An actuator capable of preventing the inside of a cylinder from being scratched is provided. A two-way piston includes a cylinder having an opening, a piston, and a stroke sensor that detects a position of the piston. The stroke sensor includes a stay that extends from a portion exposed from the opening of the piston to the outside of the cylinder, a member to be detected that is attached to the stay, and a sensor that detects a position of the member to be detected. The piston including a fixing hole having a depth smaller than a diameter of the piston in the portion exposed from the opening. The stay is fixed by a bolt that is inserted into the fixing hole.

A drivetrain for a hybrid vehicle comprising an electric machine and a double clutch device (which has an input side assigned to a drive unit, a first clutch arrangement assigned to a first transmission input shaft of a transmission for selective torque transmission between the drive unit and the first transmission input shaft, and a second clutch arrangement assigned to a second transmission input shaft of the transmission for selective torque transmission between the drive unit and the second transmission input shaft, wherein the first clutch arrangement has a first clutch input side which interacts with the electric machine, and the second clutch arrangement has a second clutch input side, wherein the first clutch input side of the first clutch arrangement is connected to the input side of the double clutch device via a freewheel or to the second clutch input side of the second clutch arrangement.

Provided is an automatic transmission with which a large impact is hardly applied to the component of the switching mechanism or the switching control circuit when the drive source is re-driven. When a drive source ENG is determined to be in the stopped state, if the position of a slider HC1 does not correspond to the position the control part ECU instructed before the drive source ENG is determined to be in the stopped state, the control part ECU of the automatic transmission TM transmits a signal for switching a two-way clutch TW to a state corresponding to the state of a slider HC1.

An actuator capable of preventing the inside of a cylinder from being scratched is provided. A two-way piston includes a cylinder having an opening, a piston, and a stroke sensor that detects a position of the piston. The stroke sensor includes a stay that extends from a portion exposed from the opening of the piston to the outside of the cylinder, a member to be detected that is attached to the stay, and a sensor that detects a position of the member to be detected. The piston including a fixing hole having a depth smaller than a diameter of the piston in the portion exposed from the opening. The stay is fixed by a bolt that is inserted into the fixing hole.

A control apparatus of an automatic transmission, which includes a mechanical engaging mechanism functioning as a brake, includes a determination unit determining, when a selected gear is a lowest forward speed gear, and the mechanism is in a second state, whether to switch the mechanism to the first state, and a switching processing unit switching the mechanism to the first state based on a determination result. In the first state, only rotation of a predetermined rotational element provided in planetary gear mechanisms in a first direction is restricted. In the second state, rotation of the predetermined rotational element in both the first and second direction is restricted. The determination unit determines to switch the mechanism to the first state at least on condition that a driving force is larger than a predetermined driving force.

A method for controlling an operation of the gear mechanism of a motor vehicle having a freewheel device coupled to an electrical machine and configured to couple the electrical machine rotation speed-dependently to an output of the freewheel device or decouple it therefrom. The gear mechanism depending on a state change signal, starting from a decoupled state of the freewheel device, is operated in a pre-synchronization phase in which the rotation speed of the electrical machine is regulated to a target rotation speed, in particular below an actual rotation speed of the output, and on reaching a nominal rotation speed below the target rotation speed, a coupling phase is implemented in which the target rotation speed is increased and the transition to the coupled state of the freewheel device is performed.

A hybrid vehicle is provided. In the hybrid vehicle an oil pump can be driven while stopping an engine without a device for interrupting torque transmission between a power split device and the engine. A differential mechanism includes a first rotary element to which torque is delivered from the engine, a second rotary element connected to drive wheels, and a third rotary element to which torque is delivered from the first motor. Torque transmission between the first motor and the third rotary element is interrupted by a clutch. A mechanical oil pump is driven by any one of the first input shaft and the second input shaft that is rotated higher than the other one.

A drivetrain for a hybrid vehicle comprising an electric machine and a double clutch device (which has an input side assigned to a drive unit, a first clutch arrangement assigned to a first transmission input shaft of a transmission for selective torque transmission between the drive unit and the first transmission input shaft, and a second clutch arrangement assigned to a second transmission input shaft of the transmission for selective torque transmission between the drive unit and the second transmission input shaft, wherein the first clutch arrangement has a first clutch input side which interacts with the electric machine, and the second clutch arrangement has a second clutch input side, wherein the first clutch input side of the first clutch arrangement is connected to the input side of the double clutch device via a freewheel or to the second clutch input side of the second clutch arrangement.

The hybrid drive device of the present invention includes a selectable one-way clutch 12 that includes a rotational plate that is capable of receiving the reaction torque of an internal combustion engine and that is provided to a power split mechanism, and that can be changed over between: a locked mode in which, in the state of receiving the reaction torque, positive rotation of the rotational plate is prevented while negative rotation of the rotational plate in the direction opposite to the positive rotation is permitted; and a free mode in which, in the state of receiving the reaction torque, the positive rotation and the negative rotation of the rotational plate are both permitted. And, when misfiring of the internal combustion engine occurs, the selectable one-way clutch is kept in the free mode.

With the control device, when the traveling state of the vehicle 1A is a specified traveling state in which greater change than a reference value of the torque upon the output portion 11 due to input to the drive wheels Dw from the road surface over which the vehicle is traveling has occurred a plural number of times within a predetermined time interval, then when the selectable one-way clutch 12 is in the locked mode it is changed over to the free mode, and when the selectable one-way clutch 12 is in the free mode it is kept in the free mode.