Abstract: A one-way clutch includes a first rotational member, a second rotational member, and a first rotational body. The second rotational member has plural first through holes in which bolts are inserted. A dimension of the first through hole in a circumferential direction is larger than a dimension of the first through hole in a radial direction. A first region and a second region are obtained by dividing the first through hole into two regions in the circumferential direction. The first region is located ahead of the second region in a rotatable direction of the second rotational member. The bolts are inserted such that the each of the bolts is located in the first region of the first through hole, and the second rotational member and the first rotational body are fastened by the bolts.

Abstract: An intermesh engagement device includes an intermesh engagement mechanism, a moving member, an actuator configured to apply a thrust to a moving member in an engaging direction, a transmission spring configured to transmit the thrust of the actuator from the moving member to a sleeve, a return spring, a stopper, and an electronic control unit configured to control the actuator. The electronic control unit is configured to execute first control for setting the thrust of the actuator to a thrust in a first region, and, when a halfway stopped state has occurred through the first control, execute second control for setting a thrust larger than the thrust in the first control. The first region is a range in which the thrust is larger than an urging force of the return spring and is smaller than the sum of the urging force of the return spring and a maximum urging force of the transmission spring.

Abstract: A control system for a hybrid vehicle configured to promptly shift a drive mode. In the single-motor mode, the vehicle is powered by a second motor while bringing an engagement device into disengagement and stopping the engine. In the dual-motor mode, the vehicle is powered by both a first motor and the second motor while bringing the engagement device into engagement and stopping a rotation of the output shaft of the engine by a stopper device. When shifting the drive mode from the single-motor mode to the dual-motor mode, the control system controls the first motor in a manner such that a speed difference between an input speed and an output speed of the engagement device is reduced while increasing a torque transmitting capacity of the engagement device.

Abstract: A drive system is configured to split driving force produced by an engine to a first motor side and an output gear side, and add driving force produced by a second motor that is driven with electric power generated by the first motor, to the driving force delivered from the output gear. A first planetary gear mechanism performs differential operation, using a first input element that receives the driving force produced by the engine, a first reaction-force element coupled to the first motor, and a first output element. A second planetary gear mechanism performs differential operation, using a second input element coupled to the first output element, a second output element coupled to the output gear, and a second reaction-force element. A first clutch mechanism selectively couples the first input element with the second reaction-force element. A first brake mechanism selectively inhibits rotation of the second reaction-force element.

Abstract: Since one end of a spring is received by a planar portion of a spring seat provided on any one of an outer plate and an inner plate, it is possible to support the spring with a planar member without machining a bottom wall face of the outer plate into a planar shape. Since the spring seat has seat guide portions that contact the outer plate, it is possible to suppress the fluctuation of the spring seat and the fluctuation of the spring by the seat guide portions, so it is possible to reliably prevent interference of the spring with its peripheral portion. Therefore, a load on the spring is reduced, so it is possible to improve the durability of a one-way clutch.

Abstract: A power transmission device for a hybrid vehicle includes: a power distribution mechanism including a plurality of rotation components; a friction engagement device which is interposed between the engine and the rotation component connected to the engine; and a control device which performs a stop control for the engine and a release control for the friction engagement device so as to cause the vehicle to travel only by the power of the second rotary machine and performs an engagement control for the friction engagement device while the vehicle travels only by the power of the second rotary machine so as to perform a push-start of the engine, and the control device controls the first rotary machine so that the friction engagement device is maintained in a half engagement state at a differential rotation speed higher than a predetermined rotation speed during the push-start of the engine.

Abstract: A control system for hybrid vehicle for extending a possible travelling distance of the vehicle in the event of clutch failure is provided. The control system is configured to select a first drive mode in which the vehicle is powered by an engine in case an estimated torque transmitting capacity of the clutch in trouble is larger than a first threshold value, and to select a second drive mode in which the vehicle is powered by a motor in case the estimated torque transmitting capacity of the clutch in trouble is smaller than the first threshold value. The control system is further configured to reduce an engine torque to be smaller than the estimated torque transmitting capacity of the clutch in case the first drive mode is selected.

Abstract: A control system for a hybrid vehicle to start an engine without causing a torque drop is provided. A combined planetary gear unit is configured in such a manner that an input element connected to the engine and an output element are situated between a reaction element connected to a first motor and a fixed element connected to a brake in a nomographic diagram. The first motor is selectively connected to the engine by a clutch. A controller is configured to start the engine by the first motor while engaging the brake to restrict rotation of the fixed element and engaging the clutch.

Abstract: A vehicle control system is provided to reduce a change in drive force and to start an engine without delay when starting the engine by a motor during running. The control system is applied to a hybrid vehicle having an internal combustion engine and two motors supplied electric power from a battery. The control system comprises a determination means that determines a fact that a state of charge of the battery is lower than a first threshold, during propelling the vehicle by the two motors by supplying the electric power from the battery while stopping the engine (at step S2); and a drive force restriction means that restricts a total drive force of said two motors for propelling the vehicle to an allowable limit which is lower than a theoretical maximum drive force of said two motors, given that the state of charge of the battery is lower than a first threshold (at step S3).

Abstract: A vehicle control system is provided to ensure acceleration response while improving energy efficiency in an autonomous vehicle in which an operating mode is selected from an autonomous mode and a manual mode. A switching device is disposed between a motor and drive wheels to switch a driving mode between a direct drive mode and a differential drive mode. A controller executes a motor-idling control to keep a speed of the motor to a standby speed during propulsion in a motor-standby mode. The controller is configured to select a first standby speed of a motor idling control in a case that the vehicle is propelled in the manual mode, and to select a second standby speed that is lower than the first standby speed in a case that the vehicle is propelled in the autonomous mode.

Abstract: A control device of a vehicle including an engine, an electric motor directly or indirectly coupled to the engine, and an engagement device non-rotatably fixing the engine, the vehicle further including an electric circuit controlling giving/receiving of electric power related to operation of the electric motor and having an electric storage member temporarily storing the electric power, if the vehicle is damaged, or if a damage of the vehicle is predicted, during rotating operation of the engine, a rotation speed of the engine being reduced by an engagement actuation of the engagement device, and after the rotation speed of the engine is reduced to be equal to or less than a predetermined rotation speed, electric power stored in the electric storage member being discharged by the electric circuit and the electric motor.

Abstract: A hybrid vehicle capable of selecting between a state where a clutch coupling an engine and a motor is engaged and the vehicle travels by drive power of the engine, and a state where the clutch is released and the vehicle travels with the engine stopped, wherein, if there is a request to restart the engine while the engine is rotating after control to release the clutch and stop the engine has been started, then upon the condition that the engine number of revolutions is equal to or greater than a predetermined threshold value, and in a state where the output torque of the motor is limited to a previously established torque or less, control to increase the transmission torque capacity of the clutch is implemented, whereupon the output torque of the motor is increased to a torque that cranks the engine.

Abstract: A drive control system includes a power split mechanism, a brake mechanism, a first motor, an output member, a second motor and an electronic control unit. The electronic control unit is configured to; obtain at least one of a first time that is a duration of a motor driven state or a second time that is a duration of a state where the motor driven state is ended, estimate a temperature of the power split mechanism based on at least one of the first time or the second time, and allow or inhibit the motor driven state in accordance with a temperature of the power split mechanism, the first time, or the second time.

Abstract: A drive control device includes: a meshing engagement unit; an engine; a rotary machine; a detector detecting a predetermined parameter; and a controller configured to perform a release control of causing the rotary machine to output a second rotation torque in a direction opposite to a first rotation torque applied from the engine to the engagement unit at a time the engagement unit is released. The release control includes setting a magnitude of the second rotation torque to a predetermined value larger than a magnitude of the first rotation torque at a time the predetermined parameter change degree is not smaller than a threshold value and gradually decreasing the magnitude of the second rotation torque, and setting the magnitude of the second rotation torque to a magnitude smaller than the predetermined value at a time the predetermined parameter change degree is smaller than the threshold value.

Abstract: A drive control system is for a hybrid vehicle. The drive control system includes a power split mechanism, a brake mechanism, a first motor, an output member, a second motor and an electronic control unit. The electronic control unit is configured to obtain a temperature of the power split mechanism based on a first time that is a duration of a motor driven state, allow the motor driven state when the obtained temperature obtained by the electronic control unit is lower than a predetermined upper limit temperature, and inhibit the motor driven state when the obtained temperature is higher than or equal to the upper limit temperature.

Abstract: an electronic control unit configured to i) while the engagement mechanism is changing from the engaged state to the released state, execute shaking control, ii) execute torque oscillation control, iii) determine whether to execute any one of releasing control and the torque oscillation control while the other one of the releasing control and the torque oscillation control is being executed, and iv) stop the shaking control when the electronic control unit determines to execute the releasing control and the torque oscillation control.

Abstract: A drive unit for a hybrid vehicle in which selectable operating modes are increased and power distribution ratio is changeable is provided. The drive unit comprises: a first planetary gear unit having a first input element to which power of an engine is applied, a first reaction element connected to a first motor, and a first output element; a second planetary gear unit that performs having a second input element connected to the first output element, a second output element connected to an output member, and a second reaction element; a first clutch that selectively connects any of the first input element and the first reaction element to the second reaction element; and a second clutch that selectively connects at least any of two elements of the second planetary gear unit to rotate the second planetary gear unit integrally.

Abstract: A vehicle driving control device for a vehicle includes a control unit configured to stop operation of an electric motor driving device driving an electric motor at a time a rotary element is fixed to be unable to rotate by an engagement by an engaging mechanism, and to recover the operation of the electric motor driving device at a time a predetermined condition based on a parameter relating to a driving of the vehicle is satisfied before releasing the engagement by the engaging mechanism.

Abstract: An installation structure of a one-way clutch in which torque transmission is limited to one direction includes a flywheel, first and second rotary structures, housing and stopper plates, and a rivet. The first rotary structure is arranged coaxially with the flywheel while connected to an engine block. The second rotary structure is arranged coaxially with the first rotary structure while connected to the flywheel. The housing plate is disposed between the flywheel and the first and second rotary structures and arranged coaxially while connected to the second rotary structure. The stopper plate is attached to the second rotary structure to hold first rotary structure with the housing plate. The rivet fastens the stopper plate, the second rotary structure, and the housing plate. A first clearance between one face of the flywheel and a top face of a head of the rivet is narrower than a thickness of the stopper plate.

Abstract: A vehicle includes an engine, a rotary machine, at least one driving wheel, a first clutch disposed between a power transmission path and the rotary machine, the power transmission path being defined between the engine and the driving wheel, the first clutch being switched to an engaged state or a disengaged state, a one-way clutch disposed in parallel with the first clutch, an oil temperature detector configured to detect a temperature of oil supplied to a power transmission part including the rotary machine, and an electronic control unit. The electronic control unit is configured to limit an operating zone in which a predetermined traveling mode is allowed when the oil temperature detected by the oil temperature detector is low compared to when the oil temperature is high, where the predetermined traveling mode is a traveling mode in which the vehicle travels with the rotation of the rotary machine being stopped.