This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Potential of Exhaust Energy Use for Charge Air Cooling in Supercharged Diesel Engines
Technical Paper
2010-36-0478
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
A rough estimate of the energy components in internal combustion
engines for motor vehicles indicates that the total fuel energy is
converted to one-third each into mechanical energy, engine coolant
heat and exhaust energy. This large share of waste heat in the
exhaust motivates various attempts to recover the remaining exergy
in the exhaust. Intensifying charge air cooling by an
exhaust-heat-driven cooling system provides a promising approach to
engine waste heat recovery. The exhaust energy is most suitable for
this recovery effort due to its higher temperature level in
comparison to engine coolant.
A further decreasing of charge air temperature provides an
additional degree of freedom, which expands the boundaries
concerning engine application. In diesel engines, this intensified
charge air cooling decreases cylinder temperature level, which can
be used to reduce nitrogen oxide emissions in the raw exhaust at
constant brake efficiency or vice versa to improve brake efficiency
at constant nitrogen oxide emissions. Simulation results from the
diesel engine described in this paper show a decrease of nitrogen
oxide emission up to 37% at constant brake efficiency. Leaving the
level of nitrogen oxide emissions unchanged led to an increase of
the brake efficiency up to 4.7%.
Recommended Content
Authors
Topic
Citation
Kadunic, S., Wiedemann, B., and Kipke, P., "Potential of Exhaust Energy Use for Charge Air Cooling in Supercharged Diesel Engines," SAE Technical Paper 2010-36-0478, 2010, https://doi.org/10.4271/2010-36-0478.Also In
References
- Diehl, P. Haubner, F. Klopstein, S. Koch, F. “Exhaust Heat Recovery System for Modern Cars,” SAE Technical Paper 2001-01-1020 2001 10.4271/2001-01-1020
- Patterson, A.T.C. Tett, R.J. McGuire, J. “Exhaust Heat Recovery using Electro-Turbogenerators,” SAE Technical Paper 2009-01-1604 2009 10.4271/2009-01-1604
- Hountalas, D.T. Katsanos, C.O. Lamaris, V.T. “Recovering Energy from the Diesel Engine Exhaust Using Mechanical and Electrical Turbocompounding,” SAE Technical Paper 2007-01-1563 2007 10.4271/2007-01-1563
- Hopmann, U. “Diesel Engine Waste Heat Recovery Utilizing Electric Turbocompound Technology” 2004 Diesel Engine-Efficiency an Emissions Research Conference USA
- Fleurial, J.-P. “Recent Advances in Thermoelectric Power Generation Technology and Terrestrial Application Opportunities” Thermolektrik Jänsch, Daniel verlag Renningen 2009
- Friedrich, H. et al. “Strom aus Abgasen - Fahrzeuggerechte Entwicklung thermoelektrischer Generatoren” ATZ 112 2010 4 292 299
- Liebl, J. et al. “Der thermoelektrische Generator von BMW macht Abwärme nutzbar” MTZ 70 2009 3 272 281
- Feulner, P. “Zusätzliche Energiewandler in zukünftigen Antrieben” MTZ 69 2009 9 714 721
- Freymann, R. et al. “Der Turbosteamer: Ein System zur Kraft-Wärme-Kopplung im Automobil” MTZ 68 2008 5 404 412
- Meyer, R.C. Shahed, S.M. “An Intake Charge Cooling System for Application to Diesel, Gasoline and Natural Gas Engines,” SAE Technical Paper, 910420 1991 10.4271/910420
- Reulein, H. “Einfluss der Turbokühlung und des Miller-Verfahrens auf die Leistung von aufgeladenen Gasmotoren” MTZ 31 1970 1 1 10
- Ramsperger, F. et al. “Steigerung des Wirkungsgrades von Ottomotoren durch eine abgaswärmegetriebene Kälteanlage” MTZ 71 2010 2 122 127
- Bouvy, C. “Kälte aus Wärme Adsorptionstechnik für die Klimatisierung im Automobil” ATZ 112 2010 4 236 241