scholarly journals Trilateral correlation of spray characteristics, combustion parameters, and deposit formation in the injector hole of a diesel engine running on preheated Jatropha oil and fossil diesel fuel

2019 ◽  
Vol 6 (1) ◽  
pp. 909-919 ◽  
Author(s):  
Anh Tuan Hoang ◽  
Anh Tuan Le
Keyword(s):  
Diesel Engine ◽  
Diesel Fuel ◽  
Jatropha Oil ◽  
Deposit Formation ◽  
Spray Characteristics

Investigations on Low Heat Rejection Diesel Engine With Crude Jatropha Oil as an Alternate Fuel

2002 ◽  
Author(s):  
M. V. S. Murali Krishna ◽  
C. M. Vara Prasad ◽  
Tandur Rajashekar ◽  
Supriya Tiwari ◽  
T. Sujani
Keyword(s):  
Diesel Engine ◽  
Diesel Fuel ◽  
Injection Pressure ◽  
High Viscosity ◽  
Injection Timing ◽  
Jatropha Oil ◽  
Heat Rejection ◽  
Reduction Of Nox ◽  
Conventional Diesel Fuel ◽  
Diesel Operation

Jatropha oil, a non-edible vegetable oil shows a greater potential for replacing conventional diesel fuel quite effectively, as its properties are compatible to that of diesel fuel. But low volatility and high viscosity of jatropha oil call for hot combustion chamber, which is provided by a low heat rejection diesel engine with threaded air gap piston and liner with superni-90 inserts. The performance of the engine with jatropha oil is obtained with different versions of the engine such as conventional engine and insulated engine at normal and preheat condition of the oil, with varying injection pressure and timing and compared to the engine with pure diesel operation at recommended injection pressure and timing. Increase of thermal efficiency of 18% and reduction of NOx levels by 5% are observed at optimized injection timing and at higher injection pressure with insulated engine at preheat condition of jatropha oil in comparison with pure diesel operation on conventional engine.

Experimental Investigation of Electrostatic Dispersion and Combustion of Diesel Fuel Jets

1988 ◽  
Vol 110 (3) ◽  
pp. 361-368 ◽  
Author(s):  
C. P. Bankston ◽  
L. H. Back ◽  
E. Y. Kwack ◽  
A. J. Kelly
Keyword(s):  
Diesel Engine ◽  
Diesel Fuel ◽  
Fuel Injection ◽  
Fluid Model ◽  
Operating Conditions ◽  
Injection Technique ◽  
Spray Characteristics ◽  
Model Calculations ◽  
Flow Rates ◽  
Charge Densities

An experimental study of electrostatically atomized and dispersed diesel fuel jets has been conducted. A new electrostatic injection technique has been utilized to generate continuous, stable fuel sprays at charge densities of 1.5–2.0 C/m3 of fluid. Model calculations show that such charge densities may enhance spray dispersion under diesel engine conditions. Fuel jets were injected into room temperature air at one atmosphere at flow rates of 0.25–1.0 cm3/s and delivery pressures of 100–400 kPa. Measured mean drop diameters were near 150 μm with 30 percent of the droplets being less than 100 μm in diameter at typical operating conditions. The electrical power required to generate these sprays was less than 10−6 times the chemical energy available from the fuel. The spray characteristics of an actual diesel engine injector were also studied. The results show considerable differences in spray characteristics between the diesel injector and electrostatic injection. Finally, ignition and stable combustion of electrostatically dispersed diesel fuel jets was achieved. The results show that electrostatic fuel injection can be achieved at practical flow rates, and that the characteristics of the jet breakup and dispersion have potential application to combustion systems.

G071043 Characteristics of Deposit Formation on Cylinder head of Diesel Engine using Diesel Fuel with Fatty Acid

2013 ◽  
Vol 2013 (0) ◽  
pp. _G071043-1-_G071043-5
Author(s):  
Takahiro KISHI ◽  
Yoshio ZAMA ◽  
Tomohiko FURUHATA ◽  
Masataka ARAI
Keyword(s):  
Fatty Acid ◽  
Diesel Engine ◽  
Diesel Fuel ◽  
Cylinder Head ◽  
Deposit Formation

Combustion and emission characteristics of a 2.2L common-rail diesel engine fueled with jatropha oil, soybean oil, and diesel fuel at various EGR-rates

Fuel ◽  
2018 ◽  
Vol 228 ◽  
pp. 23-29 ◽  
Author(s):  
Alexander Koder ◽  
Peter Schwanzer ◽  
Florian Zacherl ◽  
Hans-Peter Rabl ◽  
Wolfgang Mayer ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Soybean Oil ◽  
Diesel Fuel ◽  
Common Rail ◽  
Emission Characteristics ◽  
Jatropha Oil

scholarly journals Effect of butanol on fuel consumption and smoke emission of direct injection diesel engine fueled by jatropha oil and diesel fuel blends with cold EGR system

2018 ◽  
Vol 49 ◽  
pp. 02010
Author(s):  
Syarifudin ◽  
Syaiful ◽  
Eflita Yohana
Keyword(s):  
Diesel Engine ◽  
Fuel Consumption ◽  
Diesel Fuel ◽  
Diesel Engines ◽  
Alternative Fuels ◽  
Fossil Fuels ◽  
Direct Injection ◽  
Jatropha Oil ◽  
Fuel Blend ◽  
Direct Injection Diesel Engine

Diesel engines are widely used in industry, automotive, power generation due to better reliability and higher efficiency. However, diesel engines produce high smoke emissions. The main problem of diesel engine is actually the use of fossil fuels as a source of energy whose availability is diminishing. Therefore alternative fuels for diesel fuels such as jatropha and butanol are needed to reduce dependence on fossil fuels. In this study, the effect of butanol usage on fuel consumption and smoke emissions of direct injection diesel engine fueled by jatropha oil and diesel fuel with cold EGR system was investigated. The percentage of butanol was in the range of 5 to 15%, jatropha oil was in the range of 10 to 30% and the balance was diesel fuel. Cold EGR was varied through valve openings from 0 to 100% with 25% intervals. The experimental data shows that the BSFC value increases with increasing percentage of butanol. In addition, the use of EGR results in a higher increase of BSFC than that without EGR. While the addition of butanol into a blend of jatropha oil and diesel fuel causes a decrease in smoke emissions. The results also informed that the use of EGR in the same fuel blend led to increased smoke emissions.

Low and High Purity Methanol Effect on Performance and Smoke Emission of Direct Injection Diesel Engine with Cooled EGR Fueled by Diesel Fuel and Jatropha Oil Blends

2014 ◽  
Vol 660 ◽  
pp. 426-430 ◽  
Author(s):  
Syaiful ◽  
Sobri ◽  
Nathanael P. Tandian
Keyword(s):  
Diesel Engine ◽  
Diesel Fuel ◽  
High Purity ◽  
Direct Injection ◽  
Jatropha Oil ◽  
Smoke Emission ◽  
Fuel Blend ◽  
Oil Blends ◽  
Fuel Blends ◽  
Oil Blend

The aim of this study is to experimentally investigate an effect of low and high purity methanol on a performance and smoke emission of diesel engine with cooled EGR system fueled by diesel fuel and jatropha oil blend. A four-stroke water cooled direct injection (DI) diesel engine with cooled EGR system was used in this work. The diesel engine was fueled by diesel fuel, jatropha oil and low (LPM) or high (HPM) purity methanol blends at the ratio of 100/0/0, 75/20/5, 70/20/10 and 65/20/15 % on volume basis respectively for the variation of engine loads in the range of 25 to 100% with 25% increments at 2000 rpm. Each load for every fuel blend was given by the 0% and 16.5% EGR rates. The results are found that the brake power for diesel engine fueled by diesel fuel, jatropha oil and LPM is approximately 8% lower than that of diesel engine fueled with the neat diesel, while it increases to 5.24% at the low load and reduces to 6.11% at the high load by injecting HPM in the fuel blends. At the same case, BSFC increases approximately 4.5% by injecting LPM in the fuel blends. The brake thermal efficiency rises approximately by 3.3% with LPM in the fuel blends, whereas it increases approximately 6% by injecting HPM. The smoke opacity reduces approximately by 70% with LPM or HPM in the fuel blends.

Review Study on Spray Cone Angle in Diesel Engine Fuelled with Biodiesel and its Derivatives

2014 ◽  
Vol 984-985 ◽  
pp. 938-942
Author(s):  
R. Vivek ◽  
P. Raghu ◽  
K. Pitchandi ◽  
N. Nallusamy
Keyword(s):  
Diesel Engine ◽  
Vegetable Oils ◽  
Rapeseed Oil ◽  
Cone Angle ◽  
Jatropha Oil ◽  
Spray Characteristics ◽  
Spray Cone Angle ◽  
Spray Cone ◽  
Used Frying Oil ◽  
Review Study

— There are so many articles related to the review on diesel and biodiesel such as edible and inedible vegetable oils, performance and exhaust emissions of diesel engine fuelled with biodiesel oil and its derivatives. Spray characteristics was not considered in those reviews. In this study spray characteristics in diesel engine fuelled with biodiesel oil and its derivatives and diesel will be reviewed. Edible vegetable oils, soybean oil and rapeseed oil were mainly investigated. Inedible jatropha oil, used frying oil and palm oil was investigated in diesel engine. Spray cone angle were examined among the macroscopic spray characteristics.

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