Vibrational Inspection of Rotational Imbalance of Turbo-charger Impeller for Automobile

The design of low-solidity diffuser vanes and the effect on the performance of a turbo-charger compressor is discussed. The effect of vane number and turning angle was investigated while maintaining a basic design with a solidity of 0.69 and a leading edge angle of 75°. This large leading edge angle was specifically chosen so that the vane would be aligned with the low flowrates close to surge. Tests were initially conducted with six, eight and ten vanes and a turning angle of 10°. Based on these results the ten-vane design was selected for further investigation with 15 and 20° of vane turning; this led to vane exit angles of 60 and 55° respectively. All results are compared with those obtained with the standard vaneless diffuser configuration and it was shown that all designs increased and shifted the peak pressure ratio to reduced flowrates. The peak efficiency was reduced relative to that obtained with the vaneless diffuser. Despite the low-solidity configuration none of the vane designs provided a broad operating range without the use of a variable geometry configuration. This was attributed to the selection of a large leading edge vane angle.

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Fabrication Technology of Turbo Charger Housing for Riser Minimizing by Fusion S/W Application and its Experimental Investigation

Journal of the Korea Foundry Society ◽

10.7777/jkfs.2017.37.1.1 ◽

2017 ◽

Vol 37 (1) ◽

pp. 1-13 ◽

Cited By ~ 1

Author(s):

Hak-Chul Lee ◽

Pan-Ki Seo ◽

Chul-Kyu Jin ◽

Hyung-Yoon Seo ◽

Chung-Gil Kang

Keyword(s):

Experimental Investigation ◽

Fabrication Technology ◽

Turbo Charger

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Numerical and Experimental Analysis of the Thermo-Mechanical Load on Turbine Wheels of Turbochargers

Volume 5: Marine; Microturbines and Small Turbomachinery; Oil and Gas Applications; Structures and Dynamics, Parts A and B ◽

10.1115/gt2006-90526 ◽

2006 ◽

Cited By ~ 5

Author(s):

Tom Heuer ◽

Bertold Engels ◽

Achim Klein ◽

Horst Heger

Keyword(s):

Thermal Stresses ◽

Mechanical Load ◽

Experimental Testing ◽

Transient Temperature ◽

Heating Process ◽

Stress Distributions ◽

Validation Data ◽

Turbine Wheel ◽

Turbo Charger ◽

Design Deficiencies

CFD, FEA, and experimental testing have been combined in order to investigate the lifetime limiting design deficiencies of a turbine wheel in a turbo charger. Thermocouples have been applied to the same radial turbine wheel to provide boundary conditions and validation data for the simulations. The tests have been performed on a turbocharger gas-stand. Based on two steady state CHT-calculations for two distinctly different operating points the heating process of the wheel has been simulated in a transient temperature calculation. Since the resulting temperature gradients induce thermal stresses, the temperature distribution serves as a boundary condition for the subsequent structural analysis. To obtain realistic stress distributions, centrifugal forces also need to be accounted for. In this way, the influence of the thermal stress on the overall stress can be evaluated.

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Thermomechanical analysis of a turbo charger turbine wheel based on CHT-calculations and measurements

8th International Conference on Turbochargers and Turbocharging ◽

10.1016/b978-1-84569-174-5.50021-x ◽

2006 ◽

pp. 235-250

Author(s):

Tom Heuer ◽

Bertold Engels ◽

Horst Heger ◽

Achim Klein

Keyword(s):

Thermomechanical Analysis ◽

Turbine Wheel ◽

Turbo Charger

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Comprehensive PM motor controller design for electrically assisted turbo-charger systems

2013 IEEE Energy Conversion Congress and Exposition ◽

10.1109/ecce.2013.6646793 ◽

2013 ◽

Cited By ~ 6

Author(s):

SeHwan Kim ◽

Jul-Ki Seok

Keyword(s):

Controller Design ◽

Motor Controller ◽

Electrically Assisted ◽

Turbo Charger

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Conjugate Flow and Heat Transfer Investigation of a Turbo Charger: Part I — Numerical Results

Volume 3: Turbo Expo 2003 ◽

10.1115/gt2003-38445 ◽

2003 ◽

Cited By ~ 18

Author(s):

Dieter Bohn ◽

Tom Heuer ◽

Karsten Kusterer

Keyword(s):

Heat Transfer ◽

Three Dimensional ◽

Heat Fluxes ◽

Inlet Temperature ◽

Three Dimensional Model ◽

Flow And Heat Transfer ◽

Turbine Inlet ◽

Turbo Charger ◽

Conjugate Calculation

In this paper a three-dimensional conjugate calculation has been performed for a passenger car turbo charger. The scope of this work is to investigate the heat fluxes in the radial compressor which can be strongly influenced by the hot turbine. As a result of this, the compressor efficiency may deteriorate. Consequently, the heat fluxes have to be taken into account for the determination of the efficiency. To overcome this problem a complex three-dimensional model has been developed. It contains the compressor, the oil cooled center housing, and the turbine. 12 operating points have been numerically simulated composed of three different turbine inlet temperatures and four different mass flows. The boundary conditions for the flow and for the outer casing were derived from experimental test data (part II of the paper). Resulting from these conjugate calculations various one-dimensional calculation specifications have been developed. They describe the heat transfer phenomena inside the compressor with the help of a Nusselt number which is a function of an artificial Reynolds number and the turbine inlet temperature.

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Design and Optimization of Core Balancing Fixture in Vibration Sorting Rig (VSR)

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.852.568 ◽

2016 ◽

Vol 852 ◽

pp. 568-574

Author(s):

Karumanchi Vinay Prakash ◽

R. Bakthavachalam ◽

M. Senthil Kumar

Keyword(s):

Work Piece ◽

Fixture Design ◽

Cfd Analysis ◽

Turbine Wheel ◽

Compressor Wheel ◽

Rotating Speed ◽

Design And Optimization ◽

The Core ◽

Turbo Charger

This work studies the design of a fixture used in vibration sorting rig which is used for core balancing in turbo charger. The main objective of this paper is to design and optimize the fixture for holding the turbo chargers. To balance the core of turbo charger, turbine wheel and compressor wheel should balance which is turbine wheel is placed into the fixture. This paper analyzes the existing fixture and proposed new design. The fixture runs at higher speeds which is why we have to put the more concentration on the fixture design. The small issue in the fixture design results more problems due to high rotating speed of the turbine wheel of turbo charger. Many of the parts rejects due to poor fixture design. New fixture design is based on several aspects like design of work piece, rotating speed etc. The CFD analysis on the existing and proposed design is carried out. The results obtained were compared with existing fixture design.

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