The brake combination valve typically consists of a series of chambers and passages that control the flow of brake fluid. When the brake pedal is depressed, the master cylinder sends brake fluid to the combination valve. The valve then divides the fluid and sends a portion to the front brakes and the rest to the rear brakes. The proportioning of fluid is determined by the mechanical design of the valve and is typically based on the weight distribution of the vehicle.
The brake combination valve also incorporates a proportioning valve that modulates the pressure sent to the rear brakes based on the load on the vehicle. This helps to prevent the rear wheels from locking up under heavy braking conditions, especially when the vehicle is lightly loaded.
Overall, the brake combination valve plays an important role in ensuring safe and balanced braking performance by distributing brake fluid pressure appropriately between the front and rear brakes.
