This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Stratified Diesel Fuel-Water-Diesel Fuel Injection Combined with EGR-The Most Efficient In-Cylinder NOx and PM Reduction Technology
Annotation ability available
Sector:
Language:
English
Abstract
For meeting 21st-century exhaust emission standards for HD diesel engines, new methods are necessary for reducing NOx and PM emissions without increasing fuel consumption. The stratified diesel fuel-water-diesel fuel (DWD) injection in combination with exhaust gas recirculation (EGR) is as a means for NOx and PM reduction without any negative effect on fuel economy. The investigation was performed on a charged HD single-cylinder direct-injection diesel engine with a modern low-swirl combustion system, 4-valve technology and high pressure injection. The application of DWD injection combined with EGR resulted in a 60 percent lower NOx emission at full load and a 75 percent reduced NOx emission at part load when compared with present day (EURO II) technology. This was achieved without any fuel economy penalty, but with an additional PM emission reduction. The European EURO IV emission limits under discussion of NOx < 3.0 g/kWh and PM < 0.01 g/kWh appear to be achievable with retained fuel economy. The disadvantage of the DWD+EGR technology, however, is the fairly large expenditure. Particularly for vehicle application some more technical solutions will have to be developed, e.g. anti-freezing and safety functions in case of water failure.
Recommended Content
Authors
Topic
Citation
Wirbeleit, F., Enderle, C., Lehner, W., Raab, A. et al., "Stratified Diesel Fuel-Water-Diesel Fuel Injection Combined with EGR-The Most Efficient In-Cylinder NOx and PM Reduction Technology," SAE Technical Paper 972962, 1997, https://doi.org/10.4271/972962.Also In
References
- Velji, A. Remmels, W. Schmidt, R.M. Water to Reduce NOx Emissions in Diesel Engines - A Basic Study CIMAC Congress 1995
- Dürnholz, M. Endres, H. Schöppe, D. “Maßnahmen zur Verminderung der Schadstoffemission bei Nutzfahrzeugmotoren.” Motor-technische Zeitschrift 53 1992 9
- Odaka, M. Koike, N. Yoshida, K. Tsukamoto, Y. Narasawa, K. Effects of EGR with a Supplemental Manifold Water Injection to Control Exhaust Emissions from a Heavy-Duty Diesel Engine SAE 9107390
- Binder, K. Wirbeleit, F. Raab, A. Lehner, W. Einfluß der Emulsionsqualitat auf die HC-Emission von Dieselmotoren 1989
- Binder, K. Lehner, W. Raab, A. Wirbeleit, F. Réduction des émissions de particules (PM) et NOx par l'injection de liquides différents
- Wirth, R. Entwicklung von kombinativen optischen Meßtechniken zur Untersuchung der Strahlausbreitung, Gemischbildung und Zündung unter dieselmotorischen Temperaturen und Drücken Dissertation Universität Stuttgart 1995
- Wagner, E. Wirth, R. Binder, K. Einspritzseitige Maßnahmen zur Erfüllung künftiger Standards 1995
- Havenith, C. Edwards, S.P. Such, C.H. Needham, J.R. Development of a Heavy-Duty Diesel Engine towards EURO III Using Exhaust Gas Recirculation SIA
- Havenith, C. Verbeek, R.P. Heaton, D.M. van Slooten, P. Development of a Urea DeNOx Catalyst Concept for European Ultra-Low Emission Heavy-Duty Diesel Engines SAE 952652
- Krämer, M. Wirbeleit, F. Enderle, Ch. Lehner, W. Binder, K. Potentiale der geschichteten Diesel/Wasser-Einspritzung (DIWA) zur Absenkung der NOx- und PM-Emission am modernen Nutzfahrzeug-Dieselmotor Wiener Motorensymposium 1996