Development of a 1D simulation model to optimize performance and emissions of large gas engines

Dimitar Dimitrov*, Gernot Kammel, Erich Egert, Nicole Wermuth, Andreas Wimmer

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference paper

Abstract

The main subject of this paper is the development of a multicylinder engine model for the prediction and optimization of engine performance based on one-dimensional (1D) simulation. 1D simulation is widely used to preoptimize engine geometry and operating parameters to achieve performance targets and comply with operational and emission constraints. Due to the short calculation times, 1D
simulation allows the evaluation of a larger number of variants. As new engine concepts are developed, many operating parameters are first defined and optimized with a 1D multicylinder engine model. This model illustrates the full complexity of the engine with its geometry, turbocharging and combustion parameters. In this paper the design of experiments (DoE) method is used in connection with 1D simulation to determine the optimal engine configuration as well as parameters related to the combustion process, i.e., valve timing, compression ratio, ignition timing, excess air ratio. This approach enables the determination of the maximum engine efficiency while taking the boundary
conditions and the constraints of nitrogen oxide emissions (NOx) and knock into account. The method also enables the reduction of the cylinder-to-cylinder deviations by improving the gas dynamics and the fuel metering in the main combustion chamber and in the prechamber, which is especially important for the multicylinder engine. The simulation results are validated with experimental investigations on a single cylinder research engine
Original languageEnglish
Title of host publicationProceedings trans & MOTAUTO 2022
PublisherScientific-Technical Union of Mechanical Engineering „Industry-4.0"
Pages100 - 103
Number of pages4
Publication statusPublished - 20 Jun 2022
Event30th International Scientific Conference on Transport, Road-Building, Agricultural, Hoisting & Hauling and Military Technics and Technologies : trans&MOTAUTO 2022 - Varna, Bulgaria
Duration: 20 Jun 202223 Jun 2022

Conference

Conference30th International Scientific Conference on Transport, Road-Building, Agricultural, Hoisting & Hauling and Military Technics and Technologies
Abbreviated titletrans&MOTAUTO 2022
Country/TerritoryBulgaria
CityVarna
Period20/06/2223/06/22

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