2025

• Poster
  Pedersen, Krister Aaen; Bjørgen, Karl Oskar Pires; Løvås, Terese. (2025) Optical and numerical investigation of ammonia combustion and its intermediates. the 12th European Combustion Meeting (ECM) , Edinburgh 2025-04-07 - 2025-04-10

2024

• Poster
  Pedersen, Krister Aaen; Lewandowski, Michal Tadeusz; Bjørgen, Karl Oskar Pires; Løvås, Terese. (2024) Impact of Pilot Fuel Spray Orientation in a Dual-Fuel Ammonia-Diesel Engine. Thiesel 2024 , Valencia, Spain 2024-09-10 - 2024-10-13
• Poster
  Bjørgen, Karl Oskar Pires; Løvås, Terese. (2024) An Experimental Investigation of Ammonia-nHeptane Spray Interaction under High Temperature and Pressure Conditions: Impact of Ambient Air Temperature and Pilot Injection. CI’s 40th International Symposium 2024-07-21 - 2024-07-26
• Academic lecture
  Wang, Liang; Skreiberg, Øyvind; Bjørgen, Karl Oskar Pires; Sebestyén, Zoltán; Czégény, Zsuzsanna; Bakken, Jørn. (2024) Production and characterization of biocarbon under different conditions. Impacts of Fuel Quality 2024 , Garmisch-Partenkirchen, Germany 2024-09-02 - 2024-09-06
• Academic lecture
  Bjørgen, Karl Oskar Pires; Desclaux, Anthony; Mounaïm-Rousselle, Christine; Hespel, Camille. (2024) Experimental Characterization of Superheated Ammonia Spray from a Single-hole ECN Spray M Injector. ICE Forward Conference , San Antonio, Texas, USA 2024-10-20 - 2024-10-23

2023

• Poster
  Zhang, Jingyuan; Bjørgen, Karl Oskar Pires; Netzer, Corinna; Løvås, Terese. (2023) Machine learning-assisted predictions of soot distributions from luminosity images for renewable fuels. European Combustion Meeting , Rouen, Frankrike 2023-04-25 - 2023-04-28
• Poster
  Bjørgen, Karl Oskar Pires; Borsheim, Nina; Løvås, Terese. (2023) Momentum Flux Measurements of Liquid Injection of Ammonia using a GDI Injector. European Combustion Meeting , Rouen, France 2023-04-25 - 2023-04-28
• Lecture
  Bjørgen, Karl Oskar Pires. (2023) Dual fuel combustion of ammonia and diesel in a CI engine by direct injection. 2nd Symposium on Ammonia Energy , Orleans 2023-07-10 - 2023-07-13
• Academic lecture
  Bjørgen, Karl Oskar Pires; Emberson, David Robert; Løvås, Terese. (2023) The effect of ammonia and diesel spray orientation on combustion characteristics and emissions in a CI engine. Nordic Flame Days 2023 , Trondheim 2023-11-29 - 2023-11-30

2022

• Poster
  Bjørgen, Karl Oskar Pires; Emberson, David; Løvås, Terese. (2022) Combustion of Ammonia and Biodiesel in a Compression Ignition Engine by Direct Injection. 39th International Symposium on Combustion , Vancouver 2022-07-25 - 2022-07-29
• Academic lecture
  Wang, Liang; Bjørgen, Karl Oskar Pires; Olsen, Maria Nicte Polanco; Czégény, Zsuzsanna; Skreiberg, Øyvind; Grønli, Morten. (2022) A comparative study on the effect of slow pyrolysis temperature on softwood and hardwood pyrolysis products yields and biochar properties. 23rd International Conference on Analytical and Applied Pyrolysis (Pyro 2022) , Ghent, Belgium 2022-05-15 - 2022-05-20
• Academic lecture
  Bjørgen, Karl Oskar Pires. (2022) Direct injection of ammonia and biodiesel in a single cylinder compression ignition engine. CPOTE 2022 , Warszawa 2022-09-20 - 2022-09-23
• Poster
  Khare, Shivang; Bjørgen, Karl Oskar Pires; Emberson, David Robert; Løvås, Terese. (2022) Experimental Study of Hydrothermal Lique-Faction (HTL) Biofuel in CI Engine. Norren Summer School (Poster Presentation), Asker, Norway 2022-06-13 - 2022-06-16
• Poster
  Khare, Shivang; Bjørgen, Karl Oskar Pires; Kohansal, Komeil; Emberson, David Robert; Løvås, Terese; Pedersen, Thomas Helmer. (2022) Combustion and Emissions study of Hydrothermal Liquefaction (HTL) Biofuel in Optical Engine. Bio4Fuels Days (Poster Presentation), Bergen, Norway , Bergen 2022-11-15 - 2022-11-16

2021

• Poster
  Wang, Liang; Skreiberg, Øyvind; Czégény, Zsuzsanna; Tschentscher, Roman; Olsen, Maria Nicte Polanco; Bjørgen, Karl Oskar Pires. (2021) Characterization of liquid by-products from slow pyrolysis of woody biomass. 29th European Biomass Conference & Exhibition , online 2021-04-26 - 2021-04-29
• Lecture
  Bantle, Michael; Bjørgen, Karl Oskar Pires; Claussen, Ingrid Camilla. (2021) Climate Neutral Drying of Organic Products: CO2 heat pump drying. Smart and Sustainable Processing of Organic Fresh Products , Digital 2021-05-28 - 2021-05-28
• Academic lecture
  Wang, Liang; Skreiberg, Øyvind; Czégény, Zsuzsanna; Olsen, Maria Nicte Polanco; Bjørgen, Karl Oskar Pires. (2021) Production and characterization of biochar from woody biomass under different pyrolysis conditions. 16th Conference on Sustainable Development of Energy, Water and Environment Systems (SDEWES) , Dubrovnik, Croatia 2021-10-10 - 2021-10-15
• Poster
  Wang, Liang; Skreiberg, Øyvind; Czégény, Zsuzsanna; Olsen, Maria Nicte Polanco; Bjørgen, Karl Oskar Pires. (2021) Production and Characterization of Biocarbon from Woody Biomass under Different Pyrolysis Conditions. 29th European Biomass Conference & Exhibition , online 2021-04-26 - 2021-04-29
• Academic lecture
  Sevault, Alexis; Vullum-Bruer, Fride; Bjørgen, Karl Oskar Pires. (2021) Active PCM-based heat storage using biowax and a pillow-plate heat exchanger in a ZEB building. Enerstock 2021 - 15th International Conference on Energy Storage , Ljubljana, Slovenia 2021-06-09 - 2021-06-11

2019

• Academic lecture
  Lewandowski, Michal; Emberson, David; Netzer, Corinna; Ahmed, Ahfaz; Bjørgen, Karl Oskar Pires; Løvås, Terese. (2019) Numerical investigation of emissions from combustion of diesel fuels using Stochastic Reactor Model. XIII Modelling of Multiphase Flows in Thermo-Chemical Systems , Wiezyca 2019-06-13 - 2019-06-15
• Poster
  Emberson, David; Bjørgen, Karl Oskar Pires; Løvås, Terese. (2019) Detailed In-flame Soot Characteristics of Diesel, HVO and FAME using Extinction Imaging. Bio4Fuels Days , Gothenburg 2019-11-04 - 2019-11-06
• Academic lecture
  Bjørgen, Karl Oskar Pires. (2019) Diffuse Back-Illuminated Extinction Imaging of Soot: Effects of Beam Steering and Flame Luminosity. SAE International Powertrains, Fuels and Lubricants , San Antonio, Texas 2019-01-22 - 2019-01-24
• Poster
  Lewandowski, Michal; Emberson, David; Netzer, Corinna; Ahmed, Ahfaz; Bjørgen, Karl Oskar Pires; Løvås, Terese. (2019) Numerical investigation of emissions from combustion of diesel fuels with glycerol addition using Stochastic Reactor Model. Building a Sustainable European Biofuel Industry , Gothenburg 2019-11-04 - 2019-11-06

2018

• Poster
  Bjørgen, Karl Oskar Pires; Emberson, David. (2018) Soot characterization: Combined sampling and optical techniques. THIESEL 2018. Thermo-and Fluid Dynamics Processes in Direct Injection Engines , Valencia 2018-09-11 - 2018-09-14
• Poster
  Bjørgen, Karl Oskar Pires; Emberson, David; Løvås, Terese. (2018) Detailed in-flame soot characteristics of Diesel, HVO and FAME using extinction imaging. 37th International Symposium on Combustion , Dublin 2018-07-29 - 2018-08-03

2017

• Poster
  Bjørgen, Karl Oskar Pires; Emberson, David. (2017) Assessment of L.E.D diffused backilluminated soot extinction to use in reciprocating rapid compression machine. 8th European Combustion Meeting 2017 , Dubrovnik 2017-04-18 - 2017-04-21
• Academic lecture
  Emberson, David; Bjørgen, Karl Oskar Pires; Løvås, Terese. (2017) Arctic Biodiesel Performance and PM Number Emissions. COMODIA 2017 , Okayama 2017-07-25 - 2017-07-28
• Academic lecture
  Bjørgen, Karl Oskar Pires; Emberson, David; Løvås, Terese. (2017) Diffuse Back-illuminated Imaging of Soot in an Optical Reciprocating Rapid Compression Machine. Nordic Flame Days , Stockholm 2017-10-10 - 2017-11-11

2016

• Poster
  Bjørgen, Karl Oskar Pires; Emberson, David. (2016) A Novel Optical Experimental Suite for CI Combustion Characterization. THIESEL 2016. Thermo and Fluid Dynamic Processes in Direct Injection Engines , Valencia 2016-09-13 - 2016-09-16
• Poster
  Bjørgen, Karl Oskar Pires; Emberson, David; Løvås, Terese. (2016) Combustion Characterization of Second-generation Biofuels for Arctic Conditions in Compression-ignition Engines. 36th International Symposium on Combustion , Seoul 2016-07-31 - 2016-08-05