Patent ID: 6739845
Filing Date: 2004-05-25
Classification: F01D,F02B,F02C,F04D,F05D,F16C,H02K,Y02T

Abstract:
A compact turbocharger, comprisinga rotatable shaft having an exhaust gas driven turbine wheel at one end and a compressor wheel at the other end, a bearing housing surrounding said rotatable shaft, having an inner bearing-engaging portion with bearing engagement surfaces adjacent the turbine wheel and the compressor wheel, an outer housing portion forming, with said inner bearing-engaging portion, a coolant water jacket for cooling said bearing engagement surfaces, a pair of anti-friction ball bearings, each of said pair of anti-friction ball bearing being engaged between one of said bearing engagement surfaces of the bearing housing and said rotatable shaft, radial springs between said anti-friction ball bearings and said bearing engagement surfaces, an exhaust gas volute carried by said bearing housing around said turbine wheel, and a compressor casing around the compressor wheel forming a compressor inlet and outlet carried by said bearing housing.