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Two-stage high flow purge valve

  • US 5,083,546 A
  • Filed: 02/19/1991
  • Issued: 01/28/1992
  • Est. Priority Date: 02/19/1991
  • Status: Expired due to Fees
First Claim
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1. A two-stage valve for a vehicle having an internal combustion engine comprising:

  • a valve body defining an inlet port adapted for connection to a source of fluid and an outlet port adapted for connection to a source of vacuum;

    a high flow orifice defining a first flow path through said valve body from said inlet port to said outlet port;

    a low flow orifice defining a second flow path through said valve body from said inlet port to said outlet port in parallel with said first flow path;

    first valve means responsive to the level of vacuum pressure at said outlet port for controlling the fluid flow through said high flow orifice; and

    second valve means comprising a solenoid valve for controlling the fluid flow through said low flow orifice in response to an electrical signal supplied to said solenoid valve.

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