When the size of the diesel engine generator set decreases, the temperature rises rapidly, reaching the ignition point of diesel. The diesel is ignited, the mixed gas burns violently, and its volume expands rapidly, pushing the piston down, which is called ‘work’.

Each cylinder performs work in a certain order, and the thrust acting on the piston becomes the force that pushes the crankshaft to rotate through the connecting rod, thereby driving the crankshaft to rotate. Using the principle of ‘electromagnetic induction’, the generator will output an induced electromotive force, and a current can be generated through a closed load loop. Only the basic working principle of the generator set is described here. In order to obtain usable and stable power output, a series of diesel engine and generator control, protection devices and circuits are also needed.