Analysis of the Influence of Fuel Dose on the Electrical Parameters of the Starting Process of a Single-Cylinder Diesel Engine

The start-up is a transient state of operation of a compression-ignition engine during which many negative phenomena occur that affect the technical condition of the engine and its electrical devices and the surroundings. The start-up process of an compression-ignition engine is influenced by many factors, such as: technical condition of the starting system, technical condition of the engine, battery charge level, lubricant properties, engine standstill time, temperature of the engine, etc. Mechanical energy is required to start the engine, supplied by an electric starter by drives the engine's crankshaft. The paper presents the results of experimental tests of electrical parameters of the single-cylinder diesel engine start-up process at variable fuel injection parameters under ambient temperature conditions. Higher values of the measured electrical parameters ( Imax, Umin, Pmax, Pmed) ) were obtained for the nominal FD1 fuel dose, compared to the tests with an increased FD2 fuel dose. Knowledge about the operating parameters of the electric starter during the start-up process is important for the engine user (vehicle driver) and of course for designers of modern combustion engine starting systems as well as service personnel.