发明名称 |
Air-cooled four-stroke internal combustion engine |
摘要 |
The present invention provides an air-cooled four-stroke internal combustion engine capable of achieving a high degree of cooling. The present invention is directed to an air-cooled four-stroke internal combustion engine including a crankshaft and a fan rotor rotatably driven by the crankshaft to generate cooling air for cooling the engine. The engine comprises an oil pan disposed below the crankshaft. A space formed below the oil pan extends in the axial direction of the crankshaft along the lower surface of the oil pan and allows a cooling air to pass therethrough. An upstream portion of the lower surface is inclined upward, toward the upstream, in a vertical section taken along the axis of the crankshaft to receive the cooling air therein.
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申请公布号 |
US6925970(B2) |
申请公布日期 |
2005.08.09 |
申请号 |
US20040828294 |
申请日期 |
2004.04.21 |
申请人 |
KIORITZ CORPORATION |
发明人 |
LIU YUMIN;SAWADATE YUKIO;IIZUKA MASAHIKO;NAGAO YOSHIAKI |
分类号 |
F02B63/00;F01M5/00;F01M11/00;F01P1/02;F01P1/06;F01P5/06;F02B63/02;F02B75/02;F02B75/16;F02F1/04;F02F1/28;F02F7/00;F02F11/00;(IPC1-7):F02F7/00;F02F1/06 |
主分类号 |
F02B63/00 |
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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