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A compressor end sealing structure of a turbocharger

A compressor end seal, turbocharger technology, applied in the direction of machines/engines, mechanical equipment, engine components, etc., can solve the problems of limited exhaust energy, insufficient negative pressure resistance, rain leakage, etc., to achieve improved load resistance The ability to suppress oil leakage, low cost, and the effect of preventing ingress

Active Publication Date: 2016-06-15
宁波摩多进出口有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The mechanism of turbocharger oil leakage is as follows: First, after the engine starts running, the sealing structure of the compressor end of the turbocharger is running at idle speed, because the engine is not loaded and the exhaust energy is limited, driving the supercharger The running speed is very low, which is not enough for the supercharger to normally play the role of increasing the pressure and increasing the intake air density. At this time, the reciprocating movement of the engine piston does make the intake pipe form a negative pressure, so that the compressor end of the supercharger is at In the state of negative pressure, if the idling works for a long time, when the negative pressure is greater than the resistance generated by the sealing structure of the compressor end of the supercharger, the lubricating oil in the bearing body will be sucked out and the rain leakage due to insufficient negative pressure resistance will occur.

Method used

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  • A compressor end sealing structure of a turbocharger
  • A compressor end sealing structure of a turbocharger
  • A compressor end sealing structure of a turbocharger

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] like Figure 5 , 6 , 7, this embodiment is basically the same as the turbocharger (integral type) in the prior art, the difference is that the compressor end 0001 includes a back plate 0012, a shaft seal sleeve 003, and the back plate 0012 The middle part 1.4 is provided with a cylindrical body 1.5 matched with the shaft seal sleeve 003; the oil retaining dam 1.6 is annularly arranged at the end of the outer circle 1.7 of the cylindrical body 1.5 and forms an oil return groove 1.8 on the outer circle, and a back plate 1.2 The oil return groove and the oil retaining dam set on it can be formed by casting or by machining, and the oil return groove 1.8 is equivalent to the oil separation groove and the oil separation pool with the same meaning, and the oil retaining dam 1.6 is the same as the oil retaining dam with the same meaning The oil wall and the oil deflecting ring are the same. The outer edge 1.9 of the shaft seal sleeve 003 is provided with an oil throwing struc...

Embodiment 2

[0034] like Figure 9 , 10 , 11, this embodiment is basically the same as the turbocharger (split type) in the prior art, the difference is that the compressor end sealing structure includes an oil sealing cover 006, a shaft sealing sleeve 0012, and the oil sealing The middle part 1.11 of the cover is provided with a cylindrical body 1.12 matched with the shaft seal sleeve; the oil retaining dam 1.13 is annularly arranged at the end of the outer circle 1.14 of the cylindrical body and forms an oil return groove 1.15 on the outer circle 1.14 to seal the oil The oil return groove and oil retaining dam provided on the cover can be formed by casting or machining, and the oil return groove 1.15 is equivalent to the oil trap and oil trap with the same meaning, and the oil retaining dam 1.13 is the same as the oil trap with the same meaning The oil retaining wall and oil retaining ring are the same. An oil throwing structure 1.17 is provided on the outer edge 1.16 of the shaft seal...

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PUM

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Abstract

The invention discloses a gas compressor end sealing structure of a turbocharger. The gas compressor end sealing structure comprises a back disk or an oil sealing cover and a shaft sealing sleeve. The middle of the back disk or the oil sealing cover is provided with a columnar body matched with the shaft sealing sleeve. An oil stop dam is annularly arranged at the end of the outer circle of the columnar body, and an oil return groove is formed in the outer circle. An oil throwing structure is arranged on the outer edge of the shaft sealing sleeve. The gas compressor end sealing structure is simple in structure, low in cost and high in sealing performance and oil leakage resistance. Specifically, the oil return groove and the oil stop dam of the back disk (integrated) or the oil sealing cover (split) effectively block and prevent engine oil under pressure from flowing to a gap inlet when the turbocharger works, the oil throwing structure arranged on the shaft sealing sleeve rotating at a high speed centrifugally throws off the engine oil gathered in the working process, and therefore lubricating oil is effectively prevented from entering the shaft sealing sleeve through a gap.

Description

technical field [0001] The invention relates to a turbocharger, in particular to a compressor end sealing structure of the turbocharger. Background technique [0002] The internal combustion engine is currently the mobile power machine with the highest thermal efficiency that humans can master. It meets the needs of various supporting machinery with its excellent power, reliability, economy, and environmental protection. It is widely used in industry, agriculture, road / ship transportation The supporting use of transportation, geological / oil drilling, power generation and national defense special power plays a huge role in my country's infrastructure, transportation, industry and agriculture, and national defense modernization, as well as promoting and promoting economic development and improving people's living standards. [0003] With the shortage of international petroleum resources and the strengthening of environmental protection, high efficiency, energy saving, and low e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02B39/14F01D25/18
Inventor 王剑陈维真
Owner 宁波摩多进出口有限公司