发明名称 |
EXHAUST PURIFICATION SYSTEM OF INTERNAL COMBUSTION ENGINE |
摘要 |
In an internal combustion engine, inside an engine exhaust passage, a hydrocarbon feed valve (15) and an exhaust purification catalyst (13) are arranged. A first hydrocarbon feed method which injections hydrocarbons from the hydrocarbon feed valve (15) by predetermined feed intervals (DeltaT) so that the air-fuel ratio of the exhaust gas falls to the demanded minimum air-fuel ratio (X) to thereby remove the NOx contained in the exhaust gas and a second hydrocarbon feed method which lowers the feed amount of hydrocarbons from the hydrocarbon feed valve (15) and feeds fuel to the combustion chambers (2) during a second half of the expansion stroke or the exhaust stroke are selectively used.
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申请公布号 |
US2013149198(A1) |
申请公布日期 |
2013.06.13 |
申请号 |
US201013262442 |
申请日期 |
2010.09.02 |
申请人 |
UMEMOTO KAZUHIRO;YOSHIDA KOHEI;INOUE MIKIO;TOYOTA JIDOSHA KABUSHIKI KAISHA |
发明人 |
UMEMOTO KAZUHIRO;YOSHIDA KOHEI;INOUE MIKIO |
分类号 |
B01D53/94 |
主分类号 |
B01D53/94 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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