04160373 is referenced by 45 patents and cites 13 patents.

The contaminants in the exhaust gas emissions from a motor vehicle such as carbon monoxide (CO) and hydrocarbons (HC) are analyzed within a nondispersive infrared analyzer which includes means for assuring that the vehicle being tested has achieved a predetermined engine speed and that no blockage has occurred in the gas transport system when the measurements are made.

Title
Vehicle exhaust gas analysis system with gas blockage interlock
Application Number
534494
Publication Number
4160373
Application Date
February 27, 1978
Publication Date
July 10, 1979
Inventor
Thomas A Cross
Winsted
CT, US
Anthony J Fastaia
Vernon
CT, US
Agent
Donald F Bradley
Assignee
United Technologies Corporation
CT, US
IPC
G01N 21/26
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