Abstract: A brake valve for a motor vehicle brake system is interposed in the brake line between the master cylinder and the rear wheel brakes and is constructed to limit the fluid pressure at the rear brakes relative to the pressure at the front brakes during the application of master cylinder pressure. Pressure is limited at the rear brakes for the purpose of balancing the front and rear brakes in accordance with their relative effectiveness. The valve includes an inertia sensor that senses the rate of vehicle deceleration and modulates the pressure ratio between the front and rear brakes accordingly. The valve mechanism with its inertia sensor provides a device for compensating for the amount of load carried by the vehicle which, in turn, affects the relative effectiveness of the front and rear brakes.

Abstract: A brake valve for a motor vehicle brake system is interposed in the brake line between the master cylinder and the rear wheel brakes and is constructed to limit the increase in fluid pressure at the rear brakes relative to the increase in pressure at the front brakes during the application of master cylinder pressure. Pressure is limited at the rear brakes for the purpose of balancing the pressure between the front and rear brakes in accordance with the relative effectiveness of those brakes. The valve includes an inertia sensor that senses the rate of vehicle deceleration and modulates the pressure ratio between the front and rear brakes. The valve mechanism including its inertia sensor provides a device for compensating for the amount of load carried by the vehicle which, in turn, affects the relative effectiveness of the front and rear brakes.