IS THE TWO-STROKE ENGINE HISTORY OR THE FUTURE OF MOTORING?

The paper presents a condensed history of the development of the two-stroke engine. The various stages of implementation of the most significant design solutions are described chronologically to achieve the best technical and economic performance for this type of power unit. The review of selected design solutions is supplemented with illustrations and concise comments. Examples of practical engineering solutions, thanks to which previous techno-economic problems were optimized, such as insufficient lubrication efficiency of individual parts and components, significant lubricating oil consumption, ...) are presented. The work was concluded with an analytical summary and conclusions indicating the need to undertake more intensified research into developing the two-stroke engine (in particular, the possibility of using ecological propellants). Consideration of the presented research directions (suggestions) can help, among other things, to optimize power processes, i.e., to minimize the negative environmental impact of a two-stroke internal combustion engine.