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- W2885457928 abstract "This paper presents the results of the computational research investigations, with design and operating parameters, for the possible turbo-charging of the conventional naturally aspirated multi-cylinder spark ignition engine used for medium load automotive applications. The computational thermodynamic investigations were done in the professional internal combustion engine simulation software AVL BOOST. The software solves the conservation equations for mass, energy and momentum for different components of the modeled engine using numerical methods. First the engine was modeled for its naturally aspirated version. The engine mapping, for this baseline engine, was done with the commercially available petrol and ethanol fuels. Next the engine was modeled for its turbocharged and intercooled version. The results were computed for the octane number requirements for both petrol and ethanol fuels for the turbocharged version of the engine to eliminate any possibility of knock. The results for the octane number requirements for petrol and ethanol were computed under variable speed and variable air-fuel ratio operation. The investigations were also done by changing the start of combustion timing which corresponds to optimization of new MBT timing for the turbocharged version of the engine with possible suitable fuels. It was observed from the results that the octane number of the commercial petrol has to be upgraded from 98 to 170 in order to use it in the turbocharged version of the spark ignition engine over its entire range of speed and load. It was also observed that octane number of commercial ethanol needs to be upgraded from 108 to 160 so that the engine could be run over its entire range of speed and load. This type of modifications in the engine design and the use of high octane number rated petrol and ethanol can boost the power of the petrol based engine by 140% and the ethanol based engine by 122%. The turbocharged version of the spark ignition engine operated with commercial ethanol fuel is possible for high speed applications only with normal combustion." @default.
- W2885457928 created "2018-08-22" @default.
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- W2885457928 date "2018-01-01" @default.
- W2885457928 modified "2023-09-27" @default.
- W2885457928 title "Computational Thermodynamic Requirements for Possible Turbo-charging of a Spark Ignition Engine with Petrol and Ethanol Fuels" @default.
- W2885457928 hasPublicationYear "2018" @default.
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