Analysis of parameters of the engine working in two thermodynamic cycles

The article presents an experimental research conducted on a test engine based on a driving unit with a spark ignition Toyota Yaris 1,300 cm 3, equipped with two systems of power supply i.e.: fundamental and ignition. Two methods of initiating the combustion process were applied in the engine i.e.: from spark ignition and after it has turned off - the combustion is initiated by means of the injection of the ignition dose. The fundamental task of The adaptation of two power supply systems for a combustion engine is the possibility of work in two thermodynamic circulations, which permits better conditions for creating the fuel-air mixture, which translates directly into significant improvement of the engine's working parameters accuracy, such as general efficiency as well as the individual fuel consumption. The experimental research presented in this work consist of designing and construction of an engine with two injection systems with a controller managing the automatic change of the work mode, as well as the execution of the analysis of the chosen work parameters in a two-cycle engine i.e.: - comparative research on the engine's work performance, when it works with a spark ignition and when it is initiated with the autoignition of the ignition dose, - determining the increase in the general efficiency of the two-cycle engine, working with the injection of the ignition dose, in comparison with the conventional power supply system with the initiation of the combustion process from an electric discharge between the spark plug electrodes. Applying the two-cycle engine with two power supply systems with an automatic spark ignition presented in this article, along with the electronically controlled system of changing the ignition method, increases the general efficiency in the total range of rotational speed, compared with the conventional engines with the automatic spark ignition