| 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 |
| 20080200301 | Hydraulic pressure control device of an automatic transmission and hybrid drive device having the hydraulic pressure control device - A hydraulic control apparatus for an automatic transmission includes a forward travel engaging element, a reverse travel engaging element, a first signal electromagnetic valve, a first switching valve, and a second switching valve. The hydraulic control apparatus is structured so as to change the output state of the signal pressure of the first signal electromagnetic valve when changing from the reverse travel shift position and/or shift range to the non-travel shift position and/or shift range and when changing from the forward travel shift position and/or shift range to the non-travel shift position and/or shift range, and to enable quick draining of hydraulic pressure of the hydraulic servo of the reverse travel engaging element and hydraulic pressure of the hydraulic servo of the forward travel engaging element. | 08-21-2008 |
| 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 |
| 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 “D” position is switched into an “N” 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
