公开(公告)号：US20160356179A1

公开(公告)日：2016-12-08

申请号：US15121452

申请日：2015-02-26

Applicant: VOLVO TRUCK CORPORATION

Inventor： PETER TENNEVALL ,  Daniel BLOM ,  Niklas HARTLER

IPC: F01D25/18 ,  F01D11/02 ,  F02B41/10

CPC classification number: F01D25/183 ,  F01D11/02 ,  F02B41/10 ,  F05D2220/40 ,  F05D2240/50 ,  F05D2240/55 ,  F05D2240/60 ,  F05D2250/38 ,  F05D2260/6022 ,  Y02T10/163

Abstract: A turbocompound unit includes a bearing housing and a turbine shaft being rotatably supported in the bearing housing, wherein one end of the turbine shaft is provided with a turbine wheel. The turbocompound unit further includes a diffuser duct in which the turbine wheel is arranged to rotate, an exhaust collector extending from the diffuser duct to an exhaust outlet, and a sealing arrangement positioned in the vicinity of the turbine wheel fir preventing oil from escaping from the bearing housing to the diffuser duct. The exhaust collector forms part of a butler gas duct that is arranged to supply exhaust gas from the exhaust collector to the sealing arrangement for pressurizing the sealing arrangement.

Abstract translation: 涡轮组合单元包括轴承壳体和涡轮轴，其可旋转地支撑在轴承壳体中，其中涡轮轴的一端设置有涡轮机叶轮。 涡轮组合装置还包括一个扩散器管道，其中涡轮机轮被设置成旋转，从扩散器管道延伸到排气出口的排气收集器和位于涡轮机叶轮附近的密封装置，防止油从 轴承壳体到扩散器管道。 排气收集器形成管状气体管道的一部分，其布置成将废气从排气收集器供应到用于对密封装置加压的密封装置。