×

Sealed housing evaporative determination testing apparatus and method

  • US 5,592,372 A
  • Filed: 02/03/1995
  • Issued: 01/07/1997
  • Est. Priority Date: 02/03/1995
  • Status: Expired due to Term
First Claim
Patent Images

1. An apparatus operable for testing motor vehicle evaporative emissions comprising:

  • a substantially air-tight testing structure operable for enclosing a subject motor vehicle, the testing structure containing a quantity of ambient air;

    environmental control means for controlling temperature of the ambient air within the testing structure;

    sampling means for withdrawing a portion of the ambient air from within the testing structure;

    means for testing the sampled portion of the ambient air;

    means for evacuating a portion of the ambient air contained within the testing structure and for filling a portion of air into the testing structure such that the pressure of the ambient air within the structure remains substantially constant;

    means for testing the evacuated or filled air; and

    means for determining the amount of evaporated emissions.

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