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Sliding vane turbocharger with graduated vanes

A turbocharger, blade technology, used in engine components, combustion engines, machines/engines, etc.

Inactive Publication Date: 2003-11-05
HONEYWELL GARRETT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In prior art variable geometry turbochargers of the piston type, the challenge has always been to maximize aerodynamic performance in balance with the tolerance of mating surfaces, especially blades that are subject to extreme temperature variations and mechanical stress and housing slots, and a means to provide actuating pistons in an easily manufacturable structure

Method used

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  • Sliding vane turbocharger with graduated vanes
  • Sliding vane turbocharger with graduated vanes
  • Sliding vane turbocharger with graduated vanes

Examples

Experimental program
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Embodiment Construction

[0015] See attached picture, figure 1 An embodiment of the invention is shown for a turbocharger 10 incorporating a turbine housing 12 , a center housing 14 and a compressor housing 16 . The turbine wheel 18 is connected to a compressor wheel 22 by a shaft 20 . The turbine wheel converts energy from the engine exhaust supplied from an exhaust manifold (not shown) into gas energy in a volute 24 in the turbine housing. Exhaust gases expand through the turbine and exit the turbine housing through outlet 26 .

[0016] The compressor housing has an inlet 28 and an outlet volute 30 . The bottom plate 32 is connected to the compressor housing by bolts 34 . In turn, the bottom plate is secured to the center housing with bolts (not shown). A first ring seal 36 is engaged between the base plate and the compressor housing, and a second ring seal 38 is engaged between the base plate and the center housing. Bolts 40 and retaining washers 42 connect the turbine casing to the center cas...

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PUM

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Abstract

The invention relates to a turbocharger, which has a variable turbine suction nozzle, including a movable cylindrical piston to change the area of ​​the suction nozzle in the turbine. Vanes mounted on the piston to control flow into the nozzle pass through a slotted heat shield that supplies a smooth aerodynamic flow into the turbine blades. The blade also includes a stepped portion having a greater chord and depth that engages the surface of the heat shield and seals the groove when the piston is in the closed position. An axial drive is connected to operate the piston.

Description

technical field [0001] The present invention generally relates to variable geometry turbochargers. In particular, it relates to a turbocharger having a sliding vane variable nozzle turbine inlet, the vanes being received in the turbine housing by a suspended slotted sheet metal heat shield, the vanes having a stepped shape to seal Cover the surface of the heat shield. Background technique [0002] The high-efficiency turbocharger uses a variable geometry system for the turbine nozzle inlet to improve performance and aerodynamic efficiency. There are generally two types of variable geometry systems used in turbochargers: rotating vanes and pistons. The rotating vane type exemplified by US Patent No. 5,947,681 entitled "PRESSURE BALANCED DUAL AXLE VARIABLENOZZLE TURBOCHARGER" provides a plurality of individual vanes located in the turbine inlet nozzle to rotatably reduce or increase nozzle area and flow. The piston type exemplified by U.S. Patents 5,214,920 and 5,231,831, b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02B37/22F01D17/14F01D17/16
CPCF01D17/143F01D17/167F05D2220/40F02B37/22
Inventor 阿兰·勒内·隆巴尔让-吕克·于贝尔·佩兰
Owner HONEYWELL GARRETT