This study investigates combustion and emission characteristics of a contemporary single-cylinder compression ignition engine fuelled with diesel, fatty acid methyl esters (FAME) and hydrotreated vegetable oil (HVO). These two drop-in fuels have an increasing share in automotive supply chains, yet have substantially different physical and auto-ignition properties. HVO has a lower viscosity and higher cetane number, and FAME has contrary characteristics. These parameters heavily affect mixture formation and the following combustion process, causing that the engine pre-optimized to one fuel option can provide deteriorated performance and excess emissions if another sustainable option is applied. To investigate the scale of this problem, injection pressure sweeps were performed around the stock, low NOX and low PM engine calibration utilizing split fuel injection. The results showed that FAME and HVO prefer lower injection pressures than diesel fuel, with the benefits of simultaneous reduction of all emission indicators compared to DF. Additionally, reduction of injection pressure from 80 MPa to 60 MPa for biodiesels at low engine load resulted in improved brake thermal efficiency by 1 percentage point, due to reduced parasitic losses in the common rail system.
AATOLA, H., LARMI, M., SARJOVAARA, T. et al. Hy-drotreated Vegetable Oil (HVO) as a renewable diesel fuel: trade-off between NOx, particulate emission, and fuel con-sumption of a heavy duty engine. SAE International Journal of Engines. 2008, 1, 1251-1262.
BAE, C., KIM, J. Alternative fuels for internal combustion engines. Proceedings of the Combustion Institute. 2017, 36(3), 3389-3413.
BEZERGIANNI, S., DIMITRIADIS, A. Comparison between different types of renewable diesel. Renewable and Sustainable Energy Reviews. 2013, 21, 110-116.
DEMIRBAS, A. Progress and recent trends in biodiesel fuels. Energy Conversion and Management. 2009, 50, 14-34.
DIMITRIADIS, A., SELJAK, T., VIHAR, R. et al. Improving PM-NOx trade-off with paraffinic fuels: A study towards diesel engine optimization with HVO. Fuel 2020, 265, 116921.
Engine Technology International, March 2021, 60-61.
GARRAÍN, D., HERRERA, I., LAGO, C. et al. Renewable diesel fuel from processing of vegetable oil in hydrotreatment units: theoretical compliance with European Directive 2009/28/EC and ongoing projects in Spain. 2010, 4.
GOLIMOWSKI, W., BERGER, W.A., PASYNIUK, P. et al. Biofuel parameter dependence on waste fats’ fatty acids profile. Fuel. 2017, 197, 482-487.
GOLIMOWSKI, W., KRZACZEK, P., MARCINKOWSKI, D. et al. Impact of biogas and waste fats methyl esters on NO, NO2, CO, and PM emission by dual fuel diesel engine. Sustainability. 2019, 11(6), 1799.
GRACZ, W., CZECHLOWSKI, M., MARCINKOWSKI, D. et al. The impact of the temperature of rapeseed oil methyl esters on nitrogen oxides emissions. E3S Web of Conferences. 2020, 171, 01002.
GRZELAK, P., ŻÓŁTOWSKI, A. Environmental assessment of the exploitation of diesel engines powered by biofuels. Combustion Engines. 2020, 180(1), 31-35.
HUNICZ, J., MATIJOŠIUS, J., RIMKUS, A. et al. Efficient hydrotreated vegetable oil combustion under partially premixed conditions with heavy exhaust gas recirculation. Fuel. 2020, 268, 117350.
KASPRZYK, P., HUNICZ, J., RYBAK, A. et al. Excess air ratio management in a diesel engine with exhaust backpressure compensation. Sensors. 2020, 20(22), 6701.
KOSZAŁKA, G., HUNICZ, J., NIEWCZAS, A. A comparison of performance and emissions of an engine fuelled with diesel and biodiesel. SAE International Journal of Fuels and Lubricants 2010, 3, 77-84.
KRZACZEK, P., RYBAK, A., BOCHNIAK, A. The impact of selected biofuels on the performance parameters of the common rail power system in the utility engine. MATEC Web of Conferences. 2018, 234, 03004.
LIU, D., GHAFOURIAN, A., XU, H. Phenomenology of EGR in a light duty diesel engine fuelled with hydrogenated vegetable oil (HVO), used vegetable oil methyl ester (UVOME) and their blends. SAE Technical Paper 2013-01-1688. 2013.
MARCINKOWSKI, D., RUKOWICZ, B., GOLIMOWSKI, W. et al. Effect of selected depressants on cold filter plugging point for methyl esters obtained from transesterification of waste vegetable and animal fats. Przemysł Chemiczny. 2017, 96(9), 1927-1930.
MIKULSKI, M., AMBROSEWICZ-WALACIK, M., HUNICZ, J. et al. Combustion engine applications of waste tyre pyrolytic oil. Progress in Energy and Combustion Science. 2021, 85, 100915.
NEEFT, J.P.A., MAKKEE, M., MOULIJN, J.A. Diesel particulate emission control. Fuel Processing Technology. 1995, 47(1), 1-69.
OMARI, A., PISCHINGER, S., BHARDWAJ, O.P. et al. Improving engine efficiency and emission reduction potential of HVO by fuel-specific engine calibration in modern passenger car diesel applications. SAE International Journal of Fuels and Lubricants. 2017, 10(3), 756-767.
REITZ, R.D., OGAWA, H., PAYRI, R. et al. IJER editorial: The future of the internal combustion engine. International Journal of Engine Research. 2020, 21(1), 3-10.
SUGIYAMA, K., GOTO, I., KITANO, K. et al. Effects of hydrotreated vegetable oil (HVO) as renewable diesel fuel on combustion and exhaust emissions in diesel engine. SAE International Journal of Fuels and Lubricants. 2011, 5, 205-215.
23. On-line access: 02.2021.
24. On-line access: 02.2021.
http://www.ifpenergiesnouvelle.... On-line access: 02.2021.