Vehicle hydropneumatic suspension system
AssigneeNissan Motor Co., Ltd.
InventorMituo Hiruma
Life of this patent
Estimating the term…
Abstract
A hydropneumatic suspension strut is provided with two pressure accumulators which each cooperate with the fluid chamber of the strut. A valve cuts off cooperation between the fluid chamber and one of the pressure accumulators in response to braking of the vehicle to increase suspension stiffness.
Claims3
A suspension system in a vehicle, comprising a retractable and extensible suspension strut having a fluid chamber therein, said fluid chamber being filled with pressurized hydraulic fluid and being variable in volume in response to increases and decreases in a load applied to said suspension strut to cause shortening and lengthening thereof, first and second pressure accumulators each of which is in interacting relationship with said fluid chamber to permit variations in the volume of said fluid chamber, and control means disposed between said fluid chamber and said second pressure accumulator, said control means normally permitting said interacting relationship between said fluid chamber and said second pressure accumulator and inhibiting said interacting relationship therebetween in response to braking of the vehicle.
A suspension system in a vehicle, comprising first and second retractable and extensible suspension struts cooperating respectively with left and right wheels of the vehicle, each of said suspension struts having a fluid chamber which is filled with pressurized hydraulic fluid and which is variable in volume in response to increases and decreases in a load applied to the corresponding suspension strut to cause shortening and lengthening thereof, and first and second pressure accumulators each of which is in interacting relationship with said fluid chamber of the corresponding suspension strut to permit variations in the volume of said fluid chamber, and control means disposed between said fluid chamber of each of said suspension struts and each of the corresponding second pressure accumulators, said control means normally permitting said interacting relationship between the corresponding fluid chamber and second pressure accumulator and inhibiting said interacting relationship therebetween in response to braking of the vehicle.
Dependencies are inferred from the claim text.