Impeller for an exhaust gas turbocharger, exhaust gas turbocharger and method for balancing a rotor arrangement of an exhaust gas turbocharger

A technology for exhaust gas turbines and compressor rotors, which is applied to components of pumping devices for elastic fluids, gas turbine devices, static/dynamic balance testing, etc., to achieve the effect of reducing scrap rate

Inactive Publication Date: 2021-10-15
IHI CHARGING SYST INT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This then results in an increased scrap rate in the worst case

Method used

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  • Impeller for an exhaust gas turbocharger, exhaust gas turbocharger and method for balancing a rotor arrangement of an exhaust gas turbocharger
  • Impeller for an exhaust gas turbocharger, exhaust gas turbocharger and method for balancing a rotor arrangement of an exhaust gas turbocharger
  • Impeller for an exhaust gas turbocharger, exhaust gas turbocharger and method for balancing a rotor arrangement of an exhaust gas turbocharger

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Embodiment Construction

[0028] The impeller 1 of a rotor arrangement 2 for an exhaust gas turbocharger 3 according to the prior art is designed according to FIG. 1 . The impeller 1 is designed in the form of a compressor rotor. The rotor arrangement 2 comprises a compressor rotor 1 and a turbine rotor (not shown in detail), which is connected in a rotationally fixed manner to the compressor rotor 1 via a shaft (not shown in detail).

[0029] The rotor arrangement 2 is mounted rotatably in a bearing section (not shown in detail) of the exhaust gas turbocharger 3 about a rotation axis (not shown in detail) of the rotor arrangement 2 . The turbine rotor is accommodated rotatably in a non-detailed exhaust gas guide section of the exhaust gas turbocharger 3 through which flow can flow. The turbine rotor is impinged on and rotated by exhaust gas from an internal combustion engine, not shown in detail, which is flow-through-connected to the exhaust gas turbocharger 3 , via inlet channels (not shown) of the...

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Abstract

The invention relates to an impeller for an exhaust gas turbocharger, wherein the impeller (1) is mounted rotatably about an axis of rotation in the housing of the exhaust gas turbocharger (3), and wherein the impeller (1) has a hub ( 5), the hub has a wheel ridge (6) and a wheel end away from the wheel ridge (6), and wherein a plurality of impeller blades (4) are formed on the wheel hub (5), and the impeller blades are formed on the wheel ridge (6) ) and the wheel end, and wherein the first blade (7) of the plurality of impeller blades (4) and the second blade ( 8) A balance mark (11) is provided in the vane channel (9) formed between them. According to the invention, the balancing mark (11) is designed like a triangle. Furthermore, the invention relates to an exhaust gas turbocharger with such an impeller and to a method for balancing a rotor arrangement for such an exhaust gas turbocharger.

Description

technical field [0001] The invention relates to an impeller for an exhaust gas turbocharger, an exhaust gas turbocharger and a method for balancing a rotor arrangement of an exhaust gas turbocharger. Background technique [0002] Laid-open document DE 10 2010 048 099 A1 discloses a rotor arrangement with an impeller of an exhaust gas turbocharger. The impeller has impeller blades which are arranged on a hub which has a ridge and a wheel end which is formed facing away from the ridge. The curved balance marks are introduced into the impeller on the ridge. [0003] A rotor arrangement is known from the publication DE 10 2015 219 374 A1, which has a pear-shaped balance marking. The pear-shaped balance marker thus has a base body with a head which is designed to be significantly smaller than the base body. It is problematic that the base body is positioned towards the center of the wheel, while the head is positioned towards the outer edge of the wheel. This means that due t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/66F01D5/02F01D5/04F02C6/12G01M1/34
CPCF01D5/027F01D5/04F01D5/048F02C6/12F04D29/284F04D29/662F05D2220/40F01D5/02F01D5/10G01M1/34
Inventor 苏珊·希贝尔罗伯托·德桑蒂斯马丁·克雷谢尔托尔斯滕·格拉姆施勒内·霍夫曼
Owner IHI CHARGING SYST INT
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