Active chassis of a vehicle

Details Active chassis of a vehicle Active chassis of a vehicle

2007-01-19

2009-11-03

Ilan, Ruth (Department: 3616)

Land vehicles

Suspension modification enacted during travel

Lateral and longitudinal vehicle attitude control

C280S005508, C280S124106, C280S124160, C280S124161

Reexamination Certificate

active

07611152

ABSTRACT:
An active chassis system of a motor vehicle having two axles with two wheels each. Each wheel is supported via a spring element and a hydraulic piston-cylinder unit acting as a damper and as a hydraulic actuator for introducing additional force between the wheel and the body. Each of the working chambers of the actuator is supplied with hydraulic pressure from a delivery pump. The working chambers of actuators of an axle having smaller cross-sectional area are connected directly to one another, and a directional valve is used for roll control. The directional valve is a pilot-operated directional valve whose control pressure is tapped in parallel with a controllable throttle. The throttle is connected between the working chambers having larger cross-sectional area of the axle's two actuators, and adjusts the pressure drop between the working chambers, depending on the direction of rotation and/or the output of the delivery pump.

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