Patent ID: 6183050
Filing Date: 2001-02-06
Classification: B60T,Y10S

Abstract:
A brake system comprising:a master cylinder for generating pressurized fluid into a fluid conduit;a wheel brake in fluid communication with said master cylinder;a pedal travel simulator having:a housing having a bore formed therein;a piston slidably disposed in said bore, said piston and said housing generally defining a fluid chamber being in fluid communication with said fluid conduit; anda spring biasing said piston in a direction to contract said fluid chamber;a source of pressurized fluid;a boost valve in fluid communication with said source of pressurized fluid and said wheel brake, said boost valve being actuated by said spring of said pedal travel simulator to supply pressurized fluid from said source of pressurized fluid to said wheel brake via a supply conduit at a pressure ratio greater than fluid pressure generated by said master cylinder; anda pedal travel simulator valve for regulating the flow of fluid in said fluid conduit, said pedal travel simulator valve being movable between a first position wherein fluid is permitted to flow between said master cylinder and said fluid chamber of said pedal travel simulator, and a second position wherein fluid is prevented from flowing in a direction from said master cylinder to said fluid chamber of said pedal travel simulator.