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

Effects of Alumina Nanoparticles Additives Into Jojoba Methyl Ester-Diesel Mixture on Diesel Engine Performance

2014 ◽  
Author(s):  
Ali M. A. Attia ◽  
Ahmed I. El-Seesy ◽  
Hesham M. El-Batsh ◽  
Mohamed S. Shehata
Keyword(s):  
Diesel Engine ◽  
Methyl Ester ◽  
Diesel Fuel ◽  
Engine Performance ◽  
Operating Conditions ◽  
Nano Particles ◽  
Alumina Nanoparticles ◽  
Promising Alternative ◽  
Nano Additives ◽  
Conventional Diesel Fuel

Currently, using biofuels to operate diesel engines gets a great attention to the extent that it could replace the limited conventional fossil fuels. These fuels have a closed life cycle (renewable) and they have a remarkable effect on the global greenhouse phenomena. Moreover, the use of non-edible vegetable oils is considered a good choice after a suitable chemical and/or thermal treatment to convert them into esters. The use of jojoba oil shows a promising alternative fuel for conventional diesel fuel even there were unfavorable effects including power reduction. The wide spread usage of nano additives to improve the combustion quality may be a good solution for these problems. This study represents an experimental investigation to examine the effect of nano additives on diesel engine performance at variable operating conditions of load and speed. In this work, alumina nano-particles are added to a mixture of jojoba methyl ester (biodiesel) and conventional diesel fuel at the most recommended value (20% biodiesel and 80% diesel fuel) with different doses from 10 up to 50 mg/l. The received mixture is homogenized with an ultrasonicator mixer. It is found that, the appropriate nano-additives dose corresponding to optimal engine performance is about 30 mg/l. At this dose, the overall BSFC is reduced by about 6%, engine thermal efficiency is increased up to 7%, and all engine emissions have been reduced (NOx about 70%, CO about 75 %, smoke opacity about 5%, and UHC about 55 %) compared with the corresponding values obtained when only a blended fuel of 20% biodiesel is used.

scholarly journals RESEARCH ON THE PROCESS OF BIOFUEL INJECTION / BIODEGALŲ IŠPURŠKIMO PROCESO TYRIMAS

2012 ◽  
Vol 4 (4) ◽  
pp. 381-385
Author(s):  
Birutė Skukauskaitė ◽  
Tomas Mickevičius
Keyword(s):  
Diesel Engine ◽  
Combustion Chamber ◽  
Diesel Fuel ◽  
Rapeseed Oil ◽  
Fuel Injection ◽  
Injection Pressure ◽  
Fuel Spray ◽  
Chamber Volume ◽  
Air Density ◽  
Engine Combustion

The purpose of this research was to examine penetration peculiarities of rapeseed oil injected into the combustion chamber of a diesel engine. For conducting tests, a stand imitating conditions (air density) for the engine combustion chamber was designed. The analysis of pictures obtained using a fast recording camera determined fuel injection into the chamber volume and calculated the velocity of spray head. It was established that fuel spray of injected rapeseed oil proceeds deeper into the combustion chamber than that of mineral diesel fuel. The parameters of fuel spray are mainly influenced by injection pressure rather than by the density of compressed gases. Santrauka Šio darbo tikslas buvo ištirti į dyzelinio variklio degimo kamerą įpurškiamos rapsų aliejaus čiurkšlės kitimo ypatumus, lyginant su mineraliniu dyzelinu. Tyrimams sukonstruotas stendas, kuriame buvo imituojamos sąlygos (oro tankis), esančios variklio degimo kameroje. Analizuojant spartaus filmavimo vaizdo kamera gautus vaizdus, buvo išmatuotas degalų čiurkšlės įsiskverbimo į degimo kamerą dydis, apskaičiuotas čiurkšlės fronto judėjimo greitis. Nustatyta, kad įpurškiamo rapsų aliejaus čiurkšlė į degimo kamerą įsiskverbia giliau, negu mineralinio dyzelino čiurkšlė. Įpurškiamų degalų čiurkšlės parametrams didesnės įtakos turi įpurškimo slėgis nei aplinkos dujų tankis.

scholarly journals ANALYSIS OF PERFORMANCE AND EMISSION CHARACTERISTICS OF A DIESEL ENGINE FUELLED WITH BIODIESEL

2017 ◽  
Vol 46 (1) ◽  
pp. 16-21
Author(s):  
R. Sundara Raman ◽  
G. Sankara Narayanan ◽  
N. Manoharan ◽  
S. Sendilvelan
Keyword(s):  
Diesel Engine ◽  
Rice Bran ◽  
Diesel Fuel ◽  
Alternative Fuels ◽  
Rice Bran Oil ◽  
Transport Sector ◽  
Exhaust Emission ◽  
Emission Characteristics ◽  
Particulate Emission ◽  
Promising Alternative

The rapid depletion in world petroleum reserves and uncertainty in petroleum supply due to political and economical reasons along with the sharp escalation in the petroleum prices have simulated the search for alternatives to petroleum based fuels especially diesel and gasoline. Moreover, bulks of petroleum fuels are being consumed by agriculture and transport sector for which diesel engine happens to be the prime mover. Though there are wide varieties of alternative fuels available the research has not yet provided the right renewable fuel to replace diesel. Vegetable oil due to their properties being close to diesel fuel may be a promising alternative for diesel engines. Due to their high viscosity, they cannot be directly used in a diesel engine. Transesterification is one method by which viscosity could be drastically reduced and the fuel could be adopted for use in diesel engine. Present investigation focuses on use of Rice Bran Oil in Diesel engine. Performance and exhaust emission characteristics of the engine have been evaluated. Esterified Rice Bran Oil has exhibited performance very close to that of diesel fuel. In the present work it is observed that, the NOX and unburned hydrocarbon emission decreases and carbon monoxide, particulate emission and smoke intensity increases with the use of biodiesel in diesel engine. When compared to non-esterified Rice Bran Oil, esterified Rice Bran Oil emits less smoke and therefore be regarded as an environment friendly fuel.

scholarly journals Experimental Investigation on Performance, Combustion, Emission and Vibration Analysis of Diesel Engine Fuelled with Rice Bran Biodiesel and n-Butanol Additive

2021 ◽  
Author(s):  
Rajendra Pawar ◽  
◽  
Sharad Patil ◽  
Kamalesh Jagadale ◽  
Pranali Gujar ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Rice Bran ◽  
Diesel Fuel ◽  
Alternative Fuels ◽  
Fossil Fuels ◽  
Nitric Oxides ◽  
Promising Alternative ◽  
Fuel Prices ◽  
Engine Cylinder ◽  
Combustion Emission

Substantial growth in emissions, hike in fuel prices, and exhaustion of fossil fuels has given rise to the need for substitute fuels for diesel engines, which are renewable and demote the emission. Also, strict international emission standards force researchers to seek alternative fuels. Vegetable oils are promising alternative biodiesel for a diesel engine, amongst them, rice bran is underutilized, a non-edible source that doesn’t create any food security hurdle. The paper focused to investigate the performance, combustion, emission, and vibration characteristics of diesel engine fuelled with rice bran biodiesel and n- butanol additive (5% constant) at CR 17.5. The engine characteristics of seven biodiesel blends (B5n5, B10n5, B15n5, B20n5, B25n5, B30n5, and B40n5) were measured at various loads under constant speed and compared with diesel fuel. The performance characteristics were observed in moderate quantities as compared to diesel whereas the emissions were found reduced drastically than diesel fuel except for nitric oxides (NOx) emissions. The measured engine cylinder vibration for all blends indicates similar results as diesel fuel hence leads to smooth combustion. The investigation shows that blends from B20n5 to B30n5 have the potential to be used in a diesel engine without any modification.

Toxicity Parameters of Exhaust Gases of Diesel Engine Running on Mixed Composition Biofuels

2015 ◽  
Vol 4 (5) ◽  
pp. 15-28
Author(s):  
Девянин ◽  
S. Devyanin ◽  
Марков ◽  
V. Markov ◽  
Неверова ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Methyl Ester ◽  
Experimental Research ◽  
Diesel Fuel ◽  
Rapeseed Oil ◽  
Optimal Composition ◽  
Mixed Composition ◽  
Exhaust Gases ◽  
Method Optimization ◽  
Ecological Parameters

The article displays advantages of using multicomponent mixed biofuels for diesel engines, i.e. mixtures of oil diesel fuel and rapeseed oil, rapeseed oil methyl ester, gasoline. The results of experimental research on a D-245.12C type automotive diesel engine running on these fuels are presented. A method of determining the optimal composition of multicomponent biofuels is proposed. Using this method optimization calculations of the fuel compositions are made. It is demonstrated that among tested biofuels the mixture of 80% oil diesel fuel, 10% of rapeseed oil and 10% of gasoline possesses the superior ecological parameters.

Investigation of the Possibilities of Using Soybean Oil as an Ecological Additive to Petroleum Diesel Fuel

2022 ◽  
pp. 39-52
Author(s):  
S.N. Devyanin ◽  
V.A. Markov ◽  
A.G. Levshin ◽  
T.P. Kobozeva ◽  
V.A. Neverov
Keyword(s):  
Diesel Engine ◽  
Soybean Oil ◽  
Diesel Fuel ◽  
Alternative Fuels ◽  
Combustion Engine ◽  
Raw Materials ◽  
Experimental Studies ◽  
Chemical Properties ◽  
Promising Alternative ◽  
Plant Raw Materials

One of the most important areas of internal combustion engine improvement is its adaptation to work on alternative fuels. Motor fuels obtained from renewable plant raw materials are considered to be promising alternative fuels. The article considers the possibility of using soybean oil as an ecological additive in petroleum diesel fuel. The features of soybean oil production and the physico-chemical properties of soybean oil and a mixture containing 80 % (by volume) of petroleum diesel fuel and 20 % of soybean oil are researched. Computational studies of the processes of fuel atomization and mixture formation in the D-245 diesel engine operating on mixtures of petroleum diesel fuel and seed oil have been performed. Experimental studies of the D-245 diesel engine operating on petroleum diesel fuel and the specified blended fuel have been carried out. Conversion of a diesel engine from petroleum fuel to mixed one leads to a decrease in integral emissions per test cycle: nitrogen oxides by 19.1 %, carbon monoxide — by 10.5 %, unburned hydrocarbons - by 8.9 %.

scholarly journals Optimization of Mixed Biofuels Composition for Diesel Engines

10.12737/6632 ◽  
2014 ◽  
Vol 3 (6) ◽  
pp. 19-30 ◽  
Author(s):  
Сивачев ◽  
V. Sivachev ◽  
Маркова ◽  
V. Markova ◽  
Марков ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Methyl Ester ◽  
Diesel Fuel ◽  
Diesel Engines ◽  
Rapeseed Oil ◽  
Rotation Speed ◽  
Fuel Composition ◽  
Optimal Composition ◽  
Mixed Fuel ◽  
Ecological Characteristics

The advantages of vegetable oil-based biofuels using in diesel engines have been demonstrated. Methods for determining of optimal composition for mixed fuels containing petroleum diesel fuel and methyl ester of rapeseed oil have been proposed. Optimization calculations of such mixed fuel composition for a type 245.12С diesel engine have been carried out using the proposed methods. It has been shown that a mixture containing 60 % of petroleum diesel fuel and 40 % of methyl ester of rapeseed oil has the best ecological characteristics among the researched mixed biofuels. Even better ecological characteristics are reached when such mixture’s ingredients are regulated according to changes of the engine’s shaft rotation speed and load.

scholarly journals Experimental Study on the Production of Karanja Oil Methyl Ester and Its Effect on Diesel Engine

2012 ◽  
Vol 1 (3) ◽  
pp. 115 ◽  
Author(s):  
N Shrivastava ◽  
S.N Varma ◽  
M Pandey
Keyword(s):  
Diesel Engine ◽  
Methyl Ester ◽  
Diesel Fuel ◽  
Alternative Fuels ◽  
Base Line ◽  
Engine Fuel ◽  
Oxides Of Nitrogen ◽  
Actual Performance ◽  
Performance And Emission ◽  
Karanja Oil

Fast depletion of fossil fuel resources forces the extensive research on the alternative fuels. Vegetable oils edible or non edible can be a better substitute for the petroleum diesel. Karanja, a non edible oil can be a potential source to replace the diesel fuel. To investigate the feasibility of Karanja oil as an alternative diesel fuel, its biodiesel was prepared through the transesterification process. The Biodiesel was then subjected to performance and emission tests in order to assess its actual performance, when used as a diesel engine fuel. The data generated for the 20, 50 and 100 percent blended biodiesel were compared with base line data generated for neat diesel fuel. Result showed that the Biodiesel and its blend showed lower thermal efficiency. Emission of Carbon monoxide, unburned Hydrocarbon and smoke was found to be reduced where as oxides of nitrogen was higher with biodiesel and its blends. Keywords: alternate Diesel fuel; Biodiesel; Karanja oil methyl ester; performance and emission

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