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Air bearing for turbocharger

A technology for turbochargers and air bearings, applied to bearings, shafts and bearings, machines/engines, etc., can solve problems such as turbocharger burn-in and engine power reduction, difficulty in providing air boundary layer reliability, etc., to achieve The effect of ensuring reliability

Inactive Publication Date: 2010-06-16
HUNAN TYEN MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

like Figure 5-6 The air bearing of the current turbocharger shown includes a bearing body 1 and a main petal group, the main petal group includes a plurality of main petals 2, and the main petals 2 are installed on the inner wall of the bearing body 1. In the groove; this kind of air bearing only has a set of flaps, which is difficult to provide a reliable air boundary layer while satisfying the reliability of the turbocharger's frequent alternating high and low speeds. When the turbocharger runs at low speed for a long time , because the rotor shaft of the air bearing and the air bearing cannot form an effective air boundary layer, it often causes the turbocharger to burn out and the engine power to drop seriously

Method used

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  • Air bearing for turbocharger
  • Air bearing for turbocharger
  • Air bearing for turbocharger

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Embodiment

[0017] Such as Figure 1-2 Shown: an air bearing for a turbocharger, which includes a bearing body 1, a main lobe set and an auxiliary lobe set, the main lobe set includes a plurality of main lobes 2, and the main lobes 2 are installed on the bearing body 1 In the groove opened on the inner wall of the main lobe group, the inner walls of the bearing body 1 at both ends of the main lobe group are respectively provided with auxiliary lobe groups, each of which includes a plurality of auxiliary petals 3, and the auxiliary petals 3 are connected to the bearing The tangent angle R1 of the inner wall of the body 1 is larger than the tangent angle R2 of the main lobe 2 and the inner wall of the bearing body 1 .

[0018] Working principle: as Figure 3-4 As shown, the turbocharger rotor shaft 4 forms an effective air boundary layer with the sub-lobe 3 when it is lower than 30,000 rpm, ensuring the reliable operation of the turbocharger at low speed; the turbocharger rotor shaft 4 is ...

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Abstract

The invention provides an air bearing for a turbocharger. The air bearing comprises a bearing body (1), a main petal set and auxiliary petal sets, wherein the main petal set comprises a plurality of main petals (2) arranged on the inner wall of the bearing body (1); two auxiliary petal sets are arranged on the inner walls of the bearing body (1) at the two ends of the main petal set; each auxiliary petal set comprises a plurality of auxiliary petals (3); and a contingence angle R (1) between the auxiliary petal (3) and the inner wall of the bearing body (1) is greater than the contingence angle R (2) between the main petal (2) and the inner wall of the bearing body (1). The air bearing can ensure the running reliability of the turbocharger under a complex working condition.

Description

technical field [0001] The invention relates to an air bearing, in particular to an air bearing of a turbocharger. Background technique [0002] The turbocharger adopting the air bearing has a series of advantages: it eliminates the possibility of leaking oil through the oil seal and polluting the intercooler, and it is not necessary to set the inlet and outlet pipelines in the supercharger. [0003] Since the engine operates under variable conditions, especially for public transport or plateau vehicles, the speed of the supercharger ranges from 5,000 rpm to 200,000 rpm. Such as Figure 5-6 The air bearing of the current turbocharger shown includes a bearing body 1 and a main petal group, the main petal group includes a plurality of main petals 2, and the main petals 2 are installed on the inner wall of the bearing body 1. In the groove; this kind of air bearing only has a set of flaps, which is difficult to provide a reliable air boundary layer while satisfying the reliabi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02B39/00F16C32/06
Inventor 张双宏刘石源黎明邹祥
Owner HUNAN TYEN MACHINERY