Borgwarner Inc.

Davide Peduto

Erwin Perry Ellwood, Iii

Aliihsan Karamavruc

Thomas Körner

Ivo Daniel

Thomas Dücker-Schulz

A turbocharger for an internal combustion engine, comprises a housing (2) with a compressor blade (3) on the air side, a shaft (1) driving the compressor blade (3), and at least one radially acting rotary bearing (5) for mounting the shaft (3), wherein the rotary bearing (5) is designed as a hydrodynamic sliding bearing, wherein a stationary bearing element (6) is penetrated by the shaft (1) and a first mounting is formed on one first side of the bearing element (6) and acts axially against a bearing collar (7) rotating with the shaft, wherein an oil supply (9) for supplying the mountings is designed in the bearing element (6), wherein a plurality of flow surfaces (10) with a height (h) varying in the circumferential direction is formed on one surface of the bearing element (6) facing the bearing collar (7) in the axial direction, wherein an individually dimensioned throttle element (11, 12) is designed in the oil supply (9) for each of the two mountings.

Turbocharger for an internal combustion engine

An engine turbocharger () includes a radially oriented oil deflector () that incorporates an oil guiding feature () to improve control of a continuous turbulent mass of oil being impelled against the deflector by an oil flinger (). The oil deflector () has a downwardly extending tongue () to assist in directing oil flow from a thrust bearing chamber. The feature (), formed on the tongue (), enhances otherwise gravitationally directed oil flow into an engine oil sump. The feature is vertically oriented, and redirects oil thrown axially and rotationally against the deflector, providing improved piston ring sealing through more efficient evacuation of oil from the thrust bearing chamber. The feature may be formed by stamping, as either an integral disruptive surface rib, or as an otherwise radially oriented flange protruding axially from the surface of the tongue. Such flange may be integral with, or otherwise attached to, the oil deflector tongue, as for example via welding.

Growing community of inventors

Mannheim, Germany

Davide Peduto