Electronic compressed-air system

Details Electronic compressed-air system Electronic compressed-air system

2011-05-24

2011-05-24

Williams, Thomas J (Department: 3657)

Fluid-pressure and analogous brake systems

Multiple systems

Fluid pressure and electric

C303S015000

Reexamination Certificate

active

07946660

ABSTRACT:
An electronic compressed-air system includes a compressed-air supply part having a compressor and a consumer part having load circuits. The load circuits are supplied with compressed-air via solenoid valves. At least one load circuit is provided with a pressure reservoir. The pressure in the load circuits is monitored by pressure sensors, whose signals are evaluated by an ECU that controls the solenoid valves. The load circuits include service-brake circuits having a compressed-air reservoir, secondary load circuits and a high-pressure circuit, wherein the solenoid valves of the service-brake circuits and the solenoid valves of the secondary load circuits are open in a de-energized normal state and the solenoid valve of the high-pressure circuit is closed in the de-energized normal state.

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