Patent ID: 6079436
Filing Date: 2000-06-27
Classification: B60T,Y10T

Abstract:
An energy supply device (1) of a compressed air brake system for commercial vehicles, comprising a compressor (2) for supplying at least one compressed air consumer by means of a supply line (3) a check valve (5) disposed in said supply line (3),a pneumatically controllable outlet valve (7), which is connected to the supply line (3) between the compressor (2) and the check valve (5) and includes an activation means (8),an electromagnetically controllable pressure regulating valve (11), with which control air withdrawn at the consumer end can be conveyed through a control line (17, 20) to the outlet valve (7) in order to switch said outlet valve into an outlet position,a pressure sensor (25) that detects the pressure on the consumer end, andcontrol electronics (24) which control the pressure regulating valve (11) according to the pressure detected,a second pressure regulating valve (12) that can be controlled directly by the pressure on the consumer end, with which control air withdrawn on the consumer end can be conveyed by said second pressure regulating valve (12) through a control line (18, 20) to the outlet valve (7) in order to switch the outlet valve into the outlet position, wherein the second pressure regulating valve (12) switches when there is a pressure on the consumer end that is greater than the switching pressure (disconnect pressure) of the electromagnetically controllable first pressure regulating valve (11).