LEC GmbH (98780)

Research output

Research output per year 2014 2017 2018 2019 2022 2023 2024

• 101 Conference paper
• 68 Article
• 32 Paper
• 23 Conference article
• 56 More
  • 13 Patent
  • 10 Abstract
  • 9 Chapter
  • 8 Poster
  • 7 (Old data) Lecture or Presentation
  • 3 Doctoral Thesis
  • 2 Anthology
  • 1 Editorial
  • 1 Software
  • 1 Brochure
  • 1 Master's Thesis

Research output per year

Research output per year

Search results

• 2024

  Alternative spark plug electrode materials for economical, reliable engine operation

  Tilz, A., Gruber, M., Harrer, W., Engelmayer, M., Fimml, W. & Wimmer, A., Jan 2024, (E-pub ahead of print) Proceedings of the ASME 2023 ICE Forward Conference, ICEF 2023. American Society of Mechanical Engineers (ASME), v001t01a005

  Research output: Chapter in Book/Report/Conference proceeding › Conference paper › peer-review

  • Iridium 100%
  • Platinum 100%
  • Brittleness 100%
  • Fuel Consumption 100%
  • Conductive Material 100%

• Ammonia as a fuel: Optical investigation of turbulent flame propagation of NH3/Air and NH3/H2/N2/Air flames at engine conditions

  Klawitter, M., Wüthrich, S., Cartier, P., Albrecht, P., Herrmann, K., Gößnitzer, C., Pirker, G. & Wimmer, A., 1 Nov 2024, In: Fuel. 375, 9 p., 132616.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  • Methane 100%
  • Flame Propagation 100%
  • Lewis Number 100%
  • Test Rig 50%
  • Flow Condition 50%

• Ammonia - the Key to Sustainable Energy and Transportation Systems?

  Wimmer, A., Wermuth, N. & Malin, M., 24 Apr 2024, Proceedings of the 45th International Vienna Motor Symposium 2024. Geringer, B. (ed.). Wien: Österreichischer Verein für Kraftfahrzeugtechnik, Vol. 1. p. 303-324 19 p. 2024-21

  Research output: Chapter in Book/Report/Conference proceeding › Conference paper › peer-review

• Application of Data-driven Approaches to Efficient Knock Prediction in Engine Development

  Laubichler, C., Posch, S., Gößnitzer, C., Oppl, T., Pirker, G. & Wimmer, A., 2 Sept 2024, THIESEL 2024. Conference on Thermo- and Fluid Dynamics of Clean Propulsion Powerplants. Editorial Universitat Politècnica de Valencia, p. 441 - 449 9 p.

  Research output: Chapter in Book/Report/Conference proceeding › Conference paper › peer-review

  Open Access

  • Single Cylinder 100%
  • Engine Development 100%
  • Engine Cylinders 100%
  • Design Process 66%
  • Operating Point 66%

• A universal, fast and precise device for Measuring the Oil Consumption of Internal Combustion Engines

  Rossegger, B., Vareka, M., Engelmayer, M. & Rossegger, W., 25 Jan 2024, Technical Reference Bulletin: Transformation towards progressive Mobility - Symposium on International Automotive Technology, 2024. ARAI, p. 185-190 6 p.

  Research output: Chapter in Book/Report/Conference proceeding › Conference paper

• Ceramic materials as an alternative for conventional spark plug electrodes

  Harrer, W., Gruber, M., Melcher, V., Tilz, A., Engelmayer, M., Wimmer, A. & Bermejo, R., 19 Jul 2024, (E-pub ahead of print) In: International Journal of Applied Ceramic Technology .

  Research output: Contribution to journal › Article › peer-review

  Open Access

  • Ceramic Material 100%
  • Spark Plug 100%
  • Harsh Condition 40%
  • Service Time 40%
  • Density 33%

• Combustion Behavior of Carbon-free Fuels for Large Engines

  Klawitter, M., Gößnitzer, C., Pirker, G., Wimmer, A., Wüthrich, S. & Herrmann, K., 20 Mar 2024, EPHyC 2024 Book of Abstracts. Nabizada et al., A. (ed.). Ghent, Belgium: Eigenverlag EPHyC, p. 98-103 6 p.

  Research output: Chapter in Book/Report/Conference proceeding › Conference paper › peer-review

  File

• Erneuerbarer Wasserstoff übers Stromnetz: Simulation zukünftiger Nachhaltigkeitskriterien in Europa

  Thaler, B., Wohlthan, M. & Pirker, G., 14 Feb 2024, (Accepted/In press). 13 p.

  Research output: Contribution to conference › Paper

  Open Access

  File

• Experimental evaluation of the significance of scheduled turbocharger reconditioning on marine diesel engine efficiency and exhaust gas emissions

  Nyongesa, A. J., Park, M. H., Lee, C. M., Choi, J. H., Pham, V. C., Hur, J. J. & Lee, W. J., Aug 2024, In: Ain Shams Engineering Journal. 15, 8, 102845.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  • Auxiliary Diesel Engine 100%

• High Speed Particle Image Velocimetry in a Large Engine Prechamber

  Ramachandran, A., Soni, R., Roßmann, M., Klawitter, M., Gößnitzer, C., Woisetschläger, J., Tilz, A., Pirker, G. & Wimmer, A., 12 Sept 2024, (E-pub ahead of print) In: Flow, Turbulence and Combustion. 2024, 21 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

• Impact of Injection Valve Condition on Data-driven Prediction of Key Combustion Parameters Based on an Intelligent Diesel Fuel Injector for Large Engine Applications

  Laubichler, C., Kiesling, C., Warter, S., Kober, M., Wimmer, A., Coppo, M., Negri, C., Koegeler, H-M. & Kammerdiener, T., 9 Apr 2024, In: SAE Technical Papers. 15 p., 2024-01-2836.

  Research output: Contribution to journal › Conference article › peer-review

  • Orifice Plate 100%

• Influence of initial electric arc root position on electric arc behavior with spark plugs in large lean burn spark ignited gas engines

  Tilz, A., Kiesling, C., Pirker, G. & Wimmer, A., Aug 2024, In: International Journal of Engine Research. 25, 8, p. 1491-1499 9 p.

  Research output: Contribution to journal › Article › peer-review

  • Gas Engines 100%
  • Spark Plug 100%
  • Electric Arc 100%
  • Combustion 27%
  • Ignition 18%

• Investigation of Hydrogen Combustion Concepts for Large Bore Engines Used in a Marine Application

  Lackner, M., 25 Jan 2024. 1 p.

  Research output: Contribution to conference › Poster

• Investigation on the combustion of ammonia using direct high/medium-pressure-Otto injection approach in a diesel two-stroke marine slow speed engine

  Nyongesa, A. J., Kim, J. K. & Lee, W. J., Jun 2024, In: Journal of the Energy Institute. 114, 101641.

  Research output: Contribution to journal › Article › peer-review

  • Stroke Engine 100%
  • Engine Speed 100%
  • Injection Pressure 66%
  • Exhaust Gas Emission 66%
  • Direct-Injection 66%

• Laser-Structured Thin Film Sensor Technology for Sliding Bearings in Internal Combustion Engines

  Kiesling, C., Marques da Silva, M., Kober, M., Wimmer, A., Düsing, J. F. & Hager, G., 1 Aug 2024, In: Journal of Engineering for Gas Turbines and Power. 146, 8, 081008.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  • Thin Films 100%
  • Lubrication 50%
  • Electrical Resistance 50%
  • Strain Measurement 50%
  • Greenhouse Gas 50%

• Oxyfuel combustion based carbon capture onboard ships

  Wohlthan, M., Thaler, B., Helf, A., Keller, F., Kaub, V., Span, R., Gräbner, M. & Pirker, G., Sept 2024, In: International Journal of Greenhouse Gas Control . 137, 137, 14 p., 104234.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  • Liquid Oxygen 100%

• Potential and limitations of different hydrogen combustion concepts for power generation applications

  Wermuth, N., Lackner, M., Kammel, G., Malin, M., Wimmer, A., Url, M. & Spyra, N., 1 May 2024, Tagungsband 13. Dessauer Gasmotoren-Konferenz. WTZ Roßlau GmbH (ed.). Dessau-Roßlau: FVTR Forschungszentrum für Verbrennungsmotoren und Thermodynamik Rostock GmbH, p. 164 - 175 11 p.

  Research output: Chapter in Book/Report/Conference proceeding › Conference paper

• Simulation-based Investigations of Different Combustion Concepts for Hydrogen-fuelled Large Gas Engines

  Dimitrov, D., Kammel, G., Egert, E., Lackner, M., Wermuth, N. & Wimmer, A., 24 Jun 2024, trans & MOTAUTO 2024: Proceedings. Sofia: Scientific-Technical Union of Mechanical Engineering „Industry-4.0", p. 37 - 40 4 p.

  Research output: Chapter in Book/Report/Conference proceeding › Conference paper

  • Direct Injection Engine 100%

• The contribution of ceramography to the development of ceramic spark plug electrode materials for large gas engines

  Gruber, M., Melcher, V., Harrer, W., Tilz, A., Engelmayer, M., Fimml, W., Wimmer, A. & Bermejo, R., Jan 2024, In: Practical Metallography. 61, 1, p. 4-15 12 p.

  Research output: Contribution to journal › Article › peer-review

  • Precious Metal Alloys 100%
  • Conventional Electrode 100%

• Utilizing neural networks to supplant chemical kinetics tabulation through mass conservation and weighting of species depletion

  Rohrhofer, F. M., Posch, S., Gößnitzer, C., García-Oliver, J. M. & Geiger, B., May 2024, In: Energy and AI. 16, 10 p., 100341.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  • Artificial Neural Network 100%
  • Mass Conservation 100%
  • Chemical Kinetics Characteristics 100%
  • Complex Reaction Mechanisms 100%
  • Chemical Reaction Kinetics 100%

• Vorrichtung zum Reinigen von Abgasen mit einem selektiven katalytischen Reduktionskatalysator

  Rossegger, B., Vareka, M., Schneßl, E. & Engelmayer, M., 15 Mar 2024, IPC No. F01N 003/20, Österreichisches Patentamt, Patent No. 526414, 12 Sept 2022

  Research output: Patent
• 2023

  0D modeling of ignition and combustion processes for H2/CH4 blends in open chamber gas engines

  Oppl, T., Wohlthan, M., Pirker, G., Wimmer, A. & Spyra, N., 12 Jun 2023. 13 p.

  Research output: Contribution to conference › Paper › peer-review

  Open Access

  File

• A Comparison of Virtual Sensors for Combustion Parameter Prediction of Gas Engines Based on Knock Sensor Signals

  Kefalas, A., Ofner, A., Posch, S., Pirker, G., Gößnitzer, C., Geiger, B. & Wimmer, A., 11 Apr 2023, In: SAE Technical Papers. 12 p., 2023-01-0434.

  Research output: Contribution to journal › Conference article › peer-review

  • Nonlinear Feature 100%

• Ammonia as Carbon-Free Fuel

  Url, M., Konstantinoff, L., Sepulveda-Lopez, D., Veltman, M., Wermuth, N. & Gumhold, C., Nov 2023, 19. Tagung Nachhaltigkeit in Mobilität, Transport und Energieerzeugung: (vormals “Der Arbeitsprozess des Verbrennungsmotors”). Eichlseder, H. & Wimmer, A. (eds.). Graz: Verlag der Technischen Universität Graz, p. 269 - 280 12 p. (ITna-Reports ; vol. 106).

  Research output: Chapter in Book/Report/Conference proceeding › Conference paper

• Assessment of combustion concepts and operational limits of net-zero carbon fuels

  Schlick, H., Kammerdiener, T., Murakami, S., Segura Carrasco, M. I., Figer, G., Malin, M. & Wermuth, N., 12 Jun 2023. 15 p.

  Research output: Contribution to conference › Paper › peer-review

  Open Access

  File

• Berkeley Advanced Reconstruction Toolbox 0.9.00

  Blumenthal, M., Heide, M., Juschitz, M., Holme, H. C. M., Rapp, B., Schaten, P., Scholand, N., Tamir, J., Tönnes, C. & Uecker, M., 6 Dec 2023

  Research output: Non-print form › Software

  Open Access

• Bringing Chemistry to Scale: Loss Weight Adjustment for Multivariate Regression in Deep Learning of Thermochemical Processes

  Rohrhofer, F. M., Posch, S., Gößnitzer, C., García-Oliver, J. M. & Geiger, B., 12 May 2023, Scientific Computing 2023: Conference Proceedings. Granigg, W. (ed.). Graz: Verlag der FH JOANNEUM Gesellschaft mbH, p. 4 - 11 8 p.

  Research output: Chapter in Book/Report/Conference proceeding › Conference paper › peer-review

• Carbon capture on ships - an energy flow based analysis using system simulation

  Wohlthan, M., Thaler, B., Wimmer, A. & Pirker, G., 24 Sept 2023. 1 p.

  Research output: Contribution to conference › Abstract

• Carbon Capture Solutions for Ferries

  Meyer, K., Wohlthan, M., Pirker, G., Dahms, F. & Müller, K., Nov 2023, 19. Tagung Nachhaltigkeit in Mobilität, Transport und Energieerzeugung: (vormals “Der Arbeitsprozess des Verbrennungsmotors”). Eichlseder, H. & Wimmer, A. (eds.). Graz: Verlag der Technischen Universität Graz, p. 351 - 362 12 p. (ITnA-Reports; vol. 106).

  Research output: Chapter in Book/Report/Conference proceeding › Conference paper

• Characterization of future fuels using an optically accessible rapid compression machine

  Pirker, G., Klawitter, M., Ramachandran, A., Gößnitzer, C., Tilz, A. & Wimmer, A., 12 Jun 2023, CIMAC Congress 2023, Busan. 17 p. 362

  Research output: Chapter in Book/Report/Conference proceeding › Conference paper › peer-review

  Open Access

  File

  • Presenting Result 100%

• Comparison and Validation of Tribological Simulation Model for Piston Ring Pack with real Measurements of a Single Cylinder Engine

  Marzemin, F., Weiß, D., Posch, S. & Engelmayer, M., 28 Mar 2023. 1 p.

  Research output: Contribution to conference › Abstract

• Data-Driven Prediction of Key Combustion Parameters Based on an Intelligent Diesel Fuel Injector for Large Engine Applications

  Warter, S., Laubichler, C., Kiesling, C., Kober, M., Wimmer, A., Coppo, M., Laurenzano, D. & Negri, C., 11 Apr 2023, In: SAE Technical Papers. 13 p., 2023-01-0291.

  Research output: Contribution to journal › Conference article › peer-review

  • Condition Monitoring 100%
  • Diesel Fuel 100%
  • Fuel Injection 75%
  • Cylinder Pressure 50%
  • Internal Combustion Engine 25%

• Data vs. Physics: The Apparent Pareto Front of Physics-Informed Neural Networks

  Rohrhofer, F. M., Posch, S., Gößnitzer, C. & Geiger, B. C., 7 Aug 2023, In: IEEE Access. 11, p. 86252-86261 10 p., 10210413.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  • Neural Network 100%
  • Physics 100%
  • Timescale 100%
  • Inverse Problem 100%
  • Operators (Mathematics) 33%

• Decarbonization of high-power systems: ammonia-hydrogen and ammonia-diesel combustion in HS engines

  Wermuth, N., Malin, M., Schubert-Zallinger, C., Engelmayer, M., Wimmer, A., Schlick, H. & Kammerdiener, T., 12 Jun 2023. 15 p.

  Research output: Contribution to conference › Paper › peer-review

  Open Access

  File

• Deep Generative Networks for Nondestructive Cylinder Liner Inspection in Large Internal Combustion Engines

  Angermann, C., Laubichler, C., Kiesling, C., Dreier, F., Haltmeier, M. & Jónsson, S., 11 Apr 2023, In: SAE Technical Papers. 12 p., 2023-01-0066.

  Research output: Contribution to journal › Conference article › peer-review

  • RGB Image 100%
  • Internal Combustion Engine 50%
  • High Resolution 50%
  • Power Generation 50%
  • Deep Learning 50%

• Development of an 1D Multicylinder Engine Model to Predict Knocking and Emissions of Large Gas Engines

  Dimitrov, D., Kammel, G., Egert, E., Wermuth, N. & Wimmer, A., 26 Jun 2023, Proceedings trans & MOTAUTO 2023. Sofia: Scientific-Technical Union of Mechanical Engineering „Industry-4.0", p. 54 - 57 4 p. (Proceedings trans&MOTAUTO).

  Research output: Chapter in Book/Report/Conference proceeding › Conference paper

• Development of lubricants for hydrogen-fueled large engine power plants

  Koch, W., Pearson, L., Wermuth, N., Fimml, W., Baumann, Z., Schneßl, E., Oppl, T., Lackner, M., Korres, S., Geist, E., Gary-Pathane, D. & Glow, O., 12 Jun 2023. 18 p.

  Research output: Contribution to conference › Paper › peer-review

  Open Access

  File

• Enhancement of large engine technology through machine learning

  Kiesling, C., Laubichler, C., Pirker, G., Posch, S., Wohlthan, M. & Wimmer, A., 12 Jun 2023, CIMAC Congress 2023, Busan . 17 p. 069

  Research output: Chapter in Book/Report/Conference proceeding › Conference paper › peer-review

  Open Access

  File

  • Learning Approach 100%
  • Machine Learning 100%
  • Machine Learning Approach 66%
  • Internal Combustion Engine 50%
  • Simulation Method 50%

• Experimental and Simulation-assisted Investigations of PFI and DI Combustion Concepts for Hydrogen-fueled Large Bore Engines

  Lackner, M., Gumhold, C., Wermuth, N. & Wimmer, A., 10 May 2023, Tagungsband/Proceedings 12. Tagung Einspritzung und Kraftstoffe: 10./11. Mai 2023, Dessau-Roßlau, Sachsen-Anhalt. WTZ Roßlau GmbH (ed.). Rostock: FVTR Forschungszentrum für Verbrennungsmotoren und Thermodynamik Rostock GmbH, p. 34 - 46 12 p.

  Research output: Chapter in Book/Report/Conference proceeding › Conference paper

  • Abnormal Combustion Phenomenon 100%

• Exploring the use of advanced ceramics for spark plug electrodes of large gas engines

  Gruber, M., Harrer, W., Tilz, A., Engelmayer, M., Fimml, W., Wimmer, A. & Bermejo, R., 14 Jun 2023. 1 p.

  Research output: Contribution to conference › Abstract

• Feasibility study on electrically conductive joining of MoSi2 electrodes for spark plugs

  Gruber, M., Tilz, A., Harrer, W., Papsik, R., Fimml, W. & Engelmayer, M., 1 Sept 2023, In: International Journal of Applied Ceramic Technology . 20, 5, p. 3257-3266 10 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  • Brazing 100%
  • Inert Gas Welding 25%

• Finding the Optimum Design of Large Gas Engines Prechambers using CFD and Bayesian Optimization

  Posch, S., Gößnitzer, C., Rohrhofer, F. M., Geiger, B. & Wimmer, A., 12 May 2023, Scientific Computing 2023: Conference Proceedings. Granigg, W. (ed.). Graz: Verlag der FH JOANNEUM Gesellschaft mbH, p. 160 - 168 9 p.

  Research output: Chapter in Book/Report/Conference proceeding › Conference paper › peer-review

• Greenhouse Gas Emissions Reduction on High-Speed Large Engines

  Estebanez, G., Kammerdiener, T., Schmidleitner, K., Rustler, M. & Malin, M., 12 Jun 2023. 15 p.

  Research output: Contribution to conference › Paper › peer-review

  Open Access

  File

• Green Tech Radar: Grünes Ammoniak: Schlüsselbaustein für die Dekarbonisierung von Energiewirtschaft, Schifffahrt, Landwirtschaft & Industrie

  Klawitter, M., Pirker, G., Sauperl, I., Gößnitzer, C. & Simbürger, M., 23 Mar 2023, 8 p. Graz : Green Tech Valley Cluster GmbH.

  Research output: Other contribution › Brochure

• Hybrid model predictive control of renewable microgrids and seasonal hydrogen storage

  Thaler, B., Posch, S., Wimmer, A. & Pirker, G., 15 Dec 2023, In: International Journal of Hydrogen Energy. 48, 97, p. 38125-38142 18 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  • Hydrogen Storage 100%
  • Renewables 100%
  • Hybrid Model Predictive Control 100%
  • Microgrid 100%
  • Predictive Control Model 100%

• In-cylinder pressure reconstruction from engine block vibrations via a branched convolutional neural network

  Ofner, A. B., Kefalas, A., Posch, S., Pirker, G. & Geiger, B. C., 15 Jan 2023, In: Mechanical Systems and Signal Processing. 183, 109640.

  Research output: Contribution to journal › Article › peer-review

  • Peak Pressure 100%
  • Slow Combustion 50%

• Influence of blend ratio on turbocharging & combustion in HS gas eng. applications with CH4/H2 blend

  Ryser, R., Bessonnard, C., Martin, H., Fimml, W., Wermuth, N. & Wimmer, A., 12 Jun 2023. 15 p.

  Research output: Contribution to conference › Paper › peer-review

  Open Access

  File

• Injection rate control strategy with Bosch Smart CR Injector for optimized injection performance

  Henrion, T., Moesenbichler, F., Redtenbacher, C., Malin, M., Bernhaupt, M., Wrede, R. & Stein, J-O., 12 Jun 2023. 15 p.

  Research output: Contribution to conference › Paper › peer-review

  Open Access

  File

• Laser Patterning of Thin Film Sensors on Bearing Shells

  Düsing, J. F., Koch, J., Marques da Silva, M., Kiesling, C., Kober, M., Gasperlmair, T., Hager, G., Jäschke, P., Overmeyer, L. & Kaierle, S., 13 Jun 2023. 1 p.

  Research output: Contribution to conference › Abstract › peer-review

• Laser structured thin film sensor technology for sliding bearings in internal combustion engines

  Kiesling, C., Marques da Silva, M., Kober, M., Wimmer, A., Düsing, J. F. & Hager, G., 17 Oct 2023, (Accepted/In press) In: Journal of Engineering for Gas Turbines and Power. 146, 8, 081008.

  Research output: Contribution to journal › Conference article › peer-review

  • Internal Combustion Engine 100%
  • Thin Films 100%
  • Sliding Bearing 100%
  • Condition Monitoring 66%
  • Lubrication 50%