scholarly journals Comparision on dynamic behavior of diesel spray and rapeseed oil spray in diesel engine

2017 ◽  
Vol 822 ◽  
pp. 012058
Author(s):  
Azwan Sapit ◽  
Mohd Azahari Razali ◽  
Mohd Faisal Hushim ◽  
Norrizam Jaat ◽  
Akmal Nizam Mohammad ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Dynamic Behavior ◽  
Rapeseed Oil ◽  
Diesel Spray

scholarly journals Study on Spray Characteristics and Spray Droplets Dynamic Behavior of Diesel Engine Fueled by Rapeseed Oil

2014 ◽  
Vol 13 ◽  
pp. 02005
Author(s):  
Azwan Sapit ◽  
Mohd. Azahari Razali ◽  
Mohd Faisal Hushim ◽  
Mas Fawzi Mohd Ali ◽  
Amir Khalid ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Dynamic Behavior ◽  
Rapeseed Oil ◽  
Spray Characteristics ◽  
Spray Droplets

scholarly journals Dynamic Behavior of Rapeseed Oil Spray in Diesel Engine

2015 ◽  
Vol 773-774 ◽  
pp. 520-524
Author(s):  
Azwan Sapit ◽  
Mohd Azahari Razali ◽  
Mohd Faisal Hushim ◽  
M. Jaat ◽  
Akmal Nizam Mohammad ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Dynamic Behavior ◽  
Rapeseed Oil ◽  
High Viscosity ◽  
Image Processing Algorithm ◽  
Spray Droplet ◽  
Droplet Behavior ◽  
Air Mixing ◽  
Atomization Characteristics ◽  
Entrainment Effect

Fuel-air mixing is important process in diesel combustion which significantly affects the combustion and emission of diesel engine. Due to the nature of biomass fuel that has high viscosity and high distillation temperature, the condition and furthermore the improvement of atomization process is very important. This study investigates the atomization characteristics and droplet dynamic behaviors of diesel engine spray fueled by rapeseed oil (RO). Optical observation of RO spray was carried out using shadowgraph photography technique. Single nanospark photography technique was used to study the characteristics of the rapeseed oil spray while dual nanospark shadowgraph technique was used to study the spray droplet behavior. Using in-house image processing algorithm, the images were processed and the boundary condition of RO spray also was studied. The results show that RO has very poor atomization due to the high viscosity nature of the fuel. This is in agreement with the results from spray droplet dynamic behavior studies that shows due to the high viscosity, the droplets are large in size and travel downward, with very little influence of entrainment effect due to its large kinematic energy.

Model Verification of the Evaporating Diesel Spray Distribution in the Combustion Chamber of a D.I. Diesel Engine

1996 ◽  
Author(s):  
Takuo Yoshizaki ◽  
Keiichiro Yuzaki ◽  
Hiroyuki Hiroyasu ◽  
Hideo Yamashita ◽  
Kazufumi Kaneda ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Combustion Chamber ◽  
Model Verification ◽  
Diesel Spray ◽  
Spray Distribution

Characteristics of injection of diesel fuel, rapeseed oil and their mixtures in diesel engines of various types

2021 ◽  
pp. 167-178
Author(s):  
Keyword(s):  
Diesel Engine ◽  
Diesel Fuel ◽  
Diesel Engines ◽  
Rapeseed Oil ◽  
High Speed ◽  
Fuel Injection ◽  
Experimental Studies ◽  
Fuel Injector ◽  
High Speed Diesel ◽  
Engine Type

The necessity of adapting diesel engines to work on vegetable oils is justified. The possibility of using rapeseed oil and its mixtures with petroleum diesel fuel as motor fuels is considered. Experimental studies of fuel injection of small high-speed diesel engine type MD-6 (1 Ch 8,0/7,5)when using diesel oil and rapeseed oil and computational studies of auto-tractor diesel engine type D-245.12 (1 ChN 11/12,5), working on blends of petroleum diesel fuel and rapeseed oil. When switching autotractor diesel engine from diesel fuel to rapeseed oil in the full-fuel mode, the mass cycle fuel supply increased by 12 %, and in the small-size high-speed diesel engine – by about 27 %. From the point of view of the flow of the working process of these diesel engines, changes in other parameters of the fuel injection process are less significant. Keywords diesel engine; petroleum diesel fuel; vegetable oil; rapeseed oil; high pressure fuel pump; fuel injector; sprayer

scholarly journals Matching simulated and measured eigen frequencies of medium speed diesel engine

2017 ◽  
Vol 50 (3) ◽  
pp. 206-210 ◽  
Author(s):  
Diana Burdiel ◽  
Carlo Pestelli ◽  
Moreno Almerigogna ◽  
Alan Pettirosso ◽  
Heikki Mikonaho ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Dynamic Behavior ◽  
Engine Design ◽  
Medium Speed ◽  
Eigen Frequencies

The aim of this article is to present a method to predict the dynamic behavior of a new engine design on the basis of a correlation between simulations and measurements of a similar engine.

scholarly journals Investigation of the Performances of a Diesel Engine Operating on Blended and Emulsified Biofuels from Rapeseed Oil

Energies ◽  
2021 ◽  
Vol 14 (20) ◽  
pp. 6661
Author(s):  
Vladimir Anatolyevich Markov ◽  
Bowen Sa ◽  
Sergey Nikolaevich Devyanin ◽  
Anatoly Anatolyevich Zherdev ◽  
Pablo Ramon Vallejo Maldonado ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Rapeseed Oil ◽  
Characteristic Curve ◽  
Motor Fuel ◽  
Experimental Tests ◽  
Operating Conditions ◽  
Test Results ◽  
Cfd Simulations ◽  
Brake Thermal Efficiency ◽  
Flow Simulations

The article discusses the possibility of using blended biofuels from rapeseed oil (RO) as fuel for a diesel engine. RO blended diesel fuel (DF) and emulsified multicomponent biofuels have been investigated. Fuel physicochemical properties have been analyzed. Experimental tests of a diesel engine D-245 in the operating conditions of the external characteristic curve and the 13-mode test cycle have been conducted to investigate the effect of these fuels on engine performances. CFD simulations of the nozzle inner flow were performed for DF and ethanol-emulsified RO. The possibility of a significant improvement in brake thermal efficiency of the engine has been noted. The efficiency of using blended biofuels from RO as a motor fuel for diesel engines has been evaluated based on the experimental test results. It was shown that in comparison with the presence of RO in emulsified multicomponent biofuel, the presence of water has a more significant effect on NOx emission reduction. The content of RO and the content of water in the investigated emulsified fuels have a comparable influence on exhaust smoke reduction. Nozzle inner flow simulations show that the emulsification of RO changes its flow behaviors and cavitation regime.

Optimization of mixed biofuel composition for diesel engine

2021 ◽  
Keyword(s):  
Diesel Engine ◽  
Methyl Ester ◽  
Diesel Fuel ◽  
Rapeseed Oil ◽  
Alternative Fuels ◽  
Operating Mode ◽  
Promising Alternative ◽  
Motor Fuels ◽  
Engine Combustion ◽  
Basic Characteristics

Biofuels derived from vegetable oils are known to be promising alternative fuels for diesel engines. The possibility of using mixtures of petroleum diesel fuel with rapeseed oil and rapeseed oil methyl ester as environmentally friendly motor fuels is considered. The practicability of changing the composition of these mixtures in accordance with the engine operating mode is shown. A technique for multicriteria optimization of the composition of such mixed biofuels is suggested. The basic characteristics of the optimal composition of these mixed biofuels are calculated. A device for regulating fuel’s composition is proposed. The basic characteristic of regulation of the blended biofuel composition realized by the device is presented. Keywords diesel engine; combustion chamber; oil diesel fuel; rapeseed oil; rapeseed oil methyl ester; biofuel mixture; ecological characteristics; exhaust gases toxicity

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