发明名称 |
METHOD AND APPARATUS FOR CONTROLLING OPERATION OF A SPARK-IGNITION DIRECT-INJECTION ENGINE |
摘要 |
Operation of a spark ignition, direct injection engine having an aftertreatment system including an oxidation catalyst and a selective catalyst reduction device is described. The method includes controlling to a stoichiometric air/fuel ratio and retarding spark ignition timing. Engine fueling is then controlled to a lean air/fuel ratio and spark is retarded. The engine is then operated to generate ammonia reductant. Engine operation then comprises operating at a preferred air/fuel ratio and controlling spark ignition timing to a preferred timing. |
申请公布号 |
US2010139248(A1) |
申请公布日期 |
2010.06.10 |
申请号 |
US20080330587 |
申请日期 |
2008.12.09 |
申请人 |
GM GLOBAL TECHNOLOGY OPERATIONS, INC. |
发明人 |
NAJT PAUL M.;NARAYANASWAMY KUSHAL;PERRY KEVIN L.;LI WEI;CLEARY DAVID J.;SMITH JAMES DONALD |
分类号 |
F01N9/00 |
主分类号 |
F01N9/00 |
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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