Analysis of Turbocharger Non-Adiabatic Performance

Shaaban, S.; Seume, Joerg R.

doi:10.1016/b978-1-84569-174-5.50012-9

Cited by 39 publications

(13 citation statements)

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“…In order to assess the effects of heat transfer on the compressor efficiency, in common with other researchers, the non-adiabatic efficiency is introduced [3]. This efficiency represents the apparent compressor efficiency measured under non-adiabatic operating conditions and it is defined as the ratio between the isentropic and the actual enthalpy rise:…”

Section: Non-adiabatic Efficiencymentioning

confidence: 99%

“…Seume [3] identified the main parameters affecting the deterioration of the compressor efficiency in hot conditions through a theoretical and experimental investigation. The compressor peripheral Mach number was found to be one of the most important parameters affecting the turbocharger non-adiabatic performance.…”

Section: Introductionmentioning

confidence: 99%

“…Seume [3] and Abdelhamid et al [8] measured the turbocharger performance at low rotational speeds, developing a method to predict the turbine and compressor performance in non-adiabatic conditions. Chapman et al [9] developed a finite element analysis of a turbocharger to determine the heat fluxes going through the main bodies.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Heat transfer analysis in a turbocharger turbine: An experimental and computational evaluation

Romagnoli

Martinez-Botas

2012

Applied Thermal Engineering

102

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Section: Non-adiabatic Efficiencymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Heat transfer analysis in a turbocharger turbine: An experimental and computational evaluation

Romagnoli

Martinez-Botas

2012

Applied Thermal Engineering

102

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“…Those differences force a heat flux from the hot side (the turbine) to the cold side, typically the oil but also to the compressor for low load regions. Differences in radial surface temperature are small compared to the axial distribution what allows the simplification of the internal heat transfer problem into the 1D hypothesis [20].…”

Section: Turbocharger Heat Transfer Model Descriptionmentioning

confidence: 99%

“…In addition experimental instrumentation will be easier and so the validation of the model. Models proposed by Bohn [19] and Shaaban [15,20] make a distinction between the heat transfer that takes place after and before the rotor. With this level of detail, difficulties in instrumentation for experimental characterization increases.…”

Section: Introductionmentioning

confidence: 99%

Importance of Heat Transfer Phenomena in Small Turbochargers for Passenger Car Applications

Serrano¹,

Olmeda²,

Arnau³

et al. 2013

SAE Int. J. Engines

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Nowadays turbocharging the internal combustion engine has become a key point in the reduction on pollutant emissions and the improvement on engine performance. The matching between the turbocharger and the engine is vital due to the highly unsteady flow the turbocharger works with. In the present paper the importance of the heat transfer phenomena inside small automotive turbochargers will be analyzed. This phenomenon will be studied from the point of view of both the turbine and the compressor in one-dimensional modelling. The goodness of the model will be demonstrated predicting turbine and compressor outlet temperatures. An accurate prediction of these parameters will be key designing the intercooler and the after treatment devices. A series of tests in a gas stand with steady and pulsating hot flow in the turbine side will be modeled to show the good agreement in turbocharger enthalpies prediction.

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Numerical and experimental analysis on the effects of turbocharged compressed bio-methane-fueled automotive spark-ignition engine

Alexander

Porpatham

2021

Clean Techn Environ Policy

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The implementation of recent emission norms has caused the automotive industries to develop advanced technologies for gaseous fuelled SI engines. This research focused on the comparison of turbocharged Compression Ratio (CR) 10.5:1 and naturally aspirated (NA) 12.5:1 for Compressed Bio-Methane (CBM) fuelled SI engine. The original port fuel injected automotive Compressed Natural Gas (CNG) Spark Ignition (SI) engine with 15.5 kW at 3400 rpm was made to function with CBM fuel under full throttle conditions at given CR. Also, two turbochargers T1 and T2 were analysed and validated using ANSYS turbo-machinery numerical package. T1 generated a higher-pressure ratio than T2 and was preferable. The simulation study outcomes infer that entropy generation for T1 at a 1.3 bar is less than 1.5 bar gave a better transient response. The experimental comparison was made between CR of 10.5:1 turbocharged and naturally aspirated CR of 12.5:1. At CR of 10.5:1, 1.3 bar boost pressure, brake power increased by 19.3%, reduced fuel consumption by 10.1%, and reduced hydro carbon (HC) and Carbon monoxide (CO) emissions 42.9% and 38.3%, when compared to NA CR of 12.5:1. On the whole, the downsized CR of 10.5:1 turbocharging exhibit better performance and reduced thermal loading when compared to higher CR of 12.5:1.

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Analysis of Turbocharger Non-Adiabatic Performance

Cited by 39 publications

References 0 publications

Heat transfer analysis in a turbocharger turbine: An experimental and computational evaluation

Heat transfer analysis in a turbocharger turbine: An experimental and computational evaluation

Importance of Heat Transfer Phenomena in Small Turbochargers for Passenger Car Applications

Numerical and experimental analysis on the effects of turbocharged compressed bio-methane-fueled automotive spark-ignition engine

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