Variable geometry turbine and turbocharger,申请号EP20080020601-传众专利搜索

Variable geometry turbine and turbocharger

申请公布号：EP2096264(B1)

申请号：EP20080020601

申请日期：2008.11.27

申请公布日期：2015.07.22

申请人：

MITSUBISHI HEAVY INDUSTRIES, LTD.

发明人：MATSUO, ATSUSHI;YOKOYAMA, TAKAO;EBISU, MOTOKI

分类号：F01D9/02;F01D17/14;F02B37/22;F02C6/12

主分类号：F01D9/02

摘要：<p>A turbine (5) is provided which can reduce variations in mass flow at throats even when the flow rate of fluid is low or high, to prevent a decrease in performance. A turbine (5) includes a turbine rotor (80) which has turbine blades (82); a turbine housing (60) which accommodates the turbine rotor (80) and whose cross-sectional area of a scroll portion (100) formed between the turbine housing (60) and the turbine rotor (80) gradually decreases; a plurality of fixed vanes (102) which are fixed along a curved line dividing the scroll portion (100) into an inner scroll part (66) and an outer scroll part (68); throats (101) which are formed between the adjacent fixed vanes (102) and communicate between the inner scroll part (66) and the outer scroll part (68); and a switch valve (90) which switches a flow path in the turbine housing (60) either to the inner scroll part (66) or to both the inner scroll part (66) and the outer scroll part (68), in which flow path areas of the throats (101) are reduced in a downstream direction of the scroll portion (100).</p>