Question

in a hydraulic accumulator brake system, which components are typically part of a combination valve?

1. priority valve
2. fan solenoid valve
3. brake charging valve
4. service brake control valve

Explanation:

In a hydraulic accumulator brake system, the combination valve typically includes components related to brake control and charging. The priority valve (1) is part of the combination valve as it manages the priority of fluid flow for brake and other systems. The brake charging valve (3) is also part of it to charge the accumulator. The service brake control valve (4) is involved in controlling the service brakes. The fan solenoid valve (2) is related to cooling systems, not the brake combination valve. So the correct components are 1) Priority valve, 3) Brake charging valve, 4) Service brake control valve. But if we consider typical ones, often priority valve, brake charging valve, and service brake control valve are part of the combination valve. However, among the options, the priority valve (1), brake charging valve (3), and service brake control valve (4) are part of the combination valve in a hydraulic accumulator brake system. The fan solenoid valve is for fan control, not the brake combination valve.

Answer:

1. Priority valve, 3) Brake charging valve, 4) Service brake control valve