초록 ▼

A rotor shaft assembly for use in turbochargers includes a metal shaft having a generally cylindrical female cavity therein concentrically distributed about the axis thereof; and a solid hubbed ceramic turbine wheel having a male stub shaft insertable into the female cavity. The axis of the male stu

A rotor shaft assembly for use in turbochargers includes a metal shaft having a generally cylindrical female cavity therein concentrically distributed about the axis thereof; and a solid hubbed ceramic turbine wheel having a male stub shaft insertable into the female cavity. The axis of the male stub shafted ceramic turbine is coextensive with the axis of the shaft and the stub shaft is mated with the female receptacle and joined by an adhesive. A turbocharger includes a rotor-shaft assembly of the above-described type, in which the metal to ceramic adhesive joint is located in the turbocharger center housing.

대표청구항 ▼

A rotor shaft assembly of the type used in a turbocharger for rotating about its axis to drive a compressor and supply compressed air to an internal combustion engine comprising: a metal shaft having a compressor impeller mounted at one end thereof and defining a coaxial bore extending into the shaf

A rotor shaft assembly of the type used in a turbocharger for rotating about its axis to drive a compressor and supply compressed air to an internal combustion engine comprising: a metal shaft having a compressor impeller mounted at one end thereof and defining a coaxial bore extending into the shaft at the other end thereof, said shaft including at least one generally annular land projecting radially inward from said shaft into the coaxial bore and having an axial length less than that of the bore with recessed areas in flanking relationship to said at least one land, said at least one land including at least one axially oriented relief groove therethrough. a ceramic turbine rotor including a generally cylindrical stub shaft coaxially located by and in contact with said at least one land, thereby defining an annular space between said stub shaft and said metal shaft, and a high temperature adhesive in said annular space for securing said stub shaft to said metal shaft in a torque transmitting relationship.