Numerical investigation of the effect of nozzle hole diameter on the combustion, emission, and spray characteristics in a diesel engine

2021 ◽  
pp. 1-18
Author(s):  
Vaibhav Singh ◽  
Naveen Kumar
Keyword(s):  
Diesel Engine ◽  
Numerical Investigation ◽  
Hole Diameter ◽  
Spray Characteristics ◽  
Nozzle Hole ◽  
Combustion Emission

G0700504 Effect of nozzle hole diameter on diesel spray characteristics

2015 ◽  
Vol 2015 (0) ◽  
pp. _G0700504--_G0700504-
Author(s):  
Yuki MORIMOTO ◽  
Hironobu UEKI ◽  
Noritsune KAWAHARADA ◽  
Daisaku SAKAGUCHI
Keyword(s):  
Hole Diameter ◽  
Diesel Spray ◽  
Spray Characteristics ◽  
Nozzle Hole

Numerical Simulation on Effect of Nozzle-Hole Layout on Spray Characteristics and Combustion in a DI Diesel Engine

2012 ◽  
Vol 476-478 ◽  
pp. 448-452
Author(s):  
Jun Zhang ◽  
Chang Pu Zhao ◽  
Nai Zhuan Chen ◽  
Da Lu Dong ◽  
Bo Zhong
Keyword(s):  
Numerical Simulation ◽  
Diesel Engine ◽  
Direct Injection ◽  
Combustion Process ◽  
Three Dimensional ◽  
Three Dimensional Model ◽  
Spray Characteristics ◽  
Fuel Atomization ◽  
Di Diesel Engine ◽  
Nozzle Hole

Diesel spray characteristics are closely related to the combustion of the engine where the spray tip penetration and the fuel atomization play a key role especially for direct injection (DI) diesel engine. With different nozzles, the fuel atomization and evaporation will be different thereby affecting the combustion and emission characteristics. A three-dimensional model is built based on the parameters of a DI diesel engine, and its validation is also validated. Three nozzle-hole layouts are designed in this research, including the conventional hole, multi-hole, and group-hole. The spray characteristics and combustion process are studied with three different nozzle-hole layouts by the way of numerical simulation. Further more, the effect of inter-hole spacing of group-hole nozzle on the evaporation rate and combustion process is researched here.

scholarly journals Effect of Fuel Injector Nozzle Hole Diameter on Emissions of CAT 3401 Diesel Engine Using CONVERGETM CFD

2019 ◽  
Vol 8 (6) ◽  
pp. 927-932
Keyword(s):  
Diesel Engine ◽  
Cone Angle ◽  
Hole Diameter ◽  
Droplet Radius ◽  
Combustion Model ◽  
Fuel Injector ◽  
Gas Temperature ◽  
Spray Cone ◽  
Injector Nozzle ◽  
Nozzle Hole

Variation of fuel injector nozzle hole is on engine emission and performance is evaluated in present article. Simulation is carried out on caterpillar 3401 diesel engine is using CONVERGE CFD code. A 60° sector model with SAGE combustion model was considered to examine the four different nozzle hole diameters (0.230mm, 0.240mm, 0.250mm, 0.259mm and 0.270mm) and their effect on the engine performance, emissions and spray characteristics. The combustion results showed that nozzle hole diameter of 0.230mm contributed for maximum in-cylinder pressure and temperature due to enhancement in spray cone angle, atomization, and efficient air-fuel mixture. HC, CO, and soot Emissions were found to be decreased with the decrease in nozzle hole diameter, however, due to enhanced atomization and the overall increase in cylinder gas temperature, the NOx emissions were observed to increase for nozzle holes with smaller diameters. Droplet radius for 0.250mm, 0.259mm and 270 mm is found to be larger to the formation of lower jet velocities. Thus nozzle holes with smaller diameter tend to reduce the emissions with a penalty in NOx emission.

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