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- Title
Study of the effect of ignition crank angle and mixture composition on the performance of a spark-ignition engine fueled with ethanol.
- Authors
JAKLIŃSKI, Piotr; CZARNIGOWSKI, Jacek; ŚCISŁOWSKI, Karol
- Abstract
The publication presents the results of the measurements of the operating parameters of a spark-ignition engine fueled with 95-octane unleaded gasoline (ES95) and ethyl alcohol, approx. 92%. The measurements were carried out at a constant load: an engine speed of 1500 rpm and a constant pressure in the intake system - MAP = 0.45 bar. For each type of fuel, the measurements were carried out in two series for two variables. The ignition crank angle was varied in the range of 0°÷40° and the mixture composition λ in the range of 0.85-1.25. The recorded engine performance parameters included torque, intake manifold pressure, intake air temperature, exhaust gas temperature and temporal fuel consumption; and exhaust gas composition was examined in terms of carbon monoxide, hydrocarbons and nitrogen oxides. The study showed that an ethanol-fueled engine has lower average efficiency compared to a gasoline one. The highest efficiency for ethanol was obtained for rich mixtures in the range λ = 0.85-1.0 and at high ignition advance angles. The use of alcohol fuel showed a very favorable effect on the composition of exhaust gas and a significantly lower content of harmful exhaust components was demonstrated. For the same operating points, carbon monoxide content was reduced by an average of 15%, and hydrocarbons and nitrogen oxides by an average of 80%.
- Subjects
EXHAUST gas from spark ignition engines; ETHANOL; ALTERNATIVE fuels for spark ignition engines; NITROGEN oxides; BIOMASS energy; ALTERNATIVE fuels
- Publication
Combustion Engines (2300-9896), 2024, Vol 197, Issue 2, p56
- ISSN
2300-9896
- Publication type
Article
- DOI
10.19206/CE-174888