Parking brake valve and a parking brake system with the same as well as vehicle and method for controlling a parking brake system

摘要

The parking braking system (100) has vehicle axles (4,28) that are provided with axle brake devices (5,27). A parking brake valve (7) formed of magnetic valve or directional valve is connected to the axle brake devices such that the axle brake devices are selectively released. The axle brake devices are connected with brake relay valve (22) and fluid supply sources (14a,14c) respectively in two different positions of the parking brake valve. An independent claim is included for method for controlling parking brake system.