327 Development of Non-eccentric Rotor IC Engine : Optical Observations of Ignition and Flame Propagation Process

2014 ◽  
Vol 2014.63 (0) ◽  
pp. _327-1_-_327-2_
Author(s):  
Yu SAKAI ◽  
Keisuke TESHIMA ◽  
Hiroyuki FUJII ◽  
Yusaku YAMAMOTO ◽  
Yu SAIKI ◽  
...  
Keyword(s):  
Flame Propagation ◽  
Optical Observations ◽  
Propagation Process ◽  
Ic Engine ◽  
Eccentric Rotor

An investigation of early flame propagation in a lean-burn SI IC engine using time-resolved OH-PLIF measurement

2020 ◽  
Vol 2020 (0) ◽  
pp. 0185
Author(s):  
Masayoshi Matsuda ◽  
Tomoki Nagashima ◽  
Takeshi Yokomori ◽  
Masayasu Shimura ◽  
Mamoru Tanahashi
Keyword(s):  
Flame Propagation ◽  
Lean Burn ◽  
Ic Engine ◽  
Time Resolved ◽  
Plif Measurement

An Experimental Investigation of Early Flame Development in an Optical SI Engine Fueled With Natural Gas

2017 ◽  
Author(s):  
Cosmin E. Dumitrescu ◽  
Vishnu Padmanaban ◽  
Jinlong Liu
Keyword(s):  
Natural Gas ◽  
Flame Propagation ◽  
Turbulent Flame ◽  
The United States ◽  
Si Engine ◽  
Ic Engine ◽  
Piston Bowl ◽  
Pressure Trace ◽  
Flame Development ◽  
Flame Region

Improved internal combustion (IC) engine simulations of natural gas (NG) combustion under conventional and advanced combustion strategies have the potential to increase the use of NG in the transportation sector in the United States. This study focused on the physics of turbulent flame propagation. The experiments were performed in a single-cylinder heavy-duty compression-ignition (CI) optical engine with a bowl-in piston that was converted to spark ignition (SI) NG operation. The size and growth rate of the early flame from the start of combustion until the flame filled the camera field-of-view were correlated to combustion parameters determined from in-cylinder pressure data, under low-speed, lean-mixture, and medium-load conditions. Individual cycles showed evidence of turbulent flame wrinkling, but the cycle-averaged flame edge propagated almost circular in the 2D images recorded from below. More, the flame-speed data suggested a different flame propagation inside a bowl-in piston geometry compared to a typical SI engine chamber. For example, while the flame front propagated very fast inside the piston bowl, the corresponding mass fraction burn was small, which suggested a thick flame region. In addition, combustion images showed flame activity after the end of combustion inferred from the pressure trace. All these findings support the need for further investigations of flame propagation under conditions representative of CI engine geometries, such as those in this study.

614 Investigation of Flame Propagation Process by Multi-Ignition System at Lean Combustible Mixtures in a Closed Bomb

2001 ◽  
Vol 2001.38 (0) ◽  
pp. 193-194
Author(s):  
Makoto YAMAUCHI ◽  
Tadashige KAWAKAMI ◽  
Satoshi OKAJIMA ◽  
VAN Thi BONG
Keyword(s):  
Flame Propagation ◽  
Propagation Process ◽  
Ignition System ◽  
Combustible Mixtures
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