发明授权
US6029623A NO.sub.x reductant generation in a compression-ignition engine by
hydrocarbon injection during the expansion stroke
失效
在膨胀冲程期间通过烃注入在压缩点火发动机中产生NO x还原剂
- 专利标题： NO.sub.x reductant generation in a compression-ignition engine by hydrocarbon injection during the expansion stroke
- 专利标题（中）： 在膨胀冲程期间通过烃注入在压缩点火发动机中产生NO x还原剂
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申请号： US988417申请日： 1997-12-10
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公开(公告)号： US6029623A公开(公告)日： 2000-02-29
- 发明人: Walter Weissman , Frank Hershkowitz , Anthony Marion Dean , Harry Stuard Pink
- 申请人： Walter Weissman , Frank Hershkowitz , Anthony Marion Dean , Harry Stuard Pink
- 申请人地址： NJ Florham Park
- 专利权人： Exxon Research and Engineering Co.
- 当前专利权人： Exxon Research and Engineering Co.
- 当前专利权人地址： NJ Florham Park
- 主分类号： F02B3/06
- IPC分类号： F02B3/06 ; F02B23/06 ; F02D41/38 ; F02D41/40 ; F02F1/24 ; F02F1/38 ; F02M45/02 ; F02B3/00
摘要：
The invention relates to a method for producing NO.sub.x reductants by injecting hydrocarbon into a diesel engine's combustion chamber during the expansion cycle. The secondary injected hydrocarbon is formed, under appropriate conditions, into oxygenates and olefins that are suitable for reducing NO.sub.x species in the presence of conventional exhaust catalysts. The appropriate injection timing is obtained by referring to a calibration obtained by direct engine measurements.
公开/授权文献
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