International Scientific Journals
of Scientific Technical Union of Mechanical Engineering "Industry 4.0"

In the Division of Vehicle Engineering ,Wroclaw University of Technology, there is realized the grant which aim is to work out the innovative compact EKOMPACT module- the installation of electric energy generation from biomass renewable resources by new technology. Research results (primarily simulation) provide necessary data for any modification of the installation in a way that the implementation of a new solution will be possible in diverse locations which are characterized by different working conditions.

In the present paper the issue of external heat balance in the diesel engine is presented. The methodology of heat balance estima- tion, as well as the comparison of the researches results concerning engine with the common rail injection system, which is fed by mineral diesel oil and BMD biofuel has been presented. The impact of biofuel on the nature of changes in the heat balance has been estimated. The researches were performed on the measurement station based on the 13 points ESC test. It has been stated that the use of fuel assigned in the ESC test in the engine fed by biofuel (BDM) slightly increases in comparison to the engine fed by mineral diesel oil (ON). However, there can be noticed the change of the flow of energy input in the heat balance of the engine fed by both types of fuel.

The paper presents a discussion of the combustion processes in the engine piston, in terms of ignition delay. The problem of the physical and chemical ignition delay is discussed and equations which allow the calculation of ignition delay based on the theory of com- bustion processes are presented. The paper proposes the use of a catalytic coating in the combustion space in order to shorten the ignition delay. The results of studies made on single diesel engine are displayed. Studies have confirmed a significant effect of the catalyst on the combustion process and shortening the ignition delay. Internal combustion catalyst used as a coating made of ZrO2 activated Pt and Rh deposited on engine valves, caused a shortening of ignition delay of about 1 – 3 degrees of crankshaft rotation.