| 摘要 |
In an excessive burn detection method for detecting an excessive burn during a regeneration process, in which particulates accumulated in a particulate filter arranged in an exhaust passage of a diesel engine are burned and removed for regenerating the particulate filter, an oxygen concentration in exhaust gas in the exhaust passage downstream of the particulate filter is measured in predetermined time intervals after the regeneration process starts and it is determined whether the excessive burn occurs by determining whether the measured oxygen concentration decreases with a predetermined tendency.
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