VEHICLE ENGINES. APPLICATION OF FUELS TYPES. EFFICIENCY
1D simulation-based development of a safety concept for the investigation of a high-pressure gas-diesel injector on a single-cylinder research engine
- 1 LEC GmbH (Large Engines Competence Center), Graz, Austria
- 2 Graz University of Technology, Graz, Austria
Abstract
1D simulation has significantly supported the process of developing a diesel ignited high-pressure gas direct injection combustion concept, thus facilitating promising investigations at the SCE. It has been applied to a variety of tasks such as designing the media supply system, pre-optimizing engine operating parameters and developing the safety concept discussed in this paper. Application depends on two simulation models in particular: one validated MCE model and one SCE model enhanced in the course of the concept design phase. Since the MCE model can reliably reproduce the behavior of a full engine with single-stage turbocharging, it played a critical role in determining the boundary conditions for both the 3D-CFD simulation and the simulations with the SCE model. The SCE model, on the other hand, includes all components relevant for the test bed and thus permits both a reliable design of the gas path and the development of a safety concept, which is of remarkable importance for high-pressure gas applications. With regard to the safety concept, this paper presents and discusses the difficulties in detecting injector malfunction and different detection strategies.
Keywords
References
- Beutler, M.; Naumann, M.: “Erdgas – Ein alternativer Kraftstoff für den Verkehrssektor – Teil 1: Allgemeine technische Aspekte, Kostenabschätzung und Energiekettenbetrachtung”, in: “ATZ Automobiltechnische Zeitschrift”, Vol. 100, Issue No. 9, 1998, pp. 648-656
- Kießling, C.; Tilz, A.; Nickl, A. et al.: “Evaluation of Gas Injection Valves for Large Engines by Means of Spray Momentum Measurement”, contribution at conference: “11. Tagung Einspritzung und Kraftstoffe“, Berlin, 2018
- Redtenbacher, C.; Malin, M.; Kiesling, C. et al.: "Gas and Dual Fuel Combustion Concepts: The Better Combustion Concepts for Large Engines?", in: "16. FAD-Konferenz. Herausforderung – Abgasnachbehandlung für Dieselmotoren. 7.11.-8.11.2018 in Dresden. Beiträge", Dresden, 2018, pp. 201-226.
- Redtenbacher, C.; Kiesling, C.; Wimmer, A. et al.: "Dual Fuel Brennverfahren – Ein zukunftsweisendes Konzept vom PKW- bis zum Großmotorenbereich?", in: Lenz, H. P. (ed.): "37th International Vienna Motor Symposium 28-29 April 2016. Volume 2: second day" (=Fortschritt-Berichte VDI Reihe 12, Nr. 799), Düsseldorf, 2016, pp. 403-428.
- Blöckhoff, N.; Hanenkamp, A.: “Der 51/60DF von MAN Diesel SE – Der leistungsstärkste 4-Takt Dual Fuel Motor”, in: WTZ Roßlau gGmbH (ed.): “Conference Proceedings, 5th Dessau Gas Engine Conference”, Dessau, 2007, pp. 216-229
- Mohr, H.; Frobenius, M.: “Optimierung von Diesel-/GasGroßmotoren für unterschiedlichste Anwendungen”, in: Harndorf, H. (ed.): “Die Zukunft der Großmotoren III, 3. Rostocker Großmotorentagung”, Rostock, 2014, pp. 138-149
- Wärtsilä Corporation: “Wärtsilä 32GD Technology Review”, 2009. Accessible on the internet at: http://www.wartsila.com/file/Wartsila/en/1270037664966a1267106724867-W32GD_technology_review_2009_UK.pdf, accessed on: 2013-08-02
- Järf, C.; Sutkowski, M.: "The Wärtsilä 32GD engine for heavy gases", in: "Combustion Engines", Vol. 2, Issue 137, 2009, pp. 3-11
- Aßmus, , K.; Redtenbacher, C.; Winter, H. et al.: "Simulation Based Predesign and Validation of a Diesel Ignited High-pressure Gas Direct Injection Combustion Concept", in: Leipertz, A. (ed.): "Engine Combustion and Alternative Concepts – ENCOM 2019" (= Berichte zur Energie- und Verfahrenstechnik (BEV), Vol. 19.1), Erlangen, 2019, pp. 83-94.
- Wimmer, A.; Golloch, R.; Auer, M.: "Großgasmotoren" in: Merker, G. P.; Teichmann, R. (Hrsg.): "Grundlagen Verbrennungsmotoren", 2018, pp. 241-244.