发明授权
US07363901B2 Engine valve, method of manufacturing same, and cylinder head incorporating same
有权
发动机阀门及其制造方法,以及并入其的气缸盖
- 专利标题: Engine valve, method of manufacturing same, and cylinder head incorporating same
- 专利标题(中): 发动机阀门及其制造方法,以及并入其的气缸盖
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申请号: US11515704申请日: 2006-09-05
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公开(公告)号: US07363901B2公开(公告)日: 2008-04-29
- 发明人: Yuji Marui , Naoya Okamoto
- 申请人: Yuji Marui , Naoya Okamoto
- 申请人地址: JP Tokyo
- 专利权人: Honda Motor Co., Ltd.
- 当前专利权人: Honda Motor Co., Ltd.
- 当前专利权人地址: JP Tokyo
- 代理机构: Carrier, Blackman + Associates, P.C.
- 代理商 William D. Blackman; Joseph P. Carrier
- 优先权: JP2005-279441 20050927
- 主分类号: F02N3/00
- IPC分类号: F02N3/00 ; F02F1/00
摘要:
An engine valve, formed of a titanium alloy, enables improvement of reliability and productivity while improving creep resistance and fatigue strength at a high temperature. The engine valve, including a stem section and a bevel section provided at one end of the stem section, is integrally formed of the titanium alloy. A portion of the valve, extending from the bevel section to a medial portion of the valve stem, is formed mainly of a needle-like crystallographic texture. Another portion of the valve, extending from the medial section to the other end of the stem section, is formed of a material having a substantially equiaxed crystallographic texture. A boundary between the needle-like texture and the equiaxed texture is provided in a range of sliding movement of the valve relative to a valve guide that slidably guides the stem section within the cylinder head.
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