发明名称 |
STEEL PISTON FOR INTERNAL COMBUSTION ENGINES |
摘要 |
<p>A semifinished product blank, suitable for the production of a steel piston (1) for internal combustion engines having cylinder crankcases made of light metal alloys. Such a steel piston (1) has at least one upper piston part (4) which has a combustion recess (2) and an annular wall (3), and a lower piston part (4′) which has a piston skirt (5) and a connecting rod bearing (6). The semifinished product blank is made of an austenitic steel, that is stabilized with Ni, Mn and N and that has a thermal expansion coefficient in a range of 16 to 21×10−6 K−1. Also disclosed is a steel piston, which at least has a piston skirt (5) made of an austenitic steel that is stabilzed with Ni, Mn, N. The piston skirt (5) has a thermal expansion coefficient in a range of 16 to 21×10−6 K−1.</p> |
申请公布号 |
EP2616565(B1) |
申请公布日期 |
2014.12.03 |
申请号 |
EP20110755009 |
申请日期 |
2011.08.30 |
申请人 |
DAIMLER AG |
发明人 |
KAISER, TIMOTHEUS;PFEIFER, HERMANN;REHM, WOLFGANG;WEISSKOPF, KARL |
分类号 |
C22C38/00;C22C38/04;C22C38/06;C22C38/18;C22C38/26;C22C38/34;C22C38/46;F02F3/00;F02F3/02;F16J1/01 |
主分类号 |
C22C38/00 |
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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