Effects of Ethanol Admixtures with Gasoline on Fuel Atomization Characteristics Using High-Pressure Injectors

Zbigniew Stępień, Ireneusz Pielecha, Filip Szwajca and Wojciech Cieślik
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Zbigniew Stępień: Oil and Gas Institute—National Research Institute, 31-503 Krakow, Poland
Ireneusz Pielecha: Faculty of Civil and Transport Engineering, Poznan University of Technology, 60-965 Poznan, Poland
Filip Szwajca: Faculty of Civil and Transport Engineering, Poznan University of Technology, 60-965 Poznan, Poland
Wojciech Cieślik: Faculty of Civil and Transport Engineering, Poznan University of Technology, 60-965 Poznan, Poland

Energies, 2022, vol. 15, issue 8, 1-18

Abstract: Correct fuel atomization is an important parameter in the process of preparing a combustible mixture. Distortions of the atomization can lead to unfavorable effects in the combustion process. This paper presents an analysis of the fuel atomization characteristics of high-pressure fuel injector tests. Optically tested injectors were previously tested in a 48 h engine test carried out in accordance with the CEC F-113-KC procedure, using alternative fuels with ethanol blends. As a result of engine tests on fuels containing various amounts of ethanol admixture, the injectors became contaminated. The effect of the deposits on the geometric atomization indicators was determined. This paper focuses on analyzing the area of the atomized spray in a constant volume chamber at different parameters, reflecting real operating conditions. We found that the addition of ethanol (20%) increases the observed spray area for all test points. Complementing the quantitative results is a qualitative analysis of fuel atomization for injector tests previously run on varying fuels.

Keywords: SI combustion engine; optical measurements of fuel atomization; high-pressure injectors; ethanol admixture; injector deposits; fuel atomization quality (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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