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 |
20080200303 | Control device for vehicular drive system - Hybrid controller | 08-21-2008 |
20080207387 | PLANETARY GEAR TYPE MULTISTAGE TRANSMISSION FOR VEHICLE - The transmission | 08-28-2008 |
20080208422 | Control system and control method of vehicular drive system - A control system of a vehicular drive system is provided with a controller that reduces regeneration torque of a second motor when an automatic transmission that is shifted down during coasting is in an inertia phase. By reducing the regenerating torque of the second motor during the inertia phase, the amount of work required for producing regeneration torque of the second motor is reduced, and the rotational speed of a power transmitting member coupled to a differential unit can be easily raised, whereby shift shock at the time of shifting is favorably reduced. | 08-28-2008 |
20080215214 | Control apparatus and control method for vehicular drive apparatus - A control apparatus and a control method for a vehicular drive apparatus that includes a driving power source, and a power transmission device that transmits power from the driving power source to a drive wheel are provided. It is determined that a malfunction occurs in the power transmission device, when a comparison value remains equal to or above a predetermined value for a predetermined period. The comparison value is obtained by making a comparison between an actual value and a theoretical value that relate to a rotational speed of a predetermined rotational member that constitutes at least a part of the vehicular drive apparatus. The predetermined period is set according to an operating state of the power transmission device. Thus, it is possible to reduce the possibility that it is erroneously determined that a malfunction occurs, and to quickly determine that a malfunction occurs. | 09-04-2008 |
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 |
20080240941 | Vehicular oil pump control apparatus - A control apparatus for controlling two oil pumps which are provided on a vehicle wherein the two oil pumps are selectively driven by respective different drive power sources such that one of the two oil pumps is operated while the other oil pump is held at rest, the control apparatus including an air removal control portion configured to temporarily operate the above-indicated other oil pump during an operation of the above-indicated one oil pump, to remove air staying at and around an oil inlet of the above-indicated other oil pump. | 10-02-2008 |
20080242464 | Electric oil pump control apparatus for vehicle, electric oil pump control method for vehicle, and shift apparatus - When the shift position is changed to the drive position, the amount of oil that is supplied to an automatic shift unit is increased by a larger amount as the standby hydraulic pressure is lower. Therefore, even if the standby hydraulic pressure is decreased, the required hydraulic pressure is more easily achieved when the shift position is changed to the drive position. Therefore, it is possible to decrease the standby hydraulic pressure without slowing down the response to the automatic shift unit to the hydraulic pressure and reducing the useful life of the automatic shift unit. Thus, the amount of electricity consumed by the electric oil pump is reduced. As a result, it is possible to enhance the fuel efficiency. | 10-02-2008 |
20080254934 | Control device for hybrid vehicle drive apparatus - A control device for hybrid vehicle drive apparatus has a differential mechanism operative to perform a differential action and an electric motor. The control device prevents a second electric motor from reaching a high-speed rotation with a likelihood of degradation occurring in durability of the second electric motor when a āDā position is switched into an āNā position during a running of a vehicle. When a shift lever ( | 10-16-2008 |
20080255748 | Control device for hybrid vehicle drive apparatus - When the power transmitting path in an automatic shifting portion ( | 10-16-2008 |
20080258474 | Engine starting control apparatus for hybrid vehicle - A control apparatus for a drive system of a hybrid vehicle including (a) an electrically controlled differential portion which has an engine, a first electric motor, and a differential mechanism operatively connected to the engine and the first electric motor and a differential state of which is controlled by controlling an operating state of the first electric motor, (b) a mechanical transmission portion constituting a part of a power transmitting path, and (c) a second electric motor connected to a power transmitting path between the electrically controlled differential portion and a drive wheel of the hybrid vehicle, the control apparatus including a control portion which is operable when a terminal portion of a shifting action of the mechanical transmission portion and a starting operation of the engine overlap each other, the control portion being configured to implement one of the shifting action and the starting operation prior to the other. | 10-23-2008 |
20080261749 | MULTISTAGE TRANSMISSION - With the automatic transmission | 10-23-2008 |
20080261770 | Control apparatus for hybrid vehicle drive system - A control apparatus for a drive system of a hybrid vehicle including (a) an engine, (b) an electrically controlled differential portion which has a first electric motor, and a differential mechanism operatively connected to the engine and the first electric motor and a differential state of which is controlled by controlling an operating state of the first electric motor, (c) a mechanical transmission portion constituting a part of a power transmitting path, and (d) a second electric motor connected to a power transmitting path between the electrically controlled differential portion and a drive wheel of the hybrid vehicle, the control apparatus including a control portion which is operable when a terminal portion of a shifting action of the mechanical transmission portion and a starting operation of the engine overlap each other, the control portion being configured to implement one of the shifting action and the starting operation prior to the other. | 10-23-2008 |
20080269010 | Control device for vehicular power transmitting apparatus - A vehicle includes a differential portion ( | 10-30-2008 |
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 |
20080293539 | Control apparatus for vehicular drive system - A control apparatus for a vehicular drive system including (a) a first drive power source, (b) an electrically controlled differential portion which has a differential mechanism and a second drive power source connected to a rotary element of the differential mechanism and which is operable to control a differential state between a rotating speed of its input shaft connected to the first drive power source and a rotating speed of its output shaft by controlling an operating state of the second drive power source, (c) a switching portion operable to switch a power transmitting path between the electrically controlled differential portion and a drive wheel of a vehicle, between a power transmitting state and a power cut-off state, and (d) a third drive power source operatively connected to the power transmitting path, the control apparatus including a power-source torque-variation reducing portion configured to reduce an amount of variation of a torque of the first drive power source or the third drive power source upon switching of the power transmitting path from the power cut-off state to the power transmitting state. | 11-27-2008 |
20080300100 | Control apparatus for vehicular power transmitting system - A control apparatus for a vehicular power transmitting system including (a) an electrically controlled differential portion which has a differential mechanism and a first electric motor operatively connected to a rotary element of the differential mechanism and which is operable to control a differential state between a rotating speed of its input shaft connected to a drive power source and a rotating speed of its output shaft by controlling an operating state of the first electric motor, (b) a transmission portion ( | 12-04-2008 |
20080300761 | Control apparatus for vehicular power transmitting system - A control apparatus for a vehicular power transmitting system including (a) an electrically controlled differential portion which has a differential mechanism and a first electric motor connected to a rotary element of the differential mechanism and which is operable to control a differential state between a rotating speed of its input shaft connected to a drive power source and a rotating speed of its output shaft by controlling an operating state of the first electric motor, and (b) a switching portion operable to switch a power transmitting path for transmitting power from the drive power source, between a power transmitting state and a power cut-off state, the control apparatus including a control range setting portion configured to set one of two different control ranges of a rotating speed of the output shaft, depending upon whether the power transmitting path is placed in the power transmitting state or said power cut-off state, by the switching portion. | 12-04-2008 |
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 |
20080312029 | Control apparatus for vehicular power transmitting system - A control apparatus for a vehicular power transmitting system including (a) an electrically controlled differential portion which has a differential mechanism and a first electric motor connected to a rotary element of the differential mechanism and which is operable to control a differential state between rotating speeds of its input and output shafts by controlling an operating state of the first electric motor, and (b) a step-variable 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 coasting-shift-down control portion configured to implement a coasting shift-down action of the step-variable transmission portion during a coasting run of the vehicle, only when a parameter correlating with a shaft torque of the step-variable transmission portion during the coasting run is held within a predetermined range. | 12-18-2008 |
20080318726 | Control apparatus for vehicular power transmitting system - A control apparatus for a vehicular power transmitting system including (a) an electrically controlled differential portion which has a differential mechanism and an electric motor operatively connected to a rotary element of the differential mechanism and which is operable to control a differential state between a rotating speed of its input shaft connected to an engine and a rotating speed of its output shaft by controlling an operating state of the electric motor, and (b) a transmission portion which constitutes a part of a power transmitting path and which functions as an automatic transmission portion, the control apparatus including a shifting control portion configured to set a shifting point of the transmission portion, on the basis of a delay of a response of a change of an operating speed of the engine to a change of a required vehicle drive force to be transmitted through the vehicular power transmitting system. | 12-25-2008 |
20080318727 | Control device for vehicle power transmission device - A control device for a vehicle power transmission device including an electrical differential motion portion in which a differential state between input shaft rotation speed and output shaft rotation speed is controlled through control of the operation state of an electric motor linked to a rotating element of a differential motion portion, and a power connection-disconnection device constituting a portion of a power transmission path, includes a controller that lessens a transmission capacity of the power connection-disconnection device if during a switch of the state of the vehicle power transmission device from a non-driving state to a driving state, a change in input torque to the vehicle power transmission device occurs, in comparison with when the change in the input torque does not occur. Therefore, the control device reduces the shift shock when the vehicle power transmission device is switched from the non-driving to the driving state. | 12-25-2008 |
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 |
20090017984 | Engine start-up device for hybrid vehicle power transmitting device - In an engine start-up device, engine start-up means | 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 |
20090023547 | Control apparatus for vehicular drive system - A control apparatus for a drive system of a vehicle including (a) an electrically controlled differential portion having (i) a differential mechanism, (ii) a first electric motor operatively connected to a rotary element of the differential mechanism, (iii) a drive power source, an input shaft ( | 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 |
20090029825 | Control device for vehicular power transmitting device - This invention relates to a control device for a vehicular power transmitting device. The control device has shifting-point altering means | 01-29-2009 |
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 |
20090042690 | Control device for vehicle power transmitting apparatus - There is provided correspondence controlling means | 02-12-2009 |
20090042691 | Control device for vehicular power transmitting apparatus - A control device for a vehicular power transmitting apparatus, having engaging devices including a one-way clutch, is disclosed which prevents a locked state of the one-way clutch from causing the occurrence of slippages of other engaging devices to avoid a drop in durability of the engaging device. To achieve this object, engaging a plurality of engaging devices in combined operations allows a plurality of gear positions to be established. A shifting mechanism (vehicular power transmitting apparatus) | 02-12-2009 |
20090055073 | Vehicular engine control apparatus - An engine control apparatus for a vehicle provided with a drive system including an engine and a transmission portion which constitutes a part of a power transmitting path, the engine control including an engine control portion configured to change a timing of initiation or a method of a control of the engine according to contents of a requirement for implementing the control of the engine, when the control of the engine and a shifting control of said transmission portion are concurrently required to be implemented. | 02-26-2009 |
20090062070 | Control device for vehicular power transmitting device - In a control device for a vehicular power transmitting device, if engine torque T | 03-05-2009 |
20090069147 | Vehicular drive control apparatus and method for controlling a vehicular drive apparatus - When shifts are performed at the same time in first and second transmitting portions and the gear ratios of those transmitting portions change in opposite directions, a simultaneous shift control unit controls the shift in the first transmitting portion using a first electric motor and controls the shift in the second transmitting portion using a second electric motor such that the shift in one transmitting portion, from among the first and second transmitting portions, ends while the shift in the other transmitting portion is being performed. The shifts in the two transmitting portions will not end at the same time so the amount of shift shock felt by an occupant can be reduced. Also, the shifts in the two transmitting portions are controlled by the first and second electric motors so the progress of the shifts in those transmitting portions can be actively adjusted. | 03-12-2009 |
20090069965 | VEHICULAR DRIVE SYSTEM - Vehicular drive system which is small-sized and/or improved in its fuel economy. | 03-12-2009 |
20090069966 | VEHICULAR DRIVE SYSTEM - Vehicular drive system which is small-sized and/or improved in its fuel economy. | 03-12-2009 |
20090071142 | Hydraulic control device for vehicular hydraulic control circuit - In a vehicular hydraulic control circuit equipped with a mechanically-operated oil pump and an electrically-operated oil pump, a hydraulic control device is provided for reducing a high load imposed on the electrically-operated oil pump, when the electrically-operated oil pump is started during stoppage of the mechanically-operated oil pump. When the electrically-operated oil pump ( | 03-19-2009 |
20090075774 | VEHICULAR DRIVE SYSTEM - Vehicular drive system which is small-sized and/or improved in its fuel economy. | 03-19-2009 |
20090075779 | Control device for vehicular power transmitting apparatus - The present invention provides, in a vehicular power transmitting apparatus including a differential portion electrically controlled, a control device which can quickly decrease the engine rotation speed, even if the operational state of an electric motor is limited. An engine-stop controlling means ( | 03-19-2009 |
20090076693 | Control device and control method for vehicle power transmission device - When an engine stop control is executed while an automatic ratio shift portion is in a neutral state, a switching clutch is operated, so that a differential portion carrier of a differential portion planetary gear device that is linked to an engine, and a differential portion ring gear linked the automatic ratio shift portion are integrally rotated. Therefore, along with the engine stop control, the rotation speed of the rotating elements of the differential portion planetary gear device is reduced while the rotating elements are integrally rotated or substantially integrally rotated. Since the rotating elements are rotated integrally or substantially integrally, the high rotation speed of the differential portion ring gear linked to the automatic ratio shift portion, which tends to have a heightened rotation speed particularly during the neutral state, is prevented. | 03-19-2009 |
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 |
20090088291 | Control device for vehicular power transmitting apparatus - There is provided a control device for a vehicular power transmitting apparatus of equipped with a differential portion is provided for suppressing a durability decrease of the differential portion or component parts related thereto upon preventing a rotary element of the differential portion from reaching a high-speed rotation. Rotation-stop determining means | 04-02-2009 |
20090088937 | Vehicle power transmission system - A vehicle power transmission system has a first electric motor, a differential section, a power interruption element forming part of a power transmission path, a second electric motor connected to a power transmission path, and a control device that maintains the output rotational speed of the differential section at a predetermined constant value or at a value within a predetermined range until the engagement of the power interruption element is completed, so as to control a rotational speed of a primary power source by the first electric motor during the period when the state of the vehicle power transmission system is being switched front a non-drive mode to a drive mode. | 04-02-2009 |
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 |
20090118955 | Control device for vehicular drive system - A vehicular drive system switchable between a continuously-variable and step-variable shifting states, and a control device for controlling the vehicular drive system so as to reduce a shifting shock of an automatic transmission included in the drive system, which takes place due to an overlap control involving a switching control of the drive system and a shifting control of the automatic transmission. | 05-07-2009 |
20090151491 | Power transmission apparatus for vehicle - A power transmission apparatus for a vehicle includes: a first shift unit; a second shift unit; an electric motor connected to a rotating element of the first shift unit or the second shift unit so that the rotational speed changes in accordance with a gear-shift of the first shift unit or the second shift unit; and a control unit that controls at least one of start timings of inertia phases of the gear-shifts of the first and second shift units using the electric motor, when the gear-shifts of the first and second shift units are performed simultaneously and gear ratios of the first and second shift units are changed in opposite directions. With this control, in the simultaneous gear-shift, the gear-shift of one of the shift units is started and completed in a period from start of the gear-shift of the other shift unit until completion of this gear-shift. | 06-18-2009 |
20090152029 | Control apparatus and control method for power transmission apparatus for vehicle - A control apparatus for a power transmission apparatus for a vehicle controls the rotational speed of an output shaft of an electric differential portion to a predetermined rotational speed until at least one of a control that starts a main power source and a control that stops the main power source ends, if at least one of a shift position and a shift range is changed from a parking position to a neutral position while the at least one of the control that starts the main power source and the control that stops the main power source is being executed. | 06-18-2009 |
20090156359 | Power transmission apparatus for vehicle - A power transmission apparatus for a vehicle includes a main drive power source; a first shift unit that has an input shaft connected to the main drive power source; a second shift unit; at least one electric motor connected to a rotating element of the first shift unit or a rotating element of the second shift unit so that the rotational speed of the electric motor is changed in accordance with a gear-shift of the first shift unit or the second shift unit, and that is able to control the rotational speed of the main drive power source by changing its rotation; and a control unit that executes control so that the direction in which the rotational speed of the main drive power source is changed is maintained constant throughout a gear-shift, when the gear-shift is a simultaneous gear-shift in which the gear-shift of the first shift unit and the gear-shift of the second shift unit are performed simultaneously and a gear ratio of the first shift unit and a gear ratio of the second shift unit are changed in opposite directions. With the control executed by the control unit, it is possible to effectively suppress occurrence of shift shock. | 06-18-2009 |
20090157269 | System and method for controlling power transmission apparatus for vehicle - A control method for an apparatus which includes a first shift portion that includes a motor and a differential portion, and that is able to function as an electric differential portion; and a second shift portion that is a stepped shift portion, and that is connected to the first shift portion, wherein the apparatus transmits power output from an engine to a drive wheel, the control method includes: determining whether a degree of progress of an upshift of the second shift portion that is performed when a vehicle is driven using solely the motor as a drive power source, has reached a predetermined level; determining whether the engine should be started; and stopping the upshift, and starting the engine, when it is determined that the degree of the progress of the upshift has not reached the predetermined level, and it is determined that the engine should be started. | 06-18-2009 |
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 |
20090305832 | Vehicle power transmission system - A vehicle power transmission system includes: an electric differential unit that includes a differential mechanism, having an input shaft and an output shaft, and an electric motor and that allows controlling a differential state between the rotational speed of the input shaft coupled to an engine and the rotational speed of the output shaft by controlling an operating state of the electric motor coupled to a rotating element of the differential mechanism; a transmission unit that is arranged in a power transmission path between the electric differential unit and a drive wheel; and a controller that, when the transmission unit is shifting speeds, prelimits an upper limit of the rotational speed of the engine when the rotational speed of the engine increases because of torque reduction control by the electric motor. With the above control, the rotational speed of the engine is prevented from reaching a high rotational speed region. | 12-10-2009 |
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 |
20100022346 | CONTROL DEVICE FOR VEHICULAR DRIVE SYSTEM - A control device for a vehicular drive system having (i) an engine, (ii) an electrically controlled differential portion operative to control an operating state of an electric motor connected to a rotary element of a differential mechanism for power-transmissive state for thereby controlling a differential state between a rotation speed of an input shaft connected to the engine, and a rotation speed of an output shaft, and (iii) a shifting portion forming a part of a power-transmitting mechanism between the electrically controlled differential portion and drive wheels, the control device including high-speed rotation preventing means for preventing high-speed rotations of each rotary elements of both the differential mechanism and the shifting portion, when a drop occurs or drop occurrence is predicted, in a supplied hydraulic pressure applied to a hydraulically operated frictional engaging device of the shifting portion, to a level less than a given value, wherein the high-speed rotation preventing means reduces torque or rotation speed of an input shaft of the shifting portion by controlling the engine or the electric motor. | 01-28-2010 |
20100044132 | CONTROL DEVICE OF VEHICULAR DRIVING APPARATUS - A control device of a vehicular driving apparatus is provided, which can restrain an unnecessary rotational change of a first electric motor can be restrained when a shifting in a differential portion and a shifting in a transmission portion are overlapped in shifting periods. Upon executing the shiftings of a differential portion and an automatic transmission portion | 02-25-2010 |
20100069192 | POWER TRANSMISSION UNIT AND METHOD FOR ASSEMBLING SAME - A power transmission unit including an electric motor with a rotor arranged on an inner circumference of a stator and concentrically with the stator, and a transmission mechanism for transmitting power. A portion of a predetermined constructional element of the transmission mechanism protrudes toward the stator or rotor side, and the protruding portion functions as a guide portion for inserting the rotor into the stator concentrically. Thereby, a convenience in assembling an electric motor to be arranged adjacent to a transmission mechanism of a power transmission unit in a casing is realized. | 03-18-2010 |
20100069196 | Control apparatus for vehicular drive system - A control apparatus for a vehicular drive system, including an engine speed limiting device configured to limit operating speed of engine to an upper limit determined according to speed ratio of automatic transmission portion, so as to prevent a rise of operating speed of first electric motor into excessive rise range, so that the excessive rise of the first electric motor speed due to a shifting action of the automatic transmission portion is prevented to improve the durability of the first electric motor. For example, the speed of the engine is limited to the upper limit when the automatic transmission portion is shifted to a failure gear position established as a result of a failure of the automatic transmission portion to perform a shifting action following a shifting boundary line map, so that the vehicle can be driven upon the failure of the automatic transmission portion, while preventing an excessive rise of the first electric motor speed. | 03-18-2010 |
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 |
20100125021 | Controller for power transmission system - A controller for a power transmission system that uses an engine and a motor as driving force sources to transmit power and that includes a transmission unit is provided. The transmission unit has a plurality of engagement devices and establishes a plurality of gears having different speed ratios by the frictional engagement devices. The transmission unit is arranged downstream of the driving force sources. The controller includes a torque transmission capacity setting unit that, when the transmission unit shifts gears, varies torque transmission capacities of the frictional engagement devices on the basis of an operating state of the motor and an operating state of the engine. | 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 |
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 |
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 |
20110130934 | Powertrain and method of controlling the same - When a reduction in a supply hydraulic pressure to a second shift portion is sensed, an engagement command of C0 clutch is generated so that a power split device (electrical differential portion) is brought into a locked state. In the locked state, a sun gear, a carrier rotated by an engine and a ring gear rotated by a second MG integrally rotate, whereby inertia is increased. Thus, high-speed rotation of a transmission member corresponding to an input shaft of the second shift portion can be prevented. | 06-02-2011 |
20110212804 | CONTROL DEVICE FOR VEHICLE POWER TRANSMISSION DEVICE - A control device for a vehicle power transmission device includes: an electric differential portion having a differential mechanism that includes a first rotating element, a second rotating element that functions as an input rotating member coupled to an engine, and a third rotating element that functions as an output rotating member, a first electric motor coupled to the first rotating element, and a second electric motor connected to a power transmission path from the third rotating element to drive wheels in a manner enabling power transmission, the electric differential portion controlling a differential state between a rotation speed of the second rotating element and a rotation speed of the third rotating element by controlling an operation state of the first electric motor, the control device executing inertia torque compensation control that drives the first electrode motor to generate a compensation torque for reducing an inertia torque generated in the first electric motor in association with a change in rotation speed of the second electric motor at the time of acceleration of a vehicle, and the inertia torque compensation control being executed at the start of a vehicle. | 09-01-2011 |
20110231048 | POWER TRANSMITTING APPARATUS FOR VEHICLE - It is provided a power transmitting apparatus for a vehicle that is disposed in a power transmission path between an engine and driving wheels and that has an electric differential portion whose differential state between an input rotation speed and an output rotation speed is controlled by controlling a driving state through an electric motor coupled to a rotating element of the differential portion, wherein for varying the output rotation speed of the electric differential portion, at a predetermined time point, an amount of divergence between an actual rotation speed and a target rotation speed of the engine is calculated and the target rotation speed of the engine is set such that the amount of divergence converges at a predetermined slope and the convergence of the amount of divergence is delayed compared to that without any control. | 09-22-2011 |
20120022737 | CONTROL DEVICE FOR VEHICLE POWER TRANSMISSION DEVICE - It is provided a control device for a vehicle power transmission device including a shifting portion and an electric motor that provides regeneration via the shifting portion, the control device executing a downshift of the shifting portion if a traveling loss in the vehicle power transmission device after the shift is smaller than a traveling loss in the vehicle power transmission device at a current gear ratio during regenerative traveling, and the traveling loss in the vehicle power transmission device including at least one of a loss in the shifting portion and a loss in the electric motor, the loss in the shifting portion being calculated based on the operating oil temperature of the shifting portion and the loss in the electric motor being calculated based on the temperature of the electric motor. | 01-26-2012 |
20120077638 | SHIFTING CONTROL APPARATUS FOR VEHICULAR POWER TRANSMITTING SYSTEM - A shifting control apparatus for a power transmitting system of a vehicle provided with a vehicle drive electric motor, and a step-variable automatic transmission constituting a part of a power transmitting path between said vehicle drive electric motor and drive wheels, the shifting control apparatus controls said vehicle drive electric motor to perform a regenerative operation in a coasting state of the vehicle, and controls said automatic transmission to perform a shift-down operation at a predetermined coasting shift-down vehicle speed in the coasting state, the shifting control apparatus is configured: to change said coasting shift-down vehicle speed according to a regenerative power of said vehicle drive electric motor; to control said vehicle drive electric motor in the coasting state of the vehicle, so as to perform the regenerative operation at a vehicle speed higher than a predetermined drive/driven switching vehicle speed value, and so as to generate a vehicle drive torque at a vehicle speed lower than said predetermined drive/driven switching vehicle speed value; and to lower said coasting shift-down vehicle speed value at which the shift-down operation of said automatic transmission to a lowest shift position thereof is performed, and said drive/driven switching vehicle speed value, with an increase of said regenerative power of said vehicle drive electric motor. | 03-29-2012 |
20120077639 | CONTROL DEVICE FOR VEHICULAR DRIVE SYSTEM - A control device for a vehicular drive system is disclosed as including reverse drive for suppression means operative to preclude output member, such as an output shaft and drive wheels, of an automatic transmission portion from inputting a reverse drive force to a differential portion. This prevents a power transmitting member from rotating in a direction opposite to a rotational direction of the same with a running position being set. This suppresses a first electric-motor rotation speed, determined with an engine rotation speed and a power transmitting member rotation speed based on the relationship on mutually relative rotation speeds in the differential portion, from increasing to a high level. This results in improved durability of a first electric-motor. | 03-29-2012 |
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 |
20120323456 | POWER TRANSMITTING APPARATUS - A power transmission apparatus is provided with a control device for starting each of first shift control, which is control associated with shifting of a stepless transmission unit, and second shift control, which is control associated with shifting of a stepped transmission unit, such that shift end timing of the stepless transmission unit is synchronized with shift end timing of the stepped transmission unit, in a condition that shift requests for the stepless transmission unit and the stepped transmission unit are detected in the same timing. According to the power transmitting apparatus, each of the first shift control and the second shift control is started such that the shift end timing of the stepless transmission unit is synchronized with the shift end timing of the stepped transmission unit. | 12-20-2012 |
20130151057 | CONTROL DEVICE FOR A VEHICLE - A control device for a vehicle includes an electric motor disposed in a manner enabling power transmission to wheels; and a clutch device capable of interrupting and connecting a power transmission path between the wheels and the electric motor, if temperature of the electric motor exceeds predetermined temperature defined in advance, the electric motor being rotated after the power transmission path between the wheels and the electric motor is interrupted by the clutch device. | 06-13-2013 |
20130179055 | VEHICLE ENGINE START CONTROL DEVICE - A vehicle engine start control device controls a crank angle such that the crank angle falls within a predetermined crank angle stop range when an engine is automatically stopped, the vehicle engine start control device starting the automatically stopped engine if a predetermined engine start condition is satisfied, the vehicle including an automatic transmission making up a portion of a power transmission path between the engine and drive wheels, and the vehicle engine start control device providing engine rotation resistance control such that rotation resistance of the engine generated due to a change in air pressure in a combustion chamber of the engine is made larger during an automatic stop period of the engine that the engine is automatically stopped and during a change in gear ratio in a shift of the automatic transmission as compared to the time of engine start. | 07-11-2013 |
20130210575 | CONTROL DEVICE OF VEHICLE POWER TRANSMISSION DEVICE - It is provided a control device of a vehicle power transmission device having an automatic transmission shifted by engagement and release of hydraulic friction engagement devices to selectively establish a plurality of gear stages and an electric motor coupled to an input shaft of the automatic transmission in a power transmittable manner, the control device executing a clutch-to-clutch shift while performing regeneration through the electric motor at the time of a coast down shift of the automatic transmission, the control device completing regenerative torque reduction control to reduce a regenerative torque of the electric motor in a torque phase of the coast down shift before start of the torque phase in accordance with a drop-off of an output torque of the vehicle power transmission device. | 08-15-2013 |
20130244831 | CONTROL DEVICE OF VEHICLE POWER TRANSMISSION DEVICE - It is provided a control device of a vehicle power transmission device including a transmission capable of fixing a rotating member with either of engagement of a one-way clutch or engagement of an engagement device, the transmission having a predetermined shift stage formed on condition that at least the rotating member is fixed, if an input torque to the transmission is changed after the engagement of the engagement device, a torque capacity of the engagement device being temporarily reduced without changing the predetermined shift stage, and if a request for applying a driven torque is made during reduction of the torque capacity of the engagement device, the temporarily reduced torque capacity of the engagement device being recovered, and the driven torque being increased depending on a recovery status of the torque capacity. | 09-19-2013 |
20130245875 | CONTROL DEVICE OF VEHICLE DRIVE DEVICE - A control device of a vehicle drive device includes: a hydraulic power transmission device including an input-side rotating element to which power from an engine is input and an output-side rotating element outputting power to drive wheels; a first electric motor directly or indirectly coupled to the input-side rotating element; and a second electric motor directly or indirectly coupled to the drive wheels. | 09-19-2013 |
20130325238 | CONTROL APPARATUS FOR VEHICULAR DRIVE SYSTEM - A control apparatus for a drive system of a vehicle, provided with a transmission, and an electric motor operable to change an operating speed of the engine during the process of shifting of the transmission. The control apparatus controls a discrete change of the operating speed of said engine, with at least one of torques assigned to be respectively generated by said engine and said electric motor in a discrete shifting operation of the transmission mechanism which is performed in response to an operation of an operator of the vehicle and in which the discrete change of the operating speed of said engine takes place, includes a torque assignment determining portion configured to determine a percentage of the torque assigned to said engine in said discrete shifting operation such that the percentage increases with an increase of an amount of change of the operating speed of the engine. | 12-05-2013 |
20140100075 | CONTROL DEVICE FOR VEHICLE DRIVE DEVICE - The control device of a vehicle drive device is configured to have an electric path and a mechanical path, to control an operating point of the engine by adjusting a torque of the first electric motor, to select a transmission path with better power transmission efficiency between a power transmission efficiency in a first transmission path transmitting the power of the engine toward the drive wheels by using both the power transmission via the electric path and the power transmission only via fluid in the hydraulic power transmission device in the mechanical path and a power transmission efficiency in a second transmission path transmitting the power of the engine toward the drive wheels through power transmission when the lockup clutch of the hydraulic power transmission device is driven to perform an engagement or slip operation in the mechanical path. | 04-10-2014 |
20140128217 | CONTROL DEVICE FOR VEHICLE DRIVE DEVICE - A control device of a vehicle drive device comprises a hydraulic power transmission device having an input-side rotating element to which power from an engine is input and an output-side rotating element outputting power to drive wheels, a first electric motor directly or indirectly coupled to the input-side rotating element, and a second electric motor directly or indirectly coupled to the drive wheels, the vehicle drive device further comprising an electric path through which power is electrically transmitted by giving/receiving electric power between the first electric motor and the second electric motor and a mechanical path through which power is mechanically transmitted via the hydraulic power transmission device, the control device of the vehicle drive device being configured to control an operating point of the engine by adjusting a torque of the first electric motor, the control device being configured to adjust the torque of the first electric motor such that a sum of an engine torque and the torque of the first electric motor is balanced with an input-side load torque generated in the input-side rotating element depending on a speed ratio of the hydraulic power transmission device when the operating point of the engine is controlled, the control device being configured to calculate the input-side load torque based on engine rotation speed indicated by the target engine operating point and determine the torque of the first electric motor based on the engine torque indicated by the target engine operating point and the input-side load torque, the vehicle drive device further comprising a capacity variable device varying a characteristic of a capacity coefficient of the hydraulic power transmission device relative to a speed ratio of the hydraulic power transmission device that is a hydraulic characteristic of the hydraulic power transmission device for determining the input-side load torque. | 05-08-2014 |
20140156129 | CONTROL DEVICE FOR VEHICLE DRIVE DEVICE - A control device of a vehicle drive device includes a hydraulic power transmission device having an input-side rotating element to which power from an engine is input and an output-side rotating element outputting power to drive wheels, a first electric motor coupled to the input-side rotating element, and a second electric motor coupled to the drive wheels, the vehicle drive device having an electric path through which power is electrically transmitted between the first electric motor and the second electric motor and a mechanical path through which power is mechanically transmitted via the hydraulic power transmission device, the control device controlling an operating point of the engine by adjusting a torque of the first electric motor, the control device changing a proportion of power transmitted through the electric path and power transmission through the mechanical path based on a request amount when the operating point of the engine is controlled. | 06-05-2014 |
20140179477 | VEHICLE - A vehicle using a first MG, a second MG, and an engine as drive sources includes an electric oil pump, a mechanical oil pump driven by power of the engine, and a hydraulic circuit. The hydraulic circuit includes first oil passages for supplying oil to the first MG, a second oil passage for supplying oil to the second MG, a switch-over valve capable of switching over states of communication of the first oil passage, and a switch control valve that outputs pilot hydraulic pressure to the switch-over valve. States of the switch-over valve are switched over in accordance with hydraulic pressure from the switch control valve and hydraulic pressure from the mechanical pump. | 06-26-2014 |
20140180441 | CONTROL DEVICE OF VEHICLE AND CONTROL METHOD THEREFOR - Provided is a control device of a vehicle, the vehicle having an electric motor and an engine. The control device includes an operating device and a controller. The operating device is configured to be selected a running capability of the vehicle. The controller configured to increase a running capability to be achieved using the electric motor alone, in a case where the vehicle travels using the electric motor alone according to the selected running capability, as compared with a case where the vehicle travels using the electric motor alone and the running capability is not selected. | 06-26-2014 |
20140206500 | CONTROL DEVICE FOR VEHICLE DRIVE DEVICE - A control device of a vehicle drive device includes: a hydraulic power transmission device having a lockup clutch mechanically coupling an input-side rotating member to which power from an engine is input and an output-side rotating member outputting power to drive wheels; and an electric motor coupled to a power transmission path between the hydraulic power transmission device and the drive wheels. If regeneration braking of a vehicle is performed with the electric motor, an engagement force of the lockup clutch is made larger when a vehicle speed related value varying depending on a vehicle speed is higher. | 07-24-2014 |
20140257618 | CONTROL DEVICE FOR VEHICLE - A hybrid vehicle includes a clutch on a power transmission path between a motor generator and a driving wheel. If the vehicle moves backward when the vehicle starts forward acceleration from standstill on an ascending slope, the charging level of the battery that is attributable to power generation by the motor generator due to the backward travel is compared with a current maximum charging power of the battery. If the charging level of the battery is greater, the quantity of slippage of the clutch is controlled according to the excess to lower the rotational speed of the motor generator, hence to lower the power generation. That enables an increase in the torque of the motor generator within the range in which the battery may be charged. Performance is thus improved during acceleration from standstill. | 09-11-2014 |
20140309079 | CONTROL DEVICE FOR VEHICLE DRIVE DEVICE - A control device of a vehicle drive device includes a fluid transmission device having an input-side rotating element to which power from an engine is input and an output-side rotating element outputting power to drive wheels, a first electric motor directly or indirectly coupled to the input-side rotating element, and a second electric motor directly or indirectly coupled to the drive wheels, the control device of a vehicle drive device having an electric path through which power is electrically transmitted by giving/receiving electric power between the first electric motor and the second electric motor and a mechanical path through which power is mechanically transmitted via the fluid transmission device, the control device of a vehicle drive device being configured to control an operating point of the engine by adjusting a torque of the first electric motor, the torque of the first electric motor being adjusted such that a sum of an engine torque and the torque of the first electric motor is balanced with an input-side load torque generated in the input-side rotating element depending on a speed ratio of the fluid transmission device, the input-side load torque being obtained based on an engine rotation speed indicated by a target engine operating point, and the torque of the first electric motor being determined based on the input-side load torque and the engine torque indicated by the target engine operating point, and the control device of a vehicle drive device adjusting a torque of the first electric motor while giving/receiving electric power between the first electric motor and the second electric motor to reduce a speed ratio of the fluid transmission device when a temperature of operating oil for actuating the fluid transmission device is lower as compared to when the temperature is higher. | 10-16-2014 |
20140324263 | CONTROL DEVICE FOR VEHICLE DRIVE DEVICE - A control apparatus for a vehicular drive system is provided with: a fluid-operated power transmitting device having an input rotary member configured to receive a drive force from an engine, an output rotary member from which the drive force is transmitted to drive wheels, and a lock-up clutch configured to mechanically connect the input rotary member and the output rotary member to each other; a first electric motor connected directly or indirectly to said input rotary member; and a second electric motor connected directly or indirectly to a power transmitting path between said fluid-operated power transmitting path and said drive wheels, the control apparatus comprising: a hybrid control portion configured to control said first electric motor and said second electric motor to generate an engine starting torque for starting said engine while a power transmitting path between said second electric motor and said drive wheels is placed in a power cutoff state or a restricted power transmitting state and while said lock-up clutch is given a torque capacity. | 10-30-2014 |
20140342872 | HYBRID VEHICLE POWER TRANSMISSION DEVICE - A power transmission device of a hybrid vehicle comprises: an electric differential portion having a first rotating element coupled to an engine, a second rotating element coupled to a first rotator, and a third rotating element coupled to a second rotator, the second rotator being disposed in a power transmission path including the third rotating element between the engine and drive wheels, the second rotator having a rotor shaft interposed in series in the power transmission path, a rotor of the second rotator being fixed, and making up a portion of the power transmission path. | 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 |
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 |
20150031488 | VEHICLE DRIVE DEVICE - A vehicle drive device comprising: an engine, a first electric motor, and a second electric motor disposed on a first axis; a first axis output portion outputting power of the first axis; a second axis input portion that is an input portion of a second axis to which power from the first axis output portion is input, the second axis being parallel to the first axis; a second axis output portion outputting power of the second axis; a transmission changing speed between the second axis input portion and the second axis output portion, the transmission being disposed on the second axis; and a third axis input portion that is an input portion of a third axis to which power from the second axis output portion is input, the third axis being parallel to the first axis, the first axis output portion, the second axis input portion, the second axis output portion, and the third axis input portion all being disposed between the first electric motor and the second electric motor in a direction of the first axis, the transmission including at least a first planetary gear device and a second planetary gear device, the second axis input portion and the second axis output portion being disposed between the first planetary gear device and the second planetary gear device in a direction of the second axis. | 01-29-2015 |
20150046011 | VEHICLE CONTROL DEVICE - A control device of a vehicle is configured to select motor running by one motor, motor running by two motors, and engine running. A charging capacity of an electric storage device allowing selection of the motor running by two motors is higher than a charging capacity allowing selection of the motor running by one motor. In the motor running by two motors and the engine running, a drive force larger than in the motor running by one motor is generated. When the motor running by one motor is performed with a charging capacity equal to or greater than a first threshold value, and a driver's drive request amount is increased, if the charging capacity is equal to or greater than a second threshold value higher than the first threshold value, the motor running by two motors is selected, while if the charging capacity is less than the second threshold value, the engine running is selected. | 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 |