Invention Grant
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
- Patent Title: NOx emission control for a controlled auto-ignition four-stroke internal combustion engine
- Patent Title (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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Application No.: US11172505Application Date: 2005-06-30
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Publication No.: US07228839B2Publication Date: 2007-06-12
- Inventor: Tang-Wei Kuo , Paul M. Najt , James A. Eng , Barry L. Brown , Chen-Fang Chang , Jun-Mo Kang
- Applicant: Tang-Wei Kuo , Paul M. Najt , James A. Eng , Barry L. Brown , Chen-Fang Chang , Jun-Mo Kang
- Applicant Address: US MI Detroit
- Assignee: GM Global Technology Operations, Inc.
- Current Assignee: GM Global Technology Operations, Inc.
- Current Assignee Address: US MI Detroit
- Agent Kathryn A. Marra
- Main IPC: F01L1/34
- IPC: F01L1/34 ; F02B3/00 ; F02M25/07
Abstract:
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.
Public/Granted literature
- US20060016417A1 NOx emission control for a controlled auto-ignition four-stroke internal combustion engine Public/Granted day:2006-01-26
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