| 摘要 |
<p>A pumping system for a vehicle wash system (10) in which the pumping system (32) includes a single, variable speed pumping unit (34). The variabel speed pumping unit (34) includes a variable speed motor that is controlled by a variable frequency motor drive (60) such that the single pumping unit supplies water at varying pressures to the vehicle wash system. The vehicle wash system includes a plurality of distribution manifolds (28, 30) that can be selectively opened to apply water and/or a chemical agent to the vehicle during the wash cycle. The variable speed pumping unit of the vehicle wash system is controlled by a wash controller (46) such that the wash controller (46) can selectrively control the pressure of water flowing through the distribution manifolds. (28, 30).</p> |
