Two-part valve member assembly

A two-part wastegate valve member assembly 37, eg for a turbocharger or power turbine, comprises a valve member 35 and a support member 36 having an aperture 80. The valve member 35 comprises a central portion 82 extending through the aperture 80 and two integrally formed end portions 84, 86 dispose...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	Matthew J. Purdey
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING COMBINED OPERATIONS COMBUSTION ENGINES COMBUSTION ENGINES IN GENERAL ENGINE PLANTS IN GENERAL HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS INTERNAL-COMBUSTION PISTON ENGINES LIGHTING MACHINE TOOLS MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING METAL-WORKING NOT OTHERWISE PROVIDED FOR NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES OTHER WORKING OF METAL PERFORMING OPERATIONS STEAM ENGINES TRANSPORTING UNIVERSAL MACHINE TOOLS WEAPONS
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Beschreibung
Zusammenfassung:	A two-part wastegate valve member assembly 37, eg for a turbocharger or power turbine, comprises a valve member 35 and a support member 36 having an aperture 80. The valve member 35 comprises a central portion 82 extending through the aperture 80 and two integrally formed end portions 84, 86 disposed on opposite sides of the aperture 80. Each of the two end portions 84, 86 has dimensions such that the valve member 35 is held captive by the support member 36. A method for forming the two-part wastegate valve member assembly 37 comprises casting a single manufacturing intermediate 140, eg by investment casting, and processing the intermediate 140, eg by cutting, so as to form the two-part assembly 37. The second end portion 86 may be deformed, eg in a hydraulic press, to reduce the extent of movement of the valve member 35. Vibration may be used to deburr the assembly 37.