发明名称 |
TURBOCHARGER WITH VARIABLE NOZZLE HAVING VANE SEALING SURFACES |
摘要 |
A variable nozzle for a turbocharger includes a plurality of vanes rotatably mounted on a nozzle ring and disposed in a nozzle flow path defined between the nozzle ring and an opposite nozzle wall. Either or both of the faces of the nozzle ring and nozzle wall include(s) at least one step that defines sealing surfaces positioned to be substantially abutted by airfoil surfaces of the vanes in the closed position of the vanes and to be spaced from the airfoil surfaces in positions other than the closed position. This substantial abutment between the airfoil surfaces and the sealing surfaces serves to substantially prevent exhaust gas from leaking past the ends of the airfoil portions. At the same time, clearances between the nozzle ring face and the end faces of the airfoil portions can be sufficiently large to prevent binding of the vanes under all operating conditions.
|
申请公布号 |
US2009272112(A1) |
申请公布日期 |
2009.11.05 |
申请号 |
US20080115245 |
申请日期 |
2008.05.05 |
申请人 |
ARNOLD PHILIPPE;PETITJEAN DOMINIQUE;RUQUART ANTHONY;DUPONT GUILLEURNE;JECKEL DENIS |
发明人 |
ARNOLD PHILIPPE;PETITJEAN DOMINIQUE;RUQUART ANTHONY;DUPONT GUILLEURNE;JECKEL DENIS |
分类号 |
F02B37/24;F01D17/16 |
主分类号 |
F02B37/24 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|