This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Evaluation of Water Injection Strategies for NOx Reduction and Charge Cooling in SI Engines
Technical Paper
2019-01-2164
ISSN: 0148-7191, e-ISSN: 2688-3627
This content contains downloadable datasets
Annotation ability available
Sector:
Language:
English
Abstract
Water injection in spark-ignition engines is one key technology for increasing power, improving fuel efficiency by mitigating knock and meeting future emission standards and is extensively researched today. Finding a suitable injection strategy is necessary to commercially exploit the potential of water injection. In order to evaluate water injection strategies, a better understanding of the mixture formation with water injection is required. Indirect port and direct water injection strategies were compared by highly time resolved in-cylinder water concentration and temperature measurements using an optical spark plug probe. The ignition conditions, mixture formation and performance were assessed in a single cylinder research engine equipped with water injection technology. Variations of engine speed, water/fuel ratio and water injection timing were performed and the effects on exhaust gas temperature and engine-out emissions analyzed in detail. At different operating points, a comparison of direct and indirect water injection concepts was made with regard to mixture formation. The spark plug probe enabled a local assessment of the ignition conditions near the spark. Furthermore, a water efficiency number could be obtained by measuring the in-cylinder temperature directly. In conclusion, a better understanding of water injection is reached and optimum water injection strategies in terms of NOx reduction and charge cooling are derived.
Authors
Topic
Citation
Kauf, M., Gern, M., and Seefeldt, S., "Evaluation of Water Injection Strategies for NOx Reduction and Charge Cooling in SI Engines," SAE Technical Paper 2019-01-2164, 2019, https://doi.org/10.4271/2019-01-2164.Data Sets - Support Documents
Title | Description | Download |
---|---|---|
Unnamed Dataset 1 | ||
Unnamed Dataset 2 |
Also In
References
- De Cesare , M. , Cavina , N. , and Paiano , L. Technology Comparison for Spark Ignition Engines of New Generation SAE International Journal of Engines 10.2017-24-0151 2513 2534 2017
- Pauer , Thomas et al. Optimierung von Ottomotoren durch Wasser-Einspritzung Optimization of Gasoline Engines by Water Injection 37th Internationales Wiener Motorensymposium 2016 2016 1 15
- Durst , B. ; Unterweger , G. ; Rubbert , S. ; Witt , A. ; Böhm , M. Thermodynamische Wirkung der Wassereinspritzung beim Ottomotor - ein Konzeptvergleich 15. Konferenz „The Working Process of the Internal Combustion Engine
- Gern , M. ; Kauf , M. ; Baar , R. Conference IMECHE - Fuel Systems for IC Engines,
- Bauke , Stephan et al. Optical sensor system for time-resolved quantification of methane concentrations: Validation measurements in a rapid compression machine Journal of Quantitative Spectroscopy and Radiative Transfer 210 101 110 2018
- Berg , Thomas et al. Measurement of in-cylinder mixture formation by optical indication MTZ worldwide 74 6 26 30 2013
- Spicher , Ulrich Direkteinspritzung im Ottomotor . Vol. 5
- Battistoni , Michele et al. Assessment of Port Water Injection Strategies to Control Knock in a GDI Engine through Multi-Cycle CFD Simulations No. 2017-24-0034 . SAE Technical Paper 2017
- Hunger , Matthias , et al. Potential of Direct Water Injection to Reduce Knocking and Increase the Efficiency of Gasoline Engines International Conference on Knocking in Gasoline Engines Springer, Cham 2017
- Hoppe , Fabian et al. Water injection for gasoline engines: Potentials, challenges, and solutions International Journal of Engine Research 17 1 86 96 2016
- Thewes , Matthias et al. Wassereinspritzung für ottomotorische Brennverfahren MTZ-Motortechnische Zeitschrift 76 2 26 31 2015
- Hoppe , Fabian et al. Evaluation of the Potential of Water Injection for Gasoline Engines SAE International Journal of Engines 10.2017-24-0149 2500 2512 2017
- Bhagat , Meghraj et al. Experimental and numerical study of water spray injection at engine-relevant conditions No. 2013-01-0250 . SAE Technical Paper 2013
- Netzer , Corinna et al. Numerical Analysis of the Impact of Water Injection on Combustion and Thermodynamics in a Gasoline Engine using Detailed Chemistry No. 2018-01-0200 . SAE Technical Paper 2018
- Vaudrey , Alexandre Thermodynamics of indirect water injection in internal combustion engines: Analysis of the fresh mixture cooling effect International Journal of Engine Research 2018
- Böhm , Martin et al. Funktionale Integration einer wassereinspritzung in den Ottomotor MTZ-Motortechnische Zeitschrift 77 1 38 43 2016
- Kim , Jaeheun et al. Effects of water direct injection on the torque enhancement and fuel consumption reduction of a gasoline engine under high-load conditions International Journal of Engine Research 17 7 795 808 2016
- Hermann , Ingo , et al. Water Injection for Gasoline Engines-Quo Vadis? International Conference on Knocking in Gasoline Engines Springer, Cham 2017
- Marchitto , Luca et al. Effect of Water Injection on Fuel Efficiency and Gaseous and PN Emissions in a Downsized Turbocharged SI Engine Journal of Energy Engineering 144 4 2018
- Heinrich , Christoph et al. Gasoline Water Direct Injection (GWDI) as a Key Feature for Future Gasoline Engines Springer, Cham International Conference on Knocking in Gasoline Engines 2017
- Lanzafame , R. Water injection effects in a single-cylinder CFR engine No. 1999-01-0568 . SAE Technical Paper 1999