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Fuel-vapor emission control apparatus for engine

  • US 5,735,251 A
  • Filed: 05/14/1997
  • Issued: 04/07/1998
  • Est. Priority Date: 05/15/1996
  • Status: Expired due to Term
First Claim
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1. A fuel-vapor emission control apparatus mounted on a vehicle having an internal combustion engine and a fuel tank, wherein said engine has a cylinder and is supported by mounting means, and wherein said fuel-vapor emission control apparatus purges fuel-vapor from said fuel tank and supplies the purged fuel-vapor to said engine, said fuel-vapor emission control apparatus comprising:

  • a purge control valve for controlling the amount of purged fuel-vapor that is supplied to said engine,an operating state detector for detecting the operating state of said engine,a valve controller for subjecting said purge control valve to duty control in accordance with data from said operating state detector, andsuppressing means for suppressing resonance of said engine and said mounting means when purged fuel-vapor is being supplied to said engine.

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