MOTOR VEHICLE SUSPENSION AIR-HYDRAULIC SHOCK-ABSORBER Russian patent published in 2008 - IPC B60G11/26 

FIELD: transport.

SUBSTANCE: motor vehicle suspension air-hydraulic shock-absorber incorporates a cylinder housing a piston with a rod to form a piston and annular spaces. The shock-absorber contains also a hydraulic accumulator arranged in a bottle accommodating a separating diaphragm to form an air space and hydraulic space communicating with the cylinder piston space via a valve mounted in the said bottle. The aforesaid valve represents a damping element, self-adjustable depending upon pressure difference and furnished with the main throttling channel that continuously communicates the cylinder piston space with the hydraulic accumulator hydraulic space. The check valve communicates occasionally the cylinder piston space with the hydraulic accumulator hydraulic space. A spring-loaded stepwise plunger is arranged in the damping assembly casing central bore to form with it several plunger spaces. This invention allows effecting a stepwise N-like variation of the damping characteristic rigidity subject to the shock-absorber compression rated due to higher drag in the compression low and high rate zone and drag stepwise decrease at medium compression rates.

EFFECT: smooth run of the motor vehicle on whatever roads and higher reliability of the shock-absorber.

3 dwg