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Experimental tests have been carried out to evaluate the performance, emission and combustion characteristics of a diesel engine using Neat poon oil and its blends of 20%, 40%, and 60%, and standard diesel fuel separately. The common problems posed when using vegetable oil in a compression ignition engine are poor atomization; carbon deposits, ring sticking, etc. This is because of the high viscosity...
In the present work, the effect of using neat orange oil, optimum orange oil–diesel blend and the optimum flow rate of DEE with orange oil are evaluated for the performance, emissions and combustion characteristics of a single cylinder, diesel engine. The experimental results show that carbon monoxide (CO), hydrocarbon (HC) and smoke emissions decrease while oxides of nitrogen (NO x ) emissions...
Using hydrogen as an additive to enhance the conventional diesel engine performance has been investigated by several researchers and the outcomes are very promising. However, the problems associated with the production and storage of pure hydrogen currently limits the application of pure hydrogen in diesel engine operation. On-board hydrogen–oxygen generator, which produces H 2 /O 2 ...
The strict regulation of environmental laws, the price of oil and its restricted resources, has made engine manufacturers use other energy resources instead of oil and its products. Despite the fact that nowadays alternative fuels are not currently widely used in vehicular applications, using these kinds of fuels will be definitely inevitable in the future. In this paper, a computer code is developed...
The paper presents the experimental results obtained concerning performances and pollution of a diesel engine fueled with diesel–biodiesel–ethanol blends compared with diesel fuel in laboratory tests. The main properties of the researched fuels are presented within this paper, in comparison with classical diesel fuel (chemical composition, density, kinematic viscosity, cold filter plugging point,...
Optimal injection and ignition timings and the effects of injection and ignition timings on performance and emissions from a high-compression direct-injection stratified charge spark-ignition methanol engine have been investigated experimentally. The results have shown that direct-injection spark-ignition methanol engine, in which a non-uniform mixture with a stratified distribution can be formed,...
Experimental study has been carried out to investigate performance parameters, emissions, cylinder pressure, exhaust gas temperature (T exhaust ) and engine wall temperatures (T wall ) for direct injection diesel engine. Tests were conducted for sunflower oil (S100) and 20% jojoba oil+80% pure diesel fuel (B20) in comparison to pure diesel fuel with different engine speeds. S100 and...
The methanol has greater resistance to knock and it emits lower emissions than neat gasoline. As single cylinder small engines have low compression ratio (CR), and they run with slightly rich mixture, their power are low and emission values are high. The performance can be increased at high CR if these engines are run with fuels which have high octane number. In this study, methanol was used at high...
Nitrogen oxides and smoke emissions are the most significant emissions for the diesel engines. Especially, fuels containing high-level oxygen content can have potential to reduce smoke emissions significantly. The aim of the present study is to evaluate the influence of n-butanol/diesel fuel blends (as an oxygenation additive for the diesel fuel) on engine performance and exhaust emissions in a small...
According to the theory of “hydrophilic–lipophilic balance (HLB)” and the emulsification principle, the emulsification performance and stability of ethanol–diesel blends were studied with single and mixed emulsifiers and the effects of temperature on emulsification properties were analyzed. A novel mixed emulsifier, named “CLZ”, was developed based on biofuel and castor oil and the effects of the...
This work investigated the effects of induction of hydrogen and oxygen mixture (H 2 /O 2 ) to a heavy-duty diesel engine (HDDE) on the thermal performance, fuel consumption and emission characteristics. The HDDE was tested at one low load steady-state condition, 24.5% of the max load (40km/h), using neat diesel and seven H 2 /O 2 mixtures: 10–70L/min, interval 10L/min...
Experiments were conducted to evaluate the combustion, performance and emission parameters of a single cylinder, four stroke, air cooled, direct injection diesel engine, fueled with used transformer oil (UTO) and six of its diesel blends on varying the UTO concentration from 10% to 60%, at a regular interval of 10% by volume basis. The results were analyzed and compared with diesel operation. Increase...
De-inking sludge can be converted into useful forms of energy to provide economic and environmental benefits. In this study, pyrolysis oil produced from de-inking sludge through an intermediate pyrolysis technique was blended with biodiesel derived from waste cooking oil, and tested in a multi-cylinder indirect injection type CI engine. The physical and chemical properties of pyrolysis oil and its...
An experimental investigation has been carried out to evaluate the effect of using diethyl ether as additive to biodiesel on the combustion, performance and emission characteristics in an unmodified diesel engine at different loads and constant engine speed. The results indicate that peak cylinder pressure and heat release rate is higher for BD5 (5% (by vol.) diethyl ether blended biodiesel) than...
In this work, the effects of blending n-pentanol, a second generation biofuel with diesel on the performance and emission characteristics of a diesel engine under exhaust gas recirculation (EGR) conditions are investigated. Tests were performed on a single-cylinder, constant-speed, un-modified, direct-injection diesel engine using four n-pentanol/diesel blends: 10%, 20%, 30% and 45% (by volume). The...
This study aimed to investigate the effect of conventional diesel engine through the addition of H2 mixture, generated through water electrolysis. In this work, three different ratios of diesel–hydrogen blends, 0%, 0.6% and 1.2% hydrogen by volume used, respectively. The experiments were carried out at the idling condition under constant speed from the low to high engine load with the different amount...
In this experimental investigation, the effect of antioxidant additives on the performance and the exhaust emissions of a computerized single cylinder direct injection compression ignition (DICI) engine has been studied. The test fuel used in this study was neat lemongrass oil (LGO)–diesel blend. Neat lemongrass oil is a new alternate fuel used in a diesel engine. Antioxidant additives butylated hydroxyanisole...
Oxidation stability and NOX emission characteristics of biodiesel is a challenge to adopt biodiesel as fuel in diesel engine. In this study oxidation stability and emission characteristics of the 20% blend of calophyllum biodiesel with diesel (B20) is investigated with the different proportions of leaf extract additive. The addition of leaf extract as additive in the biodiesel proved improvement in...
In this study, we compared three different blended (20/80 by vol.) biodiesels of rice bran, neem, and cottonseed oils with varying degree of unsaturation. All three biodiesel blends decreased the brake thermal efficiency and increased the exhaust gas temperature of a single-cylinder diesel engine. They decreased CO, hydrocarbon, and smoke emissions, but increased NOx emissions. The biodiesels provided...
Biodiesel and ethanol can be blended with diesel fuel at various ratios, resulting in what is called diesohol, and can exhibit distinct behaviors. In some cases, nanoparticles can mix with fuels to improve their performance and emission characteristics. In this study, the carbon nanotubes were combined with the diesohol fuel (Ethanol+diesel) and B2 to evaluate the performance of a CI single-cylinder...
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