EFFECTS OF SPRAY PATTERNS ON THE MIXTURE FORMATION PROCESS IN MULTI-HOLE-TYPE DIRECT INJECTION SPARK IGNITION (DISI) GASOLINE ENGINES

2016 ◽  
Vol 26 (11) ◽  
pp. 1151-1175 ◽  
Author(s):  
Taehoon Kim ◽  
Sungwook Park
Keyword(s):  
Formation Process ◽  
Direct Injection ◽  
Spark Ignition ◽  
Mixture Formation ◽  
Gasoline Engines ◽  
Direct Injection Spark Ignition

Microscopic spray characteristics of ethanol and methanol blended gasoline in a direct injection spark ignition engine

2021 ◽  
pp. 146808742098776
Author(s):  
Nikhil Sharma ◽  
Avinash Kumar Agarwal
Keyword(s):  
Droplet Size ◽  
Fuel Injection ◽  
Direct Injection ◽  
Spark Ignition ◽  
Spray Atomization ◽  
Automotive Applications ◽  
Mixture Formation ◽  
Spray Characteristics ◽  
Spray Droplet ◽  
Direct Injection Spark Ignition

Renewable fuels are continuously being refined/ upgraded for automotive applications to reduce dependence on conventional fossil fuels. However, optimized use of these renewable fuels in existing and new engines/ vehicles requires comprehensive characterization and understanding of spray atomization and fuel-air mixture formation processes. Spray atomization and mixture formation depends on fuel injection pressure (FIP), fuel injection quantity and ambient conditions. This study is aimed at exploring microscopic spray characteristics of ethanol and methanol blended gasoline for automotive applications, particularly in direct injection Spark Ignition (DISI) engines. Phase Doppler interferometer (PDI) technique was used for comparative microscopic spray characterization in a constant volume spray chamber (CVSC) at ambient pressure condition, to evaluated spray droplet size-velocity distributions and joint probability density function (JPDF) of different test fuels. In this study, two gasohol mixtures [15% v/v ethanol and methanol blended with 85% v/v gasoline] and baseline gasoline were experimentally evaluated for comparing spray droplet size-velocity distributions at two different FIPs of 80 and 160 bars, at two different fuel injection quantities of 12 and 28 mg/injection, which are typical representative conditions for a DISI engines. The results from this experimental investigation are valuable for automotive and fuel industries, and spray community, which are continuously upgrading renewable and oxygenated fuels and engine technologies for efficiency improvement and emission reduction.

Analysis of the Impact of 2-Methylfuran on Mixture Formation and Combustion in a Direct-Injection Spark-Ignition Engine

2011 ◽  
Vol 25 (12) ◽  
pp. 5549-5561 ◽  
Author(s):  
Matthias Thewes ◽  
Martin Muether ◽  
Stefan Pischinger ◽  
Matthias Budde ◽  
André Brunn ◽  
...  
Keyword(s):  
Direct Injection ◽  
Spark Ignition ◽  
Spark Ignition Engine ◽  
Mixture Formation ◽  
Direct Injection Spark Ignition ◽  
The Impact
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