The use of carbon-free fuels such as hydrogen instead of conventional fuels such as natural gas in large engines helps to reduce greenhouse gas emissions. The experimental investigation using optical measurement techniques aims to reveal the mechanisms behind combustion anomalies in a high-speed large engine. Target: The aim of this work is to develop an automated tool for analyzing and…
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Investigation of pre-ignition in a hydrogen-fueled large engine
Large engines have the potential to play a key role in sustainable energy systems if they are operated with renewable fuels. In particular engine operation with hydrogen, however, is currently limited with regard to maximum achievable power density due to the occurrence of pre-ignition phenomena. In this study, a combination of experimental investigations on an optically instrumented single-cylinder research engine…
Development of a simulation program for investigating the multi-body system piston-piston rings-cylinder liner with regard to oil transport
Abnormal combustion phenomena such as pre-ignition pose a major problem for large hydrogen-powered gas engines, as they limit the maximum achievable power and, in the worst case, can cause damage to the engines. One cause of pre-ignition is lubricating oil or its residues being carried into the combustion chamber via the piston rings.Target: The aim of this work is to…
Development of a simulation program to investigate the influence of piston ring movement on oil transport
Abnormal combustion phenomena such as pre-ignition pose a major problem for large hydrogen-powered gas engines, as they limit the maximum achievable power and, in the worst case, can cause damage to the engines. One cause of pre-ignition is lubricating oil or its residues being carried into the combustion chamber via the piston rings.Target: The aim of this work is to…
Simulation-based investigation of the multi-body system piston-piston rings-cylinder liner with regard to oil transport
Abnormal combustion phenomena such as pre-ignition pose a major problem for large hydrogen-powered gas engines, as they limit the maximum achievable power and, in the worst case, can cause damage to the engines. One cause of pre-ignition is lubricating oil or its residues being carried into the combustion chamber via the piston rings.Target: The aim of this work is to…
Women in Research @ LEC – Where Talent, Diversity and Excellence Meet
Equal opportunities and diversity are core values at the LEC. They are not an add-on, but a key success factor in conducting internationally leading research today. On the occasion of the International Day of Women and Girls in Science, we are especially pleased that our Scientific Director, Prof. Nicole Wermuth, has been honored with the Spirit Award Women in Science….
Detailed investigation of pre-ignition in a large spark-ignited hydrogen port fuel injected internal combustion engine by means of optical investigations on a single-cylinder research engine and 3D-CFD simulation
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BY 4.0″,”de_DE”:”CC BY 4.0″}},”visibleOnPortalDate”:”2026-02-12″,”doi”:”10.1177/14680874251407722″,”versionType”:{“uri”:”/dk/atira/pure/researchoutput/electronicversion/versiontype/publishersversion”,”term”:{“en_GB”:”Final published version”,”de_DE”:”Endgu00fcltige, publizierte Fassung”}}}],”links”:[{“pureId”:105675736,”url”:”https://www.scopus.com/pages/publications/105029912314″,”description”:{“en_GB”:”Link to publication in Scopus”,”de_DE”:”Verknu00fcpfung zur Publikation in Scopus”},”linkType”:{“uri”:”/dk/atira/pure/links/researchoutput/scopuspublication”,”term”:{“en_GB”:”Scopus publication”,”de_DE”:”Scopus-Publikation”}}}],”keywordGroups”:[{“typeDiscriminator”:”ClassificationsKeywordGroup”,”pureId”:105459014,”logicalName”:”/dk/atira/pure/core/oefos2012″,”name”:{“en_GB”:”Austrian Fields of Study 2012 (6-stellig)”,”de_DE”:”u00d6FOS 2012 (6-stellig)”},”classifications”:[{“uri”:”/dk/atira/pure/core/oefos2012/203/203027″,”term”:{“en_GB”:”203027 Internal combustion…
CORNET-successful project CCS on Ships: Carbon Capture as a Practical Solution for Maritime Emissions
The maritime sector is facing the challenge of rapidly and effectively reducing its CO₂ emissions. While alternative fuels such as green ammonia or e-methanol will play a central role in the long run, they are not yet available in sufficient quantities in the short term. Existing vessels therefore remain dependent on conventional propulsion systems for the time being—while regulatory requirements…
Design Optimization of a Rapid Compression Machine
https://www.lec.at/job-entries/design-optimization-of-a-rapid-compression-machine/?lang=en
The Rapid Compression Machine at LEC is used for the investigation of ignition, combustion and knocking investigations of combustion engines. Due to the concept without a crank train, this machine can be used to simulate individual combustion cycles with great flexibility in terms of piston stroke, compression ratio and composition of the working gas. The optical access in the piston…
Fundamental Evaluation of Machine Learning-Based Digital Twin Systems for Predictive Maintenance of Large Engines in Maritime Settings
Machine learning-based digital twins or systems thereof have great potential to adequately model the behavior of complex systems and also directly provide valuable feedback to the physical entities. Digital twins of large internal combustion engines (ICEs) may, on the one hand, allow for a reliable depiction of the entire engine or key components. In combination with sensor readings, this depiction…