Optical diagnostics of the cycle-to-cycle variation in the kernel development and abnormal combustion: SI small engine

• Autorzy: Ballais , Gallardo-Ruiz J. M. , Merola S. S. , Sementa P. , Tornatore C.
• Języki publikacji: EN

Abstrakty

EN

The combustion stability and more in details the cyclic variability significantly influences the performance and the pollutant emissions of a spark ignition engine. In this work, an experimental research activity was carried out to investigate the influence of the different combustion phases on the cycle-to-cycle variation. In particular the flame kernel development and the fuel deposits burning were investigated by in-cylinder pressure measurements and optical investigations. Engine cycle resolved visualization was applied to characterize the spatial evolution of the flame front from the spark ignition until the exhaust phase. A numerical custom post-detection procedure was used to correlate the optical data with the pressure related parameters during the combustion process. The simultaneous use of optical diagnostics and pressure related analysis demonstrated the fundamental role of the first stage and late phase of the combustion on the spark ignition engine process. Flame kernel and diffusion controlled flame due to fuel deposits burning dominated the cyclic variability of in-cylinder combustion. The experiments were realized in a 250 cm3 single cylinder, port fuel injection, four-stroke spark ignition engine. The engine was optically accessible and it was equipped with the head, injection system and exhaust device of a commercial engine mounted on small motorcycles and scooters. Standard EURO IVgasoline was used.

Słowa kluczowe

EN

optical diagnostics; cycle-to-cycle variation; flame kernel; abnormal combustion; SI engine

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2010
• Tom: Vol. 17, No. 2
• Strony: 17--25
• Opis fizyczny: Bibliogr. 15 poz., rys.

Twórcy

autor

Ballais

autor

Gallardo-Ruiz J. M.

autor

Merola S. S.

autor

Sementa P.

autor

Tornatore C.

• SUPMECA/LISMMA-Paris, School of Mechanical and Manufacturing Engineering 3 rue Fernand Hainaut - 93407 Saint-Quen Cedex, France,

Bibliografia

• [1] Heywood, J. B., Internal Combustion Engine Fundamentals, McGraw Hill, 1988.
• [2] Galloni, E., Analyses about parameters that affect cyclic variation in a spark ignition engine, Applied Thermal engineering, Vol. 29, pp. 1131-1137, 2009.
• [3] Costanzo, V. S., Heywood, J. B., Mixture Preparation Mechanisms in a Port Fuel Injected Engine, SAE Technical Paper n. 2005-01-2080, 2005.
• [4] Nogi, T., Ohyama, Y., Yamauchi, T., Kuroiwa, H., Mixture Formation of Fuel Injection Systems in Gasoline Engines, SAE Technical Paper n. 880558, 1988.
• [5] Henein, N. A., Tagomori, M. K., Cold-start hydrocarbon emissions in port-injected gasoline engines, Progress in Energy and Combustion Science, Vol. 25, pp. 563-593, 1999.
• [6] Behnia, M., Milton, B. E., Fundamentals of fuel film formation and motion in SI engine induction systems, Energy Conversion and Management, Vol. 42, pp. 1751-1768, 2001.
• [7] Gold, M. R., Arcoumanis, C., Whitelaw, J. H., Gaade, J., Wallace, S., Mixture Preparation Strategies in an Optical Four-Valve Port-Injected Gasoline Engine, Int. J. of Engine Research, Vol. 1, pp. 41-56, 2000.
• [8] Bianco, Y., Cheng, W., Heywood, J., The Effects of Initial Flame Kernel conditions on Flame Development in SI Engines. SAE paper n. 912402, 1992.
• [9] Witze, P., Hall, M., Bennet, M. Cycle-resolved Measurements of Flame Kernel Growth and Motion Correlated with Combustion Duration. SAE paper n. 900023, 1990.
• [10] Zhu, G. S., Reitz, R. D., Xin, J., Takabayashi, T. ‘Modelling Characteristics of Gasoline Wall Films in the Intake Port of Port Fuel Injection Engines, Int. J. of Engine Research, Vol. 2 (4), pp. 231-248, 2001.
• [11] Merola, S. S., Sementa, P., Tornatore, C., Vaglieco, B. M., ‘Effect of Injection Phasing on Valves and Chamber Fuel Deposition Burning in a PFI Boosted Spark-Ignition Engine’, SAE Paper n. 2008-01-0428, 2008.
• [12] Witze, P. O., Green, R. M., ‘LIF and Flame-Emission Imaging of Liquid Fuel Films and Pool Fires in an SI Engine During a Simulated Cold Start’ SAE Paper n 970866, 1997.
• [13] Lee, K. H., Kim, K., Influence of initial combustion in SI engine on following combustion stage and cycle-by-cycle variations in combustion process, Int. Journal of Automotive Technology, Vol. 2 (1), pp. 25-31, 2001.
• [14] Mansour, M., Peters, N., Schrader, L. U., Experimental study of turbulent flame kernel propagation Experimental Thermal and Fluid Science, Vol. 32, pp. 1396-1404, 2008.
• [15] Zervas, E., Correlations between cycle-to-cycle variations and combustion parameters of a spark ignition engine, Applied Thermal Engineering. Vol. 24, pp. 2073-2081, 2004.