CPC B60S 3/04 (2013.01) [F16K 31/0675 (2013.01)] | 18 Claims |
1. A vehicle wash for washing a vehicle, comprising:
a first pump fluidly connected to a first product supply and a second pump fluidly connected to a second product supply, wherein the first product supply is comprised of a liquid, a powder, a particulate material, a gas, a fluid, or a combination thereof, and wherein the second product supply is comprised of a liquid;
an first electronic control valve fluidly connected to the first pump, wherein the first electronic control valve operates at a first open/close ratio that dispenses the first product supply at a first flow rate, wherein the first open/close ratio is comprised of an on state for an on period of time and an off state for an off period of time, and wherein the first open/close ratio produces a first flow rate of the first product supply;
a second electronic control valve fluidly connected to the second pump, wherein the second electronic control valve operates at a second open/close ratio that dispenses the second product supply at a second flow rate, wherein the second open/close ratio is comprised of an on state for an on period of time and an off state for an off period of time, and wherein the second open/close ratio produces a second flow rate of the second product supply;
a nozzle fluidly connected to the first electronic control valve and the second electronic control valve to dispense the first product supply and the second product supply to the vehicle; and
a control unit in communication with the first electronic control valve and the second electronic control valve, the control unit is programmed to control the first open/close ratio and the second open/close ratio, wherein the control unit calculates the first open/close ratio needed to produce the first flow rate of the first product supply utilizing a pressure of the first product supply from the first pump, and wherein the control unit calculates the second open/close ratio needed to produce the second flow rate of the second product supply utilizing a pressure of the second product supply from the second pump.
|