| 摘要 |
<p>Headlight cleaning system has pressure control valve (7), assigned to washing liquid channels (9), guided in such a way that washing liquid impact produced by feed pump opens pressure valve at nozzle support (3) by closing both pressure valve at other nozzle support for the continuous impact of the detergent. Subsequent impact of detergent opens the so far closed pressure control valve, whereby pressure control valve that closes again remains closed.</p> |
