US 4,907,952 A · Turbocharger

Abstract

A turbocharger comprises a compressor housing, a turbine housing, and a central housing with a shaft rotatably supported therein. The shaft supports on its respective opposite ends a compressor wheel and a turbine wheel that are rotatably disposed in the compressor housing and the turbine housing, respectively. The central housing has a large water jacket near the turbine housing and substantially coextensive therewith for storing cooling water to cool bearings which support the shaft. The turbine housing accommodates a shroud including a vane holder on which fixed and movable vanes are alternately supported for directing exhaust gases to the turbine wheel through variable restrictions. The vane holder or base plate has a radially outer flange and an annular boss which position the shroud axially and radially with respect to the central housing.

Claims15

Dependent claims

A turbocharger comprising:

a compressor housing accommodating a compressor wheel therein;
a turbine housing accommodating a turbine wheel therein, said turbine housing including an annular shroud disposed in surrounding relation to said turbine wheel, said shroud comprised of separate top, base and back plates assembled to cooperate for confining engine exhaust gases around the turbine wheel and with one of said plates having vanes for directing the engine exhaust gases at an outer periphery of the turbine wheel to drive the turbine wheel;
a central housing disposed between and interconnecting said compressor and turbine housings;
a shaft rotatably supported in said central housing by bearings disposed therein, said compressor and turbine wheels being mounted on respective opposite ends of said shaft;
and
positioning means held in interfitting engagement with said shroud and said central housing for positioning said shroud with respect to said central housing.

3 more elements

A turbocharger comprising:

a compressor housing accommodating a compressor wheel therein;
a turbine housing accommodating a turbine wheel therein, said turbine housing including an annular shroud disposed in surrounding relation to said turbine wheel;
a central housing disposed between and interconnecting said compressor and turbine housings;
a shaft rotatably supported in said central housing by bearings disposed therein, said compressor and turbine wheels being mounted on respective opposite ends of said shaft;
positioning means held in interfitting engagement with said shroud and said central housing for positioning said shroud with respect to said central housing;
and
wherein said positioning means comprises a plurality of circumferentially spaced positioning lands radially projecting on one of said shroud and said central housing and held against the other of said shroud and said central housing, said positioning lands defining gaps circumferentially therebetween.

4 more elements

Dependencies are inferred from the claim text.

Turbocharger

Life of this patent

Turbocharger

Life of this patent

Abstract

Claims15