×

Product metering system

  • US 9,932,018 B2
  • Filed: 06/12/2017
  • Issued: 04/03/2018
  • Est. Priority Date: 09/03/2008
  • Status: Active Grant
First Claim
Patent Images

1. A method of operating a vehicle wash, comprising:

  • positioning a vehicle within a vehicle wash, wherein the vehicle wash is comprised of;

    a first pump fluidly connected to a product supply, wherein the product supply is comprised of a liquid;

    an electronic control valve fluidly connected to the first pump, wherein the electronic control valve operates at an open/close ratio that dispenses the product supply at a flow rate, wherein the 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 open/close ratio produces a consistent flow rate of the product supply;

    a nozzle fluidly connected to the electronic control valve to dispense the product supply to the vehicle; and

    a control unit in communication with the electronic control valve, the control unit programmed to control the open/close ratio, wherein the control unit calculates the open/close ratio needed to produce the flow rate of the product supply utilizing a pressure of the product supply from the first pump;

    calculating by the control unit the open/close ratio needed to produce the flow rate of the product supply utilizing the pressure of the product supply from the first pump;

    operating the electronic control valve at the open/close ratio to produce the consistent flow rate of the product supply; and

    dispensing the product supply by the nozzle to the vehicle at the flow rate.

View all claims
  • 7 Assignments
Timeline View
Assignment View
    ×
    ×