Inventors:
Kolja Nikolic - Yorba Linda CA, US
Michael Moyer - Redondo Beach CA, US
George Adeff - Westchester CA, US
Kevin Slupski - Redondo Beach CA, US
Matthew Oakes - Redondo Beach CA, US
Dennis L. Brookshire - Novi MI, US
International Classification:
F01D 17/16
F02B 37/22
Abstract:
A variable geometry turbocharger assembly comprises a unison ring which rotates about a longitudinal axis defined by a shaft on which a turbine wheel and compressor wheel are attached in order to pivot a plurality of vanes and thereby control a flow of exhaust gas to the turbine wheel. The unison ring rotates on at least one guide pin which is secured to the turbocharger. The guide pins may be press-fit into apertures in a center housing at an outer pilot surface. In other embodiments the guide pins may be press-fit into a different part of the turbocharger such as a nozzle ring. The guide pins may each have a wear surface which defines a circumferential radius of curvature which is substantially equal to a circumferential radius of curvature of a radially inner surface of the unison ring.
