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Filip Szwajca is a research assistant at the Faculty of Civil and Transport Engineering at Poznan University of Technology since 2018. He achieved a Master's degree in Internal Combustion Engines. His major field of research includes engine processes, alternative powertrains, and turbocharging systems.
The negative effect of liquid and gaseous fuel combustion is toxic gases (i.e., carbon and nitrogen oxides NOx) and particulate matter (PM) formation. The content of harmful and toxic components of exhaust gases is strongly dependent on the quality and type of burnt fuel. Experimental research is required to verify the use of current technical and technological solutions for the production of electricity on farms, using various types of conventional fuels and biofuels. The aim of the current research was to comprehensively verify the use of commonly available fuels and biofuels without adapting the internal combustion engine. Gaseous fuels—propane-butane mixture (LPG), compressed natural gas (CNG) and biogas (BG)—were added to liquid fuels—methyl esters of higher fatty acids (RME) and diesel fuel (DF)—in six different power configurations to evaluate the effect on the emission of toxic gases: carbon monoxide (CO), nitric oxide (NO), nitric dioxide (NO2) and particulate matter (PM), and the efficiency of fuel conversion. The use of RME in various configurations with gaseous fuels increased the emission of oxides and reduced the emission of PM. Increasing the share of LPG and CNG significantly increased the level of NO emissions. The use of gaseous fuels reduced the efficiency of the generator, particularly in the case of co-firing with DF. For medium and high loads, the lowest decrease in efficiency was recorded for the RME configuration with BG. Taking into account the compromise between individual emissions and the configuration of RME with BG, the most advantageous approach is to use it in power generators.
Weronika Gracz; Damian Marcinkowski; Wojciech Golimowski; Filip Szwajca; Maria Strzelczyk; Jacek Wasilewski; Paweł Krzaczek. Multifaceted Comparison Efficiency and Emission Characteristics of Multi-Fuel Power Generator Fueled by Different Fuels and Biofuels. Energies 2021, 14, 3388 .
AMA StyleWeronika Gracz, Damian Marcinkowski, Wojciech Golimowski, Filip Szwajca, Maria Strzelczyk, Jacek Wasilewski, Paweł Krzaczek. Multifaceted Comparison Efficiency and Emission Characteristics of Multi-Fuel Power Generator Fueled by Different Fuels and Biofuels. Energies. 2021; 14 (12):3388.
Chicago/Turabian StyleWeronika Gracz; Damian Marcinkowski; Wojciech Golimowski; Filip Szwajca; Maria Strzelczyk; Jacek Wasilewski; Paweł Krzaczek. 2021. "Multifaceted Comparison Efficiency and Emission Characteristics of Multi-Fuel Power Generator Fueled by Different Fuels and Biofuels." Energies 14, no. 12: 3388.
Electrification of powertrain systems offers numerous advantages in the global trend in vehicular applications. A wide range of energy sources and zero-emission propulsion in the tank to wheel significantly add to electric vehicles’ (EV) attractiveness. This paper presents analyses of the energy balance between micro-photovoltaic (PV) installation and small electric vehicle in real conditions. It is based on monitoring PV panel’s energy production and car electricity consumption. The methodology included energy data from real household PV installation (the most common renewable energy source in Poland), electric vehicle energy consumption during real driving conditions, and drivetrain operating parameters, all collected over a period of one year by indirect measuring. A correlation between energy produced by the micro-PV installation and small electric car energy consumption was described. In the Winter, small electric car energy consumption amounted to 14.9 kWh per 100 km and was 14% greater than summer, based on test requirements of real driving conditions. The 4.48 kW PV installation located in Poznań produced 4101 kWh energy in 258 days. The calculation indicated 1406 kWh energy was available for EV charging after household electricity consumption subtraction. The zero-emission daily distance analysis was done by the simplified method.
Wojciech Cieslik; Filip Szwajca; Wojciech Golimowski; Andrew Berger. Experimental Analysis of Residential Photovoltaic (PV) and Electric Vehicle (EV) Systems in Terms of Annual Energy Utilization. Energies 2021, 14, 1085 .
AMA StyleWojciech Cieslik, Filip Szwajca, Wojciech Golimowski, Andrew Berger. Experimental Analysis of Residential Photovoltaic (PV) and Electric Vehicle (EV) Systems in Terms of Annual Energy Utilization. Energies. 2021; 14 (4):1085.
Chicago/Turabian StyleWojciech Cieslik; Filip Szwajca; Wojciech Golimowski; Andrew Berger. 2021. "Experimental Analysis of Residential Photovoltaic (PV) and Electric Vehicle (EV) Systems in Terms of Annual Energy Utilization." Energies 14, no. 4: 1085.
The greenhouse effect and overall climate changes are the main reasons for developing ecological powertrain units dedicated to road vehicles. An electrical drivetrain without using conventional combustion engines fueled by hydrocar-bon fuels is an effective method to significantly reduce CO2 emissions from the fleet. It is particularly vital in 2020 emis-sion regulations aspects, and continuously the number of vehicles increasing. In this paper battery electric drive system of a small size passenger car was analyzed in terms of two different drive modes in cooperation with two recuperative braking modes. The research was carried out with real driving condition test requirements and driving parameters re-cording. Based on data obtained from OBD signals, energy flow and torque distribution have been specified. In results, overall reducing energy consumption has been achieved with ECO mode compared to normal mode. Selection of the driving mode ECO has a positive impact on reducing the state of charge saving more than 5%, taking into account the whole RDC test; greater energy consumption reductions were observed in selected test areas.
Wojciech Cieślik; Filip Szwajca; Jacek Golimowski. The possibility of energy consumption reduction using the ECO driving mode based on the RDC test. Aim Your Enthusiasm: Targeting Increased Middle Class Health Insurance Tax Credits 2020, 182, 59 -69.
AMA StyleWojciech Cieślik, Filip Szwajca, Jacek Golimowski. The possibility of energy consumption reduction using the ECO driving mode based on the RDC test. Aim Your Enthusiasm: Targeting Increased Middle Class Health Insurance Tax Credits. 2020; 182 (3):59-69.
Chicago/Turabian StyleWojciech Cieślik; Filip Szwajca; Jacek Golimowski. 2020. "The possibility of energy consumption reduction using the ECO driving mode based on the RDC test." Aim Your Enthusiasm: Targeting Increased Middle Class Health Insurance Tax Credits 182, no. 3: 59-69.
Lean air-gas mixture combustion systems seem to be very promising solutions for IC engines in terms of lower emission indexes and higher thermal efficiency, especially in part-load operation. The main problem however is the necessity to provide the bigger activation energy for ignition of lean and very lean mixtures. In several publications and in research performed by the authors of this paper it has been confirmed, that the implementation of turbulent jet ignition (TJI) results in significantly faster inflammation of lean CNG/air mixture due to the improvement in on-ignition mechanism. The TJI-system consists of two chambers connected with nozzles. The orifices generate complex charge movement and decrease significantly the charge homogeneity in the pre-chamber, interrupting therefore first ignition process. The main research question of the investigations reported here was to improve this unfavorable property and to validate better inflammation ability in the pre-chamber by applying additional small auxiliary combustion chamber integrated with spark plug, creating together the 3-stage combustion system. Four types of combustion systems (conventional, PC spark plug, 2-stage and 3-stage) have been investigated for the comparative validation of main combustion efficiency indexes. The investigations have been performed at λ=1.5 using Rapid Compression Machine (Ɛ=15) with both indicating measurements and optical analysis for parameterization of inflammation intensity and flame front development. In the first step the study on the spark plug with additional combustion chamber has been performed, which has been than installed on the top part of the pre-combustion chamber of turbulent jet igniter. It resulted in bigger flame luminescence confirmed by bigger heat release rate, finally combined with earlier completing of combustion. Introduction of third stage resulted in shorter combustion duration of defined fuel quantity. The results achieved in the model engine have been verified in the one-cylinder research engine under real operation and complemented with the measurement of exhaust gas toxic compounds emission. Achieved results according charge maximal temperature, flame front development and combustion duration have been presented comparatively for all four investigated combustion systems.
Wojciech Bueschke; Filip Szwajca; Krzysztof Wislocki. Experimental Study on Ignitability of Lean CNG/Air Mixture in the Multi-Stage Cascade Engine Combustion System. SAE Technical Paper Series 2020, 1 .
AMA StyleWojciech Bueschke, Filip Szwajca, Krzysztof Wislocki. Experimental Study on Ignitability of Lean CNG/Air Mixture in the Multi-Stage Cascade Engine Combustion System. SAE Technical Paper Series. 2020; ():1.
Chicago/Turabian StyleWojciech Bueschke; Filip Szwajca; Krzysztof Wislocki. 2020. "Experimental Study on Ignitability of Lean CNG/Air Mixture in the Multi-Stage Cascade Engine Combustion System." SAE Technical Paper Series , no. : 1.
Gas engines are a viable source of propulsion due to the ecological indicators of gas fuels and the large amount of the needed natural resources. Combustion of lean homogeneous gas mixtures allows achieving higher thermal efficiency values, which is a key factor in current engine development trends. Using the spark-jet ignition system (also called as Turbulent Jet Ignition or Two-stage combustion) significantly improves the efficiency and stability of the combustion process, especially in the part-load operation on lean or very lean mixtures. This paper presents the impact of using two different fuel injection methods: Port Fuel Injection or Mixer on the operation stability of a gas engine designed for LDVs. Comparative studies of two different mixture preparation systems were carried out on a single-cylinder AVL 5804 test engine. By re-cording the cylinder pressure for a significant number of engine cycles, it became possible to determine the repeatability of engine operation and to correlate the results with the mixture formation system and the air-fuel ratio. In the performed research the beneficial effect of the mixer system application on the engine operation stability in the part-load conditions was found.
Filip Szwajca; Krzysztof Wisłocki. Thermodynamic cycles variability of TJI gas engine with different mixture preparation systems. Aim Your Enthusiasm: Targeting Increased Middle Class Health Insurance Tax Credits 2020, 181, 46 -52.
AMA StyleFilip Szwajca, Krzysztof Wisłocki. Thermodynamic cycles variability of TJI gas engine with different mixture preparation systems. Aim Your Enthusiasm: Targeting Increased Middle Class Health Insurance Tax Credits. 2020; 181 (2):46-52.
Chicago/Turabian StyleFilip Szwajca; Krzysztof Wisłocki. 2020. "Thermodynamic cycles variability of TJI gas engine with different mixture preparation systems." Aim Your Enthusiasm: Targeting Increased Middle Class Health Insurance Tax Credits 181, no. 2: 46-52.
Searching for further reduction of fuel consumption simultaneously with the reduction of toxic compounds emission new systems for lean-mixture combustion for SI engines are being discussed by many manufacturers. Within the European GasOn-Project (Gas Only Internal Combustion Engines) the two-stage combustion and Turbulent Jet Ignition concept for CNG-fuelled high speed engine has been proposed and thoroughly investigated where the reduction of gas consumption and increasing of engine efficiency together with the reduction of emission, especially CO2 was expected. In the investigated cases the lean-burn combustion process was conducted with selection of the most effective pre-combustion chamber. The experimental investigations have been performed on single-cylinder AVL5804 research engine, which has been modified to SI and CNG fuelling. For the analysis of the thermodynamic, operational and emission indexes very advanced equipment has been applied. Based on the measuring results achieved for different pre-chamber config-urations the extended methodology of polioptimization by pre-chamber selection and the shape of main chamber in the piston crown for proposed combustion system has been described and discussed. The results of the three versions of the optimization methods have been comparatively summarized in conclusions.
Ireneusz Pielecha; Wojciech Bueschke; Maciej Skowron; Łukasz Fiedkiewicz; Filip Szwajca; Wojciech Cieslik; Krzysztof Wislocki. Prechamber optimal selection for a two stage turbulent jet ignition type combustion system in CNG-fuelled engine. Aim Your Enthusiasm: Targeting Increased Middle Class Health Insurance Tax Credits 2019, 176, 16 -26.
AMA StyleIreneusz Pielecha, Wojciech Bueschke, Maciej Skowron, Łukasz Fiedkiewicz, Filip Szwajca, Wojciech Cieslik, Krzysztof Wislocki. Prechamber optimal selection for a two stage turbulent jet ignition type combustion system in CNG-fuelled engine. Aim Your Enthusiasm: Targeting Increased Middle Class Health Insurance Tax Credits. 2019; 176 (1):16-26.
Chicago/Turabian StyleIreneusz Pielecha; Wojciech Bueschke; Maciej Skowron; Łukasz Fiedkiewicz; Filip Szwajca; Wojciech Cieslik; Krzysztof Wislocki. 2019. "Prechamber optimal selection for a two stage turbulent jet ignition type combustion system in CNG-fuelled engine." Aim Your Enthusiasm: Targeting Increased Middle Class Health Insurance Tax Credits 176, no. 1: 16-26.
The increase in ignitability consist a main aim of implementation of the turbulent jet ignition (TJI) in relation to the combustion of diluted charges. Such an ignition system has been introduced to the lean-burn CNG engine in the scope of GasOn-Project (Gas Only Internal Combustion Engines). In this study the impact of TJI application on the main combustion indexes has been investigated using RCM and analyzed on the bases of the indicating and optical observations data. The images have been recorded using LaVision HSS5 camera and post-processed with Davis software. Second part of the study based on indicating measurements consist the analysis of combustion regarding the variation in the geometry of pre-chamber nozzles. It has been noted, that combustion with TJI indicates signi- ficantly bigger flame luminescence and simultaneously – faster flame front development, than the combustion initiated with conventional SI. The positive impact of nozzles angular position on engine operational data has been found in the static charge movement conditions, regarding the combustion stability.
Wojciech Bueschke; Maciej Skowron; Krzysztof Wislocki; Filip Szwajca. Comparative study on combustion characteristics of lean premixed CH4/air mixtures in RCM using spark ignition and turbulent jet ignition in terms of orifices angular position change. Aim Your Enthusiasm: Targeting Increased Middle Class Health Insurance Tax Credits 2019, 176, 36 -41.
AMA StyleWojciech Bueschke, Maciej Skowron, Krzysztof Wislocki, Filip Szwajca. Comparative study on combustion characteristics of lean premixed CH4/air mixtures in RCM using spark ignition and turbulent jet ignition in terms of orifices angular position change. Aim Your Enthusiasm: Targeting Increased Middle Class Health Insurance Tax Credits. 2019; 176 (1):36-41.
Chicago/Turabian StyleWojciech Bueschke; Maciej Skowron; Krzysztof Wislocki; Filip Szwajca. 2019. "Comparative study on combustion characteristics of lean premixed CH4/air mixtures in RCM using spark ignition and turbulent jet ignition in terms of orifices angular position change." Aim Your Enthusiasm: Targeting Increased Middle Class Health Insurance Tax Credits 176, no. 1: 36-41.
Ever stronger emission standards accepted for modern internal combustion engines force some new tendencies in the engine development trends. In recent studies it was confirmed, that the use of combustion of lean gas-air mixtures leads to reduction of CO2 and HC emissions while maintaining a possible acceptable value of thermal efficiency. Such combustion systems, already known since many years as e.q. Turbulent Ignition, Pulsed Jet Combustion, Sparking Jet Ignition and similar, can offer further potential in the improvement of combustion process control. The main purpose of this research was to detect and define any correlation between gas delivery parameters, ignition energy in the first stage of combustion and some system design parameters with the turbulent ignition possibilities of lean and very lean gas mixtures, with the flame propagation velocity in main chamber and with the intensity of heat release. Such correlation should deliver some answers for the combustion system optimization and better combustion process control. For the above mentioned purpose the test stand with the model of IC engine was adopted. It delivered the possibilities of the spark-plug ignition in the prechamber and of the dynamic observation of the ignition spray propagation in main chamber of the system. For this last task the Rapid Compression Machine has been applied equipped with the optical access into main chamber and with high-speed recording system for dynamic registration of spray formation as well as for flame propagation across the chamber. Simultaneously performed indication of both chambers (pre-chamber and main chamber) made it possible to correlate of indexes determined for flame propagation velocity, flame luminosity distribution in main chamber with thermodynamic indexes achieved form the analysis of the pressures, temperatures and mixture masses in both chambers. The results achieved within this research allow to identify many design parameters of the 2-stage combustion system and to recognize more important thermodynamic parameters of the system which seems to be essential for improving of the system potential according heat release, heat release rate and system thermal efficiency for the future development.
W Bueschke; M Skowron; Filip Szwajca; Krzysztof Wislocki. Flame propagation velocity in 2-stage gas combustion system applied in SI engine. IOP Conference Series: Materials Science and Engineering 2018, 421, 042009 .
AMA StyleW Bueschke, M Skowron, Filip Szwajca, Krzysztof Wislocki. Flame propagation velocity in 2-stage gas combustion system applied in SI engine. IOP Conference Series: Materials Science and Engineering. 2018; 421 (4):042009.
Chicago/Turabian StyleW Bueschke; M Skowron; Filip Szwajca; Krzysztof Wislocki. 2018. "Flame propagation velocity in 2-stage gas combustion system applied in SI engine." IOP Conference Series: Materials Science and Engineering 421, no. 4: 042009.