A damper (40) for damping tactile vibration (FIG. 4) caused by pressure changes induced in hydraulic fluid by an operational characteristic of a hydraulic-operated brake (22; 24) when the brake is braking a rotating object (14; 16). A piston (54) is displaceable within a housing bore (52) and divides the bore into a first chamber (56) confronting one axial face of the piston and a second chamber (58) confronting an opposite axial face of the piston. A port (59) communicates hydraulic fluid to the first chamber such that increasing hydraulic fluid pressure is effective to displace the piston toward the second chamber. A spring (60) that is operated by displacement of the piston within the bore resists piston displacement toward the second chamber as hydraulic fluid pressure increases and aids piston displacement toward the first chamber as hydraulic fluid pressure decreases. The invention is useful in hydraulic-operated motor vehicle brakes.
A fluid damping system for brake fluid disposed in a brake line on a vehicle in which the damping system converts incompressible fluid pulses into damped energy by an accumulator which dissipates the energy to remove the pressure pulses from the fluid system.
