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Constantine D. Rakopoulos

Researcher at National Technical University of Athens

Publications -  124
Citations -  8884

Constantine D. Rakopoulos is an academic researcher from National Technical University of Athens. The author has contributed to research in topics: Diesel engine & Diesel fuel. The author has an hindex of 45, co-authored 120 publications receiving 8160 citations.

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Comparative performance and emissions study of a direct injection Diesel engine using blends of Diesel fuel with vegetable oils or bio-diesels of various origins

TL;DR: In this article, an extended experimental study is conducted to evaluate and compare the use of various Diesel fuel supplements at blend ratios of 10/90 and 20/80, in a standard, fully instrumented, four stroke, direct injection (DI), Ricardo/Cussons ‘Hydra’ Diesel engine located at the authors' laboratory.
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Effects of butanol–diesel fuel blends on the performance and emissions of a high-speed DI diesel engine

TL;DR: In this article, an experimental investigation is conducted to evaluate the effects of using blends of n-butanol (normal butanol) with conventional diesel fuel, with 8, 16% and 24% (by volume) nbutanol, on the performance and exhaust emissions of a standard, fully instrumented, four-stroke, high-speed, direct injection (DI), Ricardo/Cussons ‘Hydra’ diesel engine located at the authors' laboratory.
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Emission characteristics of high speed, dual fuel, compression ignition engine operating in a wide range of natural gas/diesel fuel proportions

TL;DR: In this article, an experimental investigation has been conducted to examine the effects of the total air-fuel ratio on the efficiency and pollutant emissions of a high speed, compression ignition engine located at the authors' laboratory, where liquid diesel fuel is partially substituted by natural gas in various proportions, with the natural gas fumigated into the intake air.
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Combustion heat release analysis of ethanol or n-butanol diesel fuel blends in heavy-duty DI diesel engine

TL;DR: In this paper, an experimental study was conducted to evaluate the effects of using blends of diesel fuel with either ethanol in proportions of 5% and 10% or n -butanol in 8% and 16% (by vol.), on the combustion behavior of a fully-instrumented, six-cylinder, turbocharged and after-cooled, heavy duty, direct injection (DI), ‘Mercedes-Benz’ engine installed at the laboratory.
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Effects of ethanol-diesel fuel blends on the performance and exhaust emissions of heavy duty DI diesel engine

TL;DR: In this article, an experimental investigation is conducted to evaluate the effects of using blends of ethanol with conventional diesel fuel, with 5% and 10% (by vol.) ethanol, on the performance and exhaust emissions of a fully instrumented, six-cylinder, turbocharged and after-cooled, heavy duty, direct injection (DI), Mercedes-Benz engine, installed at the authors’ laboratory, which is used to power the mini-bus diesel engines of the Athens Urban Transport Organization sub-fleet with a view to using bio-ethanol produced from Greek feedstock.