Four-wheel-steering device for vehicle

Abstract

Abstract PURPOSE:To prevent a side slide of wheels, by correcting the given steering ratio performance of a steering ratio converting device in the direction of the same phase with a correcting measure in a down slope running in order to increase the gripping power of the rear wheels against the road. CONSTITUTION:A pulse motor 14 and a motor 24 to drive a hydraulic pump 23 are controlled by control signals output from a controller 25 to control the rear wheel steering mechanism. To the controller 25 are input a steering signal from a steering angle sensor 26, a vehicle speed sensor 27, and a signal from a down slope sensor 28 to detect the down slope from the inclination of the road. In the controller 25 is furnished a performance selecting member to receive the down slope signal from the down slope sensor 28, through which a down slope running condition can be detected. And in the down slope running condition, the rear wheels are steered in a performance corrected in the same phase side compared to a plain road running condition.

Inventors

• 👤 Hirotaka Kanazawa
• 👤 金澤　啓隆
• 👤 Noritaka Yasuda
• 👤 保田　紀孝
• 👤 Tamahiro Watanabe
• 👤 渡邊　玲宏
• 👤 Akihiko Miyoshi
• 👤 三好　晃彦

Bibliographic Details