A new type of turbocharger

Abstract

The invention discloses a novel turbosuperchager. The novel turbosuperchager comprises a rotary shaft and a ceramic turbo, wherein the rotary shaft comprises a circumference positioning part, an axial positioning part and a rotary shaft main body; center concave holes are formed in the free end of the circumference positioning part along an axial direction; the end part of the free end of the circumference positioning part is a machining part; the axial positioning part is in the shape of a circular truncated cone; the narrow end of the axial positioning part is connected with the circumference positioning part, and the wide end of the axial positioning part is connected with the rotary shaft main body; the tail part of a center through hole of the ceramic turbo is horn-shaped; a plurality of tooth slots are uniformly formed in the head part of the ceramic turbo along the axial direction around the circumference direction of the center through hole; the circumference positioning part penetrates through the center through hole and then the machining part extends out from the center through hole; the circumference wall of the axial positioning part is adhered to the tail part of the center through hole, so as to realize axial positioning; the machining part is deformed in a riveting process and squeezed into each tooth slots to realize circumference positioning. The novel turbosuperchager has the advantages that not only can the connection difficulty and the connection labor hour of the ceramic turbo and the rotation shaft be greatly reduced, but also the connection strength is high and the working reliability of the turbosuperchager can be effectively ensured.

Description

technical field [0001] The invention relates to a supercharging system, in particular to a novel turbocharger. Background technique [0002] In a turbocharger, the turbine is a very critical and important component. With the development of the turbocharger, the material of the turbine is constantly updated. At present, the commonly used material for turbines is high-nickel alloys, but the turbines made of high-nickel alloys have great limitations in use, so people in the industry have proposed using ceramic materials to make turbines. Because ceramic materials have the characteristics of low density, high temperature resistance, low thermal expansion coefficient, and low material price, the application in turbochargers is very advantageous compared to the current high-nickel alloys. However, the connection between the ceramic turbine and the rotating shaft is quite difficult. At present, the common connection process is to use friction welding, but because the melting point...

AI Technical Summary

Problems solved by technology

However, the connection between the ceramic turbine and the rotating shaft is quite difficult. At present, the common connection process is to use friction welding, but because the melting point of ceramic materials is too high, it is difficult to achieve friction welding, so the specific implementation is more difficult; Turbine and rotating shaft, but under high temperature conditions, the deformation of the ceramic material is very small, while the relative deformation of the rotating shaft is relatively large, which will easily reduce the connection strength and affect the reliability of the product.

Images