Biodiesel has been identified as a potential alternative fuel for CI engines because use of biodiesel can reduce petroleum diesel consumption as well as engine out emissions. Out of many biodiesel derived from various resources, biodiesel from Waste Cooking Oil (WCO) can be prepared economically using usual transesterification process. In the present study, in-depth research and comparative study of blends of biodiesel made from WCO and diesel is carried out to bring out the benefits of its extensive usage in CI engines. The experimental results of the study reveal that the WCO biodiesel has similar characteristics to that of diesel. The brake thermal efficiency, carbon monoxide, unburned hydrocarbon and smoke opacity are observed to be lower in the case of WCO biodiesel blends than diesel. On the other hand specific energy consumption and oxides of nitrogen of WCO biodiesel blends are found to be higher than diesel. In addition combustion characteristics of all biodiesel blends showed similar trends when compared to that of conventional diesel. © 2014 Production and hosting by Elsevier B.V. on behalf of Faculty of Engineering, Alexandria University.

Nantha Gopal K

Department of Automotive Engineering

School of Mechanical Engineering

Vellore Campus

Sathiyanarayanan K

Department of Chemistry

School of Advanced Sciences

Pal A

Sharma S

Samanchi C

Elango T.

Fulltext

Vellore Institute of Technology (VIT) is a private university located in&nbsp;Tamil Nadu, India. Founded in 1984, as Vellore Engineering College, the institution offers 20 undergraduate, 34 postgraduate, four integrated and four research programs. It has campuses in Vellore, Amravati, Bhopal and Chennai.

VIT is one of the top ranked private universities in India according to NIRF, THE and QS Rankings.&nbsp;Govt. of India has recognized&nbsp;VIT, Vellore as an&nbsp;Institution of Eminence. This has allowed VIT to take independent quality initiatives and move up in world ranking.

&nbsp;

&nbsp;

VIT University

Alexandria Engineering Journal

Abstract: Biodiesel is an alternative sustainable energy source and can be utilized in the compression ignition engine without any changes in the engine design. This research work focuses on the preparation of Calophyllum inophyllum methyl ester through two steps of transesterification process and its implementation in common rail direct injection diesel engines under various fuel injection strategies. At the initial stage of the current research work, two biodiesel blends of 10 vol% and 20 vol% with remaining quantity as diesel have been used as fuel in a diesel engine at a fuel injection pressure of 600 bar at 5%, 10% and 15% pilot injection variations. In the second stage, the study has been extended for the same strategies of injecting the fuel at the rates of 10% and 20% exhaust gas recirculation. All the experimental results are compared with diesel fuel at an injection pressure of 600 bar with 10% pilot injection. The experimental results revealed that an increase in the blend ratio of biodiesel enhances the combustion, performance characteristics and proliferation of pilot injection from 5 to 15% facilitates spontaneous and complete combustion. It is observed that 15% pilot injection quantity of 20 vol% Calophyllum inophyllum methyl ester blend has shown the best performance among the test samples with other injection strategies. The results also showed that the implementation of exhaust gas recirculation at 10% and 20% rates during diesel engine operation is evident in lower performance characteristics with a significant impact on oxides of nitrogen and carbon dioxide emissions. Graphic abstract: [Figure not available: see fulltext.]. © 2019, Springer-Verlag GmbH Germany, part of Springer Nature.

Clean Technologies and Environmental Policy

Experimental investigation on engine parameters variation in common rail direct injection engine fueled with biodiesel

The current work aims at assessing the single cylinder, diesel engine fueled with nano-emulsion of orange peel oil biodiesel. The orange oil was elicited from orange peels through solvent extraction method then converted into methyl ester. By using the solvent extraction method, the orange peel oil (Limonene) yield was achieved up to 82.3%. Later, nanofluid was prepared in two different concentrations by doping 50 and 100 ppm of TiO2 nanoparticles. The orange oil biodiesel nano-emulsions namely OOME-T50 and OOME-T100 were prepared with the proportion of 88% of pure orange oil methyl ester, 10% of TiO2 nanofluid and 2% of span-80 as a surfactant. Experiments were performed with prepared fuels (pure OOME, OOME-T50 and OOME-T100) in a test engine and its results were discussed. The BTE of the engine increased up to 1.4% and 3.0% with OOME OOME-T50 and OOME-T100 fuels when correlated with pure OOME fuel. However, neat diesel fuel indicates maximum BTE at peak load condition. Significant reduction of about 24.2%, 9.7%, 18.4%, 16.0% in smoke, NOx, CO and HC were observed for OOME-T100 nano-emulsion fuel as correlated to pure OOME at peak load. Also, it can be noted that the cylinder peak pressure and heat release rate were increased for OOME nano-emulsion fuels when compared to pure OOME at greatest power output. © 2019 Elsevier Ltd

Renewable Energy

A study on performance, emission and combustion characteristics of diesel engine powered by nano-emulsion of waste orange peel oil biodiesel

The usage of automobiles growing day by day leading to the depletion of fossil fuels and environmental degradation, hence there is a necessity to discover the other resources to come across the demand of energy crisis of the present trend and also to restrict the emissions that are produced by the fossil fuels. At this instance, alternate fuels being the best possible solution among which biofuels may be the suitable one to internal combustion engines. Many of the researchers from their investigations showed that various engine tests of short duration using biofuels were precisely encouraging, but the problem arises with long term engine durability tests resulting in engine failure due to higher amount of carbon deposition and polluting the lubricating oil. The main aim of this review is to study the tribological feasibility of biofuels for transportation applications as the tribological performance of the biofuels plays a crucial role in automobiles. The various tribological aspects of biofuels in terms of material compatibility, long term endurance, wear and frictional characters are discussed in detail. This review presents the detailed studies on the tribological parameters in terms of friction and wear characteristics employing various types of biodiesel and biofuels as fuels in both the compression ignition and spark ignition engines and also adopting the bio-oils as lubricating oil. However, the present review will not carry out any fresh results rather than provides the developments followed in past trends and put forward certain future perspectives in the field of tribological concept of biofuels. © 2019 Elsevier Ltd

Fuel

Tribological aspects of biofuels – A review

The objective of this work was to compare the effect of diethyl ether (DEE) and methyl tertiary-butyl ether (MTBE) addition to biodiesel and diesel blends on diesel engine. The ethers concentration have been varied in proportion of 5% and 10% on volume basis with biodiesel by keeping the diesel concentration as 50% for all ternary blends preparation. Experimental results revealed that D50-B45-DEE5 ternary blend has shown 5.3% increase in thermal efficiency compared to other ternary blends. On the other hand, D50-B45-MTBE5 and D50-B45-DEE ternary blends have reduced CO emission by 8.1% and 14.8% respectively when compared to high speed diesel fuel. Furthermore, the D50-B40-DEE10 blend and D50-B40-MTBE10 reduce the NOx emission by 32% and 8.8% when compared to HSD at maximum load condition. Significant reduction is noted in HC emission for all ether added ternary blends than that of HSD and biodiesel fuels. However, the smoke emission is decreased marginally for D50-B45-DEE5 than that of HSD fuel. Finally, it is evident that both the DEE and MTBE could be used as viable additive with diesel or biodiesel in binary and ternary forms for diesel engine applications. © 2019 Elsevier Ltd

Energy

Impact of addition of two ether additives with high speed diesel- Calophyllum Inophyllum biodiesel blends on NOx reduction in CI engine

The aim of the present work deals with the investigation of compression ignition characteristics for different concentrations of diethyl ether in diesel - Calophyllum Inophyllum Methyl Ester blends. Initially, various experiments were conducted for diesel, neat biodiesel, 50% blends of diesel and biodiesel at various engine loads with constant speed conditions. All the ternary blends were prepared by adding 5%,7.5%, 10% and 12.5% of diethyl ether with diesel-biodiesel blends. The addition of diethyl ether was limited by 12.5% by volume because the engine was not running at higher engine loads. The experimental study revealed that the brake thermal efficiency was reduced by 5.3% with increase in brake specific fuel consumption for 12.5% addition of diethyl ether in the blend when compared to diesel fuel. Further, the diesel engine operation with diesel-biodiesel-diethyl ether ternary blends has shown 84%, 4.6% and 57% reduction in unburned hydrocarbon, carbon monoxide and oxides of nitrogen emissions than that of diesel fuel at 100% engine load. The carbon dioxide emission formation was similar to diesel fuel at lower concentration of diethyl ether and 5.2% reduction was noted for higher fraction in the blend. Meanwhile, the smoke opacity has increased to 80.1% for 12.5% of diethyl ether addition in the blend. However, the combustion characteristics are slightly dropdown when the diesel engine was operated with all the ternary blends of diethyl ether. © 2018 Elsevier Ltd

Energy Conversion and Management

Investigation on diethyl ether as an additive with Calophyllum Inophyllum biodiesel for CI engine application

Performance, emission and combustion characteristics of biodiesel fuelled variable compression ratio engine

International Journal of Engineering and Technology

Experimental Investigation of the Effect of Exhaust Gas Recirculation on Performance and Emissions Characteristics of a Diesel Engine Fueled with Biodiesel

Biomass and Bioenergy

Effect of biodiesel unsaturated fatty acid on combustion characteristics of a DI compression ignition engine

Renewable and Sustainable Energy Reviews

A review on biodiesel production, combustion, emissions and performance

Applied Thermal Engineering

Biodiesel from cotton seed oil and its effect on engine performance and exhaust emissions

Investigation of emissions and combustion characteristics of a CI engine fueled with waste cooking oil methyl ester and diesel blends

Journal	Data powered by TypesetAlexandria Engineering Journal
Publisher	Data powered by TypesetElsevier BV
ISSN	1110-0168
Open Access	Yes