Abstract: A release mechanism includes a clutch, a bearing, a hydraulic actuator, and a return spring. The clutch transmits a torque between an input-side rotational member and an output-side rotational member by pressing the pressure plate against a clutch disc by an elastic force of a diaphragm spring. The bearing transmits a load in a direction in which a pressure plate is separated from the clutch disc. The bearing is placed on an outer peripheral side of the hydraulic actuator in a radial direction of the output-side rotational member. The hydraulic actuator transmits, to the bearing, a load to separate the pressure plate from the clutch disc. The return spring, the hydraulic actuator, and the bearing are placed so as to overlap with each other in an axis direction of the output-side rotational member. The return spring is placed on an outer peripheral side of the bearing.

Abstract: At the time of changing from an EV mode, in which a hybrid vehicle travels with the use of a second motor provided on an output side of a differential mechanism while torque that acts on any one of rotating elements of the differential mechanism is interrupted by a clutch, to an HV mode, in which the hybrid vehicle travels while transmitting output torque of an engine to a drive wheel, when the engine is started in a state where the clutch is slipped and torque is transmitted from the engine so as to increase the rotation speed of the first rotating element while the clutch is slipped, torque starts being output from a first motor such that torque input from the first rotating element to the differential mechanism to increase the rotation speed of the drive wheel is output from the third rotating element.

Abstract: A control system of a hybrid vehicle, in which a driving power source for travel includes an engine that is started by cranking, a motor that can control a torque, and a clutch that is coupled with the motor and in which a transmission torque capacity continuously changes depending on a change of a control amount is configured to estimate a torque of the clutch based on the torque that the motor outputs, and change rates of the rotational speed of the motor and the clutch caused by changing the control amount, when the torque that the motor outputs is transmitted by the clutch that is in a slip state by changing the control amount.

Abstract: A power transmission unit for preventing malfunction and deterioration in durability of a locking device arranged in a housing by preventing the ingress of foreign matters into the locking device. In the power transmission unit, a one-way brake 10 for selectively stopping a rotation of an output shaft 1a of an engine 1 is disposed between the housing 11 of a transmission mechanism and an engine block 1b. A fixed member 10a is fixed to the housing 11 or to the engine block 1b, and a movable member 10b is attached to the output shaft 1a. A through hole 21 is formed on the housing at a vertically lowest portion and axially outside of a region where the one-way brake 10 is situated, so as to provide a communication between an inner space and an outer space of the housing 11.

Abstract: A hybrid vehicle drive unit including a first planetary gear mechanism; a second planetary gear mechanism; a clutch; and a brake, wherein a first sun gear that is a sun gear of the first planetary gear mechanism is connected to a first rotating electric machine, a first ring gear that is a ring gear of the first planetary gear mechanism is connected to an engine, and a first carrier that is a carrier of the first planetary gear mechanism is connected to a second rotating element of the second planetary gear mechanism and to driving wheels, a first rotating element of the second planetary gear mechanism is connected to the engine and the first ring gear via the clutch, and a third rotating element is connected to a second rotating electric machine, the first rotating element is a sun gear of the second planetary gear mechanism, and the brake regulates a rotation of the first rotating element.

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 system for preventing damage from a power distribution device under a motor mode and for improving fuel efficiency. A time duration from termination of the first operating mode where a torque of the first motor is applied to the power distribution device while halting a carrier (at step S4), and a temperature of the power distribution device is estimated based on the calculated time duration (at step S13). The first operating mode is enabled if the estimated temperature is lower than a predetermined allowable temperature (at step S15), and inhibited if the estimated temperature is higher than the allowable temperature (at step S10).

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: A vehicle control system to prevent deterioration in controllability of the engagement device resulting from temporal deterioration of the engagement device. The vehicle control system is configured to switch a driving mode selectively between a first driving mode in which the engagement device is disengaged, and a second driving mode in which the engagement device is engaged. The vehicle control system comprises: an estimation means that estimates deterioration in an engagement property of the engagement device; and an engagement means that engages the engagement device after achieving synchronization between an input speed and an output speed, in case the estimation means estimates that the engagement property of the engagement device is deteriorated, and the driving mode is shifted from the first driving mode to the second driving mode.

Abstract: A first rotating machine and a second rotating machine are provided. Total torque of a torque command value of the first rotating machine and a torque command value of the second rotating machine is set higher than requested torque for a vehicle when transition from a first travel mode, in which one of the first rotating machine and the second rotating machine is used as a power source, to a second travel mode, in which the first rotating machine and the second rotating machine are used as the power sources, is made. The torque command value of the rotating machine, which is used as the power source in the first travel mode, during the transition from the first travel mode to the second travel mode may be set higher than the torque command value before beginning of the transition.

Abstract: A hybrid vehicle driving device includes a first planetary gear mechanism, a second planetary gear mechanism, and a clutch, wherein a sun gear of the first planetary gear mechanism is connected to a first electric rotating machine, a carrier of the first planetary gear mechanism is connected to a driving wheel, a ring gear of the first planetary gear mechanism is connected to an engine, a sun gear of the second planetary gear mechanism is connected to a second electric rotating machine, the carrier of the second planetary gear mechanism is connected to the ring gear of the first planetary gear mechanism and the engine through the clutch, and a ring gear of the second planetary gear mechanism is connected to the driving wheel.

Abstract: A first rotating machine and a second rotating machine, a first travel mode, in which one rotating machine of the first rotating machine and the second rotating machine is used as a power source, and a second travel mode, in which the first rotating machine and the second rotating machine are used as the power sources, are provided. Regarding at least one rotating machine of the first rotating machine and the second rotating machine, when transition from one of the first travel mode and the second travel mode to the other is made, a degree of change in a torque command value for said rotating machine is higher in the case where said rotating machine newly becomes the power source in a travel mode after transition than in the case where said rotating machine is used as the power source in a travel mode before transition.

Abstract: Provided is a control system of a vehicle equipped with first and second motors/generators, and a differential device including a ring gear and a sun gear individually connected to the first and second motors/generators and a carrier connected to a driving wheel side, wherein at the time an SOC of a battery exceeds a predetermined threshold value during regenerative driving operations of the first and second motors/generators, a power driving operation of any one of the first and second motors/generators is selectively performed.

Abstract: In a release mechanism for a friction clutch that includes a cylinder portion formed by an inner body and an outer body, a piston that moves in a front-back direction in accordance with a fluid pressure supplied to the cylinder portion, and a plate that is formed on the piston and receives an elastic force from elastic members provided on an outer peripheral side of the cylinder portion in a circumferential direction at a predetermined interval, a fastening member that fixes flanges of the inner body and the outer body so as to clamp a sealing member therebetween in an axial direction is provided, and a region in the radial direction in which the fastening member is arranged and a region in the radial direction in which the elastic members are arranged overlap each other at least in part, in the flanges.

Abstract: A hybrid vehicle driving device includes a first planetary gear mechanism, a second planetary gear mechanism, and a clutch, wherein a sun gear of the first planetary gear mechanism is connected to a first electric rotating machine, a carrier of the first planetary gear mechanism is connected to a driving wheel, a ring gear of the first planetary gear mechanism is connected to an engine, a sun gear of the second planetary gear mechanism is connected to a second electric rotating machine, the carrier of the second planetary gear mechanism is connected to the ring gear of the first planetary gear mechanism and the engine through the clutch, and a ring gear of the second planetary gear mechanism is connected to the driving wheel.

Abstract: A vehicular transmission includes a transmission input shaft to which engine torque is input, first and second differential mechanisms as transmission mechanisms to which the engine torque is input through the transmission input shaft, a torque limiter arranged between the transmission input shaft and an engine configured to enable torque transmission between the transmission input shaft and an engine output shaft and inhibit an input of excessive torque larger than predetermined torque between the transmission input shaft and the engine output shaft, and a one-way clutch arranged between the torque limiter and the engine for prohibiting reverse rotation of the engine while allowing normal rotation of the engine.

Abstract: In a magnetic disk glass substrate manufacturing method, a main surface of a glass substrate is polished using a polishing liquid containing colloidal silica abrasive particles as polishing abrasive particles and a surface plate with a polishing pad, then the glass substrate is brought into contact with a liquid containing a coagulant so that the colloidal silica abrasive particles are coagulated, and then the colloidal silica abrasive particles coagulated are removed.

Abstract: A power transmission device includes: a planetary gear mechanism; a first rotary machine connected to a sun gear of the planetary gear mechanism; an engine and a one-way clutch that are connected to a carrier of the planetary gear mechanism; a second rotary machine and a drive wheel that are connected to a ring gear of the planetary gear mechanism; and a parking device connected to the ring gear. The power transmission device is configured to positively rotate the first rotary machine at a time a command to disengage the parking device is received and thereafter disengage the parking device, and a direction of the positive rotation is a rotational direction of the carrier rotary-driven by the engine.

Abstract: A drive device for hybrid vehicle includes: a planetary gear mechanism; a first rotating machine coupled to a sun gear of the planetary gear mechanism; an engine and a one-way clutch coupled to a carrier of the planetary gear mechanism; a second rotating machine and a drive wheel coupled to a ring gear of the planetary gear mechanism; and a braking device. The drive device relatively changes a rotation speed of the first rotating machine to a rotation speed of a positive rotation side to perform braking by the braking device in response to a braking command.

Abstract: A vehicle control system is provided to improve a response of shifting operation of a drive mode while avoiding a shortage of drive force. The control system is applied to a hybrid vehicle having an internal combustion engine and two motors, and configured to select a drive mode from a mode where the vehicle is powered by the engine and a mode where the vehicle is powered by at least one of the motors while stopping the engine. The control system predicts a fact that the engine is expected to be started based on a detection value representing a running condition of the vehicle, during propulsion of the vehicle by the two motors while stopping the engine; shifts a drive mode to a mode where the vehicle is powered by one of the motors without using a power of the other motor to be used to start the engine; and starts the engine upon satisfaction of a condition for propelling the vehicle by the power of the other motor.