Performance and emissions of spark-ignition engines fuelled with petrol and methane

Abstract

Diesel engines using compression ignition are increasingly prohibited in cities due to increased environmental concerns. This could lead to greater use of low-powered spark-ignition (SI) engines in hybrid electrical cars. Using alternative fuels is important for SI engines. In this research study, performance and in-cylinder pressure data were collected from petrol- and methane-fuelled SI engines. A theoretical engine model was then verified using experimental data. The theoretical results for methane and petrol were finally compared for different engine speeds. The theoretical model used a combustion model and a chemical kinetics model to compare the effects of methane and petrol on engine performance and emissions at different engine speeds. Thanks to the high knock resistance of methane, the most suitable ignition advance value was decided for the methane-fuelled simulation by considering the maximum thermal efficiency to limit assumed reductions in indicated thermal efficiency and indicated mean effective pressure compared to previous studies. A slight reduction in nitrous oxides and carbon monoxide emissions was observed when using methane at full load.

Experimental investigation of various ethanol blends impact on combustion and emissions characteristics of diesel ignited dual fuel HCCI engine

“…Internal combustion engines (ICE) emit very hazardous exhaust gases in the environment that have an adverse effect on human health, and it is time to find alternate fuels for ICE. Alcohol-based fuels are the best option to reduce emissions and replace fossil fuels in ICE (Karagöz et al , 2020; Köten et al , 2020). Homogeneous charge compression ignition (HCCI) engine is the most advanced low-temperature combustion (LTC) technology.…”

Optimization of SI Engine Performance Operating with Low Octane Gasoline and Fuel Additives from Waste

“…Petroleum fuels (gasoline fuel) have been considered as one of the most widely used fuels in spark-ignition engines, which is a mixture of di erent types of hydrocarbons such as para ns, naphthenes, and aromatics. Its components vary depending on the source of crude oil and the re nery operations and chemical additives [1,2]. Petroleum fuels are classi ed according to several standard speci cations: evaporation rate at di erent temperatures, quantity of additive enhancers, sulfur content, and octane number which is considered to have the most e ect on the performance level of spark-ignition engines.…”