Dynamic oil limiting type trust bearing of turbocharger

Abstract

The invention provides a dynamic oil limiting type thrust bearing of a turbocharger. The dynamic oil limiting type thrust bearing comprises a bearing body, a first thrust plate, a spacer sleeve, a thrust bearing plate and a second thrust plate. The first thrust plate and the second thrust plate are fastened to a rotary shaft and fixedly connected through the spacer sleeve which is connected to the middle of the thrust bearing plate fixed to the bearing body in a sleeving mode. A first bearing gap and a second bearing gap are separately formed between the first thrust plate and the thrust bearing plate and between the second thrust plate and the thrust bearing plate. The thrust bearing plate is provided with an oil inlet and a circumferential oil storage and distribution cavity communicating with the oil inlet. The spacer sleeve is provided with an oil limiting ring in the circumferential direction of the outer diameter. The oil limiting ring is located in the oil storage and distribution cavity. The dynamic oil limiting turbocharger has the beneficial effects that under the condition that normal oil supply to a bearing surface is ensured, dynamic bilateral reversing operation is achieved through the oil limiting ring and the oil storage and distribution cavity, the lubricating oil quantity on the non-bearing surface of the thrust bearing is limited, the total lubricating oil demand of the thrust bearing is decreased, and meanwhile, normal bearing of the bearing face of the thrust bearing is not affected.

Description

technical field

[0001] The invention belongs to the technical field of turbochargers, in particular to a dynamic oil-limiting thrust bearing of a turbocharger. Background technique

[0002] The main power of land vehicles and ships generally adopts high-pressure ratio turbochargers to increase power. The supercharger rotor-radial / thrust bearing system is the main part of the supercharger, and its stability and reliability directly affect the normal operation of the engine. Work. The thrust bearing is the only part that bears the axial load of the supercharger rotor, and the ability to bear the load is very important.

[0003] The lubricating oil of the turbocharger is provided by the engine oil pump. A large demand for lubricating oil will increase the burden on the oil pump and consume more shaft power of the engine, which is not conducive to reducing the fuel consumption rate and improving the efficiency of the engine. The amount of lubricating oil in the supercharger ac...

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