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Variable turbine/compressor geometry

A geometry, compressor technology, used in machines/engines, gas turbine installations, mechanical equipment, etc., to solve problems such as difficult maneuverability, high exhaust gas turbochargers, weakening of variable geometry turbine/compressor life, etc.

Inactive Publication Date: 2014-01-08
BMTS TECH SHANGHAI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The friction forces that arise here not only lead to high hysteresis and the resulting intractability of the exhaust gas turbocharger, but also impair the life of the variable-geometry turbo / compressor

Method used

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  • Variable turbine/compressor geometry
  • Variable turbine/compressor geometry
  • Variable turbine/compressor geometry

Examples

Experimental program
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Effect test

Embodiment Construction

[0018] Refer to Figure 1 and figure 2 , the inventive variable geometry turbine / compressor 1 of a gas turbocharger for an internal combustion engine of a motor vehicle includes a vane bearing ring 2 on which guide vanes 3 are mounted. The cover plate 4 is arranged on the surface of the guide vane 3 , in order to better show the surface end 5 of the guide vane 3 facing the cover plate 4 , FIG. 1 only shows a part of the cover plate 4 . According to the invention, at least one air guide channel 6 , generally an air guide channel, runs through at least one guide vane 3 , comprising at least one air inlet 8 , 8 ′ in the area of ​​the lateral projection 7 and one located towards the cover. Discharge openings 10, 10', 10" on the surface end 5 of the disc 4 and / or on the bottom 9 towards the blade bearing ring 2, and thereby produce a reduction in the surface end 5 and / or on the bottom 9 Gas buffers for friction, especially air buffers.

[0019] Obviously, the guide vane 3 of the ...

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Abstract

The present invention relates to a variable turbine / compressor geometry (1), in particular for an exhaust-gas turbocharger of an internal combustion engine, preferably of a motor vehicle, having a blade bearing ring (2) and guide blades (3) which are mounted rotatably therein, and having a cover disc (4) which is arranged on the front side of the guide blades (3). It is essential to the invention that at least one guide blade (3) is penetrated by at least one gas-conducting channel (6, 6') which has at least one inlet opening (8, 8') in the region of a profile lug (7) and has an outlet opening (10, 10', 10'') on the front side (5) which is directed towards the cover disc (4) and / or on the underside (9) which is directed towards the blade bearing ring (2), and, as a result, generates an air cushion which reduces friction on the front side (5) and / or on the underside (9) during operation. As a result, hysteresis behaviour and the service life can be influenced positively.

Description

technical field [0001] The invention relates to a variable geometry turbine / compressor, in particular for an exhaust gas turbocharger of an internal combustion engine. The invention also relates to a supercharging device having said variable geometry turbine / compressor and guide vanes. Background technique [0002] A supercharging device is a device for increasing the power of a motor vehicle's internal combustion engine of modern design, wherein, in a supercharging device designed as an exhaust gas turbocharger, the exhaust gas of the internal combustion engine drives the turbine of the supercharging device and turns the compression through the turbine wheel, whereby the compressor can supply compressed boost gas to the internal combustion engine. [0003] In known variable geometry turbines / compressors which generally include guide vanes rotatably mounted on a vane bearing ring, due to the axial forces acting on the guide vanes, Friction is generated between the guide va...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01D5/12F01D5/14F01D5/18F01D17/16F02C6/12
CPCF05D2240/121F05D2260/60F05D2220/40F05D2230/22F05D2240/12F01D9/045F05D2240/125F01D5/147F02B37/24F01D17/165F05D2230/21Y02T10/12
Inventor 约亨·劳本德尔延斯·克雷斯
Owner BMTS TECH SHANGHAI CO LTD
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