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http://dx.doi.org/10.9726/kspse.2018.22.1.056

A Basic Study on Combustion Characteristics of Radical Ignition Sub-chamber Type CNG DI Engine  

Chung, Sung-Sik (Department of Mechanical Engineering, DongA University)
Hwang, Seong-Ill (KIA Motor's Pusan Service Center)
Lim, Choon-Mee (Graduate School, DongA University)
Publication Information
Journal of Power System Engineering / v.22, no.1, 2018 , pp. 56-63 More about this Journal
Abstract
After the recent fabrication of diesel vehicle exhaust gas by Volkswagen, nitrogen oxides ($NO_x$) and particulate matter (PM) are drawing attention as representative pollutants included in exhaust gas. When gasoline and diesel fuels are combusted through direct injection into a combustion chamber at high pressure, PM emission is actually increased. To find a solution to this problem, a basic study was conducted to derive an optimized variable for combustion of compressed natural gas (CNG) by applying CNG, acknowledged as a clean fuel, to direct injection system. The essence of this study is in the introduction of a radical ignition technology for compressed natural gas (RI-CNG) in a sub-chamber type engine. The direct injection system was applied to a sub-chamber to remove residual gas from previous combustion cycle. In addition, optimal mixer distribution was achieved by precisely setting ignition timing based on fuel injection timing and excess air ratio.
Keywords
RI-CNG Engine; Constant Volume Combustor; Sub-Chamber; Residual Gas; Direct Injection;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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