FLOW SENSITIVE, ACCELERATION SENSITIVE SHOCK ABSORBER.

摘要

An acceleration sensitive shock absorber has a tubular housing and a piston assembly in the housing (11) dividing the housing into an upper chamber (13) and a lower chamber (12). The piston is connected to the wheel of a vehicle and the housing is connected to the chassis of the vehicle. Fluid can pass between the upper and lower chamber to the upper chamber upon downward acceleration of the wheel. A movable inertia valve (46) in the piston assembly opens the first port when acceleration of the wheel of the vehicle is greater than a predetermined magnitude for increasing flow between the chambers. In addition, there is a first restricted flow path (48) downstream from the first port for creating hydraulic pressure which biases the inertia valve in an open position in response to fluid flow between the chambers. There is a second port (43) or passage for providing fluid flow from the upper chamber to the lower chamber. A second restricted flow path upstream from the second which provides hydraulic pressure to decrease the response time during compression.