Jatco Corporation

Nissan Motor Company Limited

Tomoyuki Suwabe

Kosuke Abe

Shin Tsukamoto

Fumitaka Nagashima

Hajime Tasaka

Yoshiaki Ueda

Youhei Ishikawa

Kokan Boku

Ryusuke Oshiro

Soyoung Lee

Pressure regulation valve control device has line pressure regulation valve () having line pressure solenoid () and line pressure spool valve () and CVT control unit () controlling secondary pressure (Psec) by actuating the line pressure spool valve () by solenoid pressure (Psol) produced by controlling current command value (I) to the line pressure solenoid (). CVT control unit () has abnormality control unit (). The abnormality control unit () is configured to, when decrease in secondary pressure (Psec) is detected during travel, execute, during travel, abnormality control that increases solenoid pressure (Psol), supplied to line pressure spool valve () from line pressure solenoid (), more than solenoid pressure (Psol) of a time when the decrease in secondary pressure (Psec) is detected. With this, even when the decrease in the pressure is detected during travel, the decrease in the pressure is suppressed during travel while reducing influence on vehicle travel.

Pressure regulation valve control device

Control device for continuously variable transmission () with auxiliary transmission having variator (); hydraulic pressure control circuit () having primary pressure solenoid (); and transmission ratio controller () controlling the transmission ratio of variator () by feedback control. The transmission ratio controller () has a high limiter control unit (FIG.) that, when receiving a high transmission ratio limiting request, performs a high limiter control that limits the transmission ratio to a High limit line. The transmission ratio controller () also has a primary pressure lower limit regulation control unit (FIG.) that, when operation of the high limiter control is started during a time period when the transmission ratio is present at a High transmission ratio side with respect to the high limit transmission ratio, regulates a decrease of a primary command pressure to the primary pressure solenoid up to a High limiter-operated final target primary lower limit pressure.

Control device for continuously variable transmission

A vehicle control device separately controls driving powers distributed to right and left wheels. The vehicle control device is configured to execute a vehicle posture control for reducing the driving powers transmitted from a driving source to the wheels by a request from a vehicle side. The vehicle control device includes a slip detection unit and a torque control unit. The slip detection unit is configured to detect a slip in the wheels. The torque control unit is configured to determine whether to perform a torque control after an operation of the vehicle posture control according to a detection result of the slip and a state of a transmission. The torque control is a control to control a torque input to the transmission by a request from the transmission side. The torque control unit is configured to execute the torque control on the basis of a determination result.

Vehicle control device and method for controlling the same

A control device for a continuously variable transmission includes a wheel speed difference sensing section configured to sense a wheel speed difference between the driving wheel and the driven wheel from a detection value of the first rotation speed sensor and a detection value of the second rotation speed sensor; and a clamping force increasing section configured to increase a clamping force for sandwiching a belt of the continuously variable transmission by a pulley when the wheel speed difference becomes equal to or greater than a first predetermined value, relative to a case where the wheel speed difference is smaller than the first predetermined value.

Controller for continuously variable transmission

In vehicular control method and apparatus for a shift-by-wire device, a selected shift position is modified to at least one of a vehicular parking position, a neutral position, and a traveling position, the selected shift position is modified to the vehicular parking position when a power switch is switched to an OFF position, and the modification of the shift position to the vehicular parking position is inhibited when an operation pattern of an operation input section while the power switch is in the ON position is made coincident with the operation pattern prescribed as a cipher code which inhibits the shift position modification to the vehicular parking position, the operation patterns being constituted by a combination of operation patterns which would not be carried out in the operation section during an ordinary traveling.

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Atsugi, Japan

Tomoyuki Suwabe