| 摘要 |
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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