Izvorni znanstveni članak

https://doi.org/10.17559/TV-20211220232130

Correlation between Emission and Combustion Characteristics with the Compression Ratio and Fuel Injection Timing in Tribologically Optimized Diesel Engine

Saša Milojević orcid.org/0000-0003-0569-047X ; University of Kragujevac, Faculty of Engineering, Department for Motor Vehicles and Engines, Kragujevac 34000, Sestre Janjić 6, Serbia
Slobodan Savić ; University of Kragujevac, Faculty of Engineering, Department for Applied Mechanics and Automatic Control, Kragujevac 34000, Sestre Janjić 6, Serbia
Dejan Marić orcid.org/0000-0002-0142-1750 ; University of Slavonski Brod, Mechanical Engineering Faculty in Slavonski Brod, Trg Ivane Brlić Mažuranić 2, HR-35000 Slavonski Brod, Croatia
Ondrej Stopka orcid.org/0000-0002-0932-4381 ; Institute of Technology and Business in České Budějovice, Faculty of Technology, Department of Transport and Logistics, Czech Republic
Božidar Krstić orcid.org/0000-0002-2578-9074 ; University of Kragujevac, Faculty of Engineering, Department for Motor Vehicles and Engines, Kragujevac 34000, Sestre Janjić 6, Serbia
Blaža Stojanović orcid.org/0000-0003-4790-2856 ; University of Kragujevac, Faculty of Engineering, Department for Mechanical Constructions and Mechanization, Kragujevac 34000, Sestre Janjić 6, Serbia

Sažetak

Diesel engines are economical thanks to their combustion process characteristics, which is why they have a high noise emission level as well as exhaust emissions of nitrogen oxide and particulate matters. By continuously changing the value of compression ratio, it is possible to control the power and emissions. Implementation of variable compression ratio has many benefits, such as being able to work with different types of fuel. In this way, it is possible to optimize the combustion process for operation with minimum fuel consumption and emission generation, so that diesel engines can be applied to the framework of future hybrid vehicle concepts, and so forth. As far as the crucial objective of the manuscript is concerned, experimental diesel engine investigation was performed on a roller test-bench by using zero-dimensional computer model (specifically AVL IndiCom Indicate Software). Engine indication was executed with the factory compression ratio value and with three lower values. During our examination, the change in the compression ratio value was achieved by changing the volume of a combustion chamber at a piston-bowl. The results of laboratory research on the experimental engine are presented in the paper when discussing a series of specific parameters (characteristics), such as compression ratio, fuel injection timing, engine speed, as well as load influence on combustion process and exhaust emissions.

Ključne riječi

combustion characteristics; diesel engine; emission; fuel injection timing; variable compression ratio

Hrčak ID:

279468

URI

https://hrcak.srce.hr/279468

Datum izdavanja:

17.6.2022.

Posjeta: 890 *