Evaluation of the Ignition Effect in Constant Volume Combustion Chamber Based on Matching Effect of High Voltage (MEHV) Method

Kwonse Kim, Jaeyoung Han and Seokyeon Im
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Kwonse Kim: Department of Automotive Engineering, Korea International University in Ferghana, Ferghana City 150100, Uzbekistan
Jaeyoung Han: School of Automotive & Mechanical Design Engineering, Youngsan University, Yangsan 50510, Korea
Seokyeon Im: Department of Mechanical and Materials Engineering Education, Chungnam National University, 99 Daehak-ro, Daejeon 34134, Korea

Energies, 2020, vol. 13, issue 19, 1-15

Abstract: The characteristics of spark ignition with a constant volume combustion chamber (CVCC) is evaluated for the efficiency of capacitive-assisted ignition (CAI), such as spark kernel and flame growth. The conventional spark method and matching effect of high voltage (MEHV) method are evaluated to compare the spark growth distribution characteristics. To do this study, a plasma system is used and is consisted of input power, three capacitors, a transformer, high voltage cable, J-type of a spark plug, diode, and CVCC. The experiment is conducted under various operating conditions, such as 1 bar, 295 K of initial temperature, 50, 100, 150 V of ignition box, 400 V of MEHV, 0.7 ms of spark duration, and 0 k? of plug resistor. The results show that the spark growth at the initial voltages of 100 V and 150 V has the same characteristic, and the surface area is increased by 13 mm 2 at 150 V compared to 100 V because capacitance energy stored in three capacitors is efficiently induced by the effect of dielectric breakdown and electron collision. Consequently, the spark growth of MEVH is widely distributed atmospheric more than the conventional spark, and the internal temperature of the spark kernel could be presumed to change the non-thermal plasma to thermal plasma by MEHV.

Keywords: capacitive-assisted ignition (CAI); spark kernel; constant volume combustion chamber (CVCC); high energy; spark ignition system; plasma ignition; matching effect of high voltage (MEHV); breakdown voltage; electron collision (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
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