发明名称 |
Two-stroke internal combustion engine |
摘要 |
<p>It is intended to effectively prevent blow-by with no need for large changes in typical structures of two-cycle internal combustion engines. A main scavenging passage (24) for supplying air-fuel mixture from a crankcase to a combustion chamber for scavenging purposes has a branch scavenging passage (26) that extends upward aslant toward an intake port (14). The main scavenging passage (24) communicates with a first scavenging port (20) located nearer to an exhaust port (16). The branch scavenging passage (26) communicates with a second scavenging port (22). A mean cross-sectional area of the branch scavenging passage (26) is smaller than that of the main scavenging passage (24). Cross-sectional area of a portion (24b) next to an inlet port (24a) of the main scavenging passage (24) opening to the crankcase is smaller than the sum of cross-sectional areas of the first and second scavenging ports (20, 22).</p> |
申请公布号 |
EP2557293(B1) |
申请公布日期 |
2015.05.13 |
申请号 |
EP20120179132 |
申请日期 |
2012.08.03 |
申请人 |
YAMABIKO CORPORATION |
发明人 |
OTSUJI, TAKAMASA;KOBAYSHI, BUHEI |
分类号 |
F02B25/02;F02B33/04;F02B63/00;F02B63/02;F02F1/22 |
主分类号 |
F02B25/02 |
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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