Patent application number | Description | Published |
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 |
20090023548 | Control device for hybrid vehicle power transmitting apparatus - This invention relates to a control device for a hybrid vehicle power transmitting apparatus. A heat generation control is executed to increase a heat generation amount of an electric motor M | 01-22-2009 |
20090036263 | Control apparatus for hybrid vehicle power transmitting system - A control apparatus for a power transmitting system of a hybrid vehicle including (a) a differential portion which has a differential mechanism operatively connected to an engine and a first electric operatively connected to the differential mechanism, and a differential state of which is controlled by controlling an operating state of the first electric motor, and (b) a differential-state switching device which is incorporated in the differential mechanism and which is operable according to a differential-state switching condition, to switch the differential mechanism between a differential state in which the differential mechanism is operable to perform a differential function and a non-differential state in which the differential mechanism is not operable to perform the differential function, the control apparatus including a differential-state-switching-condition changing portion operable to change a differential-state switching condition for switching the differential-state switching device to switch the differential mechanism between the differential and non-differential states, when a temperature of the power transmitting system is lower than a predetermined threshold value. | 02-05-2009 |
20090093330 | Hybrid vehicle drive system - A drive system of a hybrid vehicle, including an engine, a first electric motor, a second electric motor operatively connected to a drive wheel of the hybrid vehicle, and two planetary gear mechanisms, and wherein the two planetary gear mechanisms have at least four rotary elements arranged to permit the drive system to be placed in a selected one of a first operation mode in which the rotary element connected to the engine and the rotary element connected to the first electric motor are disposed on opposite sides of the rotary element connected to the drive wheel and the second electric motor, as seen in a collinear chart in which the four rotary elements are located at respective four different positions along a base line, and a second operation mode in which the rotary element connected to the first electric motor and the rotary element connected to the drive wheel and the second electric motor are disposed on opposite sides of the rotary element connected to the engine, as seen in said collinear chart. | 04-09-2009 |
20090114464 | Control apparatus for vehicular power transmitting system - A control apparatus for a vehicular power transmitting system including (a) an electrically controlled differential portion operable to distribute an output of a drive power source of a vehicle to a first electric motor and a power transmitting member, (b) a second electric motor connected to a power transmitting path between an output shaft of the drive power source and a drive wheel of the vehicle, (c) a coupling device provided in the electrically controlled differential portion and operable to selectively switch the differential portion between a differential state and a non-differential state, and (d) an electric-energy storage device operable to store and discharge an electric energy supplied from the first or second electric motor, the control apparatus including a torque-receiving-proportion control portion configured to control a proportion of torque values of a reaction torque corresponding to a torque acting on a predetermined member of the electrically controlled differential portion, which torque values are respectively received by the first electric motor and the coupling device, such that a ratio of the torque value received by the coupling device, with respect to the reaction torque, increases with an increase of a difference of an electric energy amount consumed by the second electric motor from an electric energy amount generated by the first electric motor. | 05-07-2009 |
20090209382 | Control apparatus of vehicle drive apparatus - In one embodiment, when a switching clutch or a switching brake is engaged and thus a differential of a differential unit is limited, the gear ratio of a continuously variable transmission unit is adjusted. On the other hand, when the switching clutch and the switching brake are both released and thus the differential of the differential unit is not limited, an overall gear ratio obtained from the gear ratio of the differential unit and the gear ratio of the continuously variable transmission unit is adjusted. | 08-20-2009 |
20090258747 | Control apparatus for vehicular drive system - A vehicular power transmitting system including a transmission portion constituting a part of a power transmitting path, an electric motor connected to the power transmitting path, an electrically controlled differential portion connected to the electric motor and having a differential state controllable according to a change of an operating speed of the electric motor, a casing accommodating the transmission portion, the electric motor and the electrically controlled differential portion, and a support member for supporting a rotor of the electric motor, the support member including a support portion formed in one axial end portion thereof, at which the rotor is supported rotatably about its axis, and a tapered portion having a diameter increasing in an axial direction from the one axial end portion toward the other axial end portion at which the support member is fixed to the casing, and wherein a winding portion of a stator of the electric motor is disposed in a space formed radially outwardly of the tapered portion, while a fluid passage portion for supplying a working fluid to frictional coupling devices of the transmission portion is disposed in a space formed radially inwardly of the tapered portion. | 10-15-2009 |
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 |
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 |
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 |
20110251747 | CONTROL APPARATUS FOR VEHICULAR POWER TRANSMITTING SYSTEM - Providing a control apparatus for a vehicular power transmitting system, which permits the power transmitting system to provide a sufficient vehicle drive force even when an input of an electric energy into an electric-energy storage device is restricted. | 10-13-2011 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |