Turbocharger with variable turbine nozzle actuated by...

Details Turbocharger with variable turbine nozzle actuated by... Turbocharger with variable turbine nozzle actuated by...

2008-11-24

2011-12-20

Leung, Quyen (Department: 2834)

Power plants

Fluid motor means driven by waste heat or by exhaust energy...

With supercharging means for engine

C415S163000, C415S164000

Reexamination Certificate

active

08079217

ABSTRACT:
A turbocharger having a variable turbine nozzle that includes an array of vanes whose setting angle is adjustable by rotation of a crank shaft coupled with a unison ring that pivots the vanes. The crank shaft is rotated by an actuation system made up of a piston contained in a bore formed in the center housing, and a hydraulic system for supplying pressurized hydraulic fluid to the bore selectively on one side or an opposite side of the piston for causing the piston to move in one direction or the other. The piston is connected to the crank shaft by a mechanical linkage that converts reciprocating movement of the piston to rotational movement of the crank shaft. A spring is arranged between the piston and a surface of the bore and continuously exerts a spring force on the piston toward the fully open position of the piston.

REFERENCES:
patent: 3270951 (1966-09-01), Reed
patent: 6269642 (2001-08-01), Arnold et al.

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