Adjustment characteristics of the diesel engine operating on natural gas

Abstract

The article presents adjustment characteristics of the diesel engine in terms of the fuel injection advance angle during gas-diesel process operation. Currently the problem of reducing production costs is relevant for many producers. In the agricultural industry a considerable cost item consist of fuel costs for mobile energy vehicle. One way to reduce these costs is using of alternative cheaper fuel types. The natural gas is one of such fuels. The most common type of engine in agriculture is a diesel. In spite of the large number of conducted works to convert diesel engines to natural gas, the question of conversion high-powered low-dimension diesel engines has not been sufficiently investigated. As an object of research D-245.7 (4CHN11/12,5) was chosen. The conversion of diesel engine to gas-diesel process is the purpose of an investigation. One of the stages of the research was conducting bench tests with taking adjustment characteristics of the fuel injection advance angle. As a result of bench tests the parameters of combustion process, characteristics of heat emission, effective indicators of the diesel engine at various values of the fuel injection advance angle during work on diesel and gas-diesel processes are determined. The main following conclusions are: 1) during the diesel engine’s operation on the gas-diesel process an increase of temperature, pressure, the rate of pressure rise in cylinder are observed; 2) the power parameters of diesel engine during the work on gas-diesel process are completely preserved; 3) under such conversion the diesel engine to natural gas one of recommendations is a reduction of the fuel injection advance angle.