Engine control apparatus and engine operating method
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United States of America Patent
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Mar 30, 2010
Grant Date -
Apr 12, 2007
app pub date -
Sep 13, 2004
filing date -
Oct 22, 2003
priority date (Note) -
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status (Latency Note)
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Abstract
When an abnormality occurred in a SCR device is detected, the output of an engine is restricted. To this end, in one embodiment, at the time of an abnormality occurrence, a map adopted for calculating a fuel injection quantity is switched from that for a normal time (S407). Further, as the abnormality to be detected, the clogging of an injection nozzle, the dilution of urea water stored in a tank, or the like is adopted.
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