The invention discloses a front-axle parking foot brake valve, a brake system and a detection method of parking brake functions. The front-axle parking foot brake valve comprises a first chamber, a second chamber, a third chamber, a fourth chamber and a control opening which are sequentially arranged from top to bottom, wherein the control opening is used for communicating with an air outlet end of a hand brake valve of a vehicle, and communicates with the fourth chamber. The brake system comprises the hand brake valve, an air supply, a front-axle brake air chamber, a rear-axle brake air chamber and the foot brake valve. The method for detecting the parking brake functions, comprises the following steps of: arranging the brake system on the vehicle to be detected; enabling the vehicle to be detected to run to a target ramp, and pulling the hand brake valve to a parking position when the vehicle runs to a specified position; continuing to pull the hand brake valve to a detecting position, checking whether the vehicle to be detected can be parked at the specified position or not by completely depending on the mechanical braking force of a rear-axle spring brake air chamber. According to the front-axle parking foot brake valve, the brake system and the detection method, disclosed by the invention, the overall parking brake force of the vehicle is increased, so that the front-axle parking foot brake valve, the brake system and the detection method are particularly suitable for oversize vehicles.
Front-axle parking foot brake valve, brake system and detection method of parking brake functions
2015-12-16
Patent
Elektronische Ressource
Englisch
IPC: | B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF |
Automobile front axle parking brake device and automobile parking brake system
Europäisches Patentamt | 2015
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