scholarly journals Physical Properties and Combustion Characteristics of Emulsion Fuels of Water/Diesel Fuel and Water/Diesel Fuel/Vegetable Oil Prepared by Ultrasonication

2013 ◽  
Vol 56 (1) ◽  
pp. 52-57 ◽  
Author(s):  
Hiroki Imazu ◽  
Yoshihiro Kojima
Keyword(s):  
Physical Properties ◽  
Vegetable Oil ◽  
Diesel Fuel ◽  
Combustion Characteristics

scholarly journals Experimental Study of the Effect of Hydrotreated Vegetable Oil and Oxymethylene Ethers on Main Spray and Combustion Characteristics under Engine Combustion Network Spray A Conditions

2020 ◽  
Vol 10 (16) ◽  
pp. 5460
Author(s):  
José V. Pastor ◽  
José M. García-Oliver ◽  
Carlos Micó ◽  
Alba A. García-Carrero ◽  
Arantzazu Gómez
Keyword(s):  
Vegetable Oil ◽  
Diesel Fuel ◽  
Ignition Delay ◽  
Soot Formation ◽  
Imaging Techniques ◽  
Detection Threshold ◽  
Combustion Characteristics ◽  
Engine Combustion ◽  
Lift Off ◽  
Oxygenated Fuels

The stringent emission regulations have motivated the development of cleaner fuels as diesel surrogates. However, their different physical-chemical properties make the study of their behavior in compression ignition engines essential. In this sense, optical techniques are a very effective tool for determining the spray evolution and combustion characteristics occurring in the combustion chamber. In this work, quantitative parameters describing the evolution of diesel-like sprays such as liquid length, spray penetration, ignition delay, lift-off length and flame penetration as well as the soot formation were tested in a constant high pressure and high temperature installation using schlieren, OH∗ chemiluminescence and diffused back-illumination extinction imaging techniques. Boundary conditions such as rail pressure, chamber density and temperature were defined using guidelines from the Engine Combustion Network (ECN). Two paraffinic fuels (dodecane and a renewable hydrotreated vegetable oil (HVO)) and two oxygenated fuels (methylal identified as OME1 and a blend of oxymethylene ethers, identified as OMEx) were tested and compared to a conventional diesel fuel used as reference. Results showed that paraffinic fuels and OMEx sprays have similar behavior in terms of global combustion metrics. In the case of OME1, a shorter liquid length, but longer ignition delay time and flame lift-off length were observed. However, in terms of soot formation, a big difference between paraffinic and oxygenated fuels could be appreciated. While paraffinic fuels did not show any significant decrease of soot formation when compared to diesel fuel, soot formed by OME1 and OMEx was below the detection threshold in all tested conditions.

scholarly journals Effect of Pentanol-Diesel Fuel Blends on Thermo-Physical Properties, Combustion Characteristics, Engine Performance and Emissions of a Diesel Engine

2018 ◽  
Vol 15 (3) ◽  
pp. 5435-5450 ◽  
Author(s):  
Zuhaira Abdullah ◽  
Hazrulzurina Suhaimi ◽  
Adam Abdullah ◽  
Mohd Firdaus Taufik ◽  
Anes G. Mrwan
Keyword(s):  
Diesel Engine ◽  
Physical Properties ◽  
Diesel Fuel ◽  
Engine Performance ◽  
Combustion Characteristics ◽  
Engine Load ◽  
Fuel Blends ◽  
Performance And Emissions ◽  
Engine Performance And Emissions ◽  
Thermo Physical Properties

The objective of this study is to analyse the effect of pentanol-diesel fuel blends on thermo-physical properties, combustion characteristics, engine performance, and emissions of a diesel engine. The experimental tests were performed using YANMAR TF120M single-cylinder, direct-injection diesel engine. The fuel tests were evaluated using 5 %, 10 %, and 20 % pentanol added onto diesel fuel (DF), denoted as PE5, PE10 and PE20, respectively, to produce pentanol-diesel fuel blends at a constant engine speed of 1800 rpm under various engine loads. Based on the results, thermo-physical properties show that the calorific value, density, and kinematic viscosity were reduced by 8.12 %, 1.2 %, and 12 % for PE20. In addition, at 25 % engine load, the in-cylinder pressure of PE5, PE10, and PE20, were reduced by 1.76 %, 3.43 %, and 6.54 %, respectively, compared to DF. Furthermore, maximum heat release rate of PE5, PE10, and PE20 were reduced by 6.74 %, 7.50 %, and 18.54 %, respectively, compared to DF at 25 % engine load. Moreover, at 25 % engine load, the brake specific fuel consumption of PE5 showed better performance result due to fuel consumptions usage being reduced by 20.83 %. Conversely, brake thermal efficiency increased by 11.2 %, at 25 % engine load for PE5. CO and CO2 emissions decreased by 9.99 % and 3.2 %, respectively, at 100 % engine load of PE20.

Effect of Ethanol–Diesel Fuel Blends on Autoignition and Combustion Characteristics in HCCI Engines

2017 ◽  
Vol 17 (17th International Conference) ◽  
pp. 1-15
Author(s):  
Aly Elzahaby ◽  
Medhat Elkelawy ◽  
Hagar Bastawissi ◽  
Saad El-Malla ◽  
Abdel Moneim Naceb
Keyword(s):  
Diesel Fuel ◽  
Combustion Characteristics ◽  
Fuel Blends ◽  
Hcci Engines

Analysis of combustion characteristics, engine performances and emissions of long-chain alcohol-diesel fuel blends

Fuel ◽  
2018 ◽  
Vol 220 ◽  
pp. 682-691 ◽  
Author(s):  
Hazrulzurina Suhaimi ◽  
Abdullah Adam ◽  
Anes G. Mrwan ◽  
Zuhaira Abdullah ◽  
Mohd. Fahmi Othman ◽  
...  
Keyword(s):  
Diesel Fuel ◽  
Combustion Characteristics ◽  
Chain Alcohol ◽  
Fuel Blends ◽  
Long Chain Alcohol ◽  
Long Chain

Comprehensive Study on the Effect of CuO Nano Fluids Prepared Using One-Step Chemical Synthesis Method on the Behavior of Waste Cooking Oil Biodiesel in Compression Ignition Engine

2019 ◽  
Vol 11 (4) ◽  
Author(s):  
Ramanathan Velmurugan ◽  
Jaikumar Mayakrishnan ◽  
S. Induja ◽  
Selvakumar Raja ◽  
Sasikumar Nandagopal ◽  
...  
Keyword(s):  
Chemical Synthesis ◽  
Vegetable Oil ◽  
Diesel Fuel ◽  
Synthesis Method ◽  
Waste Cooking Oil ◽  
Compression Ignition ◽  
Cooking Oil ◽  
One Step ◽  
Ci Engine ◽  
The Impact

Vegetable oil is considered as one among the promising alternatives for diesel fuel as it holds properties very close to diesel fuel. However, straight usage of vegetable oil in compression ignition (CI) engine resulted in inferior performance and emission behavior. This can be improved by modifying the straight vegetable oil into its esters, emulsion, and using them as a fuel in CI engine showcased an improved engine behavior. Waste cooking oil (WCO) is one such kind of vegetable oil gained a lot of attraction globally as it is generated in a large quantity locally. The present investigation aims at analyzing various parameters of single cylinder four stroke CI engine fueled with waste cooking oil biodiesel (WCOB), waste cooking oil biodiesel water emulsion (WCOBE) while the engine is operated with a constant speed of 1500 rpm. Furthermore, an attempt is made to study the impact of nanofluids in the behavior of the engine fueled with WCOB blended with nanofluids (WCOBN50). This work also explored a novel method of producing nanofluids using one-step chemical synthesis method. Copper oxide (CuO) nanofluids were prepared by the above mentioned method and blended with waste cooking oil biodiesel (WCOBN50) using ethylene glycol as a suitable emulsifier. Results revealed that brake thermal efficiency (BTE) and brake specific fuel consumption (BSFC) of WCOBN50 are significantly improved when compared to WCOB and WCOBE. Furthermore, a higher reduction in oxides of nitrogen (NOx), carbon monoxide (CO), hydrocarbon (HC), and smoke emissions were observed with WCOBN50 on comparison with all other tested fuels at different power outputs. It is also identified that one-step chemical synthesis method is a promising technique for preparing nanofluids with a high range of stability.

scholarly journals DESIGN OF A MOBILE BIO-DIESEL PRODUCTION FACILITY

2011 ◽  
Author(s):  
B. J. Drake ◽  
M. Jacques ◽  
D. Binkley ◽  
S. Barghi ◽  
R. O. Buchal
Keyword(s):  
Particulate Matter ◽  
Vegetable Oil ◽  
Diesel Fuel ◽  
High Speed ◽  
Solid Particles ◽  
Vacuum Filter ◽  
Production Facility ◽  
Operational Life ◽  
Used Vegetable Oil ◽  
Diesel Production

In 2004/2005, a team of mechanical engineering students undertook an interdisciplinary capstone design project to design a mobile bio-diesel production facility capable of converting 500 L/h of used vegetable oil or animal tallow into bio-diesel fuel. Bio-diesel fuel has negligible sulfur content and significantly reduces the emission of particulate matter, e.g. soot and carbon monoxide, compared to the combustion of conventional diesel fuel. Furthermore, bio-diesel fuel is biodegradable, nontoxic, and can be produced from renewable feedstock. The mobile facility is capable of taking used vegetable oil from different sources and processing the oil while in motion, eliminating costs associated with transportation, land use and construction. A special filter was designed to remove any major particulate matter as well as wax-like substances formed by heating of the cooking oil during its operational life. A rotary vacuum filter was designed to continuously of remove wax and solid particles accumulated on the filter cloth. The wax and solid wastes, which are organic compounds, are readily converted to useful light organic molecules through a subsequent gasification process. A transesterification process was applied using methanol as a solvent and sodium hydroxide as a catalyst. A mix of unrefined bio-diesel fuel and glycerol, which is produced by transestrification, is sent to a glycerol separating tower. The separator was designed to efficiently separate bio-diesel fuel from glycerol. The bio-diesel fuel is neutralized by weak acid solution and washed by water to remove impurities. High-speed mixers were designed to create maximum contact between phases for efficient separation. The mobile facility is subject to vibration, which was considered in every aspect of the design. The facility will be powered by bio-diesel fuel, and heat recovery and water recycling were considered to minimize energy requirements. The project culminated in a final design report containing detailed engineering analysis and a comprehensive set of working drawings.

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