US 12,435,646 B1 · Spiral grooved thrust generator on turbine wheel back plate

Abstract

Turbochargers for use in an engine having an internal combustion engine. The design includes, in examples, a shaft having a rotation axis, a turbine housing, a compressor housing, a center housing extending from the turbine housing to the compressor housing with the shaft therethrough, a turbine wheel disposed in the turbine housing and operatively connected to the shaft, and a compressor wheel disposed in the compressor housing and operatively connected to the shaft. A turbine backplate structure is provided having one or more grooves adjacent a back side of the turbine wheel. The turbine backplate structure may be formed on the central housing, or may be a separate backplate installed in the central housing.

Claims20

Dependent claims

A turbocharger comprising:

a shaft having a rotational axis;
a turbine housing;
a compressor housing;
a center housing connecting the turbine housing and compressor housing, with the shaft extending within the center housing;
a turbine wheel disposed in the turbine housing and operatively connected to the shaft;
and
a compressor wheel disposed in the compressor housing and operatively connected to the shaft;
further comprising a turbine backplate structure having one or more grooves adapted to generate an axial force along the rotational axis of the shaft.

5 more elements

Dependencies are inferred from the claim text.

Spiral grooved thrust generator on turbine wheel back plate

Life of this patent

Spiral grooved thrust generator on turbine wheel back plate

Life of this patent

Abstract

Claims20