Turbocharger and compressor wheel therefor

A technology for compressor impellers and turbochargers, applied in the field of compressor impellers, can solve problems such as energy damage, achieve good heat resistance, increase adhesion and cohesion, and help stabilize the effect

Inactive Publication Date: 2012-05-23
BORGWARNER INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, the ductility of the material should be high enough so that under overload conditions, the part can undergo plastic deformation without fracture, which could result in a sudden release of energy leading to damage

Method used

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  • Turbocharger and compressor wheel therefor
  • Turbocharger and compressor wheel therefor

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Embodiment Construction

[0034] In an advantageous embodiment, the aluminum-based alloy specified in the introduction comprises the element lanthanum. It has surprisingly been found that the element lanthanum in aluminum-based alloys has a positive effect on the stability of the material. Without being bound by theory, it is assumed here that the element lanthanum in Al-based alloys forms thermally stable Al3La phases (so-called age-hardening phases) that stabilize the microstructure in the alloy by forming microdendritic structures change. A particularly good creep strength is thus achieved in the material, with simultaneously increased heat resistance and vibration resistance.

[0035] It has also been found that the addition of lanthanum to aluminum-based alloys according to the invention has a considerable increase in strength both at room temperature (i.e. at about 20°C) and at component temperatures of about 220°C and even up to 300°C. Effect. It is also assumed here that this is due to this ...

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Abstract

The invention relates to a compressor wheel for a turbocharger, in particular in combination with a diesel engine, and to an exhaust gas turbocharger comprising such a compressor wheel.

Description

technical field [0001] The invention relates to a compressor wheel for a turbocharger (in particular in combination with a diesel engine) according to the preamble of claim 1 and to a compressor wheel comprising a compressor wheel according to the preamble of claim 9 Gas turbocharger, and to a method according to the preamble of claim 17 for producing such a compressor wheel according to the invention. Background technique [0002] An exhaust turbocharger is a system designed to increase the power of a piston engine. In an exhaust turbocharger, the energy of these exhaust gases is used to increase power. The increase in power and reduction in emissions is a result of the increased throughput of mixture per working stroke. [0003] A turbocharger basically comprises an exhaust turbine with a shaft and a compressor, wherein a compressor wheel arranged in an engine intake is connected to the shaft and is located between the exhaust turbine and the compressor These vane wheel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02B39/00F02C6/12F04D29/26B22F5/04
CPCF02B39/00F05D2300/173F04D29/023F05C2201/903F02C6/12F01D5/28F04D29/284C22C21/14F05D2230/21F05D2260/96F05D2300/608F05D2220/40Y02T10/12
Inventor G·沙尔M·加贝尔
Owner BORGWARNER INC
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