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System for vehicle emission sampling and measurement

  • US 6,516,656 B1
  • Filed: 12/28/1999
  • Issued: 02/11/2003
  • Est. Priority Date: 12/28/1999
  • Status: Expired due to Fees
First Claim
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1. An emissions measurement system for a vehicle having an emissions source, comprising:

  • a first intake coupled to said emission source to collect vehicle emission gases therefrom;

    a second intake coupled to a portion of said vehicle spaced from said emission source to collect ambient air;

    a first analyzer disposed in said vehicle and coupled to said first intake, said first analyzer providing a first electrical signal corresponding to chemical content of said vehicle emission gases;

    a second analyzer disposed in said vehicle and coupled to said second intake, said second analyzer providing a second electrical signal corresponding to chemical content of said ambient air; and

    a processor coupled to said first and second analyzers, said processor being adapted to process said first and second electrical signals and provide data corresponding to a comparison of said vehicle emission gases to said ambient air.

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