Effects of CNG addition in a diesel engine using diesel/n-heptane, diesel/toluene as pilot fuel

Abstract

The production processes of diesel engines have been interrupted due to the emissions restrictions that exist in the world. Because diesel engines have been proven to pollute the environment more than other types of engines. Therefore, efforts to reduce the emissions of diesel engines have gained momentum. At the beginning of these studies is the use of alternative fuels. Of these alternative fuels, the most important commercially available fuels are gas fuels. In gas fuels, liquefied petroleum gas (LPG) and compressed natural gas CNG have an important place. It is a known fact that there are some restrictions on the use of CNG in diesel engines. This study aimed to eliminate the negative effects of CNG, which is both an environmental and economical fuel, on the use of diesel engines. For this purpose, toluene and n-heptan were added to the diesel fuel used as pilot fuel by 2.5%, 5% and 10% by volume and given to each pilot fuel mixture from the CNG intake manifold equivalent to 20% and 40% of the liquid fuel consumed. Engine experiments with all fuel mixtures were repeated at 3000 rpm with 1 kW, 2 kW, 3 kW and 4 kW engine loads. With the addition of CNG to the N-heptan-doped pilot fuel, the brake specific fuel consumption and exhaust gas temperature increased, while the toluene fuel mixture increased fuel consumption and

The effects of the use of acetylene gas as an alternative fuel in a gasoline engine

“…CO2 emissions are a product of complete combustion. They are formed by the oxidation of C atoms in gasoline and acetylene gas by combining with sufficient O2 [47]. In addition, the amount of CO2 emissions in hydrocarbon fuels varies depending on the C/H ratio.…”