发明名称 |
Cylinder head and method |
摘要 |
A cylinder head is formed by positioning a clad preform including a first and second layer in a casting die cavity with the second layer in communication with the die cavity and the first layer facing outwardly to define a combustion surface. Molten material provided to the die cavity is solidified to form a cast portion metallurgically bonded to the second layer. An aperture of the preform forms a port in fluid communication with a passage of the cast portion. A plurality of dome-shaped preforms may define the combustion chambers of a cylinder head formed by the method. The preform may define a cylinder head face. The first layer may be a steel-based layer, and the second layer and cast portion may be aluminum-based, such that the first layer and combustion surface has higher thermal fatigue strength relative to the cast portion. |
申请公布号 |
US8672018(B2) |
申请公布日期 |
2014.03.18 |
申请号 |
US201213589216 |
申请日期 |
2012.08.20 |
申请人 |
HESS DEVIN R.;JOHNSON GERALD F.;GM GLOBAL TECHNOLOGY OPERATIONS LLC |
发明人 |
HESS DEVIN R.;JOHNSON GERALD F. |
分类号 |
B22D19/00;B22D19/16;F02B75/08 |
主分类号 |
B22D19/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|