초록 ▼

A brake system including a master cylinder for generating pressurized fluid, a wheel brake in fluid communication with the master cylinder, and a first valve for regulating the flow of fluid between the master cylinder and the wheel brake. The brake system further includes a pedal travel simulator i

A brake system including a master cylinder for generating pressurized fluid, a wheel brake in fluid communication with the master cylinder, and a first valve for regulating the flow of fluid between the master cylinder and the wheel brake. The brake system further includes a pedal travel simulator including a housing having a bore formed therein. A piston is slidably disposed in the bore. The piston and the housing generally defining a fluid chamber which is in fluid communication with the master cylinder. The pedal travel simulator further includes a spring which biases the piston in a direction so as to contract the fluid chamber. The brake system further includes a source of pressurized fluid and a boost valve which is in fluid communication with the source of pressurized fluid and the wheel brake. The boost valve is actuated by the spring of the pedal travel simulator to supply pressurized fluid from the source of pressurized fluid to the wheel brake at a pressure ratio greater than fluid pressure generated by the master cylinder.

대표청구항 ▼

[ What is claimed is:] [1.] 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,

[ What is claimed is:] [1.] 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.