发明名称 |
Valve seat for engine method of manufacturing the valve seat, and cylinder head for engine |
摘要 |
An engine fuel essentially consisting of alcohol may contain a relatively large amount of water in comparison with conventional gasoline and diesel oil, so that when water possibly penetrates into a clearance between an intake valve seat and a mounting reception portion of a cylinder head where the valve seat is to be mounted when the engine fuel essentially consisting of alcohol together with air is introduced into a cylinder through an air inlet having the intake valve seat. As a plating layer 14 is formed on the surface of an iron-based valve seat main body 17 provided at a mounting reception portion 13 formed at an air inlet 6 of a cylinder head 2 made of an aluminum alloy, the plating layer 14 intervenes between the cylinder head 2 and the valve seat main body 17 , so that a potential difference between the dissimilar metals for the mounting reception portion 13 and the valve seat main body 17 is reduced through water, thereby preventing galvanic corrosion.
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申请公布号 |
US2007101964(A1) |
申请公布日期 |
2007.05.10 |
申请号 |
US20040572887 |
申请日期 |
2004.09.30 |
申请人 |
MITSUBISHI MATERIALS PMG CORPORATION |
发明人 |
MORIMOTO KOICHIRO;HANADA KUNIO;NISHIDA TAKASHI;SAKAI TOMOHIRO |
分类号 |
F02N3/00;B22F3/24;B22F5/00;F01L3/02;F01L3/04;F02F1/24 |
主分类号 |
F02N3/00 |
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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