Rotor Support Mechanism of Rolling Bearing Turbocharger

Abstract

The invention belongs to the field of turbochargers for internal combustion engines, in particular to a rotor supporting mechanism of a rolling bearing turbocharger. It includes a bearing sleeve and two springs, two thrust sleeves and two bearings in the bearing sleeve. The two springs are symmetrically arranged in the bearing sleeve and connected to each other. Put the spring into the thrust sleeve and apply pre-tightening force. Two bearings are respectively arranged on the end face of the thrust sleeve. Both bearings are angular contact rolling bearings. The advantage of the present invention is that ceramic rolling bearings are used instead of ordinary floating bearings, which improves the mechanical efficiency and transient response capability of the turbocharger, solves the vibration problem of the rolling bearing turbocharger, and improves the steady-state performance and performance of the turbocharger. The service life of the rolling bearing is improved, the support rigidity of the rolling bearing is improved, the limit speed of the rolling bearing is increased, the requirement of high-speed operation of the turbocharger is met, the lubrication problem of the turbocharger is solved, the reliability of the rolling bearing supercharger is improved, and the balanced transmission The force system meets the requirements for the normal operation of the rolling bearing turbocharger.

Description

technical field [0001] The invention belongs to the field of turbochargers for internal combustion engines, in particular to a rotor supporting mechanism of a rolling bearing turbocharger. Background technique [0002] As is well known, a turbocharger is a device for supplying air to the intake port of an internal combustion engine at a pressure above atmospheric pressure (boost). A conventional turbocharger includes an exhaust gas-driven turbine wheel mounted on a rotating shaft within a turbine housing engaged downstream of the engine outlet manifold. The rotation of the turbine impeller drives the compressor impeller in the pressure casing at the other end to rotate. The compressor wheel delivers compressed air to the engine intake manifold. The rotor of the turbocharger is supported by a bearing system in the housing. [0003] A turbocharger is actually a special kind of air compressor. It uses the high-temperature, high-pressure exhaust gas discharged from the engin...

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to propose a rotor support mechanism for a rolling bearing turbocharger, aiming at the disadvantage of poor sensitivity of the floating bearing that exists in the floating bearing used in the rotor support system of the turbocharger in the above technology. Floating bearings are changed to rolling bearings, and thrust bearings are no longer needed, and thrust bearings are no longer used, which reduces the number of parts, saves costs, and improves system reliability.

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