Measuring and testing – Gas analysis – Gas of combustion
Patent
1991-05-14
1993-06-15
Williams, Hezron E.
Measuring and testing
Gas analysis
Gas of combustion
G01N 122
Patent
active
052188574
ABSTRACT:
An exhaust-gas analyzer, particularly for emissions testing of motor-vehicle engines has a sampling tube into which a mixture of exhaust gas and ambient air is fed through gas lines. A gas feed pump is disposed downstream of the sampling tube with a flowmeter inserted in the air line feeding electrical signals to a computing unit. The unit computes instantaneous standard total flow rate, allowing for gas pressure and temperature.
REFERENCES:
patent: 3603155 (1971-09-01), Morris et al.
patent: 3965749 (1976-06-01), Hadden et al.
patent: 4586367 (1986-05-01), Lewis
Decker Hans-Josef
Horn Horst
Roskos Joseph W.
Siemens Aktiengesellschaft
Williams Hezron E.
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