Failure diagnosing device for exhaust gas purifying apparatus

Details Failure diagnosing device for exhaust gas purifying apparatus Failure diagnosing device for exhaust gas purifying apparatus

1998-09-11

2000-12-12

Denion, Thomas

Power plants

Internal combustion engine with treatment or handling of...

Having sensor or indicator of malfunction, unsafeness, or...

60287, 60284, 60297, F01N 300

Patent

active

061582123

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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