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Variable geometry turbine

A geometry and turbine technology that can be used in mechanical equipment, combustion engines, engine components, etc., to solve problems such as high financial costs

Active Publication Date: 2012-05-02
CUMMINS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Actuation of such turbines may require complex, large, powerful actuators combined with complex linkages
Such actuators and linkages can have high financial costs

Method used

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  • Variable geometry turbine
  • Variable geometry turbine
  • Variable geometry turbine

Examples

Experimental program
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Embodiment Construction

[0060] refer to figure 1 , which shows a known variable geometry turbocharger, wherein the turbocharger comprises a variable geometry turbine housing 1 and a compressor housing 2 interconnected by a central bearing sleeve 3 . The turbocharger shaft 4 extends from the turbine housing 1 to the compressor housing 2 via the bearing sleeve 3 . A turbine wheel 5 is mounted on one end of the shaft 4 for rotation within the turbine housing 1 and a compressor wheel 6 is mounted on the other end of the shaft 4 for rotation within the compressor housing 2 . The shaft 4 rotates about the turbocharger axis 4 a on a bearing assembly located in the bearing housing 3 .

[0061] The turbine housing 1 defines an inlet volute 7 to which gas from an internal combustion engine (not shown) is delivered. Exhaust gas flows from the inlet volute 7 to the axial outlet passage 8 via the annular inlet passage 9 and the turbine wheel 5 . The inlet passage 9 is delimited on one side by a surface 10 of a...

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PUM

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Abstract

A variable geometry turbine comprises a turbine wheel mounted within a housing for rotation about a turbine axis; and a gas flow control passage upstream of said turbine wheel, the gas flow control passage being defined at least in part between a radial first surface of a movable wall member and a facing wall of the housing, the movable wall member also comprising second and third surfaces which oppose the first surface. The movable wall member is movable in an axial direction so as to vary the size of the gas flow control passage. There is a first gas region of the turbine, a portion of which is upstream of the gas flow control passage, the first gas region including at least a portion of the gas flow control passage; a second gas region of the turbine downstream of the gas flow control passage which contains the turbine wheel; and a third gas region of the turbine downstream of the turbine wheel. The first gas region comprises the first and second surfaces, and the second gas region or third gas region comprises the third surface.

Description

technical field [0001] The invention relates to a variable geometry turbine and a method of manufacturing the turbine. Background technique [0002] A turbocharger is a well known device for supplying air to the intake port of an internal combustion engine at a pressure above atmospheric pressure (boost pressure). A conventional turbocharger basically consists of an exhaust gas driven turbine wheel mounted on a rotatable shaft within a turbine housing. Rotation of the turbine wheel rotates a compressor wheel mounted on the other end of the shaft within the compressor housing. The compressor wheel delivers compressed air to the engine intake manifold. The turbocharger shaft is traditionally supported by journal and thrust bearings including a suitable lubrication system within a central bearing housing connected between the turbine and compressor wheel housings. [0003] The turbine stage of a conventional turbocharger comprises: a turbine housing defining a turbine chambe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01D17/16
CPCF01D17/143F05D2220/40F05B2220/40F02B37/24Y02T10/144F02B37/186Y10T29/4932Y02T10/12F02B37/22
Inventor 大卫·安德鲁·拉克斯蒂芬·爱德华·加勒特阿伦·塔米尔·塞尔万·维贾雅库马尔
Owner CUMMINS LTD
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