Model tests of a marine diesel engine powered by a fuel-alcohol mixture

The article presents the definition of bioindustry, in particular biorefinery. The technology for obtaining synthetic fuel EtG (Ethanol to Gasoline) in a plant using bioethanol from food waste was presented. The physicochemical properties of EtG fuel were presented. EtG fuel stands out due to its limited content of benzene and sulfur and a low content of mechanical impurities and heavy metals. EtG fuel can be considered a replacement fuel for motor gasoline. The results of exhaust emissions tests from vehicles with spark-ignition engines in the WLTC test on a hot and cold engine were presented. It was found that EtG fuel is characterized by lower specific distance emissions of CO, NOx and CH4 and slightly higher specific distance emissions of NMHC when starting a cold engine compared to gasoline, while the specific distance emission of CO2 for both fuels were very similar.

Section: Introductionmentioning

confidence: 99%

Properties of substitute motor fuels produced from ethanol in biorefineries

Grzelak,

Chłopek,

Szczepański

2024

“…Many publications refer to the use of alcohol fuels in internal combustion engines and their impact on the operating parameters of such engines such as vibration and the way they are measured [6,27], noise intensity [13], energy efficiency [2] or reduction in the number of harmful exhaust components [15,23]. Ongoing research has shown that the use of alcohol addi-tives and alcohol as a stand-alone fuel both in sparkignition engines [16,25] and diesel engines [17,30] can significantly affect the engine performance. In the case of spark-ignition engines, ethyl and methyl alcohol fuels are among the most widely studied alternative fuels due to their relatively low viscosity and high vapor pressure.…”

Section: Introductionmentioning

confidence: 99%

Study of the effect of ignition crank angle and mixture composition on the performance of a spark-ignition engine fueled with ethanol

Jakliński,

Czarnigowski,

Ścisłowski

2024

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 1,500 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 anglewas 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%.

“…However, it is the extremely wide application of ICE has caused a number of global problems, related to the depletion of world oil reserves, atmospheric pollution with toxic substances, global warming etc. There is a solution that allows to partially solve the mentioned problems through application of alternative fuels in internal combustion engines [3,7,10,13,15]. In this content a water-fuel emulsion (WFE) could be treated as one of the most promising type of alternative fuels due to the combination of the unique properties, characteristics, production and operation features [1,2,5,14].…”

Section: Introductionmentioning

confidence: 99%

Improving the performance of diesel engines fueled with water-fuel emulsion

Samoilenko¹,

Savchenko²,

Кравченко³

2023

Due to unique properties, production and operation features, water-fuel emulsion (WFE) could be considered as one of the most promising type of alternative fuels for diesel engines. Experimental research showed that comparing to traditional diesel fuel, application of water-fuel emulsion allows to reduce nitrogen oxides and soot emissions, which is due primarily to a decrease in the level of maximum temperatures in the engine cylinder, as well as a more uniform distribution of fuel over the combustion chamber volume thanks to its secondary dispersion (micro-explosion phenomena). To control the stability of water-fuel emulsion properties during engine operation it is recommended to install water content sensor in the fuel supply system.