Exhaust emission control device of engine
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United States of America Patent
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-
Feb 21, 2006
Grant Date -
Jun 2, 2005
app pub date -
Nov 12, 2003
filing date -
Nov 13, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An exhaust emission control device comprises a temperature sensor for detecting the temperature of exhaust gas directly on the upper-stream side of a diesel particulate filter. An ECU adjusts a compulsive regeneration interval in accordance with a cumulative history of cases in which the exhaust gas temperature detected by means of the temperature sensor continues to be not lower than a value equivalent to a continuous regeneration temperature. The compulsive regeneration interval is adjusted by means of the ECU in accordance with a history of circumstances in which a state for continuous regeneration is realized.
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