| 发明名称 |
Turbocharger Turbine Assembly |
| 摘要 |
A turbocharger including a turbine housing including a gas inlet passage and a turbine wheel arranged in the turbine housing. A bearing housing is connected to the turbine housing. A nozzle ring is disposed around the turbine wheel and a shroud is arranged in surrounding relation to at least a portion of the turbine wheel. The shroud is connected to the nozzle ring and the nozzle ring and shroud are connected to a heat shield. The heat shield is secured to the bearing housing by a plurality of cross key pins, each cross key pin being inserted in a radially extending first passage in the heat shield and a complementary radially extending second passage in the bearing housing. The first passages and second passages are symmetrically arranged in a circular pattern about a rotational axis of the turbine. |
| 申请公布号 |
US2016265388(A1) |
申请公布日期 |
2016.09.15 |
| 申请号 |
US201514642133 |
申请日期 |
2015.03.09 |
| 申请人 |
Caterpillar Inc. |
发明人 |
Annati Richard E.;Frick Matthew J. |
| 分类号 |
F01D25/26;F01D25/24;F02B39/08;F01D5/02;F02B33/40;F02B37/00;F01D9/04;F01D25/14 |
主分类号 |
F01D25/26 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A turbocharger comprising:
a turbine housing including a gas inlet passage; a turbine wheel that has a plurality of blades and is arranged in the turbine housing; a bearing housing connected to the turbine housing; a shaft rotatably supported in the bearing housing and connected to the turbine wheel; a heat shield; a nozzle ring disposed around the turbine wheel and including a plurality of vanes with flow channels being defined between the vanes that are in fluid communication the gas inlet passage and with the turbine wheel; and a shroud arranged in surrounding relation to at least a portion of the turbine wheel, the shroud being connected to the nozzle ring, the nozzle ring and shroud are connected to the heat shield; wherein the heat shield is secured to the bearing housing by a plurality of cross key pins, each cross key pin being inserted in a radially extending first passage in the heat shield and a complementary radially extending second passage in the bearing housing, the first passages and second passages being symmetrically arranged in a circular pattern about a rotational axis of the turbine wheel such that the cross key pins force symmetrical thermal expansion of the heat shield, nozzle ring and shroud during operation of the turbocharger. |
| 地址 |
Peoria IL US |
