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Method of analyzing vehicle emissions and in-flight gas analysis apparatus

  • US 5,099,680 A
  • Filed: 05/03/1990
  • Issued: 03/31/1992
  • Est. Priority Date: 05/03/1990
  • Status: Expired due to Term
First Claim
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1. A method of measuring the gas emissions of a vehicle comprising the steps of:

  • providing a gas analyzer adapted to measuring the concentration of gases of interest;

    providing a transducer for monitoring at least one parameter related to the operating condition of the vehicle;

    supplying samples of the gas emissions of the vehicle to said gas analyzer;

    operating the vehicle while monitoring said transducer and said gas analyzer;

    retaining a running history of the concentration of gases provided by said gas analyzer and the values of the operating conditions of the vehicle; and

    preserving said running history upon the occurrence of a preselected event.

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