Exhaust emission purification system for diesel engine
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United States of America Patent
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Nov 30, 2004
Grant Date -
Jun 19, 2003
app pub date -
Dec 5, 2002
filing date -
Dec 13, 2001
priority date (Note) -
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Abstract
A first exhaust emission purification device first and a second exhaust emission purification device, each have a continuously regenerating type DPF and an SCR catalyst to constitute exhaust emission purification system for a diesel engine. When the exhaust gas temperature is within a low-temperature region lower than a predetermined temperature region, the exhaust gas temperature is raised.
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