Failure diagnosing device for exhaust gas purifying apparatus
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United States of America Patent
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-
Dec 12, 2000
Grant Date -
N/A
app pub date -
Sep 11, 1998
filing date -
Sep 19, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A failure judging device of the present invention is a device for diagnosing a failure of an exhaust purifying apparatus having a purifying catalyst for purifying an exhaust gas discharged from an internal combustion engine, and an adsorbing member for adsorbing an unburned gas component in the exhaust gas. The failure judging device judges a failure on the basis of temperatures of the adsorbing member and the purifying catalyst when oxidating reaction of the unburned gas component occurs in the adsorbing member or the purifying catalyst, i.e., a change in temperature of the adsorbing member or the purifying catalyst distinctly appears.
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