This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Investigation Regarding the Influence of a Catalytic Combustion Chamber Coating on Gasoline Combustion Characteristics, Emission Formation and Engine Efficiency
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 16, 2012 by SAE International in United States
Annotation ability available
Over the past few years, both global warming and rising oil prices led to a significantly increased demand for low fuel consumption in passenger cars. However, the necessity to also meet the limits of today's and future emission regulations makes it more and more difficult to maintain a high engine efficiency without the use of an expensive external exhaust gas after-treatment system. Therefore, new technologies that simultaneously prevent emission formation and reduce fuel consumption inside the internal combustion engine during the combustion process itself are of highest interest.
This paper analyzes the influence of a catalytic coating of the combustion chamber on combustion, emission formation and fuel consumption. For this purpose, test runs with a production 2.0-liter, 4-cylinder, 4-valve, double overhead camshaft (DOHC), port fuel injection (PFI) gasoline engine were performed. The various possible benefits of the catalytic coating mentioned above were separated by different engine setup combinations. The coated configuration was optimized in terms of its part load performance with special focus on fuel consumption and emissions, and thereafter compared to the baseline engine configuration. Subsequently, the optimization results were used for a simulation of the fuel economy during an FTP75 cycle. Additionally, an in-depth analysis of the combustion process of the different configurations using indication data and emission measurements was performed.
The analysis of the performed tests shows an increase of combustion speed shortly after ignition using catalytic-coated engine parts. This leads to a steeper and higher pressure gradient and hence better combustion stability under lean conditions. The coating and especially the possibility to change maximum brake torque (MBT) spark timing due to the changed combustion characteristics caused by the coating also affect NOX and HC emissions at some load conditions.
CitationHaenel, P., Kleeberg, H., Tomazic, D., and Dolan, S., "Investigation Regarding the Influence of a Catalytic Combustion Chamber Coating on Gasoline Combustion Characteristics, Emission Formation and Engine Efficiency," SAE Technical Paper 2012-01-1097, 2012, https://doi.org/10.4271/2012-01-1097.
Diesel Exhaust Emission Control, 2012
Number: SP-2324; Published: 2012-04-13
Number: SP-2324; Published: 2012-04-13
- Heywood, J.B. Internal Combustion Engine Fundamentals McGraw Hill 1988
- Kamo, R. Bryzik, W. Reid, M. Woods, M. “Coatings for Improving Engine Performance,” SAE Technical Paper 970204 1997 10.4271/970204
- Nakic, D. Assanis, D. White, R. “Effect of Elevated Piston Temperature on Combustion Chamber Deposit Growth,” SAE Technical Paper 940948 1994 10.4271/940948
- Mruk, A. Jordan, W. Taler, J. Lopata, S. et al. “Heat Transfer Through Ceramic Barrier Coatings Used in Internal Combustion Engines,” SAE Technical Paper 941779 1994 10.4271/941779
- Jones, R.L. Catalytic Combustion Effects in Internal Combustion Engines Combustion Science and Technology 129 1 185 195 1997
- Jones, R.L. Catalytic Combustion Effects in Internal Combustion Engines Surface and Coatings Technology 94-95 118 122 1997
- Hu, Z. Ladommatos, N. Reduction of unburned hydrocarbon emissions from spark ignition engines using in-cylinder catalyst Proceedings of the Institution of Mechanical Engineers Part D-Journal of Automobile Engineering 210 2 123 129 1996
- Nedunchezhian, N. Dhandaphani, S. Study of flame quenching and near-wall combustion of lean burn fuel-air mixture in a catalytically activated spark-ignited lean burn engine Combustion and Flame 144 407 409 2006
- Adamczyk, A.A. Rothschild, W. G. Fuel Storage in Combustion Chamber Ceramics and Hydrocarbon Emissions: A Connection Combustion Science and Technology 51 4 251 263 1987
- Soltic, P. Bach, C. Insulated and Catalyst-Coated Pistons (INCA) Schlussbericht Empa 2010
- Machida, M. Ikeda, S. Kurogi, D. Kijima, T. Low temperature catalytic NO x -H 2 reactions over Pt/ TiO 2 -ZrO 2 in an excess oxygen Applied Catalysis B: Environmental 35 107 116 2001
- Salem, I. Recent Studies on the Catalytic Activity of Titanium, Zirconium, and Hafnium Oxides Catalyst Reviews 45 2 205 296 2003
- Reddy, B.M. Khan, A. Recent Advances on TiO 2 -ZrO 2 Mixed Oxides as Catalyst and Catalyst Support Catalyst Reviews 47 257 296 2005
- Warnatz, J. Maas, U. R.W. Dibbel Verbrennung Springer 2001
- Stiesch, G. Modeling Engine Spray and Combustion Process Springer 2003
- MTS Corporation CAS Software Manual 2000
- Marr, M.A. Wallace, J.S. Pershin, L. Chandra, S. Mostaghimi, J. Preliminary Testing of Metal-Based Thermal Barrier Coating in a Spark-Ignition Engine Journal of Engineering for Gas Turbines and Power 132 2010