发明名称 |
Engine block crankshaft bearings |
摘要 |
An internal combustion engine comprises an aluminum alloy engine block housing pistons in cylinders and having a lower face including an upper semi-circular bearing surface. A lower bearing support has a lower semi-circular bearing surface to complement the upper semi-circular bearing surface in the engine block to define a crankshaft bore to rotatably support an iron alloy crankshaft. The lower bearing support is formed of a single aluminum-silicon alloy having a coefficient of thermal expansion comparable to the iron alloy crankshaft to promote a consistent clearance between the lower bearing support and the crankshaft. Such an aluminum-silicon alloy is comprised of approximately 33-35% by weight silicon and the balance is aluminum.
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申请公布号 |
US6715458(B1) |
申请公布日期 |
2004.04.06 |
申请号 |
US20000709819 |
申请日期 |
2000.08.03 |
申请人 |
GENERAL MOTORS CORPORATION |
发明人 |
TAPPEN GRANT K. |
分类号 |
F02B75/18;F02F7/00;F16C9/02;(IPC1-7):F02F7/00 |
主分类号 |
F02B75/18 |
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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