Assessment of the New Features of a Prototype High-Pressure “Hollow Cone Spray” Diesel Injector by Means of Engine Performance Characterization and Spray Visualization

2018 ◽  
Author(s):  
Luigi Sequino ◽  
Giacomo Belgiorno ◽  
Gabriele Di Blasio ◽  
Ezio Mancaruso ◽  
Carlo Beatrice ◽  
...  
Keyword(s):  
High Pressure ◽  
Engine Performance ◽  
Hollow Cone ◽  
Performance Characterization ◽  
Spray Visualization ◽  
Hollow Cone Spray

Analysis of a Prototype High-Pressure “Hollow Cone Spray” Diesel Injector Performance in Optical and Metal Research Engines

2017 ◽  
Author(s):  
Carlo Beatrice ◽  
Giacomo Belgiorno ◽  
Gabriele Di Blasio ◽  
Ezio Mancaruso ◽  
Luigi Sequino ◽  
...  
Keyword(s):  
High Pressure ◽  
Hollow Cone ◽  
Metal Research ◽  
Hollow Cone Spray

Experimental and numerical analysis of a high-pressure outwardly opening hollow cone spray injector for automotive engines

Fuel ◽  
2017 ◽  
Vol 196 ◽  
pp. 508-519 ◽  
Author(s):  
Marianna Migliaccio ◽  
Alessandro Montanaro ◽  
Carlo Beatrice ◽  
Pierpaolo Napolitano ◽  
Luigi Allocca ◽  
...  
Keyword(s):  
High Pressure ◽  
Numerical Analysis ◽  
Hollow Cone ◽  
Automotive Engines ◽  
Hollow Cone Spray

Experimental and Numerical Analysis of a High-Pressure Outwardly Opening Hollow Cone Spray Injector for Automotive Engines

2017 ◽  
Author(s):  
Carlo Beatrice ◽  
Marianna Migliaccio ◽  
Alessandro Montanaro ◽  
Valentina Fraioli ◽  
Pierpaolo Napolitano ◽  
...  
Keyword(s):  
High Pressure ◽  
Numerical Analysis ◽  
Hollow Cone ◽  
Automotive Engines ◽  
Hollow Cone Spray

Characteristics of Leeward Shear Layer Structure of Hollow-Cone Spray in Gaseous Crossflow

AIAA Journal ◽  
2021 ◽  
Vol 59 (1) ◽  
pp. 405-409
Author(s):  
Haibin Zhang ◽  
Shilin Gao ◽  
Bofeng Bai ◽  
Yechun Wang
Keyword(s):  
Shear Layer ◽  
Layer Structure ◽  
Hollow Cone ◽  
Hollow Cone Spray

scholarly journals Analisis Pengaruh High Pressure Compressor Rotor Clearance Terhadap Exhaus Gas Temperature Margin pada CFM56-7

2021 ◽  
Vol 6 (2) ◽  
pp. 50-55
Author(s):  
Wildan Sofary Darga ◽  
Edy K. Alimin ◽  
Endah Yuniarti
Keyword(s):  
High Pressure ◽  
Engine Performance ◽  
Exhaust Gas ◽  
Gas Temperature ◽  
Compressor Rotor ◽  
High Pressure Compressor ◽  
The Difference ◽  
Gas Turbine Exhaust ◽  
Temperature Margin ◽  
Pressure Compressor

Exhaust Gas Temperatue is an parameter where the hot gases’s temperature leave the gas turbine. Exhaust gas temperature margin is the difference between highest temperature at take off phase with redline on indicator (???????????? ???????????????????????? °????=???????????? ????????????????????????????−???????????? ???????????????? ????????????). EGTM is one of any factor to determine engine performance. A good perfomance of an engine when it has a big margin (EGTM), during operation of an engine the EGTM could decrease untill 0 (zero). So many factors could affect EGTM deteroration there are: distress hardware such as airfoil erosion, leak of an airseals, and increase of clearance between tip balde and shroud. Increase of clearance happens in high pressure compressor rotor clearance. In CFM56-7 have 9 stage(s) of high pressure compressor and each stage give the EGT Loses. The calculation of EGT Effect/Losses is actual celarance – minimum clearance x 1000 x EGT Effect °C, where actual clearance define by the substraction of outside diameter’s rotor with inside diameter’s shroud, minimum clearance define in the manual, 1000 is adjustment from mils/microinch to inch, and EGT Effect is temperature that define in the manual. The analysist had done with 6 (six) engine serial number and proceed by corelation that shown linkage between clearance and EGT Effect, the corelation is strong shown the result of corelation (r) is 0.994275999 or nearest 1.

scholarly journals Spray Drop Size and Velocity Measurements in a Swirl-Stabilized Combustor

1991 ◽  
Author(s):  
B. Chehroudi ◽  
M. Ghaffarpour
Keyword(s):  
Drop Size ◽  
Cone Angle ◽  
Hollow Cone ◽  
Flow Rates ◽  
Fuel Droplets ◽  
Radial Profiles ◽  
Fuel Nozzle ◽  
Pass Through ◽  
Yellow Region ◽  
Hollow Cone Spray

A pressure-swirl fuel nozzle generating a hollow-cone spray with nominal cone angle of 30 degrees is used in a swirl-stabilized combustor. The combustor is circular in cross section with swirl plate and fuel nozzle axes aligned and coinciding with the axis of the chamber. Kerosene is injected upward inside the chamber from the fuel nozzle. Separate swirl and dilution air flows are uniformly distributed into the chamber that pass through the honey comb flow straighteners and screens. Calculated swirl number of 1.5 is generated with the design swirl plate exit air velocity of 30 degrees with respect to the chamber axis. Effects of swirl and dilution air flow rates on the shape and stability of the flame are investigated. Stable and classical liquid fuel sheet disintegration zone exists close to the nozzle with no visible light followed by a luminous blue region and a mixed blue/yellow region that subsequently turns into yellow for most of the part in the flame. A Phase Doppler Particle Analyzer (PDPA) is used to measure drop size, mean and rms axial velocity for two cases of with and without combustion at six different axial locations from the nozzle. For the no-combustion case all air and fuel flow rates were kept at the same values as the combusting spray condition. Results for mean axial drop velocity profiles indicate widening of the spray due to combustion while the magnitudes of the peak velocities are slightly increased. No measurements inside the hollow-cone spray are possible due to burning of fuel droplets. Drop turbulence decreases due to combination of increase in gas kinematic viscosity and elimination of small drops at high temperatures. Sauter Mean Diameter (SMD) radial profiles at all axial locations increase with combustion due to preferential burning of small drops.

Validation of a CFD Model of a Hollow-Cone Spray with Gasoline Fuel Blends

2011 ◽  
Author(s):  
Lars Schmidt ◽  
Jason King ◽  
John Stokes ◽  
James Mullineux ◽  
Calvin R.Ramasamy ◽  
...  
Keyword(s):  
Cfd Model ◽  
Hollow Cone ◽  
Fuel Blends ◽  
Hollow Cone Spray
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