Natural gas as an alternative to liquid hydrocarbons on diesel-powered vessels

Abstract

Alternative fuels are increasingly being used in internal combustion engines (ICE) for various purposes. The practice of using alternative fuels indicates that their physicochemical properties make significant adjustments to the way the internal combustion engine workflow is organized and have a very significant impact on the effective and environmental performance of the engine and the entire power plant as a whole. The main task of designing a power plant with an internal combustion engine running on synthesis gas is to provide the necessary power, minimum fuel consumption in various operating modes, as well as minimum emissions of harmful substances into the environment, depending on the composition of the synthesis gas. It should be noted that the specific heat of combustion of synthesis gas is lower compared to traditional grades of fuel (25...30 MJ/kg), this leads to a significant reduction in the power of the marine engine. It is this factor that determines the use of synthesis gas as an additive to traditional fuel. Analysis of the available results and modeling of the combustion processes of liquefied natural gas on ships will allow to predict and determine further ways to improve fuel efficiency, power indicators and ecology of engines running on ethanol with forced ignition.