Patent ID: 7559751
Filing Date: 2009-07-14
Classification: F02B,Y02T

Abstract:
1. A supercharger with an electric motor, the supercharger comprising: a turbine impeller rotationally driven by an exhaust gas; a compressor impeller rotationally driven by rotation of the turbine impeller to compress air; a compressor housing accommodating the compressor impeller in an inside thereof; a turbine housing accommodating the turbine impeller in an inside thereof; a shaft coupling the turbine impeller and the compressor impeller; a bearing housing rotatably supporting the shaft; an electric motor accommodated in an inside of the bearing housing for assisting rotation of the turbine impeller; and a power supply line extending from the inside to an outside of the bearing housing, and having one end portion connected to the electric motor and the other end portion connected to a connector that receives electric power, wherein the connector is installed at a position that is away from a side of the turbine impeller, and is less affected by heat of the exhaust gas, and wherein an outer circumferential surface of the bearing housing has a circular portion having a cross section that is perpendicular to an axial direction and which is formed in a circular shape, and first and second attaching members are attached to the circular portion, each of the first and second attaching members have a semicircular arc portion that conforms to the shape of the circular portion, and the first and second attaching members are coupled such that the semicircular arc portions are fitted to the circular portion, wherein the first attaching member has a protruding portion that extends from a bearing housing side to a compressor housing side in a state wherein the first attaching member is fitted to the circular portion, and a connecting fixing portion is formed in the protruding portion to be positioned in the vicinity of the compressor housing in a state wherein the first attaching member is fitted to the circular portion, and the connector is fixed to the connecting fixing portion.