System for vehicle body roll control with overshoot prevention

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 4809176
SERIAL NO

06921468

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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In this system for vehicle roll control, a plurality of duty radio controlled actuator assemblies are provided, one corresponding to each one of the vehicle wheels, and resiliently suspended from the vehicle body. These actuator assemblies have pressure chambers, and each is adapted to increase or decrease the vehicle height at a location corresponding to its corresponding vehicle wheel as a result of the supplying or discharging of working fluid to or from its pressure chamber. Working fluid supplying and discharging means supply working fluid to and discharge working fluid from the pressure chambers of the actuator assemblies. The system further includes means for sensing the road speed of the vehicle, and means for sensing the steering angle of the vehicle. Vehicle height detection means are also provided for sensing the heights of the vehicle above the vehicle wheels. A means for computing and control calculates the deviations of the actual detected vehicle body heights from standard vehicle body heights; when a certain condition is satisfied, it controls the working fluid supplying and discharging means according to a first duty ratio according to the deviations of the actual vehicle body heights, so as to maintain the deviations of the actual vehicle body heights within predetermined ranges; and then it controls the working fluid supplying and discharging means in the reverse order according to a second duty ratio.

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Patent Owner(s)

Patent OwnerAddress
TOYOTA JIDOSHA KABUSHIKI KAISHA1 TOYOTA-CHO TOYOTA-SHI AICHI-KEN 471-8571
TOYOTA CENTRAL RESEARCH AND DEVELOPMENT LABORATORIES INC41-1 YOKOMICHI NAGAKUTE-CHO AICHI-GUN AICHI 480-1192

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Arai, Yasuji Toyota, JP 4 90
Doi, Shunichi Aichi, JP 29 897
Ikemoto, Hiroyuki Toyota, JP 31 870
Oowa, Nobutaka Toyota, JP 6 236
Yasuike, Osamu Toyota, JP 9 134

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