Magnetic valve for vehicle braking system

摘要

The magnetic valve has a main valve body (49) biassed in the closed direction and with a choke communication path which constricts the line's cross-section. A valve body (52) biassed in the closed direction opens or closes the choke path in the main body. A magnetic force generator overcomes the bias force to open the auxiliary valve. An engagement body (53) combined with the auxiliary body engages the main body. The magnetic valve is arranged in a line between a braking pressure generator and the suction side of a pump supplying a wheel braking pressure generator and acts as a pressure pump. A main valve contains a main valve body biassed in the closed direction and with a choke communication path which constricts the line's cross-section. An auxiliary valve with a valve body biassed in the closed direction opens or closes the choke path in the main body. A magnetic force generator overcomes the bias force to open the auxiliary valve. An engagement body combined with the auxiliary body engages the main body to move it in the open direction when the auxiliary body is moved in the open direction. The magnetic force generator changes the generated force from that required to open the auxiliary valve to that required to open both. An Independent claim is also included for a braking system.