| 摘要 |
<p>The invention relates to a method and device for preparation of compressed air in motor vehicles, wherein ambient air is drawn in and compressed by a compressor (2) driven by the drive motor of the motor vehicle, is dried in an air dryer (4, 4') disposed downstream and is conveyed to compressed air consumers (storage tanks 14, 16), wherein furthermore the air dryer (4, 4') is regenerated by means of system air which is stored in a regeneration reservoir (30, 30'), guided via the air dryer (4, 4') and vented via an associated venting valve (22), and wherein at predetermined operating states an electrically controlled governor (36, 36') switches between a conveying phase and a regeneration phase. The conveying phase of the compressor preferably takes place, at least in the event of high compressed air consumption, in driving mode at a high speed of the drive motor, and the regeneration phase takes place at least, but preferably, in stationary mode at idling speed of the drive motor, in order to keep the conveying phases short and to have sufficient time available for the regeneration. The governor (36, 36') comprises two control valves (40, 44) electrically controlled by an electrical control device (46, 46') in order to be able to control the compressor (2) and the air dryer (4, 4') as required and independently of the system pressure.</p> |
