Computation of the Hollow-Cone Sprays from a High-Pressure Swirl Injector for a Gasoline Direct-Injection SI Engine

1996 ◽  
Author(s):  
Toyosei Yamauchi ◽  
Tomoyuki Wakisaka
Keyword(s):  
High Pressure ◽  
Direct Injection ◽  
Gasoline Direct Injection ◽  
Hollow Cone ◽  
Si Engine ◽  
Swirl Injector ◽  
Pressure Swirl

Performance of Prototype High Pressure Swirl Injector Nozzles for Gasoline Direct Injection

1999 ◽  
Author(s):  
Changsoo Jang ◽  
Sangmin Choi ◽  
Choongsik Bae ◽  
Jooyoung Kim ◽  
Seungkook Baik
Keyword(s):  
High Pressure ◽  
Direct Injection ◽  
Gasoline Direct Injection ◽  
Swirl Injector ◽  
Pressure Swirl

Experimental and numerical study of high-pressure-swirl injector sprays in a direct injection gasoline engine

2005 ◽  
Vol 219 (8) ◽  
pp. 617-629 ◽  
Author(s):  
J Gao ◽  
D Jiang ◽  
Z Huang ◽  
X Wang
Keyword(s):  
High Pressure ◽  
Direct Injection ◽  
Fuel Spray ◽  
Spray Characteristics ◽  
Engine Operation ◽  
Injection Condition ◽  
Partial Load ◽  
Swirl Injector ◽  
Gdi Engine ◽  
Pressure Swirl

The characteristics of free spray of a new type high-pressure-swirl injector in gasoline direct injection (GDI) engine under various injection conditions are investigated. The fuel spray with hollow-cone structure, wide spreading, and large spray angle is observed under the injection condition simulating to the GDI engine operation at full load. The study shows that a vortex structure can be clearly observed in the periphery of the spray. Meanwhile, an initial spray slug also appears at the tip of the main spray. Under the injection condition of GDI engine partial load, the structure of fuel spray changes into the more compact and solid-cone shape with decreased spray width. Moreover, the influences of the injection pressures and ambient pressures on the spray characteristics of the injector are studied. Along with the experimental studies, a general numerical model for the swirl spray is developed. Then, the model is implemented into a multi-dimensional computational fluid dynamics code (KIVA-3V) to theoretically study the pressure-swirl injector sprays. Comparisons between the computed and measured spray characteristics such as spray structure, spray tip penetration, and droplet sizes are made, and good agreement has been achieved between the model prediction and measurement.

SANDVIK PRESSURFECT

Alloy Digest ◽  
2015 ◽  
Vol 64 (1) ◽  
Keyword(s):  
High Pressure ◽  
Stainless Steel ◽  
Corrosion Resistance ◽  
Direct Injection ◽  
Heat Treating ◽  
Gasoline Direct Injection ◽  
Fuel System ◽  
Bend Strength ◽  
Low Carbon ◽  
Steel Company

Abstract Sandvik Pressurfect is an austenitic chromium-nickel stainless steel with low carbon content used for high-pressure gasoline direct injection (GDI) fuel system. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and bend strength. It also includes information on corrosion resistance as well as heat treating and machining. Filing Code: SS-1195. Producer or source: Sandvik Steel Company.

Investigation of combustion and emissions of an SI engine with ethanol port injection and gasoline direct injection under lean burn conditions

Energy ◽  
2019 ◽  
Vol 189 ◽  
pp. 116231 ◽  
Author(s):  
Xiumin Yu ◽  
Zezhou Guo ◽  
Ping Sun ◽  
Sen Wang ◽  
Anshi Li ◽  
...  
Keyword(s):  
Direct Injection ◽  
Gasoline Direct Injection ◽  
Si Engine ◽  
Lean Burn
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