Study on Mixture Formation and Ignition Process in Spark Ignition Engine Using Optical Combustion Sensor

1990 ◽  
Author(s):  
Yoshishige Ohyama ◽  
Minoru Ohsuga ◽  
Hiroshi Kuroiwa
Keyword(s):  
Spark Ignition ◽  
Spark Ignition Engine ◽  
Ignition 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

Study on Mixture Formation at an Experimental Spark Ignition Engine

2016 ◽  
pp. 187-194 ◽  
Author(s):  
Dan Mihai Dogariu ◽  
Anghel Chiru ◽  
Stelian Țârulescu ◽  
Marius Lazăr ◽  
Vlad Ștefan Stancu
Keyword(s):  
Spark Ignition ◽  
Spark Ignition Engine ◽  
Mixture Formation

Modeling the Mixture Formation in a Small Direct-Injected Two-Stroke Spark-Ignition Engine

1997 ◽  
Author(s):  
Felice E. Corcione ◽  
Rossella Rotondi ◽  
Roberto Gentili ◽  
Mariano Migliaccio
Keyword(s):  
Spark Ignition ◽  
Spark Ignition Engine ◽  
Mixture Formation

scholarly journals Development of a three-zone combustion model for stratified-charge spark-ignition engine

2021 ◽  
Vol 2 (5 (110)) ◽  
pp. 46-57
Author(s):  
Volodymyr Korohodskyi ◽  
Andrii Rogovyi ◽  
Oleksandr Voronkov ◽  
Andrii Polivyanchuk ◽  
Pavlo Gakal ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Combustion Products ◽  
Spark Ignition ◽  
Spark Ignition Engine ◽  
Working Fluid ◽  
Mixture Formation ◽  
Volume Balance ◽  
Air Volume ◽  
Fuel Charge ◽  
Mixture Volume

A thermodynamic model for calculating the operating process in the cylinder of a spark-ignition engine with internal mixture formation and stratified air-fuel charge based on the volume balance method was developed. The model takes into account the change in the working fluid volume during the piston movement in the cylinder. The equation of volume balance of internal mixture formation processes during direct fuel injection into the engine cylinder was compiled. The equation takes into account the adiabatic change in the volume of the stratified air-fuel charge, consisting of fuel-air mixture volume and air volume. From the heat balance equation, the change in the fuel-air mixture volume during gasoline evaporation in the fuel stream and from the surface of the fuel film due to external heat transfer was determined. Basic equations of combustion-expansion processes of the stratified air-fuel charge were derived, taking into account three zones corresponding to combustion products, fuel-air mixture and air volumes. The equation takes into account the change in the working fluid volume due to heat transfer and heat exchange between the zones and the walls of the above-piston volume. Dependences for determining the temperature in the three considered zones and pressure in the cylinder were obtained. Graphs of changes in the volumes of the combustion products, fuel-air mixture and air zones with the change of the above-piston volume in partial load modes (n=3,000 rpm) were plotted. With increasing load from bmep=0.144 MPa to bmep=0.322 MPa, at the moment of fuel ignition, the volume of the fuel-air mixture increases from 70 % to 92 % of the above-piston volume. At the same time, the air volume decreases from 30 % to 8 %. Analysis of theoretical and experimental indicator diagrams showed that discrepancies in the maximum combustion pressure do not exceed 5 %

A Numerical Simulation of Analysis of Backfiring Phenomena in a Hydrogen Fuelled Spark Ignition Engine

2015 ◽  
Author(s):  
K. A. Subramanian ◽  
B. L. Salvi
Keyword(s):  
Hot Spot ◽  
Spark Ignition ◽  
Spark Ignition Engine ◽  
Intake Manifold ◽  
Injection Timing ◽  
Ignition Process ◽  
Si Engine ◽  
Engine Operation ◽  
Study Results ◽  
Residual Gas

Hydrogen utilization in spark ignition engines could reduce urban pollution including particulate matter as well as greenhouse gas (carbon dioxide) emission. However, backfiring, which is an undesirable combustion process of intake charge in hydrogen fuelled spark ignition (SI) engine with manifold based injection, is one of the major technical issues in view of safety as well as continuous engine operation as ignition process could proceed instantaneously due to less ignition energy requirement of hydrogen. Backfiring occurs generally during suction stroke as the hydrogen-air charge interacts with residual gas resulting in flame growth and propagation towards upstream of engine’s intake manifold resulting in stalling of engine operation and high risk of safety. This work is aimed at analysis of backfiring in a hydrogen fuelled SI engine. The results indicate that backfiring is mainly function of residual gas temperature, start of hydrogen injection timing and equivalence ratio. Any hot-spot present in the cylinder would act as ignition source resulting in more chances of backfiring. In addition to this, CFD analysis was carried out in order to assess flow characteristics of hydrogen and air during suction stroke in intake manifold. Furthermore, numerical analysis of intake charge velocity, flame speed (deflagration), and flame propagation (backfiring) towards upstream of intake manifold was also carried out. Some notable points of backfiring control strategy including exhaust gas recirculation (EGR) and retarded (late) hydrogen injection timing are emerged from this study for minimizing chance of backfiring. This study results are useful for development of dedicated spark ignition engine for hydrogen fuel in the aspects of elimination of backfiring.

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