Performance Development of the Holset Variable Geometry Turbocharger

Franklin, P C

doi:10.4271/890646

Cited by 10 publications

(1 citation statement)

References 6 publications

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“…The theory of VNT was studied at the end of the 20 th century, Watson and Janota [1] built key equations for modeling and simulating. Franklin [7] presented the highlighting performances of VNT which was better than the fixed one. In the early 21 st century, Lars Eriksson et al [8] built the mean value model of VNT turbocharger and evaluated the infl uences of nozzle opening degree to engine performances.…”

Section: Introduction / Uvodmentioning

confidence: 96%

Modelling and Experimental Validation of a VNT Turbocharger for Improving Performances of a Marine Diesel Generator Engine

2020

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This paper presents modelling and experimental validation for improving the performances of a marine diesel generator engine. Based on the diesel engine theory, the laws of conservation of energy, and the principle of movement of fl ow through turbocharger nozzle, a mathematical model of a real turbocharged engine was built, concentrating on the mathematic model of fl ow through nozzles. This model is simulated by Matlab/Simulink program, the results of simulation showed the relationships between the engine and the turbocharger, the turbine and the compressor, and between the nozzles and the turbocharger. The experiments were carried out to validate this model, the errors between the simulation and measure were acceptable. The measure and simulation results also determined that at the low load conditions (≤50% load) engine performances can be improved by adjusting nozzle opening degree (from fully opening to 90% and 80% opening). Sažetak Ovaj rad prikazuje modeliranje i eksperimentalnu validaciju za poboljšanje performansi brodskog motora s dizel generatorom. Na temelju teorije dizel motora, zakona očuvanja energije i načela kretanja protoka kroz mlaznicu turbopuhala izrađen je matematički model pravog motora s turbopunjenjem, s fokusom na matematičkom modelu protoka kroz mlaznice. Ovaj model je simuliran programom Matlab / Simulink, a rezultati simulacije pokazali su odnos motora i turbopuhala, turbine i kompresora, te mlaznica i turbopuhala. Eksperimenti su provedeni kako bi se provjerio ovaj model, a pogreške između simulacije i mjere bile su prihvatljive. Rezultati mjerenja i simulacije također su odredili da se pri uvjetima malog opterećenja (≤ 50 % opterećenja) performanse motora mogu poboljšati podešavanjem stupnja otvaranja mlaznica (od potpunog otvaranja do 90 % i 80 % otvaranja).

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Section: Introduction / Uvodmentioning

confidence: 96%

Modelling and Experimental Validation of a VNT Turbocharger for Improving Performances of a Marine Diesel Generator Engine

2020

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Variable Geometry Turbocharger Technologies for Exhaust Energy Recovery and Boosting‐A Review

Feneley

Pesiridis

Andwari

2017

Renewable and Sustainable Energy Reviews

149

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The Use of Neural Nets for Matching Fixed or Variable Geometry Compressors With Diesel Engines

Nelson

Filipi

Assanis

2003

Journal of Engineering for Gas Turbines and Power

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A technique which uses trained neural nets to model the compressor in the context of a turbocharged diesel engine simulation is introduced. This technique replaces the usual interpolation of compressor maps with the evaluation of a smooth mathematical function. Following presentation of the methodology, the proposed neural net technique is validated against data from a truck type, 6-cylinder 14-liter diesel engine. Furthermore, with the introduction of an additional parameter, the proposed neural net can be trained to simulate an entire family of compressors. As a demonstration, a family of compressors of different sizes is represented with a single neural net model which is subsequently used for matching calculations with intercooled and nonintercooled engine configurations at different speeds. This novel approach readily allows for evaluation of various options within a wide range of possible compressor configurations prior to prototype production. It can also be used to represent the variable geometry machine regardless of the method used to vary compressor characteristics. Hence, it is a powerful design tool for selection of the best compressor for a given diesel engine system and for broader system optimization studies.

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Performance Development of the Holset Variable Geometry Turbocharger

Cited by 10 publications

References 6 publications

Modelling and Experimental Validation of a VNT Turbocharger for Improving Performances of a Marine Diesel Generator Engine

Modelling and Experimental Validation of a VNT Turbocharger for Improving Performances of a Marine Diesel Generator Engine

Variable Geometry Turbocharger Technologies for Exhaust Energy Recovery and Boosting‐A Review

The Use of Neural Nets for Matching Fixed or Variable Geometry Compressors With Diesel Engines

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