Four-wheel-steering device for vehicle

Abstract

Abstract PURPOSE:To prevent a side slide of wheels in a low speed range running, by correcting the steering performance with a correcting member in a low mu road running condition to increase the lateral gripping power of the wheels against the road. CONSTITUTION:A pulse motor 14 and a motor 24 to drive a hydraulic pump 23 are controlled to operate by control signals output from a controller 25 to control the rear wheel steering mechanism. To the controller 25 are input a steering angle signal from a steering angle sensor 26, a vehicle speed signal from a vehicle speed sensor 27, and a road surface friction coefficient signal from a road surface friction coefficient sensor 28. When the value of the road surface friction coefficient signal exceeds a preset value, the performance selecting member selects a normal running steering performance, while it selects a steering performance for a low mu road running when the value of the road surface friction coefficient signal is less than the preset value.

Inventors

• 👤 Maki Watanabe
• 👤 真樹 渡辺
• 👤 Noritaka Yasuda
• 👤 保田　紀孝
• 👤 Shigeki Furuya
• 👤 古谷　茂樹
• 👤 Tamahiro Watanabe
• 👤 渡邊　玲宏

Bibliographic Details