Three-Dimensional Numerical Analysis of Mixture Formation Process in the Cylinder of a Spark-Ignition Engine.

1993 ◽  
Vol 59 (559) ◽  
pp. 960-965
Author(s):  
Mitsuhiro Tsue ◽  
Yoshiya Yamashita ◽  
Hiroshi Yamasaki ◽  
Toshikazu Kadota
Keyword(s):  
Numerical Analysis ◽  
Formation Process ◽  
Three Dimensional ◽  
Spark Ignition ◽  
Spark Ignition Engine ◽  
Mixture Formation

Numerical Analysis of Mixture Formation Process in a Swirl-Type Injector

2000 ◽  
Vol 2000.4 (0) ◽  
pp. 315-316
Author(s):  
Yasuo MORIYOSHI ◽  
Masahide TAKAGI ◽  
Xiao HU
Keyword(s):  
Numerical Analysis ◽  
Formation Process ◽  
Mixture Formation

Characterization of Mixture Formation in a Direct Injected Spark Ignition Engine

2001 ◽  
Author(s):  
Katharina Schänzlin ◽  
Thomas Koch ◽  
Alexios P. Tzannis ◽  
Konstantinos Boulouchos
Keyword(s):  
Spark Ignition ◽  
Spark Ignition Engine ◽  
Mixture Formation

Numerical analysis of the influence of early fuel injection on charge motion in a direct injection spark ignition engine using scale-resolving simulations

2019 ◽  
Vol 21 (4) ◽  
pp. 664-682
Author(s):  
Martin Theile ◽  
Martin Reißig ◽  
Egon Hassel ◽  
Dominique Thévenin ◽  
Martin Hofer ◽  
...  
Keyword(s):  
Numerical Analysis ◽  
Flow Field ◽  
Fuel Injection ◽  
Direct Injection ◽  
Spark Ignition ◽  
Spark Ignition Engine ◽  
Post Processing ◽  
Charge Motion ◽  
Set Up ◽  
Direct Injection Spark Ignition

This work summarizes the numerical analysis of the effect of early fuel injection on the charge motion in a direct injection spark ignition engine concerning cyclic fluctuations of the flow field. The combination of the scale-resolving turbulence model “Scale Adaptive Simulation” and post-processing routines for vortex trajectory visualization allows for a detailed insight into the temporal resolved and cycle-dependent behavior of the charge motion. In the first part, a simplified engine set-up is presented and used as a validation case to ensure correct behavior of the turbulence model and post-processing routines. In the second part, the computational fluid dynamics model of the real engine is introduced. The application of the proposed vortex tracking algorithm is shown, and a short discussion about the transient behavior of the charge motion in this engine set-up is given. The third part describes the analysis of the influence of the fuel injection on the charge motion at different engine speeds from 1000 to 3000 r/min and variations of the intake pressure from 1 to 2 bar. Finally, the impact on different flow field properties at possible ignition timings is discussed. Changes in mean flow field quantities as well as in aerodynamic fluctuations are found as a consequence of fuel injection.

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