Producing vacuum in vehicle involves activating pump if measured vacuum near vacuum-operated device falls below threshold and depending on vehicle's drive engine operating state

摘要

The process involves the use of a pump that supplies a vacuum to at least one vacuum-operated device in a vehicle, whereby the vacuum is determined near the device and the pump is activated if the measured vacuum falls below a defined threshold value. The vacuum pump is also activated depending on the operating state of the vehicle's drive engine. An Independent claim is also included for an arrangement for producing a vacuum in a vehicle.