Method for Producing a Combined Service Brake Cylinder and Spring-Loaded Brake Cylinder of a Vehicle

摘要

To produce a combined service brake cylinder and spring-loaded brake cylinder for a vehicle brake system, force-actuation path characteristic curves of the brake system with the elements that can be actuated by a storage spring of the spring-loaded cylinder are measured/recorded under different operational conditions. Force-actuation characteristic curves of different storage springs for use in the spring-loaded cylinder are also measured/recorded. The minimum necessary actuation stroke of the piston of the spring-loaded cylinder and the minimum necessary spring force for a storage spring to effect a parking brake function are determined by the intersection of the force-actuation curves of the brake system with those of the storage springs. The storage spring that generates an actuation force sufficient to effect a parking brake function in the most unfavorable operating state of the brake system and with respect to maximum vehicle weight with the smallest possible actuation stroke, and the dimensions resulting from the smallest possible piston actuation stroke are selected for producing the combined service brake cylinder and spring-loaded cylinder.

主权项

1. A method for producing a combined service-brake and spring-loaded brake cylinder for a brake system of a vehicle, the method comprising:
a) in different operating states, determining force-actuation path characteristics of the brake system with all actuating members that are actuatable by a storage spring of the spring-loaded brake cylinder; b) determining force-actuation path characteristics of different storage springs for potential use in the spring-loaded brake cylinder; c) determining a minimum required actuating stroke of a piston of the spring-loaded brake cylinder and a minimum required spring force of the storage spring for effecting a parking brake function via the spring-loaded brake cylinder by ascertaining points of intersection of the force-actuation path characteristics of the brake system with the force-actuation path characteristics of the different storage springs; d) selecting a one of the different storage springs that, in a least favorable operating state of the brake system and with a given maximum vehicle mass, produces an actuating force sufficient to effect a parking brake function with the smallest possible actuating stroke; and e) producing the combined service-brake and spring-loaded brake cylinder using the selected one of the storage springs and having dimensions based at least in part on the smallest possible actuating stroke of the piston of the spring-loaded brake cylinder.