Patent ID: 6679057
Filing Date: 2004-01-20
Classification: F01D,F02B,F02D,F04D,F05D,Y02T

Abstract:
A turbocharger for internal combustion engines, the turbocharger comprising:a center housing; a shaft positioned axially within the housing, the shaft having a first end and a second end; a turbine housing attached to one side of the center housing and having a turbine wheel disposed therein that is coupled to the first end of the shaft; a first variable geometry member disposed within the turbine housing between an exhaust gas inlet and the turbine wheel; a compressor housing attached to another side of the center housing opposite the turbine housing and having a compressor impeller disposed therein, the compressor impeller being coupled to the second end of the shaft; a second variable geometry member disposed within the compressor housing and interposed between an air outlet and the compressor impeller; and an actuator assembly disposed within the turbocharger and connected to the first and second variable geometry members to provide simultaneous actuation of the same; wherein the actuator assembly includes an actuator crank disposed axially through the turbocharger center housing and coupled at opposite ends to the first and second variable geometry members; a piston assembly disposed within the center housing and coupled to the actuator crank by rack and pinion gear engagement: and a solenoid valve attached to the turbocharger and configured to provide reciprocating movement of the piston assembly by electro-hydraulic force.