Publications
2013Johansson, Monica; Yang, Junfeng; Ochoterena, Raúl; Gjirja, Savo; Denbratt, Ingemar: NOx and soot emissions trends for RME, SME and PME fuels using engine and spray experiments in combination with simulations. Fuel, 106 pp. 293-302.
2012Dahl, Daniel; Denbratt, Ingemar: Valve Profile Adaptation, Stratification, Boosting and 2-Stroke Strategies for Raising Loads of Gasoline HCCI Engines. SAE Int. J. Engines, 5 (3) pp. 13.
2011Andersson, Mats; Wärnberg, Jonas; Hemdal, Stina; Dahlander, Petter; Denbratt, Ingemar: Evaporation of Gasoline-Like and Ethanol-Based Fuels in Hollow-Cone Sprays Investigated by Planar Laser-Induced Fluorescence and Mie Scattering . SAE Technical Paper , pp. 2011-01-1889.
Dahl, Daniel; Denbratt, Ingemar: HCCI/SCCI load limits and stoichiometric operation in a multicylinder naturally aspirated spark ignition engine operated on gasoline and E85 . INTERNATIONAL JOURNAL OF ENGINE RESEARCH , 12 (1) pp. 58-68.
Dahl, Daniel; Andersson, Mats; Denbratt, Ingemar: The Origin of Pressure Waves in High Load HCCI Combustion: A High-Speed Video Analysis. Combustion Science and Technology, 183 (11) pp. 1266-1281.
Hemdal, Stina; Andersson, Mats; Dahlander, Petter; Ochoterena, Raúl; Denbratt, Ingemar: In-cylinder soot imaging and emissions of stratified combustion in a spark-ignited spray-guided direct-injection gasoline engine. International Journal of Engine Research, 12 (6) pp. 549-563.
Huang, Chen; Lipatnikov, Andrei; Golovitchev, Valeri; Hemdal, Stina; Wärnberg, Jonas; Andersson, Mats; Dahlander, Petter; Denbratt, Ingemar: Gasoline Direct Injection - Simulations and Experiments. ILASS2011. The 24th European Conference on Liquid Atomization and Spray Systems, Estoril, Portugal, September, 5-7, 2011, pp. 4 pagews.
2010Lif, Anna; Ochoterena, Raúl; Nydén, Magnus; Andersson, Sven; Denbratt, Ingemar: Optical studies of spray development and combustion of water-in-diesel emulsion and microemulsion fuels. Fuel, 89 (1) pp. 122-132.
2009Cui, Xiaoqi; Helmantel, Arjan; Golovitchev, Valeri; Denbratt, Ingemar: Combustion and Emissions in a Light-Duty Diesel Engine using Diesel-Water Emulsions and Diesel-Ethanol Blends. SAE Paper 2009-01-2695, pp. 1-16.
Dahl, Daniel; Berntsson, Andreas; Denbratt, Ingemar; Koopmans, Lucien: Reducing Pressure Fluctuations at High Loads by Means of Charge Stratification in HCCI Combustion with Negative Valve Overlap. SAE,
Ehleskog, Malin; Gjirja, Savo; Denbratt, Ingemar: Effects of High Injection Pressure, EGR and Charge Air Pressure on Combustion and Emissions in an HD Single Cylinder Diesel Engine. SAE Int. J. Engines, 2(2) pp. 341-354.
Hemdal, Stina; Wärnberg, Jonas; Dahlander, Petter; Denbratt, Ingemar: Stratified Cold Start Sprays of Gasoline-Ethanol Blends. SAE SP 2241 SI Combustion and Direct Injection SI Engine TEchnology 2009, pp. 397-410. ISBN/ISSN: 978-0-7680-2137-0
Johansson, Monica; Gjirja, Savo; Ehleskog, Malin; Denbratt, Ingemar: Effects of Varying Engine Settings on Combustion Parameters, Emissions, Soot and Temperature Distributions in Low Temperature Combustion of Fischer-Tropsch and Swedish Diesel Fuels. SAE 2990 Powertrains, Fuels and Lubricants Meeting , (SAE no 2009-01-2787)
Salsing, Henrik; Ochoterena, Raúl; Denbratt, Ingemar: Performance of a Heavy Duty DME Engine - the Influence of Nozzle Parameters on Combustion and Spray Development. SAE 2009 World Congress, April 20-23, 2009, Cobo Center, Detroit, Michigan USA,
Wärnberg, Jonas; Hemdal, Stina; Andersson, Mats; Dahlander, Petter; Denbratt, Ingemar: Ignitability of hollow cone gasoline/gasoline-ethanol sprays. 18. Aachener Kolloquium, Fahrzeug- und Motorentechnik, 1 pp. 413-450.
2008Berntsson, Andreas; Andersson, Mats; Dahl, Daniel; Denbratt, Ingemar: A LIF-study of OH in the Negative Valve Overlap of a Spark-assisted HCCI Combustion Engine. SAE,
Dahl, Daniel; Denbratt, Ingemar; Koopmans, Lucien: An Evaluation of Different Combustion Strategies for SI Engines in a Multi-Mode Combustion Engine. SAE International,
Dahlander, Petter; Gutkowski, Artur; Denbratt, Ingemar: Visualization of fuel sprays for stratified cold starts in Gasoline Direct Injection engines. 22:nd European Conference on Liquid Atomization and Spray Systems, 8-10 September, 2008, Como Lake, Italy (ILASS 2008),
Ochoterena, Raúl; Larsson, Monica; Andersson, Sven; Denbratt, Ingemar: Optical studies of spray development and combustion characterization of oxygenated and Fischer-Tropsch fuels. SAE World Congress, (SAE-2008-01-1393)
Salsing, Henrik; Denbratt, Ingemar: Performance of a Heavy Duty DME Engine – the Influence of Methanol and Water in the Fuel. 2008 World Congress, Detroit, Michigan April 14-17, 2008,
2007Alriksson, Malin; Gjirja, Savo; Denbratt, Ingemar: The Effect of Charge Air and Fuel Injection Parameters on Combustion with High Levels of EGR in a HDDI Single Cylinder Diesel Engine. SAE World Congress, Detroit, SAE paper 2007-01-0914,
Berntsson, Andreas; Denbratt, Ingemar: HCCI Combustion Using Charge Stratification for Combustion. SAE, (2007-01-0210)
Berntsson, Andreas; Andersson, Mats; Dahl, Daniel; Denbratt, Ingemar: LIF imaging of OH during the Negative Valve Overlap of a HCCI Combustion Engine. The Spark Ignition Engine of the Future Conference, Strasbourg - INSA 28/11 - 29/11 2007 , (Code: R-2007-01-22) pp. (9).
Berntsson, Andreas; Denbratt, Ingemar: Optical study of HCCI Combustion using NVO and an SI Stratified Charge. SAE,
Larsson, Monica; Denbratt, Ingemar: An Experimental Investigation of Fischer-Tropsch Fuels in a Light-Duty Diesel Engine. SAE Fuel and Emission Conference 2007, Cape Town, 23-25 January 2007,
Larsson, Monica; Denbratt, Ingemar: Combustion of Fischer-Tropsch, RME and Conventional Fuels in a Heavy-Duty Diesel Engine . SAE Powertrain & Fluid Systems Conference & Exhibition, pp. 12.
Lif, Anna; Skoglundh, Magnus; Denbratt, Ingemar; Gjirja, Savo: Reduction of soot emissions when combusting water-in-diesel emulsion and microemulsion fuel in a direct injection diesel engine. Society of Automotive Engineers World Congress, Detroit, MI, USA, April 16-19, 2007,
Lif, Anna; Skoglundh, Magnus; Gjirja, Savo; Denbratt, Ingemar: Reduction of soot emissions when combusting water-in-diesel emulsion and microemulsion fuel in a direct injection diesel engine. SAE Technical Paper, (2007-01-1076)
Salsing, Henrik; Denbratt, Ingemar: Performance of a Heavy Duty DME Diesel Engine – an Experimental Study. SAE 2007 Commercial Vehicle Engineering Congress and Exhibition, Chicago October 2007,
Skogsberg, Mikael; Dahlander, Petter; Denbratt, Ingemar: An experimental study of mixture preparation and combustion in an optical engine using a piezo-actuated injector. Direkteinspritzung im Ottomotor IV, pp. 143-159. ISBN/ISSN: 978-3-8169-2716-7
Skogsberg, Mikael; Dahlander, Petter; Denbratt, Ingemar: Spray shape and atimization quality of an outward-opening piezo gasoline DI injector. SAE, (2007-01-1409)
2006Alriksson, Malin; Denbratt, Ingemar: Low Temperature Combustion in a Heavy Duty Diesel Engine Using High Levels of EGR. SAE world congress, Detroit, April 2006,
Berntsson, Andreas; Denbratt, Ingemar: HCCI Combustion Using a Spark Ignited Stratified Charge. Society of Automotive Engineers of Japan, annual congress,
Dahlander, Petter; Lindgren, Ronny; Denbratt, Ingemar: HIGH-SPEED PHOTOGRAPHY AND PHASE DOPPLER ANEMOMETRY MEASUREMENTS OF FLASH-BOILING MULTI-HOLE INJECTOR SPRAYS FOR SPRAY-GUIDED GASOLINE DIRECT INJECTION. 10th International Conference on Liquid Atomization and Spray Systems, ICLASS 2006, August 27-Sept 1, 2006,
Ehleskog, Rickard; Golovitchev, Valeri; Denbratt, Ingemar; Andersson, Sven; Rinaldini, Carlo: Experimental and Numerical Investigation of Split Injections at Low Load in an HDDI Diesel Engine Equipped with a Piezo Injector, SAE 2006-01-3433. SAE Journal of Engines,
Fredriksson, Jakob; Bergman, Miriam; Golovitchev, Valeri; Denbratt, Ingemar: Modeling the Effect of Injection Schedule Change on Free Piston Engine Operation. SAE International,
Fredriksson, Jakob; Denbratt, Ingemar; Golovitchev, Valeri: Numerical Investigation of a Loop-Scavenged Two-Stroke Free Piston Engine. JSAE Annual Spring Congress, (JSAE 20065455)
Helmantel, Arjan; Denbratt, Ingemar: HCCI Operation of a Passenger Car DI Diesel Engine with an Adjustable Valve Train. Presented at SAE 2006 World Congress, Detroit, MI, USA, April 2006,
Larsson, Monica; Denbratt, Ingemar: Comparison of Conventional Diesel and Fischer-Tropsch Diesel Fuels for HCCI Combustion. JSAE Annual Spring Congresse 2006,
Salsing, Henrik; Rinaldini, Carlo; Golovitchev, Valeri; Denbratt, Ingemar: Performance and Emissions of a DME Diesel Engine - a Simulation Study. JSAE Annual Congress May 25, 2006,
2005Alriksson, Malin; Rente, Tanja; Denbratt, Ingemar: Low Soot, Low NOx in a Heavy Duty Diesel Engine Using High Levels of EGR. SAE fuels and lubricants, San Antonio, 2005,
Berntsson, Andreas; Denbratt, Ingemar: Spark Assisted HCCI Combustion Using a Stratified Hydrogen Charge. SAE Naples Section,
Bladh, H.; Brackmann, C.; Dahlander, Petter; Denbratt, Ingemar; Bengtsson, P. E.: Flame propagation visualization in a spark-ignition engine using laser-induced fluorescence of cool-flame species. Measurement Science and Technology, 16 (5) pp. 1083-1091.
Dahlander, Petter; Denbratt, Ingemar: Experimental investigation of fuel pressure influence on droplet size and velocity for a gasoline multi-hole direct injection injector spray under vaporizing conditions in a constant pressure chamber. ILASS Americas, 18th Annual Conference on Liquid Atomization and Spray Systems, Irvine, CA, May 2005,
Dahlander, Petter; Denbratt, Ingemar: Experimental investigation of the influence of fuel pressure on the fuel distribution and liquid penetration of a high-pressure gasoline multi-hole direct injection injector spray. 20th ILASS Europe Annual Meeting of the Institute of Liquid Atomization and Spray System, 5th - 7th September 2005, Orleans, France,
Helmantel, Arjan; Denbratt, Ingemar: Exploration of the Load Range of HCCI Operation of a DI Diesel Engine. Presented at: Engine Combustion Processes – Current Problems and Modern Techniques (VII. Congress), published in Berichte zur Energie- und Verfahrenstechnik”, Schriftenreihe Heft 5.1, Leipertz, A. (editor)., 5 (1) pp. 568. ISBN/ISSN: 3-931901-36-X
Helmantel, Arjan; Gustavsson, Jonas; Denbratt, Ingemar: Operation of a DI Diesel Engine with Variable Effective Compression Ratio in HCCI and Conventional Diesel Mode. Presented at the 2005 SAE World Congress, April 11-14, Detroit, MI, USA, included in SAE 2005 Transactions Journal of Engines,
Husberg, Tobias; Gjirja, Savo; Denbratt, Ingemar: Combustion Phasing and Emission Control by Using Multiple Injections on Heavy-Duty Diesel Engine.. Fifth Symposium Towards Clean Diesel Engines, Lund Institute of Technology, Lund, Sweden,
Husberg, Tobias; Denbratt, Ingemar; Gjirja, Savo; Engström, Johan: Combustion phasing and emission control by using multiple injections on a Heavy-Duty Diesel engine.. Fifth Symposium Towards Clean Diesel Engines, Lund Institute of Technology, Lund, Sweden,
Husberg, Tobias; Denbratt, Ingemar; Gjirja, Savo: Fuel Equivalence Ratio and EGR Impact on Premixed Combustion Rate and Emission Output on a Heavy-Duty Diesel Engine.. 7th International Conference on Engines for Automobile, SAE Naples Section, Capry (Naples)- Italy.( SAE paper 2005-24-046),
Husberg, Tobias; Denbratt, Ingemar; Gjirja, Savo; Engström, Johan: Fuel Equivalence Ratio and EGR Impact on Premixed Combustion Rate and Emission Output, on a Heavy-Duty Diesel Engine.. 7th International Conference on Engines for Automobile, SAE Naples section, Capri (Naples) - Italy, (SAE paper 2005-24-046)
Husberg, Tobias; Denbratt, Ingemar; Engström, Johan; Ringvik, Monica: Heavy-Duty Diesel Combustion With Ultra-Low NOx and SOOT Emissions~A Comparison Between Experimental Data and CFD Simulations. SAE World Congress, (SAE Paper 2005-01-0380)
Husberg, Tobias; Gjirja, Savo; Denbratt, Ingemar: Piston Temperature Measurement by Use of Thermographic Phosphors and Thermocouåles in a Heavy-Duty Diesel Engine Run Under Partly Premixed Conditions. SAE, Technical Paper Series, 2005, (2005-01-1646) pp. 11.
Skogsberg, Mikael; Dahlander, Petter; Lindgren, Ronny; Denbratt, Ingemar: Studies of the effect of injector parameters on mixture formation for multi-hole nozzles in a spray-guided . SAE World Congress 2005,
2004Fredriksson, Jakob; Denbratt, Ingemar: Simulation of a Two-Stroke Free Piston Engine. SAE 2004 Spring Fuels & Lubricants Conference in Toulouse,
Helmantel, Arjan; Denbratt, Ingemar: HCCI operation of a passenger car common rail DI Diesel engine with early injection of conventional Diesel fuel. SAE WORLD CONGRESS 2004, SAE Paper 2004-01-0935 ,
Husberg, Tobias; Gjirja, Savo; Denbratt, Ingemar; Engström, Johan: Visualization of Egr Influence on Diesel Combustion With Long Ignition Delay in a Heavy-Duty Engine. SAE Technical Paper Series, SP-1896, 2004, (2004-01-2947) pp. 10.
Koopmans, Lucien; Wallesten, Johan; Ogink, Roy; Denbratt, Ingemar: Location of the First Auto-Ignition Sites for Two HCCI Systems in a Direct Injection Engine. SAE Technical Paper Series, SAE paper 2004-01-0564,
Koopmans, Lucien; Strömberg, Elna; Denbratt, Ingemar: The Influence of PRF and Commercial Fuels with High Octane Number on the Auto-ignition Timing of an Engine Operated in HCCI Combustion Mode with Negative Valve Overlap. SAE Technical Paper Series, SAE paper 2004-01-1967,
Lindgren, Ronny; Denbratt, Ingemar: Influence of Wall Properties on the Characteristics of a Gasoline Spray after Wall Impingement . SAE, Toulouse 8-10 june,
Lindgren, Ronny; Denbratt, Ingemar: Modeling Gasoline Spray-Wall Interactions and Comparison to Experimental Data. SAE Oct. 25-28,
Rente, Tanja; Gjirja, Savo; Denbratt, Ingemar: Experimental Investigation of Multiple Injection Effects on Combustion of a Diesel Engine with a Unit Injector,. International Journal of Engine Research, pp. 29.
Rente, Tanja; Gjirja, Savo; Denbratt, Ingemar: Experimental Investigation of the Effect of Needle Opening Pressure (Nop) on Combustion and Emissions Formation in a Heavy-Duty Di Diesel Engine. SAE Technical Paper Series, Society of Automotive Engineers., (2004-01-2921) pp. 20.
Rente, Tanja; Gjirja, Savo; Denbratt, Ingemar: Influence of Injection Parameters on the Local Crank Angle Resolved Heat Flux on the Piston Wall. International Journal "Combustion Science and Technology", pp. 29.
Skogsberg, Mikael; Dahlander, Petter; Persson, Fredrik; Hemdal, Stina; Denbratt, Ingemar: Fuel distribution visualization from an air-assisted injector in a spray chamber . Comodia 2004, Yokohama, 2-5 aug 2004,
2003Fredriksson, Jakob; Denbratt, Ingemar: Simulation of a Two-Stroke Free Piston Energy Converter. Joint Meeting of the Scandinavian-Nordic and Italian Section of the Combustion Institute,
Helmantel, Arjan; Denbratt, Ingemar; Somhorst, Joop: Visualization of the Effects of Post Injection and Swirl on the Combustion Process of a Passenger Car DI Diesel Engine. International Combustion Engine Division (ICES03) 2003 Technical Conference of the ASME, May 11-14, 2003, Salzburg, Austria,
Lindgren, Ronny; Skogsberg, Mikael; Sandquist, Håkan; Denbratt, Ingemar: The Influence of Injector Deposits on Mixture Formation in a DISC SI Engine. SAE, (2003-01-1771)
Rente, Tanja; Gjirja, Savo; Denbratt, Ingemar: Experimental Study on the Influence of Nozzle Orifice Number on Comustion and Emissions Formation of a Heavy Duty DI Diesel Engine. SAE, 6th International Conference on Engines for Automobile SAE_NA 2003-01-67, Capri, Italy, pp. 9.