The Influence of Fluid Motion on Flame Kernel Development and Cyclic Variation in a Spark Ignition Engine

1989 ◽  
Author(s):  
Matthew J. Hall
Keyword(s):  
Fluid Motion ◽  
Spark Ignition ◽  
Spark Ignition Engine ◽  
Cyclic Variation ◽  
Kernel Development ◽  
Flame Kernel

A Coupled Experimental-Theoretical Model of Flame Kernel Development in a Spark Ignition Engine

1993 ◽  
Author(s):  
D. Yossefi ◽  
M. R. Belmont ◽  
R. Thurley ◽  
J. C. Thomas ◽  
J. Hacohen
Keyword(s):  
Theoretical Model ◽  
Spark Ignition ◽  
Spark Ignition Engine ◽  
Kernel Development ◽  
Flame Kernel

Investigation of Cyclic Variation of IMEP Under Lean Burn Operation in Spark-Ignition Engine

1997 ◽  
Author(s):  
Kiyoshi Ishii ◽  
Takashi Sasaki ◽  
Yasuhiro Urata ◽  
Kazuo Yoshida ◽  
Toshihisa Ohno
Keyword(s):  
Spark Ignition ◽  
Spark Ignition Engine ◽  
Cyclic Variation ◽  
Lean Burn

Tumbling flow analysis in a four-valve spark ignition engine using particle image velocimetry

2002 ◽  
Vol 3 (3) ◽  
pp. 139-155 ◽  
Author(s):  
Y Li ◽  
H Zhao ◽  
Z Peng ◽  
N Ladommatos
Keyword(s):  
Particle Image Velocimetry ◽  
Velocity Fluctuation ◽  
Cylinder Head ◽  
Particle Image ◽  
Spark Ignition ◽  
Spark Ignition Engine ◽  
Cyclic Variation ◽  
Compression Stroke ◽  
Image Velocimetry ◽  
Exhaust Valves

Tumble motion in the cylinder of a four-valve spark ignition (SI) engine with a production-type cylinder head was studied using cross-correlation digital particle image velocimetry (PIV). The in-cylinder flow field was measured on three planes: the vertical symmetric plane of the combustion chamber, the vertical plane through centres of the intake and exhaust valves, and a horizontal plane 12 mm below the cylinder head. Ensemble-averaged mean velocity, velocity fluctuation distribution and cyclic variation of the instantaneous velocity field were analysed. Analysis results show that the tumble vortex is formed in the early stage of the compression stroke and distorted in the late stage of the compression stroke. The tumble centre is nearly in the centre of the cylinder when the tumble forms. Then it moves gradually to the underneath of the exhaust valves as the piston moves up. It is found that the cyclic variation of the tumble motion at a tumble ratio of 0.9 is so great that the ensemble-averaged flow characteristics hardly represent any individual cycle flow behaviours. Distribution of the velocity fluctuation field is inhomogeneous during the whole compression process. As the engine speed changes the large-scale flow structure seems to remain unaffected.

In-Cylinder Fluid Motion and Mixing of a Dual Intake Valve Spark Ignition Engine

1996 ◽  
Author(s):  
Chinda Charoenphonphanich ◽  
Makoto Otaka ◽  
Hisayuki Ennoji ◽  
Toshio Iijima ◽  
Mihoko Hukumoto
Keyword(s):  
Fluid Motion ◽  
Spark Ignition ◽  
Spark Ignition Engine ◽  
Intake Valve
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