ACTUATOR FOR BRAKE SYSTEMS OF VEHICLES Russian patent published in 1995 - IPC

FIELD: automotive industry. SUBSTANCE: two solenoid two- position valves, distributing slide valve with the face control chambers, and passages for connecting to a source of working fluid, pressure accumulator and servomotor are mounted inside a housing. The slide valve has axial passage, radial passages, and two outer ring grooves connected with the axial passage through the radial passages. The axial passage is connected to the first face control chamber. One of the radial passages is constructed as a throttle of constant cross-section and is connected with the first ring groove positioned so that to define a port of varying cross-section by its edges and the passage of the housing coupled with the source of fluid. The inlet of the normally open first valve is connected to the second ring groove. The outlet of the valve is connected to the housing passage coupled with the servomotor and connected with the pressure accumulator through the normally closed second valve. EFFECT: improved design. 4 cl, 1 dwg