Detemination of a heat transfer between injected diesel fuel and a temperature controlled wall

• Autorzy: Jedrzejowski S. , Magnusson A. , Andersson S.
• Języki publikacji: EN

Abstrakty

EN

The paper presents results of the experimental determination of heat fluxes between diesel fuel jet and a steel wall. The experiments were performed in the high pressure and temperature rig at the Chalmers University. The experimental stand allowed setting the pressures and the temperatures in the chamber similar to the conditions in a diesel engine during the compression stroke. A standard common rail injecting system and an injector with a single hole nozzle were used. The measurements were taken for different pressures/temperature combinations. However, in respect to have similar jet formation conditions and fuel droplets penetration range, the air density in the chamber was kept on constant level. The temperature-controlled wall was mounted perpendicular to the fuel jet. The wall was equipped with coaxial thermocouples for recording the surface temperatures. The thermocouples had very thin vacuum deposited junctions that offered very fast response. The recorded time histories of the surface temperatures were used to calculate the local heat fluxes on a basis of the one-dimensional transient heat conduction model. The experimental chamber had an optical access allowing observing the jet and the swirl formation when the fuel reached the wall. A high-speed camera was used to record the jet behaviour.

Słowa kluczowe

EN

heat transfer; spray-wall interaction; diesel fuel injection

• 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: 2006
• Tom: Vol. 13, No. 2
• Strony: 179--185
• Opis fizyczny: Bibliogr. 7 poz., rys.

Twórcy

autor

Jedrzejowski S.

autor

Magnusson A.

autor

Andersson S.

• Department of Thermal Technology and Refrigeration Technical University of Lodz, Stefanowskiego 1/15, 90-924 Lodz, Poland tel.: [phone],

Bibliografia

• [1] Carslaw, H.S., H.S. Jaeger, J.C., Conduction of heat in solids, Oxford University Press, Oxford, 1959, pp 30-32, 62-64.
• [2] Hall, G.J., Herzberg, A., Recent advances in transient temperature thermometry, Jet Propulsion 11, (1958), pp. 719-723.
• [3] Jedrzejowski, S., Influence of material thermal properties on instantaneous heat flux measurements using an eroding thermocouple, Advanced Computational Methods in Heat Transfer VI, WIT Press, Southampton, UK and Boston, USA. 2000, pp. 617-626.
• [4] Magnusson, A., Person, F., Andersson, M., Andersson, S., A comparison of spray properties for a model fuel and standard diesel using several optical methods, 19th Ilass Europe’04, pp. 356-360.
• [5] Matsson, A., Andersson, S., The effect of non circular nozzle holes on combustion and emmission formation in a heavy duty diesel engine, SAE Technical Paper 2002-01-2671.
• [6] Pickett, L.M., Lopez, J.J., Jet-wall interactions on diesel combustion and soot formation, SAE Technical Paper 2005-01-0921.
• [7] Osuka, I., Nishimura, M., Tanaka, Y., Miyaki, M., Benefits of a new fuel injection technology on cold startability and white smoke reduction by means of multi injection with common rail fuel system (ECD-12), SAE Technical Paper 940586.