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Schröder, Lukas ; Hillenbrand, Thomas ; Brüggemann, Dieter:
Evaluation of the combustion process of directly injected methane in a rapid compression machine with a laser-based ignition system and an electrical ignition system.
In: Energy.
Bd. 289
(2024)
.
- 129940.
ISSN 1873-6785
DOI: https://doi.org/10.1016/j.energy.2023.129940
Abstract
In order to reduce exhaust gas emissions, the application of lean operation in internal combustion engines has great potential. Experiments have been carried out in a rapid compression machine with directly injected methane comparing two laser ignition systems based on Nd:YAG lasers with an electrical ignition system. Three stratified extremely lean mixtures are ignited with up to 3 consecutive ignition pulses. This application-oriented investigation with the novel approach of combining laser ignition with a stratified charge in a rapid compression machine provides essential insights into the combustion process. The results highlight the advantages of laser ignition systems. The maximum pressure is increased by up to 9.5 %. The indicated work is increased by up to 16 % and cyclic variations are reduced by up to 35 %. The advantages increase as the mixture becomes leaner. A positive influence of multiple pulses can be observed as the ignition probability and the cyclic variations improve by up to 20 % per pulse and 25 % per pulse, respectively for the laser ignition. The evaluation shows that shorter pulse durations with a higher power achieve improved values for successful ignitions while longer pulses and a higher pulse energy achieve higher ignition probability values.
Weitere Angaben
| Publikationsform: | Artikel in einer Zeitschrift |
|---|---|
| Begutachteter Beitrag: | Ja |
| Institutionen der Universität: | Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Technische Thermodynamik und Transportprozesse Profilfelder > Emerging Fields > Energieforschung und Energietechnologie |
| Titel an der UBT entstanden: | Ja |
| Themengebiete aus DDC: | 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften |
| Eingestellt am: | 21 Feb 2024 11:18 |
| Letzte Änderung: | 21 Feb 2024 11:18 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/88660 |