Carbon dioxide sensor for controlling exhaust gas recirculation in diesel engines
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United States of America Patent
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Sep 9, 2003
Grant Date -
Oct 31, 2002
app pub date -
Apr 27, 2001
filing date -
Apr 27, 2001
priority date (Note) -
Expired
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Abstract
A method of measuring a rate of change of carbon dioxide concentration in recirculated air of an engine, is disclosed. The method includes installing a conductive sample tube into an engine's pre-combustion/air-mixing chamber, and installing a carbon dioxide sensor, remote from the chamber, to measure relative concentrations of carbon dioxide. The method may also be used to measure nitrogen oxide exhaust gas levels.
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