Abstract: A hydraulic control device configured with a source pressure generation section, a hydraulic servo for a clutch provided between an engine and a motor, a control solenoid valve that outputs a regulated source pressure to the hydraulic servo, and a switching section that switches a hydraulic passage, which extends between the source pressure generation section and the hydraulic servo to supply the engagement pressure, between a first and second state in which the hydraulic passage has a high conduit resistance compared to the first state at least until the clutch is engaged. The switching section switches the hydraulic passage into the second state during a failure in which the control solenoid valve is de-energized and the source pressure is directly supplied to the hydraulic servo as the engagement pressure, and switches the hydraulic passage into the first state during normal times when the failure does not occur.

Abstract: A vehicle driving apparatus includes a rotating electrical machine and an engagement device, which are disposed on a power transmission path linking an input member drive-coupled to an internal combustion engine and an output member drive-coupled to a wheel. The engagement device includes an engagement input coupled to the input member, an engagement output that forms a pair with the engagement input and is coupled to the rotating electrical machine, a friction member disposed between the engagement input and the engagement output, and a pressing member that presses the friction member in a pressing direction. An oil pressure chamber is formed between the pressing member and either the engagement input or the engagement output. A biasing spring biases the pressing member in the pressing direction when no oil pressure is supplied to the oil pressure chamber and is disposed on an exterior of the oil pressure chamber.

Abstract: It is provided a control device of a hybrid vehicle having a clutch in a power transmission path between an engine and a motor generator, the clutch controlling power transmission through the power transmission path depending on an engagement state, the hybrid vehicle interrupting the power transmission through the power transmission path by releasing the clutch during EV running while only the motor generator is used as a drive source for running, during the EV running while a release instruction for the clutch is output, if the engine being driven, a rotation speed of the engine is maintained within a predetermined rotation speed difference from a rotation speed of the motor generator.

Abstract: It is provided a vehicle power transmission device having a hydraulic power transmission device and a power transmission mechanism, the hydraulic power transmission device including an input-side rotating member that houses an output-side rotating member disposed with turbine blades and fluid flowing from pump blades to turbine blades, the vehicle power transmission device having an engine intermittent clutch and a lockup clutch disposed closer to an engine relative to the turbine blades in the input-side rotating member, one of the engine intermittent clutch and the lockup clutch being a single plate clutch, the vehicle power transmission device further comprising an electric motor, and the hydraulic power transmission device including a first damper inserted in a power transmission path between the crankshaft of the engine and the electric motor, and a second damper inserted in a power transmission path between the first damper and the output-side rotating member.

Abstract: In a case of engagement when a clutch K0 disposed between an engine 12 and a motor generator MG is engaged during EV running while a release instruction for the clutch K0 is output, drive of the engine 12 is changed such that a rotation speed NE of the engine 12 approaches a rotation speed NMG of the motor generator MG and, therefore, a drag torque of the engine 12 can be suppressed regardless of an engagement state of the clutch K0, and generation of longitudinal acceleration can be suppressed by reducing a slip time of the clutch K0. Therefore, a control device of a hybrid vehicle 10 can be provided that reduces a driver's uncomfortable feeling in a simplified manner in a case of wrong engagement of the clutch K0.

Abstract: A vehicle running control device in a vehicle includes a power connecting/disconnecting device interrupting power transmission between an engine and drive wheels, the vehicle running control device providing free-run control of interrupting the power transmission with the power connecting/disconnecting device and stopping the engine during inertia running, the vehicle running control device being configured to determine a target vehicle deceleration at the start of the free-run control based on a vehicle speed and to estimate an estimated vehicle deceleration when the free-run control is started, before starting the free-run control, and when the estimated vehicle deceleration is closer to the target vehicle deceleration at the start of the free-run control, the free-run control being more easily provided.

Abstract: A rotary electric drive device for a vehicle configured to couple a combustion engine to a wheel. The drive device includes an engagement device selectively drivingly connecting the input member with the rotary electric machine and a fluid coupling. The engagement device includes a differential pressure generating chamber that receives oil supply so as to apply hydraulic pressure to a side of the pressing member opposite to a side to which hydraulic pressure for operation is applied. A body portion housing chamber housing a body portion of the fluid coupling and the differential pressure generating chamber are structured as oil chambers independent of each other. The drive device includes a coupling supply oil passage supplying oil to the body portion housing chamber and a differential pressure supply oil passage supplying the oil to the differential pressure generating chamber.

Abstract: A vehicle power transmission device has a torque converter including an input-side rotating member, an output-side rotating member, a stator and a case including a first chamber and a second chamber separated by a bulkhead, and the first chamber and the second chamber being oil-tightly isolated from each other by an oil seal. The vehicle power transmission device is disposed with a thrust bearing between the input-side rotating member and the stator, which is disposed to partially or entirely overlap with the oil seal and a one way clutch disposed between the stator and a non-rotating member which supports the stator. A portion of the one way clutch protrudes toward the second chamber, the input-side rotating member having an annular projecting portion, and the annular projecting portion houses the thrust bearing and the portion of the one way clutch.

Abstract: It is provided a vehicle power transmission device having a torque converter and a power transmission mechanism in a power transmission path between an engine and drive wheels, the torque converter including an input-side rotating member disposed with a plurality of pump blades, an output-side rotating member disposed with a plurality of turbine blades receiving a fluid flow from the pump blades, and a stator disposed with a stator blade disposed between the pump blades and the turbine blades, the power transmission mechanism transmitting power input to an input shaft from the torque converter to a subsequent stage, within a circulation flow passage allowing circulation of fluid in the torque converter, a circulation outward passage allowing the fluid to flow toward the inside of the torque converter at the time of the circulation being made up of a gap between the input shaft of the power transmission mechanism and a tubular stator shaft coupled via a one way clutch to the stator, and the stator shaft being

Abstract: A vehicle driving apparatus includes a rotating electrical machine and an engagement device, which are disposed on a power transmission path linking an input member drive-coupled to an internal combustion engine and an output member drive-coupled to a wheel. The engagement device includes an engagement input coupled to the input member, an engagement output that forms a pair with the engagement input and is coupled to the rotating electrical machine, a friction member disposed between the engagement input and the engagement output, and a pressing member that presses the friction member in a pressing direction. An oil pressure chamber is formed between the pressing member and either the engagement input or the engagement output. A biasing spring biases the pressing member in the pressing direction when no oil pressure is supplied to the oil pressure chamber and is disposed on an exterior of the oil pressure chamber.

Abstract: A power transmission device has a rigid body that includes a contact portion coming into contact with the first or second friction member and that moves the contact portion from a position of contact with the first or second friction member to a position of no contact with the first and second friction members, an elastic body that applies to the rigid body a force moving the contact portion to a position of contact with the first or second friction member, a first pushing mechanism that applies to the rigid body a pressure of liquid moving the contact portion to a position of contact with the first or second friction member, and a second pushing mechanism that applies to the rigid body a pressure of liquid moving the contact portion to a position of no contact with the first and second friction members.

Abstract: Mutual interference between a hydraulic pressure of a first engagement device and a hydraulic pressure of a second engagement device is suppressed even in the case where operation of the first engagement device and operation of the second engagement device coincide with each other. A vehicle drive device includes a first engagement device that selectively couples a rotary electric machine to an internal combustion engine, and a fluid coupling. The first engagement device includes a first oil chamber that is formed to apply a back pressure to a first piston. The fluid coupling includes a second oil chamber configured to control an engagement state of a second engagement device. The vehicle drive device includes a first control valve that controls a first oil chamber hydraulic pressure, and a second control valve that controls a second oil chamber hydraulic pressure independently of the first oil chamber hydraulic pressure.

Abstract: Providing a vehicle power transmission device including a hydraulic power transmission device and enabling a shorter entire axial length. A vehicle power transmission device 12 includes a torque converter 18 having a rear cover 38 disposed with a plurality of pump blades 40 and a turbine 42 disposed with a plurality of turbine blades 44 receiving a fluid flow from the pump blades 40, and an automatic transmission 20 transmitting power input to an input shaft 48 from the torque converter 18 to a subsequent stage, in a power transmission path between an engine 14 and drive wheels 16. The turbine 42 is coupled by relatively non-rotatable spline fitting to the input shaft 48 at a position closer to the automatic transmission 20 than the pump blades 40 and the turbine blades 44 in a first axial center C1 direction of the torque converter 18, i.e., at a position closer to the automatic transmission 20 than an outer shell cover of the torque converter 18.

Abstract: A hybrid drive apparatus includes an input member that is drivingly connected to a rotary electric machine and drivingly connected via an input clutch to an internal combustion engine, an output member that is drivingly connected to the input member and transmits rotation of the input member to wheels, and a control device that controls the rotary electric machine. The control device is capable of performing valve opening/closing phase control that advances or retards opening/closing phases of valve elements provided in the internal combustion engine via a valve opening/closing phase adjusting mechanism and, with the internal combustion engine in a stopped state before starting a vehicle, advances the opening/closing phases of the valve elements to bring the opening/closing phases of the valve elements into an advanced phase state relative to predetermined reference phases, thus starting the vehicle with torque of the rotary electric machine in the advanced phase state.

Abstract: A vehicle drive device includes an input member coupled to an internal combustion engine; an output member coupled to a wheel; a rotating electrical machine; a fluid coupling; and a case containing at least the rotating electrical machine and the fluid coupling. The fluid coupling includes an input and an output that is paired with the input. The rotating electrical machine includes a rotor and a rotor support that extends radially inward from the rotor in an axial direction with respect to the coupling input, and supports the rotor via a support bearing. A power transmission member is formed by coupling at least the rotor support and the coupling input together so that at least the rotor support and the coupling input rotate together. A movement restricting mechanism restricts axial movement of the power transmission member toward the axial direction.

Abstract: A vehicle drive device, having a case with a support wall that extends at least radially, and an axially protruding portion that is cylindrically shaped integrally with the support wall and protrudes axially from the support wall toward a rotating electrical machine. A rotor support member is supported radially and axially so as to be rotatable with respect to the axially protruding portion via a support bearing provided on an outer or inner peripheral surface of the axially protruding portion. The element to be supplied with the oil pressure is positioned on a side axially opposite to the support wall. The vehicle drive device includes a supply oil passage, which is provided inside the support wall and the axially protruding portion, and has an end face opening that is formed in an end face located in a protruding direction of the axially protruding portion.

Abstract: A vehicle power transmission device having a torque converter in a power transmission path between an engine and drive wheels, the torque converter including an input-side rotating member disposed with a plurality of pump blades, an output-side rotating member disposed with a plurality of turbine blades receiving a fluid flow from the pump blades, and a stator disposed with a stator blade disposed between the pump blades and the turbine blades, the vehicle power transmission device includes: a case including a first chamber and a second chamber separated by a bulkhead disposed on an opposite side of the torque converter to the engine, the first chamber housing the torque converter, the second chamber being formed on an opposite side of the bulkhead to the torque converter, the first chamber and the second chamber being oil-tightly isolated from each other by an oil seal oil-tightly sealing a gap between an inner circumferential surface of the bulkhead and an outer circumferential surface of a cylindrical rota

Abstract: A control device of a vehicle engine comprises: an electric motor rotationally driving an engine to start the engine; a variable valve timing mechanism varying a valve timing of an intake valve of the engine; and an intermediate lock mechanism mechanically locking the valve timing at an intermediate position between a most delayed position and a most advanced position of the valve timing, if an output limitation of the electric motor is predicted at restart of the engine, the valve timing at the time of stop of the engine being locked at the intermediate lock position by the intermediate lock mechanism.

Abstract: A vehicle drive control device performs acceleration/deceleration running by alternately repeating acceleration running and deceleration running, wherein it compares between an efficiency of the motor at a first operation point determined by a rotation speed and a torque of a motor and an efficiency of the motor at a second operation point for outputting a higher torque than the first operation point, and if a difference between the efficiencies is greater than a determination value, the acceleration running at the second operation point and the deceleration running being repeated, the second operation point being set a maximum efficiency line of the motor with the rotation speed and the torque of the motor as parameters to perform the acceleration running, and if acceleration during the acceleration running becomes larger than an acceleration limit value, a rotating machine acting at least as an electric generator generating electricity to charge a battery.

Abstract: A vehicle running control device in a vehicle includes a power connecting/disconnecting device interrupting power transmission between an engine and drive wheels, the vehicle running control device providing free-run control of interrupting the power transmission with the power connecting/disconnecting device and stopping the engine during inertia running, the vehicle running control device being configured to determine a target vehicle deceleration at the start of the free-run control based on a vehicle speed and to estimate an estimated vehicle deceleration when the free-run control is started, before starting the free-run control, and when the estimated vehicle deceleration is closer to the target vehicle deceleration at the start of the free-run control, the free-run control being more easily provided.