth starting in the desired direction is executed. | 12-25-2008 |
| 20080300766 | Cruise control system and method - In a cruise control system for a vehicle, a cruise ECU calculates a cornering resistance applied to the vehicle based upon a steering angle, when a vehicle turns. The cruise ECU calculates a speed reduction amount as a correction vehicle speed based upon the cornering resistance. The cruise ECU subtracts the correction vehicle speed from a set vehicle speed to set a target vehicle speed so that the vehicle speed becomes lower as the cornering resistance is larger. The cruise ECU controls the vehicle speed to be within a permissible speed range of the target vehicle speed. | 12-04-2008 |
| 20080300765 | Vehicle behavior control device - It is predicted whether a spin amount is tending to diverge and a vehicle is tending to become unstable, or the spin amount is tending to converge and the vehicle is tending to become stable. When the convergent tendency is predicted, a correction to reduce the spin amount is performed. As a result, the performance of a braking force control can be made difficult when the spin amount is tending to converge. Thus, it is possible to prevent an anti-spin control from being performed when there is actually no need to perform the anti-spin control, such as when the vehicle posture is correcting. | 12-04-2008 |
