Patent application number | Description | Published |
20080197791 | Control device for vehicular drive system - A control device for a vehicular drive system controls an engine rotation speed (N | 08-21-2008 |
20080227591 | Vehicular drive system and control method - A vehicular drive system includes a standby control apparatus which controls a switch to standby control based on a switching line graph that has a standby region that places a differential state switching device in a state just before it starts to apply. This standby region is located between a differential region and a locked region on the switching line graph. Accordingly, when the differential state switching device enters the standby region from the differential region, it is placed in a state just before it starts to apply. As a result, the differential state switching device is quickly able to have the necessary torque capacity when the engine torque is increased, which suppresses a decrease in the durability of the differential state switching device. | 09-18-2008 |
20080234914 | Control apparatus for vehicular drive system - A control apparatus for a vehicular drive system including an electrically controlled differential portion having a differential mechanism, and an electric motor which is operatively connected to the differential mechanism and an operating state of which is controlled to control a differential state between input and output shaft speeds, and a transmission portion constituting a part of a power transmitting path between the differential portion and a vehicle drive wheel, the control apparatus including a differential-state switching portion for switching the differential portion between differential-state and non-differential states, a shifting control portion for controlling a shifting action of the transmission portion, and a learning control portion for effecting learning compensation of a control amount of a control element to be controlled during the shifting action, wherein the learning control portion includes a differential-state learning control portion operable to implement the learning compensation of the control amount of the control element when the shifting action takes place in the differential state of the differential portion, and a non-differential-state learning control portion operable to implement the learning compensation when the shifting action takes place in the non-differential state of the differential portion, and the shifting control portion controls the shifting action in a presently selected one of the differential and non-differential states of the differential portion, on the basis of the learning compensation implemented by one of the differential-state and non-differential-state learning control portions which is operable in the other of the differential and non-differential states of the differential portion. | 09-25-2008 |
20080269996 | Control device for vehicular power transmitting apparatus - A control device is disclosed which can obtain increased fuel economy performance depending on a kind of fuel in a vehicle having an internal combustion engine and an electric motor when the kind of fuel supplied to the internal combustion engine is altered. A determining vehicle speed (V | 10-30-2008 |
20080305923 | Control device for hybrid vehicle drive apparatus - A control device for hybrid vehicle drive apparatus is disclosed which executes an internal-combustion-engine rotation control for rotating an engine output shaft ( | 12-11-2008 |
20080308355 | OIL SUPPLY SYSTEM FOR VEHICLE - An oil supply system for a vehicle includes: a mechanical oil pump driven by an engine; an electric oil pump driven by an electric motor; a hydraulic pressure control circuit supplied with oil from the mechanical oil pump and the electric oil pump through an oil discharge passage for the mechanical oil pump and an oil discharge passage for the electric oil pump, which are connected to each other; a lubrication/cooling oil passage that is supplied with the oil from the hydraulic pressure control circuit; and a communication passage that provides communication between the lubrication/cooling oil passage and the mechanical oil pump. With this oil supply system, it is possible to prevent the electric oil pump from causing air-sucking noise, for example, in the motor-power cruise mode, and to improve the rising characteristics of the hydraulic pressure produced by the mechanical oil pump during startup of the engine. | 12-18-2008 |
20090017983 | Control apparatus for vehicular drive system - A control apparatus for a vehicular drive system including (a) an internal combustion engine, and (b) a first transmission portion and a second transmission portion disposed in a power transmitting path between the internal combustion engine and a drive wheel of a vehicle, the first transmission portion having an electrically controlled differential portion which includes a first electric motor and a differential state of which is controllable by controlling an operating state of the first electric motor, the control apparatus includes an internal-combustion-engine control portion configured to change an operating state of the internal combustion engine when it is determined that a shifting action of the second transmission portion is abnormal. | 01-15-2009 |
20090023530 | Control apparatus for hybrid vehicle power transmitting system - A control apparatus for a hybrid vehicle power transmitting system including a switching portion operable to switch a power transmitting path between a power transmitting state and a power cut-off state in response to an operation of a shift lever, the control apparatus including (a) an operating-state estimating portion configured to estimate an operating speed of an electric motor which constitutes a part of the power transmitting path or a rotating speed of a coupling element of the coupling portion, which speed is established after switching of the power transmitting path from one of the power transmitting and cut-off states to the other, and (b) a switching restricting portion configured to restrict a switching operation to switch the power transmitting path between the two states, when the estimated operating or rotating speed of the electric motor or coupling device is higher than a predetermined upper limit. | 01-22-2009 |
20090023548 | Control device for hybrid vehicle power transmitting apparatus - This invention relates to a control device for a hybrid vehicle power transmitting apparatus. A heat generation control is executed to increase a heat generation amount of an electric motor M | 01-22-2009 |
20090036263 | Control apparatus for hybrid vehicle power transmitting system - A control apparatus for a power transmitting system of a hybrid vehicle including (a) a differential portion which has a differential mechanism operatively connected to an engine and a first electric operatively connected to the differential mechanism, and a differential state of which is controlled by controlling an operating state of the first electric motor, and (b) a differential-state switching device which is incorporated in the differential mechanism and which is operable according to a differential-state switching condition, to switch the differential mechanism between a differential state in which the differential mechanism is operable to perform a differential function and a non-differential state in which the differential mechanism is not operable to perform the differential function, the control apparatus including a differential-state-switching-condition changing portion operable to change a differential-state switching condition for switching the differential-state switching device to switch the differential mechanism between the differential and non-differential states, when a temperature of the power transmitting system is lower than a predetermined threshold value. | 02-05-2009 |
20090082154 | Control apparatus for vehicular drive system - A control apparatus for a vehicular drive system including (a) an electrically controlled differential portion having a differential mechanism and operable to control a differential state between its input and output speeds by controlling an operating state of an electric motor connected to a rotary element of the differential mechanism, and (b) a transmission portion which constitutes a part of a power transmitting path between the electrically controlled differential portion and a drive wheel of a vehicle, the control apparatus including a non-iso-power shifting control portion configured to implement a non-iso-power shifting control of the vehicular drive system (differential portion) when a required special shifting action of the transmission portion not according to a shifting boundary line map should be restricted. | 03-26-2009 |
20090093330 | Hybrid vehicle drive system - A drive system of a hybrid vehicle, including an engine, a first electric motor, a second electric motor operatively connected to a drive wheel of the hybrid vehicle, and two planetary gear mechanisms, and wherein the two planetary gear mechanisms have at least four rotary elements arranged to permit the drive system to be placed in a selected one of a first operation mode in which the rotary element connected to the engine and the rotary element connected to the first electric motor are disposed on opposite sides of the rotary element connected to the drive wheel and the second electric motor, as seen in a collinear chart in which the four rotary elements are located at respective four different positions along a base line, and a second operation mode in which the rotary element connected to the first electric motor and the rotary element connected to the drive wheel and the second electric motor are disposed on opposite sides of the rotary element connected to the engine, as seen in said collinear chart. | 04-09-2009 |
20090114464 | Control apparatus for vehicular power transmitting system - A control apparatus for a vehicular power transmitting system including (a) an electrically controlled differential portion operable to distribute an output of a drive power source of a vehicle to a first electric motor and a power transmitting member, (b) a second electric motor connected to a power transmitting path between an output shaft of the drive power source and a drive wheel of the vehicle, (c) a coupling device provided in the electrically controlled differential portion and operable to selectively switch the differential portion between a differential state and a non-differential state, and (d) an electric-energy storage device operable to store and discharge an electric energy supplied from the first or second electric motor, the control apparatus including a torque-receiving-proportion control portion configured to control a proportion of torque values of a reaction torque corresponding to a torque acting on a predetermined member of the electrically controlled differential portion, which torque values are respectively received by the first electric motor and the coupling device, such that a ratio of the torque value received by the coupling device, with respect to the reaction torque, increases with an increase of a difference of an electric energy amount consumed by the second electric motor from an electric energy amount generated by the first electric motor. | 05-07-2009 |
20090209382 | Control apparatus of vehicle drive apparatus - In one embodiment, when a switching clutch or a switching brake is engaged and thus a differential of a differential unit is limited, the gear ratio of a continuously variable transmission unit is adjusted. On the other hand, when the switching clutch and the switching brake are both released and thus the differential of the differential unit is not limited, an overall gear ratio obtained from the gear ratio of the differential unit and the gear ratio of the continuously variable transmission unit is adjusted. | 08-20-2009 |
20090258747 | Control apparatus for vehicular drive system - A vehicular power transmitting system including a transmission portion constituting a part of a power transmitting path, an electric motor connected to the power transmitting path, an electrically controlled differential portion connected to the electric motor and having a differential state controllable according to a change of an operating speed of the electric motor, a casing accommodating the transmission portion, the electric motor and the electrically controlled differential portion, and a support member for supporting a rotor of the electric motor, the support member including a support portion formed in one axial end portion thereof, at which the rotor is supported rotatably about its axis, and a tapered portion having a diameter increasing in an axial direction from the one axial end portion toward the other axial end portion at which the support member is fixed to the casing, and wherein a winding portion of a stator of the electric motor is disposed in a space formed radially outwardly of the tapered portion, while a fluid passage portion for supplying a working fluid to frictional coupling devices of the transmission portion is disposed in a space formed radially inwardly of the tapered portion. | 10-15-2009 |
20100004089 | Control device for hybrid vehicle drive apparatus - A control device for hybrid vehicle drive apparatus is disclosed. Upon receipt of a start-up request on an engine ( | 01-07-2010 |
20100087287 | Control device for vehicular drive apparatus - The present invention provides a control device for a vehicular drive apparatus with a structure of enabling the suppression of gearshift shock occurring during concurrent shifting executed of a first shifting portion and a second shifting portion. When the concurrent shifting are executed around the same time in which a down shift in one of a differential portion (first shifting portion) and an automatic shifting portion (second shifting portion) and an upshift in the other of them are executed, a first electric motor is caused to control a rotation speed of a second rotary element (sun gear). Thus, a shifting progress state upon the concurrent shifting is controlled. This causes shifting directions i.e., variation of the engine rotation speed in shifting of a shifting mechanism to be set in a unidirectional, enabling the suppression of gearshift shock. | 04-08-2010 |
20100116235 | Engine startup control device for vehicle - An engine start-up control device for a vehicle is provided with a structure which prevents the occurrence of an uncomfortable shock arising from amplified engine load torque fluctuation caused by resonance, when an output of a first motor generator starting up an engine by driving the same is limited. With a second motor generator having reactive torque restricting the rotation of a transfer member, the first motor generator rotatably drives a sun gear to crank the engine for start-up thereof. When this takes place, if the output of the first motor generator is limited, torque reference reactive-force control is executed to control reactive torque of the second motor generator in accordance with a predetermined torque whereby when the engine load torque exceeds a predetermined value, a rotation speed variation of the transfer member is permitted against reactive torque such that the rotation speed variation of the transfer member allows engine load torque to escape for thereby precluding engine load torque fluctuation to be amplified due to resonance. | 05-13-2010 |
20100125019 | CONTROL DEVICE FOR VEHICULAR POWER TRANSMITTING APPARATUS - In a vehicular power transmitting apparatus provided with an electrically-controlled differential portion in which controlling an operating state of an electric motor controls a differential state of a differential mechanism, a control device for starting up a drive force source in an appropriate mode depending on a vehicle condition can be provided. The control device includes drive-force source start control means | 05-20-2010 |
20100138086 | CONTROL APPARATUS FOR POWER TRANSMISSION SYSTEM OF HYBRID VEHICLE - A stop range changing unit changes an engine stop range, which is a cruise range in which an operation of an engine is stopped, based on a type of fuel that is burned in the engine and that is determined by a fuel type determination unit. Therefore, the engine is stopped or started up under a cruise condition that suits the fuel type. Accordingly, even if start-up performance of the engine varies due to variation of the fuel type, unfavorable effects of the variation in the start-up performance of the engine on a smooth motion of a hybrid vehicle is alleviated. | 06-03-2010 |
20100179010 | HYBRID VEHICLE POWER TRANSMISSION DEVICE AND HYBRID VEHICLE - A hybrid vehicle power transmission device provided with a power distribution mechanism composed of a planetary gear device for distributing motive power of a drive source to a motor and an output shaft is further provided with a damper device in a power transmission path between the power distribution mechanism and a first motor. Consequently, the damper device receives only reaction torque dealt by the first motor through the power distribution mechanism with respect to drive torque of an engine. Thus, since the torque transmitted to the damper device is smaller than the drive torque of the engine, the torque capacity of the damper device can be decreased and the size of the damper device can be reduced. As a result, the overall size of the power transmission device can be similarly reduced. | 07-15-2010 |
20100197449 | CONTROL DEVICE FOR HYBRID VEHICLE POWER TRANSMITTING APPARATUS - A control device is provided for a hybrid vehicle power transmitting apparatus wherein when a fuel type supplied to an engine is altered, a drop in startability of the engine resulting from alteration on the fuel type is suppressed. Fuel-type determining means determines the fuel type for use in operating the engine, based on which a reactive control representing a control of reactive control of a second electric motor counteracting rotational resistance of the engine during engine startup, is altered. Accordingly, second-motor torque (reactive torque) for increasing an engine rotation speed during engine startup is adjusted depending on the fuel type, thereby increasing a temperature of fuel compressed and expanded in the engine, to a level available to initiate an ignition. This prevents the alteration of the fuel type from causing degradation in startability of the engine when the fuel type supplied to the engine is altered. | 08-05-2010 |
20110049814 | SEALING STRUCTURE USING A LIQUID GASKET - A sealing structure using a liquid gasket, having a liquid gasket interposed in the form of a thin film between mating surfaces of a first member and a second member, thereby preventing the movement of oil via the mating surfaces, the sealing structure, includes at oil-side end portions of the mating surfaces, a gasket lump portion that is formed of an excess of the thin-film liquid gasket squeezed out from the mating surfaces, and an oil-shielding portion that covers a boundary portion where the gasket lump portion and the first member come into contact, thereby preventing a flow of the oil from directly striking the boundary portion, and is provided on an oil-flow upstream side from the boundary portion. | 03-03-2011 |
20110127095 | CONTROL DEVICE FOR POWER TRANSMISSION DEVICE FOR VEHICLE - When an engine is driven on a different type of fuel (for example, ethanol-containing fuel) from a reference fuel (for example, gasoline) and the engine torque is thus greater than that produced when the engine is driven on the reference fuel, a differential state control device expands a non-differential range compared to that at the time when the reference fuel is used. Thus, in the case where a plurality of types of fuel including the reference fuel are supplied to the engine, the advantage of switching a power distribution mechanism between a differential enabled state and a non-differential state can be fully utilized in correspondence with engine torque characteristics which may vary in accordance with the type of fuel for the engine. As a result, the fuel consumption rate can be reduced in correspondence with the plurality of types of fuel supplied to the engine, for example. | 06-02-2011 |
20110221294 | BREATHER DEVICE AND DRIVE DEVICE - A breather device is provided at a housing case housing a rotating electric machine, for adjusting a pressure inside the housing case. The rotating electric machine includes a stator core formed by stacking a plurality of steel plates. The breather device communicates with an inside of the housing case by a gap between the steel plates. | 09-15-2011 |
20120283065 | CONTROL APPARATUS FOR VEHICULAR POWER TRANSMITTING SYSTEM - A control apparatus for a vehicular power transmitting system includes a shifting-point changing portion configured to change a shifting point at which a determination to perform a shifting action of a transmission portion is made, such that a shifting portion is changed according to a shifting response of the transmission portion. Alternatively, the control apparatus includes a shift-control start-point changing portion configured to change a shift-control start point at which the determination to perform the shifting action is made, such that the shift-control start point is changed according to the shifting response of the transmission portion, and a compulsory shift-control starting portion configured to make the determination when an operating point of a differential portion electric motor has reached the shift-control start point. | 11-08-2012 |
20140194238 | HYBRID VEHICLE DRIVING APPARATUS - A hybrid vehicle driving apparatus includes: a first planetary gear mechanism; a second planetary gear mechanism; a clutch that connects and disconnects a carrier of the first planetary gear mechanism to and from a carrier of the second planetary gear mechanism; and a brake that regulates the rotation of the carrier of the second planetary gear mechanism by engaging, in which a sun gear, the carrier, and a ring gear of the first planetary gear mechanism are respectively connected to a first rotating electric machine, an engine, and a driving wheel, and a sun gear and a ring gear of the second planetary gear mechanism are respectively connected to a second rotating electric machine and the driving wheel. | 07-10-2014 |
20140194239 | HYBRID VEHICLE DRIVING DEVICE - A hybrid vehicle driving device includes a first planetary gear mechanism, a second planetary gear mechanism, a clutch configured to connect and disconnect a carrier of the first planetary gear mechanism to and from a ring gear of the second planetary gear mechanism, and a brake configured to regulate a rotation of the ring gear of the second planetary gear mechanism by being engaged. The second planetary gear mechanism is of a double pinion type, a sun gear of the first planetary gear mechanism is connected to a first electric rotating machine, a carrier thereof is connected to an engine, and a ring gear thereof is connected to a driving wheel, respectively, and a sun gear of the second planetary gear mechanism is connected to a second electric rotating machine, and a carrier thereof is connected to the driving wheel, respectively. | 07-10-2014 |
20140296013 | HYBRID VEHICLE DRIVING DEVICE - A hybrid vehicle driving device includes a first planetary gear mechanism, a second planetary gear mechanism, and a clutch, wherein a sun gear of the first planetary gear mechanism is connected to a first electric rotating machine, a carrier of the first planetary gear mechanism is connected to a driving wheel, a ring gear of the first planetary gear mechanism is connected to an engine, a sun gear of the second planetary gear mechanism is connected to a second electric rotating machine, the carrier of the second planetary gear mechanism is connected to the ring gear of the first planetary gear mechanism and the engine through the clutch, and a ring gear of the second planetary gear mechanism is connected to the driving wheel. | 10-02-2014 |
20140343780 | CONTROL SYSTEM OF A VEHICLE - Provided is a control system of a vehicle equipped with first and second motors/generators, and a differential device including a ring gear and a sun gear individually connected to the first and second motors/generators and a carrier connected to a driving wheel side, wherein at the time an SOC of a battery exceeds a predetermined threshold value during regenerative driving operations of the first and second motors/generators, a power driving operation of any one of the first and second motors/generators is selectively performed. | 11-20-2014 |
20140358349 | CONTROL DEVICE FOR VEHICLE - A control device of a vehicle includes a first electric motor; a differential mechanism having a rotating element coupled to the first electric motor, a rotating element that is an output rotating member coupled to drive wheels in a power transmittable manner, and a rotating element coupled to a non-rotating member by actuation of a lock mechanism; and a second electric motor coupled to the drive wheels in a power transmittable manner. During motor running for running with output torques from the first electric motor and the second electric motor used together in an actuated state of the lock mechanism, a drive torque shared by the first electric motor is made smaller in a requested drive torque when a rotation speed of a pinion making up the differential mechanism is higher. | 12-04-2014 |
20140371017 | HYBRID VEHICLE DRIVE DEVICE - A hybrid vehicle drive unit including a first planetary gear mechanism; a second planetary gear mechanism; a clutch; and a brake, wherein a first sun gear that is a sun gear of the first planetary gear mechanism is connected to a first rotating electric machine, a first ring gear that is a ring gear of the first planetary gear mechanism is connected to an engine, and a first carrier that is a carrier of the first planetary gear mechanism is connected to a second rotating element of the second planetary gear mechanism and to driving wheels, a first rotating element of the second planetary gear mechanism is connected to the engine and the first ring gear via the clutch, and a third rotating element is connected to a second rotating electric machine, the first rotating element is a sun gear of the second planetary gear mechanism, and the brake regulates a rotation of the first rotating element. | 12-18-2014 |
20140371964 | HYBRID VEHICLE CONTROL APPARATUS - A control apparatus for a hybrid vehicle is provided with a differential mechanism having a first rotary element, a second rotary element serving as an input rotary member and connected to an engine, and a third rotary element serving as an output rotary member, an electric motor connected to said first rotary element, and a locking mechanism configured to fix an output shaft of said engine to a stationary member, the control apparatus comprising: an electric motor drive control portion configured to reduce an absolute value of a torque of said electric motor before said locking mechanism is changed from a locking state in which said output shaft is fixed to the stationary member while a drive force of said electric motor is transmitted to said third rotary element, to an unlocking state in which said output shaft is released from the stationary member. | 12-18-2014 |
20150021110 | DRIVING DEVICE FOR HYBRID VEHICLE - A driving device for a hybrid vehicle including a power transmission mechanism ( | 01-22-2015 |
20150024895 | DRIVING DEVICE FOR HYBRID VEHICLE - A driving device for hybrid vehicle provided with an engine, first and second electrical machines, a first and second differential mechanisms, and a switching device in which the first and second differential mechanisms are connected to each other through output rotational elements. The engine and the first and second rotating electrical machines are connected to different rotational elements out of rotational elements of the first and second differential mechanisms. The switching device switches between an independent mode and a four-element mode. In the four element mode, rotational elements connected to the engine, first and second rotating electrical machines, and the output rotational elements differentially rotate, and in an alignment chart in the four-element mode, any one of rotational elements connected to the first and second rotating electrical machines is located between a rotational element connected to the engine and the output rotational elements. | 01-22-2015 |
20150025729 | DRIVE SYSTEM FOR VEHICLE - A drive system for a vehicle includes a first motor, a second motor, and a differential mechanism that includes a first rotation element connected to the first motor, a second rotation element connected to the second motor, and a third rotation element connected to driving wheels, the first rotation element and the second rotation element are located on the opposite sides with the third rotation element interposed therebetween in a collinear diagram of the differential mechanism, and an area that is not able to be selected as a target control quantity is determined within a range of the control quantity that is able to be output by one motor of the first motor and the second motor. | 01-22-2015 |
20150040720 | VEHICULAR TRANSMISSION - A vehicular transmission includes a transmission input shaft to which engine torque is input, first and second differential mechanisms as transmission mechanisms to which the engine torque is input through the transmission input shaft, a torque limiter arranged between the transmission input shaft and an engine configured to enable torque transmission between the transmission input shaft and an engine output shaft and inhibit an input of excessive torque larger than predetermined torque between the transmission input shaft and the engine output shaft, and a one-way clutch arranged between the torque limiter and the engine for prohibiting reverse rotation of the engine while allowing normal rotation of the engine. | 02-12-2015 |
20150072819 | HYBRID VEHICLE DRIVING APPARATUS - Provided is a hybrid vehicle driving apparatus including: a power transmission mechanism which is connected to an engine and is able to output a rotation of the engine while changing the rotation speed; a differential mechanism which connects the power transmission mechanism and a drive wheel to each other; and a regulation device, wherein the differential mechanism includes a first rotation component which is connected to an output component of the power transmission mechanism, a second rotation component which is connected to a first rotating electric machine, and a third rotation component which is connected to a second rotating electric machine and the drive wheel, and wherein the regulation device switches between a state where a differential operation of the differential mechanism is regulated and a state where the differential operation of the differential mechanism is allowed. | 03-12-2015 |