Showing papers on "Diesel engine published in 2019"
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TL;DR: In this article, the synergic effect of nanoparticles, biodiesel and EGR is used to improve the performance of diesel engine with minimized exhaust emissions in a B30 (30% palm biodiesel-70% diesel engine) with 25ppm TiO2 nanoparticles.
315 citations
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TL;DR: In this paper, the combined effect of nano additives, combustion chamber geometry and injection timing in a single cylinder diesel engine fuelled with ternary fuel (diesel-biodiesel-ethanol) blends is investigated.
307 citations
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TL;DR: In this article, the performance, combustion and emission characteristics of a direct injection diesel engine with diesel, rapeseed oil biodiesel and diesel-biodiesel blends at a constant injection pressure of 200 bar were evaluated.
185 citations
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TL;DR: In this article, a single-cylinder diesel engine setup equipped with the necessary sensors for measuring cylinder pressure, engine speed, output power, air flow rate, fuel flow rate and temperature at various locations in engine was used to realize the current objective.
162 citations
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TL;DR: In this article, the influence of diesel/biodiesel blends on engine combustion, performance, and exhaust gas emissions have been carried out experimentally at different engine loads and constant speed of 1400 rpm.
161 citations
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TL;DR: In this article, a single cylinder diesel engine is employed as the test engine in the present work, and exhaust emissions such as CO, CO2, NOx, HC, and smoke are measured and compared with diesel oil.
156 citations
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TL;DR: In this article, the effect of fuel injection pressure on the performance and emission characteristics of a diesel engine fuelled with waste cooking oil biodiesel (WCOB) and its 5-30% (v/v) blends with diesel fuel were investigated and compared with diesel.
151 citations
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TL;DR: In this paper, the authors investigated the combustion and emission characteristics of diesel, n-pentanol, and methanol blends on a common rail diesel engine and found that at low and partial loads, blend fuels exhibit longer ignition delays, higher peak heat release rates, shorter combustion durations and higher peak combustion temperatures than diesel.
141 citations
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TL;DR: In this paper, different blends of Roselle and Karanja biodiesels were prepared and their effects were examined experimentally with different engine loads (low, medium and full load) at constant engine speed.
131 citations
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TL;DR: The performance and emission characteristics of mahua biodiesel-fueled diesel engine with copper oxide nanoparticle at various particle sizes (10 and 20 nm) and the results compared with conventional diesel fuel (BD) are analyzed.
Abstract: The present work is aimed to analyze the performance and emission characteristics of mahua biodiesel-fueled diesel engine with copper oxide nanoparticle at various particle sizes (10 and 20 nm) and the results compared with conventional diesel fuel (BD). Experiments were conducted in a four-stroke, single-cylinder, constant speed, and naturally aspirated research diesel engine with an eddy current dynamometer. Conventional transesterification process is carried out to convert the raw mahua oil into mahua oil biodiesel (BD100). Copper oxide (CuO) was chosen as a nanoparticle; the mass fraction of 100 ppm and the particle sizes of 10 and 20 nm were blended with mahua oil methyl ester using an ultrasonicator, and the physicochemical properties were measured. The physicochemical properties of BD100 and nanoparticle-included BD100 are at par with EN14214 limits. Brake-specific fuel consumption (BSFC) of BD100 is higher than that of diesel, and brake thermal efficiency (BTE) is lower than that of diesel (D100). The inclusion of 10-nm particle size of CuO nanoparticle in BD100 improves the BSFC and BTE by 1.3 and 0.7%, respectively, when compared with BD100. The CuO nanoparticle inclusion at 20-nm nanoparticle in biodiesel further improves the performance parameters than those at 10-nm nanoparticle. Further, the BD100 promotes a lower level of smoke emissions, carbon monoxide (CO), and hydrocarbon (HC) and with a prominent increase in oxides of nitrogen (NOx) emissions. The inclusion of 10-nm particle size of CuO nanoparticle in BD100 reduces the NOx, HC, CO, and smoke emission by 3.9, 5.6, 4.9, and 2.8%, respectively, at peak load condition when compared with BD100. The addition of CuO nanoparticle at 20-nm nanoparticle in biodiesel further reduces the NOx, HC, CO, and smoke emissions.
131 citations
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TL;DR: In this paper, the impacts of diesel-biodiesel-alcohol blends on the combustion, performance and emissions characteristics of a single-cylinder diesel engine were investigated, and the experimental results showed that the highest reduction values were observed on CO emission by 42%, 30% and 8% for the D90E10, D70C20E10 and D80C20 fuels, respectively.
Abstract: The purpose of this study is to investigate the impacts of diesel–biodiesel–alcohol blends on the combustion, performance and emissions characteristics of a single-cylinder diesel engine. Tests were conducted at different engine speeds of 1750, 2250, 2750 and 3250 rpm and under full load. In this study, different fuels [called as reference diesel (D100), 20 vol% cottonseed methyl ester (D80C20), 10 vol% ethanol (D90E10) and finally the ternary type of their derivations (D70C20E10)], were used. The experimental results showed that the highest reduction values were observed on CO emission by 42%, 30% and 8% for the D90E10, D70C20E10 and D80C20 fuels, respectively. These reductions for HC emission were achieved as 40%, 31% and 23% for the D90E10, D70C20E10 and D80C20, respectively. On the other hand, the reductions of NOx and CO2 emissions were not sharp and varied between 2–7%. Besides the reductions on the exhaust emissions, biodiesel–ethanol blend presented better results in terms of HRRmax and CPmax than using biodiesel alone. Additionally, ignition delay of the biodiesel blends was longer than that of D100 fuel owing to their low cetane numbers. Combustion duration was shortened with the increment in engine speed because the turbulence increased in the combustion chamber at high engine speed. This case also improved the homogeneity of test fuels and increased the quality of the combustion process. As a consequence, this paper clearly reported that it is possible to achieve fewer emissions, the highest CPmax values with the presence of ethanol in biodiesel fuels rather than using biodiesel alone for diesel engines.
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TL;DR: In this article, the effect of diesel, rice bran biodiesel and n-butanol on the performance and emission characteristics of a diesel engine was investigated using a single stage transesterification process.
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TL;DR: In this paper, the authors investigated compression ignition characteristics for different concentrations of diethyl ether in diesel - Calophyllum Inophyllium Methyl Ester blends and found that the brake thermal efficiency was reduced by 5.3% with increase in brake specific fuel consumption.
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TL;DR: In this paper, a single cylinder, four stroke, water cooled, direct injection (DI), naturally aspirated compression ignition (CI) engine with a rated power output of 3.7kW at constant engine speed (1500rpm) using diesel and different blends of microalgae spirulina.
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TL;DR: In this paper, Pentanol and titanium oxide nanoparticles are used as additive to increase the efficiency of a diesel engine with reduced emission, and a set of experiments are carried out in water cooled multi-cylinder diesel engine at different engine rpm, different engine loads and two different injection pressures.
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TL;DR: In this paper, the effects of water addition on spray, combustion and emission characteristics of a medium speed diesel engine in terms of cylinder pressure, cylinder temperature, heat release rate, brake power, brake thermal efficiency, brake specific fuel consumption, NOx, soot, CO and CO2 emissions.
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TL;DR: In this paper, the authors investigated the effect of n-octanol with Calophyllum Inophyllium biodiesel on compression ignition engine characteristics and found that the lower fraction of NOC with biodiesel has enhanced the performance output with the reduction of NOx emission with noteworthy penalty in CO and HC emissions.
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TL;DR: In this article, the carbon nanomaterials; graphene oxide (GO), graphene nanoplatelets (GNPs), and multi-walled carbon nanotubes (MWCNTs) were mixed with 60% (by volume) jatropha methyl ester and 40% n-butanol fuel (JME40B) to examine the performance and emission characteristics of a diesel engine.
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TL;DR: In this article, the performance and combustion characteristics of B20 as almost in line with those of diesel fuel trend were investigated and the conclusion was made that B20 being most suitable blend of other blends and it is substitute of diesel which will reduce diesel consumption by 20%.
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TL;DR: In this paper, a trilateral analysis of spray characteristics, combustion, and emissions of a high-speed four-stroke diesel engine running on Jatropha oil (JO) in two cases of preheated and unpreheated in comparison to diesel fuel was investigated and carried out.
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TL;DR: Vegetable oils are always considered as the potential sources since the renewable and alternative fuels have been being paid attention by all countries in the world based on the strategies as mentioned in this paper,...
Abstract: Vegetable oils are always considered as the potential sources since the renewable and alternative fuels have been being paid attention by all countries in the world based on the strategies ...
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TL;DR: In this article, non-edible oils namely pumpkin seed oil and Moringa oleifera oil were converted into methyl ester of Pumpkin seed oil using transesterification process.
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TL;DR: In this article, an improved thermodynamic model for thermodynamic parameters is developed to investigate the cold start ability of diesel engines, such as gas leakage, heat loss and clearance volume.
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TL;DR: In this paper, the authors compared the combustion and emission of different blend fuels with diesel and found that diesel with original injection timing and a suitable delay can simultaneously reduce the NOx, soot and UFPs emissions in the whole load range.
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TL;DR: In this article, the results of studies of the integral toxicity of exhaust gases of a diesel engine operating on natural gas and alcohol emulsions are presented, and the regimes characterizing the specific toxicity of diesel engine under its operating conditions were determined, and emissions of toxic components on these regimes were determined taking into account their weight coefficients.
Abstract: The results of studies of the integral toxicity of exhaust gases of a diesel engine operating on natural gas and alcohol emulsions are presented. At the same time, the regimes characterizing the specific toxicity of a diesel engine under its operating conditions were determined, and emissions of toxic components on these regimes were determined taking into account their weight coefficients. The results of research specific toxic diesel exhaust toxicity indicators, in accordance with the requirements of UNECE Regulation No. 49, show that when a diesel engine operates on natural gas with exhaust gas recirculation and an ethanol-fuel emulsion, the content of nitrogen oxides (NOx) and carbon dioxide (CO) in the exhaust gases conforms to "EURO 3", particulate matter – "EURO 5", total hydrocarbons (CHx) – "EURO 2". When the diesel engine is running on a methanol-fuel emulsion, the content of NOx, СНx and CO in the exhaust gases complies with the standards "EURO 3", particulate matter – "EURO 5".
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TL;DR: In this paper, the effect of Di-Methyl-Ether (DME) as a cetane improver on neat cashew nut shell biodiesel (CBD100) was investigated.
Abstract: This study details the effect of the Di-Methyl-Ether(DME) as a cetane improver on neat cashew nut shell biodiesel (CBD100) to assess the emission and performance engine characteristics. Four fuels,...
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TL;DR: In this paper, the feasibility of fuelling biodiesel derived from water hyacinth in a compression ignition engine was examined in a single cylinder diesel engine at constant speed (1500 rev/min) for its performance, combustion and emission characteristics.
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TL;DR: In this paper, the relationship between the spray parameters of used bio-oils including spray penetration (S) and cone angle (α), and preheating temperature compared to fossil diesel fuel was conducted.
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TL;DR: In this article, the effect of butanol as an oxygenated additive to lower carbon monoxide, smoke, nitrogen oxide and hydrocarbon emissions and to improve the performance aspects of Calophyllum inophyllium (Punnai) biodiesel was examined.
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TL;DR: In this paper, an experimental study was conducted to examine the operation characteristics of an orange peel oil biodiesel (BD100) along with water as an oxygenated additive in various volume fractions.
Abstract: This work investigates the experimental study to examine the operation characteristics of an orange peel oil biodiesel (BD100) along with water as an oxygenated additive in various volume fractions. Hard water is mixed into 100% of BD100 at 4 and 8% volume. Span 80 was employed as a nonionic surfactant, which emulsifies water into biodiesel. The experimental investigation on diesel engine reveals that the addition of water to BD100 resulted in enhancement of brake thermal efficiency (BTE) with a reduction in brake specific fuel consumption (BSFC). The tested emission parameters such as CO, HC, NOx and smoke were decreased by 11.4, 9.89, 3.36 and 5.14% for BD94W4S2 (94% volume of biodiesel) + (4% volume of water) + (2% volume of surfactant) and 12.22, 10.11, 4.85 and 6.18% for BD90W8S2 (90% volume of biodiesel) + (8% volume) + (2% volume) respectively when compared to BD100. Further, the cylinder pressure and heat release rate and were enhanced by adding water to base fuel (BD100). Overall, improvement in ignition characteristics of the engine was finer by adding, 4 and 8% volume of water to BD100 on account of its chemical properties.