Land vehicles – Wheeled – Running gear
Patent
1988-10-07
1990-06-19
Bertsch, Richard A.
Land vehicles
Wheeled
Running gear
188314, 267 6421, 280709, 280714, B60G 1126, B60G 1700
Patent
active
049347322
ABSTRACT:
A suspension control system introduces capability of automatically adjusting sensibility of attitude change depending upon a vehicular speed with maintaining capability of manual adjustment of the sensibility for the vehicular attitude change. The actively controlled suspension system employs a pressure control valve which is operable in response to a control signal and controls fluid pressure in the fluid chamber of a hydraulic cylinder as a replacement of the conventional hydraulic shock absorber. The pressure control valve is associated with a controller which detects bounding and rebounding acceleration and stroke speed in bounding and rebounding motion for detecting vehicular attitude change and deriving a control signal to operate the pressure control valve to suppress attitude change. The controller is response to a vehicle speed indicative parameter for adjusting sensitivity of attitude change and whereby adjusting suspension control characteristics.
REFERENCES:
patent: 3029089 (1962-04-01), Nashman
patent: 3124368 (1964-03-01), Corlev
patent: 4368900 (1983-01-01), Beusse
patent: 4696483 (1987-09-01), Takizawa et al.
patent: 4700972 (1987-10-01), Young
patent: 4702490 (1987-10-01), Yamaguchi et al.
patent: 4706787 (1987-11-01), Wossner
patent: 4743000 (1988-05-01), Karnopp
Transportation Electronics: Proceedings of the International Congress on Transportation Electronics, Oct., 1986, pp. 333-338, Wright et al. "The Application of active suspension to high performance road vehicles".
Akatsu Yohsuke
Fukunaga Yukio
Fukushima Naoto
Hano Sunao
Satoh Masaharu
Bertsch Richard A.
Nissan Motor Company Limited
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