scholarly journals Experimental Investigation of Diesel Engine Performance, Combustion and Emissions Using a Novel Series of Dioctyl Phthalate (DOP) Biofuels Derived from Microalgae

Energies ◽  
2019 ◽  
Vol 12 (10) ◽  
pp. 1964 ◽  
Author(s):  
Farhad M. Hossain ◽  
Md. Nurun Nabi ◽  
Md. Mostafizur Rahman ◽  
Saiful Bari ◽  
Thuy Chu Van ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Diesel Fuel ◽  
Chemical Properties ◽  
Engine Performance ◽  
Dioctyl Phthalate ◽  
Indicated Mean Effective Pressure ◽  
Test Study ◽  
Physico Chemical ◽  
Peak Cylinder Pressure ◽  
Blended Fuels

Physico-chemical properties of microalgae biodiesel depend on the microalgae species and oil extraction method. Dioctyl phthalate (DOP) is a clear, colourless and viscous liquid as a plasticizer. It is used in the processing of polyvinyl chloride (PVC) resin and polymers. A new potential biofuel, hydrothermally liquefied microalgae bio-oil can contain nearly 11% (by mass) of DOP. This study investigated the feasibility of using up to 20% DOP blended in 80% diesel fuel (v/v) in an existing diesel engine, and assessed the performance and exhaust emissions. Despite reasonable differences in density, viscosity, surface tension, and boiling point, blends of DOP and diesel fuel were found to be entirely miscible and no separation was observed at any stage during prolonged miscibility tests. The engine test study found a slight decrease in peak cylinder pressure, brake, and indicated mean effective pressure, indicated power, brake power, and indicated and brake thermal efficiency with DOP blended fuels, where the specific fuel consumption increased. This is due to the presence of 16.4% oxygen in neat DOP, responsible for the relatively lower heating value, compared to that of diesel. The emission tests revealed a slight increase in nitrogen oxides (NOx) and carbon monoxide (CO) emissions from DOP blended fuels. However, particulate matter (PM) emissions were lower from DOP blended fuels, although some inconsistency in particle number (PN) was present among different engine loads.

scholarly journals An investigation of effect of biodiesel and aviation fuel jeta-1 mixtures performance and emissions on diesel engine

2014 ◽  
Vol 18 (1) ◽  
pp. 239-247 ◽  
Author(s):  
Hasan Yamik
Keyword(s):  
Diesel Engine ◽  
Diesel Fuel ◽  
Chemical Properties ◽  
Engine Performance ◽  
Combustion Efficiency ◽  
Aviation Fuel ◽  
Aviation Industry ◽  
Performance And Emission ◽  
Performance And Emissions ◽  
Biodiesel Fuels

Biodiesel is an alternative fuel for diesel engines which doesn?t contain pollutants and sulfur; on the contrary it contains oxygen. In addition, both physical and chemical properties of sunflower oil methyl ester (SME) are identical to diesel fuel. Conversely, diesel and biodiesel fuels are widely used with some additives to reduce viscosity, increase the amount of cetane, and improve combustion efficiency. This study uses diesel fuel, SME and its mixture with aviation fuel JetA-1 which are widely used in the aviation industry. . Fuel mixtures were used in 1-cylinder, 4-stroke diesel engine under full load and variable engine speeds. In this experiment, engine performance and emission level are investigated. As a conclusion, as the JetA-1 ratio increases in the mixture, lower nitrogen oxide (NOx) emission is measured. Also, specific fuel consumption is lowered.

scholarly journals Experimental investigation on cyclic variability, engine performance and exhaust emissions in a diesel engine using alcohol-diesel fuel blends

2017 ◽  
Vol 21 (1 Part B) ◽  
pp. 581-589 ◽  
Author(s):  
Samet Gurgen ◽  
Bedir Unver ◽  
İsmail Altin
Keyword(s):  
Diesel Engine ◽  
Diesel Fuel ◽  
Engine Speed ◽  
Load Condition ◽  
Engine Performance ◽  
Exhaust Emission ◽  
Cyclic Variability ◽  
Fuel Blends ◽  
Indicated Mean Effective Pressure ◽  
Cycle Variation

This paper investigates the impacts of using n-butanol-diesel fuel and ethanol-diesel fuel blends on engine performance, exhaust emission, and cycle-by-cycle variation in a Diesel engine. The engine was operated at two different engine speed and full load condition with pure diesel fuel, 5% and 10% (by vol.) ethanol and n-butanol fuel blends. The coefficient of variation of indicated mean effective pressure was used to evaluate the cyclic variability of n-butanol-diesel fuel and ethanol-diesel fuel blends. The results obtained in this study showed that effective efficiency and brake specific fuel consumption generally increased with the use of the n-butanol-diesel fuel or ethanol-diesel fuel blends with respect to that of the neat diesel fuel. The addition of ethanol or n-butanol to diesel fuel caused a decrement in CO and NOx emissions. Also, the results indicated that cycle-by-cycle variation has an increasing trend with the increase of alcohol-diesel blending ratio for all engine speed. An increase in cyclic variability of alcohol-diesel fuel blends at low engine speed is higher than that of high engine speed.

Preparation, Characterization and Engine Performance Characteristics of Used Cooking Sunflower Oil Based Bio-Fuels for a Diesel Engine

2014 ◽  
Vol 984-985 ◽  
pp. 913-923 ◽  
Author(s):  
Sankar Karthikumar ◽  
V. Ragavanandham ◽  
S. Kanagaraj ◽  
R. Manikumar ◽  
A. Asha ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Specific Gravity ◽  
Diesel Fuel ◽  
Sunflower Oil ◽  
Engine Performance ◽  
Fuel Properties ◽  
Performance Characteristics ◽  
Experimental Results ◽  
Single Cylinder ◽  
Blended Fuels

This paper deals on bio-fuel, consisting of used sunflower oil and transesterified - used sunflower oil blended with diesel. They are prepared and tested as a fuel in a direct injection (DI) single cylinder four stroke diesel engine. The main fuel properties of these fuels are measured, the engine performance characteristics are investigated and compared with that of diesel fuel. Fuels are separately prepared, blended and tested for determining the characteristics and combustion in a single cylinder diesel engine. The main fuel properties such as the specific gravity, density, flash and fire points of the blended fuels are measured. The engine performance is investigated and compared with that of diesel fuel. The experimental results showed that the specific gravity of the hybrid bio-fuels is decreased and close to that of diesel fuel. The experimental results also showed that the engine efficiency is closer to the values obtained from the diesel fuel. It is found that among the various blends, transesterifed used sunflower oil with diesel, gives better efficiency. In addition it is found that, the blend of diesel with used sunflower oil gives the lowest fuel consumption as compared to that of other blended fuels. Nomenclatures w1- weight of specific gravity bottle (g) w2- weight of specific gravity bottle + water (g) w3- weight of specific gravity bottle + sample (g)

scholarly journals Effects of Ethanol–Diesel on the Combustion and Emissions from a Diesel Engine at a Low Idle Speed

2020 ◽  
Vol 10 (12) ◽  
pp. 4153 ◽  
Author(s):  
Ho Young Kim ◽  
Jun Cong Ge ◽  
Nag Jung Choi
Keyword(s):  
Diesel Engine ◽  
Diesel Fuel ◽  
Direct Injection ◽  
Maximum Heat ◽  
Idle Speed ◽  
Indicated Mean Effective Pressure ◽  
Combustion Duration ◽  
Mean Size ◽  
Maximum Heat Release ◽  
Blended Fuels

In this study, detailed experiments were conducted on the combustion and exhaust characteristics of ethanol–diesel blended fuels. The four-stroke four-cylinder common-rail direct injection diesel engine was used. The experiment was carried out at 750 rpm at a low speed idle, and a 40 Nm engine load was applied to simulate the operation of the accessories during the low idle operation of the actual vehicles. The test fuels were four types of ethanol-blended fuel. The ethanol blending ratios were 0% (DE_0) for pure diesel, and 3% (DE_3), 5% (DE_5) and 10% (DE_10) for 3%, 5% and 10% ethanol mixtures (by vol.%). Blending ethanol with diesel fuel increased the maximum combustion pressure by up to 4.1% compared with that of pure diesel fuel, and the maximum heat release rate increased by 13.5%. The brake specific fuel consumption (BSFC) increased, up to 5.9%, as the ethanol blending ratio increased, while the brake thermal efficiency (BTE) for diesel-ethanol blended fuels remained low, and was maintained at 23.8%. The coefficient of variation (COV) of the indicated mean effective pressure (IMEP) was consistently lower than 1% when ethanol was blended. The blending of ethanol increased the ignition delay from a 12.0 degree crank angle (°CA) at DE_0 to 13.7 °CA at DE_10, and the combustion duration was reduced from 21.5 °CA at DE_0 to 20.8 °CA at DE_10. When ethanol blending was applied, nitrogen oxides (NOx) reduced to 93.5% of the level of pure diesel fuel, the soot opacity decreased from 5.3% to 3% at DE_0, and carbon monoxide increased (CO) by 27.4% at DE_10 compared with DE_0. The presence of hydrocarbon (HC) decreased to 50% of the level of pure diesel fuel, but increased with a further increase in the ethanol blending ratio. The mean size of the soot particulates was reduced by 26.7%, from 33.9 nm for pure diesel fuel, DE_0, to 24.8 nm for DE_10.

scholarly journals Thermal Performance of Compression Ignition Engine Using High Content Biodiesels: A Comparative Study with Diesel Fuel

2021 ◽  
Vol 13 (14) ◽  
pp. 7688
Author(s):  
Asif Afzal ◽  
Manzoore Elahi M. Soudagar ◽  
Ali Belhocine ◽  
Mohammed Kareemullah ◽  
Nazia Hossain ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Diesel Fuel ◽  
Fatty Acid Content ◽  
Engine Performance ◽  
Waste Cooking Oil ◽  
Gas Temperature ◽  
Compression Ignition Engine ◽  
Brake Thermal Efficiency ◽  
Acid Oil ◽  
Exhaust Gas Temperature

In this study, engine performance on thermal factors for different biodiesels has been studied and compared with diesel fuel. Biodiesels were produced from Pongamia pinnata (PP), Calophyllum inophyllum (CI), waste cooking oil (WCO), and acid oil. Depending on their free fatty acid content, they were subjected to the transesterification process to produce biodiesel. The main characterizations of density, calorific range, cloud, pour, flash and fire point followed by the viscosity of obtained biodiesels were conducted and compared with mineral diesel. The characterization results presented benefits near to standard diesel fuel. Then the proposed diesel engine was analyzed using four blends of higher concentrations of B50, B65, B80, and B100 to better substitute fuel for mineral diesel. For each blend, different biodiesels were compared, and the relative best performance of the biodiesel is concluded. This diesel engine was tested in terms of BSFC (brake-specific fuel consumption), BTE (brake thermal efficiency), and EGT (exhaust gas temperature) calculated with the obtained results. The B50 blend of acid oil provided the highest BTE compared to other biodiesels at all loads while B50 blend of WCO provided the lowest BSFC compared to other biodiesels, and B50 blends of all biodiesels provided a minimum % of the increase in EGT compared to diesel.

Performance Investigation of a Four Stroke Diesel Engine, Using Water-Based Ferrofluid as an Additive

2011 ◽  
Author(s):  
F. Daneshvar ◽  
N. Jahani ◽  
M. B. Shafii
Keyword(s):  
Experimental Study ◽  
Magnetic Nanoparticles ◽  
Diesel Engine ◽  
Diesel Fuel ◽  
Engine Performance ◽  
Brake Specific Fuel Consumption ◽  
Engine Exhaust ◽  
Brake Thermal Efficiency ◽  
Diesel Fuels ◽  
Water Based

In this experimental study, a four stroke diesel engine was conducted to investigate the effect of adding water-based ferrofluid to diesel fuel on engine performance. To our knowledge, Magnetic nanoparticles had not been used before. To this end, emulsified diesel fuels of 0, 0.4, and 0.8 water-based ferrofluid/Diesel ratios by volume were used as fuel. The ferrofluid used in this study was a handmade water-based ferrofluid prepared by the authors. The results show that adding water-based ferrofluid to diesel fuel has a perceptible effect on engine performance, increasing the brake thermal efficiency relatively up to 12%, and decreasing the brake specific fuel consumption relatively up to 11% as compared to diesel fuel. In addition, the results indicate that increasing ferrofluid concentration will magnify the results. Furthermore, it was found that magnetic nanoparticles can be collected at the engine exhaust using magnetic bar.

scholarly journals THE EFFECT OF DIESEL-BIODIESEL BLENDS ON THE PERFORMANCE AND EXHAUST EMISSIONS OF A DIRECT INJECTION OFF-ROAD DIESEL ENGINE

Transport ◽  
2014 ◽  
Vol 29 (4) ◽  
pp. 440-448 ◽  
Author(s):  
Tomas Mickevičius ◽  
Stasys Slavinskas ◽  
Slawomir Wierzbicki ◽  
Kamil Duda
Keyword(s):  
Diesel Engine ◽  
Diesel Fuel ◽  
Direct Injection ◽  
Engine Performance ◽  
Exhaust Emissions ◽  
Bench Test ◽  
Maximum Pressure ◽  
Cylinder Pressure ◽  
Biodiesel Blends ◽  
Performance And Emission

This paper presents a comparative analysis of the diesel engine performance and emission characteristics, when operating on diesel fuel and various diesel-biodiesel (B10, B20, B40, B60) blends, at various loads and engine speeds. The experimental tests were performed on a four-stroke, four-cylinder, direct injection, naturally aspirated, 60 kW diesel engine D-243. The in-cylinder pressure data was analysed to determine the ignition delay, the Heat Release Rate (HRR), maximum in-cylinder pressure and maximum pressure gradients. The influence of diesel-biodiesel blends on the Brake Specific Fuel Consumption (bsfc) and exhaust emissions was also investigated. The bench test results showed that when the engine running on blends B60 at full engine load and rated speed, the autoignition delay was 13.5% longer, in comparison with mineral diesel. Maximum cylinder pressure decreased about 1–2% when the amount of Rapeseed Methyl Ester (RME) expanded in the diesel fuel when operating at full load and 1400 min–1 speed. At rated mode, the minimum bsfc increased, when operating on biofuel blends compared to mineral diesel. The maximum brake thermal efficiency sustained at the levels from 0.3% to 6.5% lower in comparison with mineral diesel operating at full (100%) load. When the engine was running at maximum torque mode using diesel – RME fuel blends B10, B20, B40 and B60 the total emissions of nitrogen oxides decreased. At full and moderate load, the emission of carbon monoxide significantly raised as the amount of RME in fuel increased.

Diesel engine performance at the intake of the hydrogen&air mixture

2021 ◽  
pp. 119-126
Author(s):  
Keyword(s):  
Diesel Engine ◽  
Diesel Fuel ◽  
Internal Combustion Engines ◽  
Fuel Efficiency ◽  
Experimental Studies ◽  
Motor Fuel ◽  
Engine Performance ◽  
Calorific Value ◽  
Hydrocarbon Emissions ◽  
The Difference

The prospects of using hydrogen as a motor fuel are noted. The problems that arise when converting a diesel engine to run on hydrogen are considered. The features of the organization of the working process of enginesrunning on hydrogen are analyzed. A method of supplying a hydrogenair mixture to a diesel engine is investigated. To supply hydrogen to the engine cylinders, it is proposed to use the Leader4M installation developed by TechnoHill Club LLC (Moscow). Experimental studies of a stationary diesel engine of the D245.12 S type with the supply of hydrogen at the inlet obtained at this installation are carried out. At the maximum power mode, the supply of hydrogen from this installation to the inlet of the diesel engine under study was 0.9 % by weight (taking into account the difference in the calorific value of oil diesel fuel and hydrogen). Such a supply of hydrogen in the specified mode made it possible to increase the fuel efficiency of the diesel engine and reduce the smoke content of exhaust gases, carbon monoxide and unburned hydrocarbon emissions. Keywords internal combustion engines; diesel engine; diesel fuel; hydrogen; hydrogenair mixture; fuel efficiency; exhaust gas toxicity indicators

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