Turbocharger for internal combustion engine

Details Turbocharger for internal combustion engine Turbocharger for internal combustion engine

1985-06-10

1987-11-03

Casaregola, Louis J.

Pumps

Motor driven

Fluid motor

416244A, 416241B, 403 30, 403273, F04B 1700

Patent

active

047040742

ABSTRACT:
A turbocharger for an internal combustion engine, in which the turbocharger has a turbine wheel made in one piece from a ceramic material and having an axially extending support portion which is inserted into a hollow shaft made from a metal material. The support portion of the turbine wheel has, at an end remote from the blade portions, a portion having an increased diameter and tightly fitted to the hollow shaft. An axial first annular slit is formed between the shaft and the support portion. A radial second annular slit is formed between facing surfaces of the shaft and the turbine wheel. These first and second slits are connected to each other and work to alleviate the effects of the different heat expansion coefficients of the metal and ceramic materials on the support portion of the turbine wheel.

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Walzer and Langer, 687 M.T.Z. Motortechnische Zeitschrift, vol. 44 (1983), Jun., No. 6, Schwabisch Gmund Deutschland.

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