초록 ▼

An active vehicle suspension system has a suspension device with a variable offset gas spring and a double acting hydraulic actuator acting in parallel. Load changes experienced by the device are sensed electrically, or electrically and hydraulically, so as to effect appropriate response of the devi

An active vehicle suspension system has a suspension device with a variable offset gas spring and a double acting hydraulic actuator acting in parallel. Load changes experienced by the device are sensed electrically, or electrically and hydraulically, so as to effect appropriate response of the device by adjustment of the actuator pending change of the offset of the gas spring, so as to reduce energy requirements.

대표청구항 ▼

In a vehicle suspension system: a wheel suspension device, said wheel suspension device comprising a double-acting hydraulic actuator, said hydraulic actuator having a piston movable therein, and gas spring means in parallel with said hydraulic actuator, said gas spring means being controllable to p

In a vehicle suspension system: a wheel suspension device, said wheel suspension device comprising a double-acting hydraulic actuator, said hydraulic actuator having a piston movable therein, and gas spring means in parallel with said hydraulic actuator, said gas spring means being controllable to provide a selectively variable offset, a hydraulic fluid pressure source, a pressure fluid line communicating said hydraulic actuator with said hydraulic fluid pressure source, valve means in said pressure fluid line, sensor means providing an output in response to the sensing thereby at a load change experienced by said suspension device, and control means responsive to said sensor means output to supply a control signal to said valve means to thereby effect adjustment of said hydraulic actuator before change of said offset of said gas spring means, to accommodate said load change.