发明名称 |
TWO CYCLE DIESEL ENGINE |
摘要 |
A diesel engine operating on the two cycle crankcase compression principle and having a means for reducing nitrous oxide emissions under low and medium range speeds. This is done by throttling the scavenge air flow which can be accomplished either by throttling the air admitted to the crankcase chamber or bypassing a portion of the compressed air from the crankcase chamber back to the induction system. In addition, an exhaust control valve is provided for raising the compression ratio and the injection timing is advanced when the scavenge air is reduced so as to further improve the control of hydrocarbon and carbon monoxide emissions.
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申请公布号 |
US5178104(A) |
申请公布日期 |
1993.01.12 |
申请号 |
US19900590002 |
申请日期 |
1990.09.28 |
申请人 |
YAMAHA HATSUDOKI KABUSHIKI KAISHA |
发明人 |
ITO, HIDEAKI;MIYAMOTO, MASANORI |
分类号 |
F02B3/06;F02B13/06;F02B29/00;F02B33/04;F02B75/02;F02D1/18;F02D9/02;F02D13/02;F02D41/00;F02D41/40;F02M41/12 |
主分类号 |
F02B3/06 |
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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