The Study about Combustion and Emission Characteristics of n-Butanol/Diesel Fuel Mixture

2014 ◽  
Vol 492 ◽  
pp. 335-340
Author(s):  
Jian Wu ◽  
Li Li Zhu ◽  
Zhan Cheng Wang ◽  
Bin Xu ◽  
Hong Ming Wang
Keyword(s):  
High Pressure ◽  
Diesel Engine ◽  
Diesel Fuel ◽  
Release Rate ◽  
Fuel Mixture ◽  
Emission Characteristics ◽  
Maximum Heat ◽  
Maximum Heat Release ◽  
Hc Emissions ◽  
Increasing Load

Experiment of fuel combustion and emission characteristics was carried on a turbocharged intercooled electronically controlled high pressure common rail diesel engine with n-butanol/diesel blends, then the results of experiment were compared and analyzed. The results show that with the adding of n-butanol, the maximum combustion pressure gradually increases and the maximum heat release rate gradually reduces; compared with diesel, CO emissions of the blends are slightly lower and decrease with the increasing load; HC emissions of the mixture fuel are higher and decrease first then increase with the increasing load; at 2000rpm, NOX emissions of the blends are a little lower than the pure diesel in small loads but higher in other loads, and increase with the adding of the load.

Emissions Characteristics of a Diesel Engine with GTL and Biodiesel Fuels

2014 ◽  
Vol 1008-1009 ◽  
pp. 995-1000
Author(s):  
Pi Qiang Tan ◽  
Shu Wang ◽  
Yuan Hu Zhi ◽  
Di Ming Lou
Keyword(s):  
Diesel Engine ◽  
Diesel Fuel ◽  
Emission Characteristics ◽  
Nox Emissions ◽  
Brake Specific Fuel Consumption ◽  
Biodiesel Blend ◽  
Hc Emissions ◽  
Gas To Liquids ◽  
Biodiesel Fuels ◽  
Co Emission

Emission characteristics of an electronic-controlled high pressure common-rail diesel engine with low-blend Gas-to-liquids (GTL) and low-blend biodiesel fuels are studied. Pure diesel fuel, G10 fuel (10% GTL blend with diesel fuel) and B10 fuel (10% biodiesel blend with diesel fuel) are used in this research. The results show that torque of the engine with pure diesel fuel is higher than G10 fuel, and B10 fuel is the lowest. Compared to the pure diesel fuel, the brake specific fuel consumption (BSFC) of the engine with G10 fuel decreases, but the B10 fuel increases slightly. Hydrocarbon (HC) emissions of the engine with G10 fuel or B10 fuel are lower than the pure diesel fuel, and the carbon monoxide (CO) emission increases slightly, and nitrogen oxides (NOx) emissions have no distinct change. Compared to the G10 fuel, the CO and HC emissions of the engine with B10 fuel are lower.

scholarly journals Effects Of Fe2O3 and Al2O3 Nanoparticle-Diesel Fuel Blends on the Combustion, Performance and Emission Characteristics of a Diesel Engine

2021 ◽  
Author(s):  
Mohammad Nouri ◽  
Amir Homayoon Meghdadi Isfahani ◽  
Alireza Shirneshan
Keyword(s):  
Diesel Engine ◽  
Heat Release ◽  
Heat Release Rate ◽  
Diesel Fuel ◽  
Release Rate ◽  
Emission Characteristics ◽  
Performance And Emission ◽  
Combustion Performance ◽  
Fuel Blends ◽  
Nanoparticle Additives

Abstract This research investigates the effects of the addition of Fe2O3 and Al2O3 nanoparticles (30, 60, and 90 ppm) and Fe2O3-Al2O3 hybrid nanoparticles to pure diesel fuel on the combustion, performance and emission characteristics of a diesel engine. The results indicated that fuel blends improved the combustion (in-cylinder pressure and heat release rate), performance (power, fuel consumption, and thermal and exergy efficiency), and emission characteristics of the engine. The results showed that the peak combustion pressure increased by 4% and the heat release rate was improved by 15% in comparison with pure diesel with the addition of the nanoparticles. Moreover, the rate of pressure rise increased by 18% compared to pure diesel with nanoparticle additives. Based on the results, the effects of Fe2O3 fuel blends on brake power, BTE, and CO emission were more than Al2O3 fuel blends, such that it increased power and thermal efficiency by 7.40 and 14%, respectively, and reduced CO emissions by 21.2%; moreover, the blends with Al2O3 nanoparticle additives in comparison with Fe2O3 nanoparticle blends showed a better performance in reducing BSFC (9%), NOx (23.9%), and SO2 (23.4%) emissions. Overall, the Fe2O3-Al2O3 hybrid fuel blend is the best alternative if the performance and emission characteristics of the engine are both considered.

Effects of Substitution Ratio on the Emission Characteristics of a Dual-Fuel Engine Fueled with Pilot Diesel Fuel and Methanol

2015 ◽  
Vol 1092-1093 ◽  
pp. 504-507
Author(s):  
Ya Chong Shen ◽  
Chun Hua Zhang ◽  
Gang Li ◽  
Jia Wang Zhou
Keyword(s):  
Diesel Engine ◽  
Diesel Fuel ◽  
Experimental Results ◽  
Constant Speed ◽  
Dual Fuel ◽  
Emission Characteristics ◽  
Turbocharged Diesel Engine ◽  
Intake Pipe ◽  
Substitution Ratio ◽  
Hc Emissions

Substitution ratio is an important parameter influencing on the performance of dual-fuel engine. In order to study the effects of substitution ratio on the emission characteristics of diesel/ methanol dual-fuel engine, a 6-cylinder turbocharged diesel engine was converted into a dual-fuel engine fueled with pilot diesel fuel and methanol. Methanol was injected into the intake pipe and ignited by pilot diesel fuel. Experiments were performed at a constant speed of 1400 r/min, and at three different engine loads of 40%, 60% and 100%. The experimental results indicate that CO and HC emissions of dual-fuel mode both increase significantly with the increase of substitution ratio, and are higher than those of diesel mode. Compared to diesel mode, dual-fuel mode generates lower NOx and smoke emissions. In addition, as substitution ratio increases, NOx and smoke emissions are decreased.

Influence of Dual Fuel Twin Injection on Diesel Engine Combustion and Emission Characteristics

2013 ◽  
Vol 768 ◽  
pp. 206-212 ◽  
Author(s):  
K. Senthil Kumar ◽  
R. Thundil Karuppa Raj
Keyword(s):  
Diesel Engine ◽  
Diesel Fuel ◽  
Release Rate ◽  
Exhaust Emission ◽  
Dual Fuel ◽  
Emission Characteristics ◽  
Pilot Injection ◽  
Crank Angle ◽  
Engine Combustion ◽  
Pilot Fuel

The objective of this study is to investigate the feasibility of two-stage injection on combustion and exhaust emission characteristics in diesel (main fuel) ethanol (pilot fuel) fuelled single cylinder diesel engine. The pressure crank angle and net heat release rate diagrams revealed that increase in the ethanol pilot quantity causes an increase in the ignition delay in the pilot combustion and hence the main combustion due to diesel fuel is slightly influenced by the ethanol pilot fuel. The increase in the pilot injection decreases the NOx considerably. The concentration of soot emissions also decreases with increase in pilot injection. The CO emissions increases with increase in pilot injection and a slight increase in HC emission is observed.

Simulation Investigation about Combustion and Emission Characteristics of n-Butanol/Diesel Fuel Mixture on Diesel Engine

2014 ◽  
Vol 541-542 ◽  
pp. 763-768 ◽  
Author(s):  
Jian Wu ◽  
Hong Ming Wang ◽  
Li Li Zhu ◽  
Yang Hua
Keyword(s):  
Diesel Engine ◽  
Diesel Fuel ◽  
Combustion Process ◽  
Fuel Mixture ◽  
Calculation Model ◽  
Emission Characteristics ◽  
Test Results ◽  
Combustion Pressure ◽  
Indicator Diagram ◽  
Simulation Results

In this paper, combustion process was simulated on diesel engine with n-butanol/diesel blends in 3000 r/min, 300 Nm using AVL FIRE ESE Diesel. By comparison with indicator diagram, simulation results were consistent with the test results using pure diesel and 5%(volume of n-butanol) n-butanol/diesel blends. Using the calculation model combustion in cylinder is calculated burning B10(mass friction of n-butanol is 10%), B20 and B30 n-butanol /diesel mixture. The results show that the maximum combustion pressure and temperature gradually increases, and accumulated heat of release slightly reduces with the adding of n-butanol. BSFC increases, but indicated efficiency reduces. Mass friction of soot significantly reduce, and mass friction of NOx firstly decreases then increases with the adding of n-butanol. This will provide a basis to the research of n-butanol as substitute fuel.

Investigation of the Performance of a Diesel Engine Fueled by Biodiesel-Diesel Fuel Mixture With Addition of Nanoparticles

2017 ◽  
Author(s):  
Ahmed I. EL-Seesy ◽  
Ali K. Abdel-Rahman ◽  
Hamdy Hassan ◽  
Shinichi Ookawara ◽  
Meshack Hawi
Keyword(s):  
Diesel Engine ◽  
Dose Level ◽  
Diesel Fuel ◽  
Emission Reduction ◽  
Engine Performance ◽  
Fuel Mixture ◽  
Operating Conditions ◽  
Emission Characteristics ◽  
Engine Test ◽  
Performance And Emission

The current work presents the results of an experimental study that is conducted to investigate the effect of nanoparticles added to biodiesel-diesel fuel mixture. Nano-biodiesel-diesel mixture fuels were prepared by adding of multi-walled carbon nanotubes (MWCNTs). These nanoparticles were blended with biodiesel-diesel fuel in varying mass fractions using an ultrasonic stabilization. A diesel engine test rig was used to examine the effect of nanoparticles on engine performance and emission characteristics with a constant speed of 2500 rpm and different engine loads. The engine test results indicated that the biodiesel-diesel fuel blend slightly decreased the engine performance and increased its emission characteristics at all tested engine operating conditions. The use of nanoparticles was found to improve all engine performance parameters. Specifically, the maximum emission reduction was obtained at a dose level of 20 mg/l, where considerable emission reduction was observed; NOx by 14 %, CO by 30 %, and UHC by 34 %. Also, the best of both engine combustion characteristics and performance were reached at a dose level of 40–50 mg/l. Where the reduction in the brake specific fuel consumption was by 16 %, the increase in both the cylinder peak pressure Pmax, and maximum gross heat release rate dQg/dθmax. were 4 % and 1%, respectively. Finally, the recommended dose level to achieve a significant enhancement in all engine performance is 40 mg/l.

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.

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