Vehicle exhaust gas analysis system with gas blockage interlock

Details Vehicle exhaust gas analysis system with gas blockage interlock Vehicle exhaust gas analysis system with gas blockage interlock

1978-02-27

1979-07-10

Kreitman, Stephen A.

Measuring and testing

Gas analysis

Gas chromatography

340608, G01N 2126

Patent

active

041603737

ABSTRACT:
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.

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patent: 3860344 (1975-01-01), Garfunkel
patent: 3938377 (1976-02-01), Converse

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