Hydraulic power assisted steering system for motor vehicle has bypass in each damping valve incorporating variable restrictor which increases throttling action in proportion to increase in centrifugal force on vehicle

摘要

The damping valves(15) in the hydraulic lines(10) to the servomotor(4) each have a bypass(18) which bypasses the main fluid line(16) through the damping valve. The bypass incorporates a variable restrictor(19) which increases its throttling action in proportion to the increase in centrifugal force on the vehicle. The restrictor, and also the restrictor(17) in the main fluid line through the damping valve, is constructed as a centrifugal force actuator, or interacts with such a component.