Jatco Corporation

Nissan Motor Company Limited

Hisashi Saito

Hideharu Yamamoto

Hiromichi Akebono

Kota Miura

Shinya Mochiyama

Atsushi Maeda

A friction engagement element (CLx) is provided radially outside of a peripheral wall portion () of a clutch drum () and configured to be engaged by a piston (). A piston () is provided radially inside of the peripheral wall portion () and configured to engage and a friction engagement element (CLz). A first peripheral wall portion () of the peripheral wall portion () includes through-holes () communicating a radially inside of the first peripheral wall portion () with a radially outside thereof. A through-hole () is provided radially inside of the piston (). The piston () includes a communication passage () radially passing through the piston () and communicating the through-hole () with the through-holes () such that lubricating oil is supplied through the communication passage () and the through-holes () to the radially outside of the clutch drum () when the piston () is in an initial position.

Lubricating structure for friction engagement element of automatic transmission

In control apparatus and method for a vehicle, the vehicle including a traveling mode (a WSC traveling mode) in which a slip control is performed for a clutch (second clutch CL) and a revolution speed control is performed for the driving source such that a revolution speed at a driving source side of the clutch becomes higher than that at a driving wheel side of the clutch by a predetermined revolution speed, an actual torque of a driving source of the vehicle is detected, a command hydraulic pressure is reduced from an initial command hydraulic pressure and a post-correction command hydraulic pressure is set on a basis of the command hydraulic pressure when a variation in the actual torque of the driving source along with the reduction of the command hydraulic pressure is determined to end, when a vehicle stopped state is determined to occur during the traveling mode.

Control apparatus for vehicle and control method therefor

A hybrid electric vehicle has a first mode in which slippage of a clutch between an electric motor and a driving wheel is allowed and controlled by rotational speed control of the electric motor and a second mode in which the slippage of the clutch is allowed and controlled by rotational speed control of an engine. When the vehicle is stationary in the first mode, a controller reduces a control setpoint of hydraulic pressure of the clutch from an initial point. The controller identifies a reference point of the control setpoint with which actual output torque of the electric motor becomes unchanged with respect to the reduction of the control setpoint. Then, the controller increases the control setpoint from the reference point at a higher gradient and then a lower gradient, and then sets the control setpoint to a corrected point below the initial point and above the reference point.

Vehicle control apparatus and vehicle control method

A hybrid electric vehicle has a first mode in which slippage of a clutch between an electric motor and a driving wheel is allowed and controlled by rotational speed control of the electric motor and a second mode in which the slippage of the clutch is allowed and controlled by rotational speed control of an engine. When the vehicle is stationary in the first mode, a controller reduces a control setpoint of hydraulic pressure of the clutch from an initial point. The controller identifies a reference point of the control setpoint with which actual output torque of the electric motor is substantially constant with respect to the reduction of the control setpoint. Then, the controller increases the control setpoint to a precharge point, and reduces the control setpoint to a corrected point that is lower than or substantially equal to the initial point and higher than the reference point.

Growing community of inventors

Shizuoka, Japan

Hisashi Saito