Passenger car gasoline engine turbocharger bearing body

Abstract

The invention discloses a passenger car gasoline engine turbocharger bearing body. The bearing body includes a bearing bulk, a thrust bearing oil inlet, a first annular cooling water cavity, a floating bearing oil inlet, a third annular cooling water cavity and a first cooling water inlet. A bearing bulk oil inlet is disposed above the bearing bulk, and the bearing bulk internally includes a thrust bearing, the right end of the thrust bearing oil inlet is connected to the bearing bulk oil inlet, a second annular cooling water cavity is disposed below the first annular cooling water cavity, theupper end of the floating bearing oil inlet is connected to the bearing bulk oil inlet, the left side of the third annular cooling water cavity is equipped with a return oil cavity, and a second cooling water outlet is disposed below the first cooling water inlet. The turbocharger bearing body provided by the invention is equipped with three cooling water cavities evenly distributed in the bearing bulk, uniform cooling can be achieved and the water feeding mode adopts the mode of feeding and discharging at the same time, the cooling water cavity close to the water inlet has large diameter width, local cooling is fast, and the cooling effect is obvious.

Description

technical field [0001] The invention belongs to the technical field of turbochargers, in particular to a bearing body of a turbocharger for a gasoline engine of a passenger car. Background technique [0002] As the power density of natural gas and diesel engines continues to increase, along with the higher exhaust temperature of the engine, the thermal load on the turbocharger is also increasing, and the working environment is getting worse and worse, which will cause the turbine end of the bearing body to The temperature at the sealing ring and the floating bearing is too high. Long-term use will cause the lubricating oil to coke, the sealing ring will lose its elasticity due to carbon deposition, and the lubrication and cooling effect of the lubricating oil entering the floating bearing will decrease, resulting in oil leakage from the supercharger and reliability of the shaft system. Sexual decline or even damage. In order to ensure the normal operation of the floating be...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a passenger car gasoline engine turbocharger bearing body, to solve the problem of uneven cooling and poor cooling effect in the above-mentioned background technology

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