发明名称 |
Method and system for controlling engine |
摘要 |
When refreshing a catalyst (22) disposed in an exhaust line (20) during operation of a diesel engine (1), diesel engine control increases supercharging pressure by throttling nozzles of a turbocharger (25) so as to increase an amount of air that is charged into a combustion chamber (4) and then opens an exhaust gas recirculation valve (24) and holds it open until a exhaust gas recirculation ratio reaches a specified value. Subsequently, the diesel engine control increases an amount of fuel injection until a mean combustion chamber air-to-fuel ratio reaches a value near a stoichiometric air-to-fuel ratio so as to lower the oxygen concentration of exhaust gas, thereby causing the catalyst (22) to release NOx therefrom and purify the exhaust gas.
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申请公布号 |
US6354269(B1) |
申请公布日期 |
2002.03.12 |
申请号 |
US20000670695 |
申请日期 |
2000.09.28 |
申请人 |
MAZDA MOTOR CORPORATION |
发明人 |
SAITO TOMOAKI;YASUTOMI KATSUAKI;SEINO YUSUKE;KOBAYASHI AKIHIRO |
分类号 |
F02M25/07;F01N3/08;F02D21/08;F02D41/02;F02D41/14;F02D41/22;F02D41/38;F02D41/40;F02D43/00;(IPC1-7):F02D41/22 |
主分类号 |
F02M25/07 |
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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