Nissan Motor Company Limited

Katsuhiro Suda

Hitoshi Ono

Yoshikazu Takahashi

Yoshiki Yasuno

Koh Uchida

Takayuki Bitou

Taisuke Ueda

Toru Inoue

Hideyuki Kita

Yohei Koike

Nariaki Tazawa

Youji Hoshino

A working fluid medium temperature control system comprises an actuator operable on a working fluid medium, a pump for the working fluid medium, a fluid passage structure for the working fluid medium, an electric motor drivingly connected to the pump, and a control unit for the electric motor, the control unit including an inverter and an inverter controller. The inverter and the electric motor are integrated in such a way that the inverter is in heat transfer communication with the electric motor. The fluid passage structure is in heat transfer communication with the inverter.

Working fluid medium temperature control system and method

A vehicle steering control system is provided with a steering angle ratio varying mechanism, a variable power assisted steering mechanism and a steering angle ratio controller. The steering angle ratio varying mechanism varies the steering angle ratio, which is the ratio of the turning angle of the front wheels with respect to the steering angle of the steering wheel. The variable power assisted steering mechanism outputs an auxiliary steering force that supplements the steering force of the driver to the steering mechanism for turning the front wheels. The steering angle ratio controller increases the steering angle ratio in a steering angle range in the vicinity of the steering angle center point, and reduces the steering angle ratio in the steering angle range in the vicinity of the rack stopper position, regardless of the steering angular speed of the steering wheel.

Vehicle steering control system

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Hadano, Japan

Katsuhiro Suda