发明授权
US07228839B2 NOx emission control for a controlled auto-ignition four-stroke internal combustion engine
有权
用于受控自动点火四冲程内燃机的NOx排放控制
- 专利标题： NOx emission control for a controlled auto-ignition four-stroke internal combustion engine
- 专利标题（中）： 用于受控自动点火四冲程内燃机的NOx排放控制
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申请号： US11172505申请日： 2005-06-30
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公开(公告)号： US07228839B2公开(公告)日： 2007-06-12
- 发明人: Tang-Wei Kuo , Paul M. Najt , James A. Eng , Barry L. Brown , Chen-Fang Chang , Jun-Mo Kang
- 申请人： Tang-Wei Kuo , Paul M. Najt , James A. Eng , Barry L. Brown , Chen-Fang Chang , Jun-Mo Kang
- 申请人地址： US MI Detroit
- 专利权人： GM Global Technology Operations, Inc.
- 当前专利权人： GM Global Technology Operations, Inc.
- 当前专利权人地址： US MI Detroit
- 代理商 Kathryn A. Marra
- 主分类号： F01L1/34
- IPC分类号： F01L1/34 ; F02B3/00 ; F02M25/07
摘要：
A four-stroke internal combustion engine is operated in controlled auto-ignition mode by any of a variety of valve control strategies conducive to controlled auto-ignition conditions in conjunction with in-cylinder fuel charges that are at either stoichiometric or lean of stoichiometric air-fuel ratios. A measure of engine NOx emission is provided and when it crosses a predetermined threshold, the in-cylinder fuel charge is transitioned from the operative one of the stoichiometric or lean of stoichiometric air-fuel ratios to the inoperative one of the stoichiometric or lean of stoichiometric air-fuel ratios.
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