Ionization of in-cylinder charge during preflame period in compression ignition of mixtures

• Autorzy: Furutani M. , Sato M. , Shichi H. , Ohta Y.
• Języki publikacji: EN

Abstrakty

EN

Ion formation has been detected in cool and blue flames that appear during the preflame period of mixture ignition caused in a rapid compression machine. An ionization gap was installed in the combustion chamber. Ion current level is much lower than that of normally observed in propagation flames, but highly reproducible. Ions arise at the time the cool flame degenerates, and again in the blue-flame induction time T2. Breakdown of electric non-conductance during the preflame period has been investigated recently using a motored premixed-compression ignition engine. An electrode gap was installed in the combustion chamber. Between the electrodes a high static voltage of 2 200 V was given, charged in a small capacitor. It has been found that the timing of discharge or break down during the preflame period was the time in which the cool flame began to appear. Several attempts have been made to detect ionization of low-temperature flames produced by piston compression or on a flat burner, and to obtain advanced knowledge on the role the low-temperature reactions, which perform for the onset of final hot-flame ignition.

Słowa kluczowe

EN

internal combustion engine; low-temperature flame; ignition; Preflame Reaction; ionization

• 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: 2004
• Tom: Vol. 11, No. 1-2
• Strony: 157--164
• Opis fizyczny: Bibliogr. 4 poz., rys.

Twórcy

autor

Furutani M.

• Nagoya Institute of Technology Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan [phone], [phone]: Fax

autor

Sato M.

• Nagoya Institute of Technology Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan [phone], [phone]: Fax

autor

Shichi H.

• Nagoya Institute of Technology Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan [phone], [phone]: Fax

autor

Ohta Y.

• Nagoya Institute of Technology Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan [phone], [phone]: Fax

Bibliografia

• [1] Furutani M., Ohta Y. and Komatsu K., Ionization of Compression Ignition Low Temperature Flames, Progress in Astronautics and Aeronautics, 152, 403-413, (1993), AIAA.
• [2] Furutani M., Ohta Y.and Nose M., A Key to Achieve Ignition - Generation/Consumption of Carbon Monoxide in Blue-Flame Period of Compression Ignition of Hydrocarbon Fuels, Journal of Kones, Internal Combustion Engines, 8-1/2, 1-8, (2001), Committee of Kones. Poland
• [3] Ohta Y. and Takahashi H., Temperature and Pressure Effects in Cool and Blue Flames, Progress in Astronautics and Aeronautics, 88, 38-56, (1983), AIAA.
• [4] Ohta Y., Kadowaki S., Terada K. and Takahashi H., Effect of Turbulent Fluid Motion on Low Temperature Autoignition of Fuel-Air Mixture under Piston Compression, Progress in Astronautics and Aeronautics, 131, 394-406, ( 1991), AIAA.