Exhaust gas purification device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Apr 15, 2003
Grant Date -
Oct 25, 2001
app pub date -
Apr 16, 2001
filing date -
Apr 18, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An engine comprising a particulate filter which is arranged in the exhaust passage and has a function of absorbing NO.sub.x, where the amount of discharged particulate discharged from the combustion chamber per unit time is made smaller than the amount of particulate removable by oxidation per unit time without emitting a luminous flame on the particulate filter and where the temperature of the particulate filter is maintained in a temperature range where the NO.sub.x absorption rate becomes more than a certain value.
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