Brake apply master cylinder

摘要

A brake apply master cylinder includes a body and a piston assembly. The body includes a bore (16). The bore has a longitudinal axis, a closed front end, a primary fluid outlet (22) fluidly connectable to a primary brake circuit, and a secondary fluid outlet (26) fluidly connectable to a secondary brake circuit. The piston assembly includes a single brake apply piston (30) positioned in the bore. The piston assembly fluidly divides the bore into a primary fluid chamber (32) in fluid communication with the primary fluid outlet and a secondary fluid chamber (34) in fluid communication with the secondary fluid outlet. Another brake apply master cylinder includes a body, a piston assembly, and a return spring assembly (72). The return spring assembly is positioned in the bore of the body and extends from the closed front end of the bore to a return-spring seat of a single brake apply piston of the piston assembly.