Nippondenso Co., Ltd.

Kunihiro Nakagawa

Masao Sakurai

Morimasa Ninomiya

Toshihide Takechi

Yousuke Hamada

Takashi Fujii

An automobile differential gear system capable of establishing an appropriate differential motion between the right and left driving axles of an automobile so that the automobile is able to run smoothly along a curve where the right and left driving axles are required to be driven at different revolving rates respectively. The system comprises a differential gear, a steering angle detecting unit for detecting a steering angle, a driving speed detecting unit for detecting the speed of the differential gear case, a pinion speed control unit which provides a control signal for controlling the differential motion of the right and left driving axles of the automobile, and a pinion driving unit for rotating the pinions to control the respective revolving rates of the right and left driving axles according to the control signal so that correct and quick response of the movement of the automobile to steering operation is achieved.

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Kariya, Japan

Kunihiro Nakagawa