Optimization of biodiesel percentage in fuel mixture and engine operating conditions for diesel engine performance and emission characteristics by Artificial Bees Colony Algorithm

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.

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Multi-response optimization of diesel engine operating parameters running with water-in-diesel emulsion fuel

Thermal Science ◽

10.2298/tsci160404220v ◽

2017 ◽

Vol 21 (1 Part B) ◽

pp. 427-439 ◽

Cited By ~ 15

Author(s):

Suresh Vellaiyan ◽

Koduvayur Amirthagadeswaran

Keyword(s):

Diesel Engine ◽

Chemical Properties ◽

Engine Performance ◽

Operating Conditions ◽

Operating Parameters ◽

Second Phase ◽

Emission Characteristics ◽

Sorbitan Monolaurate ◽

Promising Alternative ◽

Performance And Emission

Water-in-diesel emulsion fuel is a promising alternative diesel fuel, which has the potential to promote better performance and emission characteristics in an existing Diesel engine without engine modification and added cost. The key factor that has to be focused with the introduction of such fuel in existing Diesel engine is desired engine-operating conditions. The present study attempts to address the previous issue with two-phases of experiments. In the first phase, stable water-in-diesel emulsion fuels (5, 10, 15, and 20 water-in-diesel) are prepared and their stability period and physico-chemical properties are measured. In the second phase, experiments are conducted in a single cylinder, 4-stroke Diesel engine with pre-pared water-in-diesel emulsion fuel blends based on L16 orthogonal array suggested in Taguchi?s quality control concept to record the output responses (perormance and emission levels). Based on signal-to-noise ratio and grey relational analysis, optimal level of operating factors are determined to obtain better response and verified through confirmation experiments. A statistical analysis of variance is applied to measure the significance of individual operating parameters on overall engine performance. Results indicate that the emulsion fuel prepared by Sorbitan monolaurate surfactant at high stirrer speed endows with better emulsion stability and acceptable variation in physicochemical properties. Results of this study also reveal that the optimal parametric setting effectively improves the combustion, performance, and emission characteristics of Diesel engine.

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A novel alternative fuel mixture (diesel–biodiesel–pentanol) for the existing unmodified direct injection diesel engine: performance and emission characteristics

Transactions of the Canadian Society for Mechanical Engineering ◽

10.1139/tcsme-2019-0049 ◽

2020 ◽

Vol 44 (1) ◽

pp. 1-9 ◽

Cited By ~ 19

Author(s):

Prabhu Appavu ◽

Venkata Ramanan Madhavan ◽

Harish Venu ◽

Jayaprabakar Jayaraman

Keyword(s):

Diesel Engine ◽

Direct Injection ◽

Engine Performance ◽

Fuel Mixture ◽

Combustion Efficiency ◽

Emission Characteristics ◽

Performance And Emission ◽

Direct Injection Diesel Engine ◽

Noticeable Improvement ◽

Smoke Opacity

The present study investigated the performance and emission characteristics of a single cylinder direct injection diesel engine fuelled with diesel – jatropha biodiesel – pentanol blends. The test fuels used for the experiment include diesel fuel (Diesel), 80% diesel (v/v) – 20% jatropha biodiesel (v/v) (D80J20), 70% diesel (v/v) – 20% jatropha biodiesel (v/v) – 10% pentanol (v/v) (D70J20P10), and 60% diesel (v/v) – 20% jatropha biodiesel (v/v) – 20% pentanol (v/v) (D60J20P20). Studied performance characteristics include brake specific fuel consumption and torque, while emission characteristics include carbon monoxide, nitrogen oxides, and smoke opacity. Experimental results revealed that the addition of pentanol influenced a reduction in brake power and torque with a noticeable improvement in engine exhaust emissions. To conclude, the addition of pentanol (20%, v/v) to diesel–jatropha blends resulted in lowered CO, NOx, and smoke opacity by 41.76%, 27.6%, and 32.4%, respectively, because of improved oxygen content of the resulting ternary mixture and improved combustion efficiency.

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Performance and Emission Study on Diesel Engine using Waste Cooking Oil with Methanol as Additive

International Journal of Vehicle Structures and Systems ◽

10.4273/ijvss.10.5.11 ◽

2018 ◽

Vol 10 (5) ◽

Author(s):

R.A. RaajKumar ◽

S. Sriram ◽

A.S. DivakarShetty ◽

Sandeep Koundinya

Keyword(s):

Diesel Engine ◽

Fossil Fuels ◽

Engine Performance ◽

Fuel Mixture ◽

Waste Cooking Oil ◽

Emission Characteristics ◽

Oxides Of Nitrogen ◽

Performance And Emission ◽

Cooking Oil ◽

Emission Study

As the years are passing by, the number of vehicles used for transportation is increasing. Due to this the environment is degrading and also the fossil fuels are depleting. This paper presents the performance and emission study on diesel engine using waste cooking oil with methanol as additive in various proportions. The properties such as the flash point, fire point, kinematic viscosity and the calorific values of the blends with and without additive are determined. Then all the biodiesel blends are used as fuel separately in the diesel engine. The engine performance as well as emission characteristics have been determined and compared at different blends. The blends with additive showed better properties and reduction in emission characteristics compared to diesel. The emission of CO is decreasing with increasing waste cooking oil and methanol quantity in the blends. Fuel consumption was more for the higher percentage blends with respect to increasing brake power. The emission of un-burnt hydrocarbon and oxides of nitrogen are reduced significantly with addition of methanol to fuel mixture due to higher oxygen and heat of vaporization.

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