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The Characteristics of Backfire for a Free-Piston Hydrogen Fueled Engine with Reverse Uni-flow Scavenging  

Byun, Chang-Hee (Grad. School of Sungkyunkwan Univ.)
Choi, Kwan-Yeon (Grad. School of Sungkyunkwan Univ.)
Back, Dae-Ha (Grad. School of Sungkyunkwan Univ.)
Lee, Jong-Tae (School of Mechanical Engineering, Sungkyunkwan Univ.)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.21, no.2, 2010 , pp. 98-103 More about this Journal
Abstract
In order to develop two-stroke free-piston hydrogen engine to obtain high thermal efficiency and low emission, backfire occurrence have to be prevented. In this research, backfire characteristics are analyzed as functions of the intake valve opening timing and compression chamber pressure under piston by using RICEM (Rapid Intake Compression Expansion Machine) that has reverse uni-flow scavenging. As the result, reverse uni-flow scavenging is advantage about back fire. but, it exists suitable intake valve opening timing and its timing become known that equivalence ratio 1 retard until the piston rises. Also, To rise chamber pressure of lower piston, this does not cause backfire occurs in equivalent ratio 0.6 observed back fire. Therefore, 2cycle hydrogen fueled free-piston engine is undesirable scavenging compression by compressing the piston.
Keywords
Free-piston engine; Hydrogen engine; Reverse uni-flow; Backfire; Suitable intake valve opening timing;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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