发明名称 |
Translating roller lifter design for diesel engines |
摘要 |
A valve lifter assembly for an engine may include a valve lifter body, a roller pin mounted in the valve lifter body and having a crowned barrel portion, and a substantially cylindrical roller mounted about the crowned barrel portion of the roller pin. The roller may have a crowned outer surface with a cylindrical center portion having a constant outer diameter equal to a roller maximum outer diameter, and oppositely disposed variable outer diameter outer portions extending outwardly from either side of the cylindrical center portion toward corresponding roller ends of the roller with a roller outer diameter decreasing as the variable outer diameter outer portions extend outwardly from the cylindrical center portion. The valve lifter assembly may further include a clip having engagement surfaces that are machined to have complimentary shapes to corresponding engagement surfaces of the valve lifter body. |
申请公布号 |
US9556754(B2) |
申请公布日期 |
2017.01.31 |
申请号 |
US201414559591 |
申请日期 |
2014.12.03 |
申请人 |
Caterpillar Inc. |
发明人 |
Hattiangadi Ashwin Ashok;Szmania Terrence Lee;Bush Brenton William |
分类号 |
F01L1/18;F01L1/14 |
主分类号 |
F01L1/18 |
代理机构 |
Leydig, Voit & Mayer, Ltd. |
代理人 |
Leydig, Voit & Mayer, Ltd. |
主权项 |
1. A valve lifter assembly for an engine, comprising:
a valve lifter body; a roller pin mounted in the valve lifter body and having a crowned barrel portion; and a roller substantially cylindrical in shape mounted about the crowned barrel portion of the roller pin, the roller having a crowned outer surface with a cylindrical center portion having a constant outer diameter equal to a roller maximum outer diameter and extending for about a third of a width of the roller, and variable outer diameter outer portions disposed opposite each other and extending outwardly about a third of a width of the roller from either side of the cylindrical center portion toward corresponding roller ends of the roller with a roller outer diameter decreasing as the variable outer diameter outer portions extend outwardly from the cylindrical center portion. |
地址 |
Peoria IL US |