发明名称 |
CARBON-CARBON COMPOSITE VALVE FOR HIGH PERFORMANCE INTERNAL COMBUSTION ENGINES |
摘要 |
<p>The present invention provides a carbon-carbon (C/C) composite valve structure useful for high temperature internal combustion engines comprising (a) a carbon-carbon (C/C) composite valve stem having a flared end and a non-flared end opposite the flared end; and (b) a carbon-carbon (C/C) composite valve head applied onto the flared end of the valve stem, wherein at least one of the carbon-carbon (C/C) composite valve stem and head is coated with a high temperature resistant coating. A method is further provided to fabricate the carbon-carbon (C/C) composite valve comprising machining a carbon-carbon (C/C) composite valve stem having a flared end and a non-flared end from a cured and densified carbon-carbon (C/C) plate having a sufficient thickness; applying a plurality of circular fabric plies, made from a balanced carbon-carbon (C/C) prepreg and having a slit in the center of said ply, coaxially onto the non-flared end of said carbon-carbon (C/C) valve stem and advancing said plurality of plies to intimately contact the flared end of said carbon-carbon (C/C) valve stem; placing said carbon-carbon (C/C) valve stem contacted with said plurality of circular fabric plies into a die; closing said die and cure pressing said circular fabric plies onto the flared end of said carbon-carbon (C/C) valve stem to form a valve head; carbonizing said press cured carbon-carbon (C/C) composite valve; densifying said carbon-carbon (C/C) composite valve structure; and coating at least one of said carbon-carbon (C/C) composite valve stem and valve head with a high temperature resistant coating comprising an inner layer and an outer layer.</p> |
申请公布号 |
EP1137867(A4) |
申请公布日期 |
2004.10.20 |
申请号 |
EP19990960477 |
申请日期 |
1999.11.18 |
申请人 |
HITCO CARBON COMPOSITES, INC. |
发明人 |
WILSON, DOUG;LEE, SAM;MATHUR, RAJ |
分类号 |
C04B35/83;C04B41/52;C04B41/89;C04B41/90;F01L3/02;F01L3/04;(IPC1-7):F01L3/00;C04B41/51;C04B41/50 |
主分类号 |
C04B35/83 |
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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