发明名称 |
Exhaust purification system of internal combustion engine |
摘要 |
An electronic control unit executing an algorithm so as to operate an exhaust purification system of an engine. The algorithm (1) commences a regeneration treatment by causing an amount of fuel supplied to a combustion process of the engine to increase so as to change an air-fuel ratio of exhaust gas of the engine from a first lean air-fuel ratio to a set rich air-fuel ratio and (2) causes uncombusted fuel to be supplied to a NOx catalyst device during at least one of: a first period in which an air-fuel ratio of the exhaust gas within the NOx catalyst device changes from the first lean air-fuel ratio to the set rich air-fuel ratio when the regeneration treatment is started; and a second period after an air-fuel ratio of the exhaust gas within the NOx catalyst device becomes a ratio indicating completion of the regeneration treatment. |
申请公布号 |
US8434297(B2) |
申请公布日期 |
2013.05.07 |
申请号 |
US20090673888 |
申请日期 |
2009.06.15 |
申请人 |
ASANUMA TAKAMITSU;YOSHIDA KOHEI;NISHIOKA HIROMASA;IMAI DAICHI;UMEMOTO KAZUHIRO;TOYOTA JIDOSHA KABUSHIKI KAISHA |
发明人 |
ASANUMA TAKAMITSU;YOSHIDA KOHEI;NISHIOKA HIROMASA;IMAI DAICHI;UMEMOTO KAZUHIRO |
分类号 |
F01N3/10;F01N3/20 |
主分类号 |
F01N3/10 |
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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