Abstract
Working system of engine is definite by rotation and load, but besides those, it requires knowledge about thermal system, that is machine part temperature situation, the temperature of cooling fluid, admitted air temperature, evacuation gases temperature height corrections.
Engine load suits effective power Pe delivered by engine to a certain rotation. The load is regulated through speed pedal, controlling Mono-Motronic mixture quality system and air quality of other systems. Outside engine action applied of consumer (motor vehicle or brake trying on trial engine stand) represent engine attempt when thermal system of the engine doesn´t vary in time, working system is stabilized, contrary the engine is working in provisional system.
Keywords: gasoline, injection, lambda, effective power, revolution.