| 摘要 |
FIELD: transport.SUBSTANCE: proposed device comprises pressure valve (50, 51, 52, 53), piston pump (69A, 69B) and brake fluid pressure control means. Said brake fluid pressure control means sets close/open interval of pressure valve (50, 51, 52, 53) so that valve open interval makes that of brake fluid flow rate in piston pump (69A, 69B) to control pressure valve (50, 51, 52, 53) proceeding from selected valve open interval. Said brake fluid pressure control means sets open interval of pressure valve (50, 51, 52, 53) so that valve open interval makes that equal to or greater than, at least, one piston pump stroke. Said brake fluid pressure control means sets open interval of pressure valve (50, 51, 52, 53) proceeding from rpm at output of motor 68 that drives piston pump (69A, 69B).EFFECT: higher accuracy of control.4 cl, 6 dwg |
