发明授权
US07742868B2 Method and apparatus for controlling fuel reforming under low-load operating conditions using exhaust recompression in a homogeneous charge compression ignition engine
有权
在均质充气压缩点火发动机中使用排气再压缩来控制在低负载运行条件下的燃料重整的方法和装置
- 专利标题： Method and apparatus for controlling fuel reforming under low-load operating conditions using exhaust recompression in a homogeneous charge compression ignition engine
- 专利标题（中）： 在均质充气压缩点火发动机中使用排气再压缩来控制在低负载运行条件下的燃料重整的方法和装置
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申请号： US12045295申请日： 2008-03-10
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公开(公告)号： US07742868B2公开(公告)日： 2010-06-22
- 发明人: Jun-Mo Kang , Chen-Fang Chang , Tang-Wei Kuo
- 申请人： Jun-Mo Kang , Chen-Fang Chang , Tang-Wei Kuo
- 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
- 主分类号： G06F19/00
- IPC分类号： G06F19/00 ; F02M51/00 ; F02M25/07 ; F01L1/34 ; F02D41/14
摘要：
A direct injection spark ignition multi-cylinder internal combustion engine operative in a controlled auto-ignition combustion mode includes a direct fuel injection system, a spark ignition system and a controllable engine valve system. The air/fuel ratio in the exhaust gas feedstream and an intake mass air flow are measured and an actual air/fuel ratio is calculated based upon the intake mass air flow and engine fueling. Magnitude of a negative valve overlap period between an exhaust valve closing and an intake valve opening is adjusted based upon the measured mass air flow. Timing of pre-injection fueling is adjusted during the negative valve overlap period based upon the measured air/fuel ratio.
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