Floating bearing of turbocharger

A turbocharger and floating bearing technology, which is applied in sliding contact bearings, rotating bearings, bearings, etc., can solve problems such as insufficient lubrication and oil storage, weak drag reduction ability, etc.

Inactive Publication Date: 2017-03-29
BEIJING UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a floating bearing to solve the problem of insufficient lubricating oil storage and weak drag reduction ability of the existing floating bearing

Method used

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  • Floating bearing of turbocharger
  • Floating bearing of turbocharger
  • Floating bearing of turbocharger

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Embodiment Construction

[0019] In order to enable those skilled in the art to understand the examples of the present invention more clearly, the present invention is further described below.

[0020] see figure 2 , 3 , 4, 5, a turbocharger floating bearing, including a floating bearing body, that is, a floating sleeve (3). The floating sleeve (3) is the main structure of the floating bearing. Several annular oil grooves (1) are uniformly arranged on the inner surface (4) of the floating sleeve and the outer surface (5) of the floating sleeve. The cross-sectional shape of the annular oil groove (1) is It is an isosceles triangle, and the annular oil grooves (1) are equidistantly arranged at intervals; there are ridge structures (2) between adjacent annular oil grooves (1), and the ridge structures (2) are the gaps between the annular oil grooves (1). Equally spaced raised portions. The annular oil groove (1) forms a non-smooth surface, and the shear resistance generated when the lubricating oil fl...

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Abstract

The invention discloses a floating bearing of a turbocharger. The floating bearing comprises a floating bearing body, namely a floating sleeve, wherein a plurality of annular oil grooves are formed in inner and outer surfaces of the floating sleeve; the cross section of each annular oil groove is isosceles triangle-shaped; a ridge structure is arranged between every two adjacent annular oil grooves; through oil holes which penetrate through a wall of the floating sleeve are uniformly formed in the floating sleeve along a circumferential direction and an axial direction; and penetration positions of the oil holes are located on the ridge structures. The floating bearing has the beneficial effects that the annular oil grooves on the inner and outer surfaces of the floating sleeve form an unsmooth surface, and shearing resistance formed when lubrication oil flows by the unsmooth surface provided with the longitudinal annular oil grooves is smaller than that formed when the lubrication oil flows by a smooth surface, so that the lubrication oil can effectively flow by the surface, and an aim of drag-reduction is reached. Furthermore, the through oil holes are uniformly formed in the floating sleeve, and on the condition that the lubrication oil is used for lubrication, the oil holes have high capability of lubrication oil storage and oil film forming.

Description

technical field [0001] The invention relates to the technical field of engine turbochargers, in particular to a turbocharger floating bearing. Background technique [0002] Sharks are one of the fastest swimming animals in the ocean, but their skin has not evolved to be very smooth, but instead has a grooved skin texture with ridges. Studies have confirmed that when turbulent flow flows through such a non-smooth surface with longitudinal grooves, the shear resistance generated is smaller than that when flowing through a smooth surface. Based on this phenomenon, a new drag reduction and desorption technology that mimics biological non-smooth surfaces has quietly emerged. [0003] The basic principle of a turbocharger is to use the exhaust gas from the engine to drive the turbine to rotate, drive the compressor impeller to rotate, and press fresh air into the cylinder, thereby achieving power density improvement and energy saving and emission reduction. [0004] The turbocha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C33/10
CPCF16C33/1065F16C17/02F16C17/18F16C33/106F16C2360/24
Inventor 王建华童万庆刘志峰孟昭阳李伟凯
Owner BEIJING UNIV OF TECH
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