Brake pressure modulator for anti-skid systems

Abstract

Abstract 1. A brake pressure modulator for an anti-skid system, of the type comprising an isolating valve (16) connected between a conduit (12) to be connected to a brake pressure source and an outlet conduit (13) to be connected to a brake motor, a discharge valve (20) connected between the outlet conduit and a reservoir (15), a refilling circuit (30) including a flow restriction (31), and a control solenoid (26) provided with an actuating member (27), the isolating and discharge valves (16, 20) having their respective movable valve members (17, 20) along a common axis and their respective seats (18, 23) opposed to each other, the actuating member (27) of the solenoid being coupled to the movable valve member (22) of the discharge valve (20), which is mechanically connectable to the movable valve member (17) of the isolating valve (16) by a connecting member (32) sliding in a bore (33) for displacing the latter towards its seat (18) opposite to a resilient return means (19) when the control solenoid is actuated, characterized in that the movable valve member (17) of the isolating valve comprises a cylindrical portion (32) forming the connecting member and defining in its interior a conduit portion (34) of the refilling circuit laterally (36) opening into the bore, said conduit portion (32) opening in the axial end of the cylindrical portion (32) cooperating with the movable valve member (22) of the discharge valve (20) and being adapted to be closed by the latter, the cross section (S2) of the cylindrical portion (32) being smaller than the cross section (S1) of the seat (18) of the movable valve member (17) of the isolating valve (16).

Inventors

• 👤 Pierre Bénéteau

Bibliographic Details