Class / Patent application number | Description | Number of patent applications / Date published |
477181000 | Engine controlled by clutch control | 24 |
20090017989 | METHOD FOR CONTROLLING DISENGAGEMENT OF AN AUTOMATED CLUTCH IN A VEHICLE - A method is provided for controlling disengagement of an automated clutch in a vehicle. A decrease of a first engine rotational speed limit, at which the clutch is disengaged, is initiated upon sensing travel of the vehicle in a down slope, and zero displacement of the throttle control. The first engine rotational speed limit is decreased to a speed where an, in the vehicle arranged, engine idle speed regulator injects an amount of fuel corresponding to a positive engine torque which equals current retarding negative engine torque so that total output torque from the engine is approximately zero. The vehicle accelerating effect due to engine braking torque drop out when the clutch is disengaged will be eliminated. | 01-15-2009 |
20090036270 | WORKING VEHICLE - In a working vehicle, a control unit is configured to control an engine based on an engine power curve indicating a relationship between an engine speed and an engine output torque. The control unit is further configured to calculate an absorption horsepower that is an absorption horsepower of a hydraulic pump and to change the engine power curve used to control the engine based on the absorption horsepower. | 02-05-2009 |
20090036271 | METHOD AND APPARATUS FOR DECELERATING A MATERIAL REDUCTION TOOL - One embodiment of the present disclosure provides a material reduction machine including a clutch configured and arranged to engage and disengage a material reduction tool with an engine based in response to a control unit. The control unit is configured to decelerate the material reduction tool by maintaining the clutch engaged with the engine during an engine speed reduction period. Another embodiment of the present disclosure also provides a method of decelerating a material reduction tool of a material reduction machine. The method includes the steps of maintaining engagement between the material reduction tool and an engine after the engine enters an engine speed reduction mode, and disengaging the material reduction device from the engine before the engine rpm drops below a predetermined level. | 02-05-2009 |
20090247363 | Clutch control device - An oil pressure command value for slip-control of a lock-up clutch of a torque converter is calculated based on a feed-forward oil pressure value calculated by an FF value calculating unit and a feed-back oil pressure value calculated by a feedback value calculating unit. When the feedback oil pressure value is calculated, a deviation out-of-range determining unit determines whether a deviation between actual rotational speed difference and target rotational speed difference is outside of a predetermined range. If the deviation is outside of the predetermined range, a feedback value correcting unit calculates a correction value and corrects the feedback oil pressure value. Therefore, when the deviation is outside of the predetermined range, the actual rotational speed difference is brought into convergence with the target rotational speed difference with rapid response. When the deviation falls within the predetermined range, normal feedback control is adopted to assure stability without overshooting, even in a high engine speed, high engine torque state. | 10-01-2009 |
20090318265 | Control Method to Dynamically Limit Engine Torque to Provide Clutch Overheating Protection - A method for controlling the axle coupling clutch of an all wheel drive vehicle is provided. A determination is made to confirm that a coupling clutch operating property is at a predetermined entrance value. If the determination concludes that the coupling clutch operational property is at a predetermined entrance value, a signal is sent to an engine controller to modify engine torque output. | 12-24-2009 |
20100029441 | CLUTCH CONTROL DEVICE - A clutch control device providing an engagement feeling which conforms to a state of a vehicle without requiring a correction of an engagement position even when a clutch is worn. A clutch control device includes a vehicle state detection part for detecting a state of a vehicle, an actuator control part for controlling the actuator, a target torque decision part for deciding a target friction torque value Tt to be generated by the clutch in response to a time which elapses from a point in time that the engagement of the clutch starts as well as in response to a state of the vehicle, and a target oil pressure decision part for deciding a target oil pressure value Pt corresponding to the target friction torque value Tt. The actuator control part controls the actuator so as to set an oil pressure value to the target oil pressure value Pt. | 02-04-2010 |
20120142495 | LATCHING CLUTCH ASSEMBLY AND METHOD OF OPERATING THE SAME - A method of operating a friction plate clutch includes activating a clutch control mechanism to engage the friction plate clutch, and engaging a holding clutch. The clutch control mechanism is then deactivated, rendering it unable to maintain engagement of the friction plate clutch. The holding clutch is used to retain engagement of the friction plate clutch. One embodiment of the method uses a wedge clutch as the holding clutch. A latching clutch assembly includes a friction plate clutch movable between an engaged and a disengaged position. | 06-07-2012 |
20120316033 | METHOD FOR CONTROLLING AN AUTOMATED FRICTION CLUTCH - The invention relates to a method for controlling an automated friction clutch arranged in a drive train of a motor vehicle between an internal combustion engine and a transmission, and is operated in a travel-controlled manner by means of an actuator controlled by a control unit and transmits a maximum clutch torque while the friction clutch is closed, where an engine's torque provided by the internal combustion engine is reduced when the maximum clutch torque is exceeded and is increased when the maximum clutch torque rises. The engine torque is reduced which corresponds to a reduced transmittable clutch torque when the reduced transmittable clutch torque is detected and is increased to the engine torque corresponding to the maximum transmittable clutch torque after a first time interval expires, where the engine torque is limited by means of a second, longer time interval when a reduced transmittable clutch torque is detected. | 12-13-2012 |
20130023381 | ENGINE POSITION CONTROL IN AN ENGINE STOP-START POWERTRAIN - A vehicle having engine stop-start functionality includes a transmission, engine, and controller. The transmission includes a clutch, and the engine includes a crankshaft. The controller is in communication with the engine and the transmission, and is configured for detecting a commanded shut down of the engine, and then engaging the clutch to control a rate of deceleration of the crankshaft and stop the crankshaft within a calibrated range of a target stop position at the end of engine shut down. A method for controlling engine stop position includes detecting a commanded shut down of the engine, and engaging the clutch after detecting the commanded shut down to thereby control the rate of deceleration of the crankshaft and stop the crankshaft within a calibrated range of a target stop position at the end of shut down of the engine. The transmission may be automatic or it may be a dual-clutch transmission. | 01-24-2013 |
20130137547 | MACHINE POWERTRAIN AND METHOD - A machine powertrain includes an engine operably connected to a torque converter and a transmission. A switch associated with the torque converter provides a locking signal indicative of a locked or unlocked condition of the torque converter. A throttle sensor associated with the throttle provides a throttle signal. An electronic controller receives the locking signal and the throttle signal, and controls operation of the engine at least partially based on the throttle signal and the locking signal. The electronic controller determines whether a locked or unlocked condition of the torque converter is present based on the locking signal, determines whether a part throttle operating condition or a full throttle operating condition is present based on the throttle signal, and selects a derated power curve when the part throttle operating condition is present and when the torque converter switches from the unlocked to the locked condition. | 05-30-2013 |
20130137548 | MACHINE POWERTRAIN AND METHOD - A machine powertrain includes an engine operably connected to a torque converter and a transmission. A switch associated with the torque converter provides a locking signal indicative of a locked or unlocked condition of the torque converter. A throttle sensor associated with the throttle provides a throttle signal. An electronic controller receives the locking signal and the throttle signal, and controls operation of the engine at least partially based on the throttle signal and the locking signal. The electronic controller determines whether a locked or unlocked condition of the torque converter is present based on the locking signal, determines whether a part throttle operating condition or a full throttle operating condition is present based on the throttle signal, and selects a load-control power curve when the part throttle operating condition is present and when the torque converter switches from the unlocked to the locked condition. | 05-30-2013 |
20130196820 | VEHICLE ENGINE CONTROL DEVICE - A vehicle engine control device stopping fuel injection if a predetermined fuel cut condition is satisfied, is provided, during running with the fuel injection stopped, when inertia of a power transmission system rotating with the engine has a smaller rate of inertia of the power transmission system acting on rotation of an output shaft of the engine, the fuel injection being started at a lower engine rotation speed as compared to the case of a larger rate of inertia of the power transmission system acting on rotation of the output shaft of the engine, a clutch capable of connecting and interrupting power transmission between the engine and the power transmission system being interposed between the engine and the power transmission system, a rate of inertia of the power transmission system acting on rotation of the output shaft of the engine being configured to decrease as a clutch stroke of the clutch that is an operation amount of a clutch pedal increases, and an engine rotation speed for starting the fuel injection being set to a lower value as the clutch stroke increases. | 08-01-2013 |
20130225368 | CONTROL DEVICE FOR VEHICLE - Provided is a control device for a vehicle including an engine, a manual transmission, a clutch disposed between the engine and the manual transmission, and a clutch manipulation unit with which a driver controls the state of the clutch. In the control device for the vehicle, an engine revolution increasing control to increase an engine revolution is started at a predetermined start timing when the clutch is switched from a disengaged state to an engaged state by manipulation of the clutch manipulation unit at the time of starting the vehicle in an accelerator-off state, and in a case where the engine revolution is largely degrading in a predetermined period around start of the engine revolution increasing control, the start timing of the engine revolution increasing control is advanced for a next starting of the vehicle in the accelerator-off state. | 08-29-2013 |
20130331231 | METHOD AND SYSTEM PERTAINING TO DETERMINATION OF A CONTACT POINT FOR A CLUTCH - A method concerning determining of a contact point for a clutch ( | 12-12-2013 |
20140121060 | METHOD AND SYSTEM FOR CONTROLLING CATALYST TEMPERATURE - A method and a system for improving operation of a hybrid vehicle are presented. In one example, an engine exhaust after treatment device is cooled at an opportunistic time. The approach may provide improved cooling for exhaust after treatment devices and it may also improve vehicle emissions. | 05-01-2014 |
20140235407 | POWER TRANSMITTING APPARATUS - A power transmitting apparatus comprising a clutch housing, an input member connected to an engine and mounted thereon, driving-side clutch discs, a clutch member connected to an output member, driven-side clutch discs arranged between the driving-side clutch discs, a pressure member for press-contacting the driving-side clutch discs and the driven-side clutch discs together and for releasing the press-contacting force on them, and a starter, such as a kick-starter, able to apply a rotational force to the output member to start the engine, the power transmitting apparatus adapted to transmit or cut off driving power of the engine inputted to the input member to or from the output member. The power transmitting apparatus can comprise a press-contact assisting cam of an inverse-driving side for increasing the press-contacting force on the driving-side clutch discs and the driven-side clutch discs when rotational force is applied to the output member by the kick starter. | 08-21-2014 |
20140256510 | TORSIONAL DAMPING USING A TORQUE CONVERTOR BYPASS CLUTCH - A method for controlling a clutch driveably connected to an engine and vehicle wheels includes stopping fuel supply to an engine cylinder, provided a misfire occurs in the cylinder, producing slip across the clutch, resuming fuel supply to the engine cylinder, provided engine speed and engine load remain below reference limits, and adjusting a state of the clutch without reference to engine misfiring. | 09-11-2014 |
20140309080 | METHOD AND SYSTEM FOR CONTROLLING CATALYST TEMPERATURE - A method and a system for improving operation of a hybrid vehicle are presented. In one example, an engine exhaust after treatment device is cooled at an opportunistic time. The approach may provide improved cooling for exhaust after treatment devices and it may also improve vehicle emissions. | 10-16-2014 |
20140315687 | HYDRAULIC PRESSURE CONTROL DEVICE AND VEHICLE CONTROL DEVICE - A hydraulic pressure control device includes an accumulator configured to accumulate oil supplied by a mechanical pump and discharge the accumulated oil to a control system; a first oil path connected to a hydraulic path (clutch oil path) at an upstream side than an SLC linear solenoid; a second oil path connected to the hydraulic path (clutch oil path) at a downstream side of a manual valve; a connection control unit (switching valve, accumulation control valve) configured to control the connection between the accumulator and the hydraulic path to communicate the accumulator to either one of the first oil path and the second oil path; and a back pressure control oil path configured to supply the oil supplied by the mechanical pump to the back pressure side of the accumulator. | 10-23-2014 |
20150045185 | METHODS AND SYSTEMS FOR CONTROLLING CATALYST TEMPERATURE - Systems and methods for improving operation of a hybrid vehicle are presented. In one example, operation of a driveline disconnect clutch is based on temperature conditions of a catalyst. The driveline disconnect clutch may not be opened if catalyst temperature is greater than a threshold temperature so that the catalyst may be cooled. | 02-12-2015 |
20150291173 | SYSTEM FOR COMBINING THE CLUTCH PEDAL AND THE ACCELERATION PEDAL OF A CAR - The invention relates to a device for removing the clutch pedal while keeping the clutch system that will work with a new pedal produce the acceleration and the clutch at the same time | 10-15-2015 |
20150298700 | VEHICLE DRIVE CONTROLLER - A running control device of a vehicle includes an engine with cylinders, a clutch connecting/disconnecting a power transmission path between the engine and wheels, and a variable mechanism to vary an intake air amount sucked into the cylinders. The running control device performs a normal running mode by transmitting engine drive force to the wheels, a neutral inertia running mode by disconnecting the power transmission path between the engine and the wheels, and a cylinder resting inertia running mode by resting at least a part of the cylinders while the power transmission path between the engine and the wheels is connected. The running control device makes the intake air amount sucked into the cylinders larger at the time of return from the neutral inertia running mode to the normal running mode as compared to the case of return from the cylinder resting inertia running mode to the normal running mode. | 10-22-2015 |
20160052520 | VEHICLE CONTROL DEVICE AND VEHICLE CONTROL METHOD - A vehicle control device includes a controller configured to allow cranking of an engine by increasing clutch torque at a time a deceleration request is detected during free running in which a vehicle is allowed to run in a state in which a clutch is disengaged and the engine is stopped, and make an increasing rate of the clutch torque larger at a time a negative pressure of a brake booster is small than at a time the negative pressure of the brake booster is large. | 02-25-2016 |
20170234375 | SHIFT CONTROL METHOD FOR DCT VEHICLE | 08-17-2017 |