scholarly journals Engine Performance, Emission and Combustion Characteristics of a Common-rail Diesel Engine Fuelled with Bioethanol as a Fuel Additive in Coconut Oil Biodiesel Blends

2014 ◽  
Vol 61 ◽  
pp. 1655-1659 ◽  
Author(s):  
H.G. How ◽  
H.H. Masjuki ◽  
M.A. Kalam ◽  
Y.H. Teoh
Keyword(s):  
Diesel Engine ◽  
Engine Performance ◽  
Coconut Oil ◽  
Combustion Characteristics ◽  
Common Rail ◽  
Fuel Additive ◽  
Biodiesel Blends

scholarly journals Experimental Investigation of Performance, Emission and Combustion Characteristics of a Common-Rail Diesel Engine Fuelled with Bioethanol as a Fuel Additive in Coconut Oil Biodiesel Blends

Energies ◽  
2019 ◽  
Vol 12 (10) ◽  
pp. 1954 ◽  
Author(s):  
Y.H. Teoh ◽  
K.H. Yu ◽  
H.G. How ◽  
H.-T. Nguyen
Keyword(s):  
Diesel Engine ◽  
Diesel Fuel ◽  
Specific Energy Consumption ◽  
Engine Performance ◽  
Coconut Oil ◽  
Combustion Characteristics ◽  
Common Rail ◽  
Fuel Additive ◽  
Load Range ◽  
Fuel Blend

In the present study, the effects of adding of bioethanol as a fuel additive to a coconut biodiesel-diesel fuel blend on engine performance, exhaust emissions, and combustion characteristics were studied in a medium-duty, high-pressure common-rail turbocharged four-cylinder diesel engine under different torque conditions. The test fuels used were fossil diesel fuels, B20 (20% biodiesel blend), B20E5 (20% biodiesel + 5% bioethanol blend), and B20E10 (20% biodiesel + 10% bioethanol blend). The experimental results demonstrated that there was an improvement in the brake specific energy consumption (BSEC) and brake thermal efficiency (BTE) of the blends at the expense of brake specific fuel consumption (BSFC) for each bioethanol blend. An increment in nitrogen oxide (NOx) across the entire load range, except at low load conditions, was found with a higher percentage of the bioethanol blend. Also, it was found that simultaneous smoke and carbon monoxide (CO) emission reduction from the baseline levels of petroleum diesel fuel is attainable by utilizing all types of fuel blends. In terms of combustion characteristics, the utilization of bioethanol blended fuels presented a rise in the peak in-cylinder pressure and peak heat release rate (HRR) at a low engine load, especially for the B20E10 blend. Furthermore, the B20E10 showed shorter combustion duration, which reduced by an average of 1.375 °CA compared to the corresponding baseline diesel. This study therefore showed that the B20E10 blend exhibited great improvements in the diesel engine, thus demonstrating that bioethanol is a feasible fuel additive for coconut biodiesel-diesel blends.

Effect of Ethanol-Coconut Oil Methyl Ester on the Performance, Emission and Combustion Characteristics of a High-Pressure Common-Rail DI Engine

2014 ◽  
Vol 663 ◽  
pp. 19-25 ◽  
Author(s):  
H.G. How ◽  
H.H. Masjuki ◽  
M.A. Kalam ◽  
Y.H. Teoh
Keyword(s):  
High Pressure ◽  
Methyl Ester ◽  
Direct Injection ◽  
Engine Performance ◽  
Coconut Oil ◽  
Combustion Characteristics ◽  
Common Rail ◽  
Brake Thermal Efficiency ◽  
Smoke Opacity ◽  
High Pressure Common Rail

The effects of using ethanol as additive to biodiesel-diesel blends on engine performance, emissions and combustion characteristics was investigated on a four-cylinder, turbocharged and high-pressure common-rail direct injection diesel engine. Three test fuels have been compared: baseline diesel, coconut oil methyl ester (CME) with 20% of biodiesel by volume (B20) and 5% of ethanol and 20% of CME by volume (B20E5). The tests were performed in steady state conditions at 2000 rpm with 25%, 50% and 75% load setting conditions. The results indicate that higher brake specific fuel consumption and brake thermal efficiency is observed when operating with B20 and B20E5 blend. B20E5 blend shows reduction in smoke opacity, CO and NOx emissions compared to baseline diesel fuel. In terms of combustion characteristics, B20E5 shows slightly higher in both of the peak pressure and peak of HRR at low engine load.

scholarly journals Comparative Analysis of Performance, Emission, and Combustion Characteristics of a Common Rail Direct Injection Diesel Engine Powered with Three Different Biodiesel Blends

Energies ◽  
2021 ◽  
Vol 14 (18) ◽  
pp. 5597
Author(s):  
K. M. V. Ravi Teja ◽  
P. Issac Prasad ◽  
K. Vijaya Kumar Reddy ◽  
N. R. Banapurmath ◽  
Manzoore Elahi M. Soudagar ◽  
...  
Keyword(s):  
High Pressure ◽  
Diesel Engine ◽  
Electronic Control Unit ◽  
Direct Injection ◽  
Engine Performance ◽  
Control Unit ◽  
Common Rail ◽  
Biodiesel Blends ◽  
Sustainable Solutions ◽  
Fuel Flexibility

Biodiesel is a renewable energy source which is gaining prominence as an alternative fuel over fossil diesel for different applications. Due to their higher viscosity and lower volatility, biodiesels are blended with diesel in various proportions. B20 blends are viable and sustainable solutions in diesel engines with acceptable engine performance as they can replace 20% fossil fuel usage. Biodiesel blends are slightly viscous as compared with diesel and can be used in common rail direct injection (CRDI) engines which provide high pressure injection using an electronic control unit (ECU) with fuel flexibility. In view of this, B20 blends of three biodiesels derived from cashew nutshell (CHNOB (B20)), jackfruit seed (JACKSOB (B20)), and Jamun seed (JAMNSOB (B20)) oils are used in a modified single-cylinder high-pressure-assisted CRDI diesel engine. At a BP of 5.2 kW, for JAMNSOB (B20) operation, BTE, NOx, and PP increased 4.04%, 0.56%, and 5.4%, respectively, and smoke, HC, CO, ID, and CD decreased 5.12%, 6.25%, 2.75%, 5.15%, and 6.25%, respectively, as compared with jackfruit B20 operation.

scholarly journals DIESEL ENGINE PERFORMANCE, EMISSION AND COMBUSTION CHARACTERISTICS WITH OPTIMIZED BLEND OF B25 METHYL ESTER OF MANGO SEED OIL

2020 ◽  
Author(s):  
K. Vijayaraj ◽  
A. Muruga Ganesan ◽  
C.G. Saravanan
Keyword(s):  
Diesel Engine ◽  
Methyl Ester ◽  
Vegetable Oils ◽  
Alternative Fuels ◽  
Seed Oil ◽  
Engine Performance ◽  
High Viscosity ◽  
Combustion Characteristics ◽  
Biodiesel Blends ◽  
Mango Seed

Oil based fuels worldwide have not just brought about the speedy consumption of available energy sources, yet have likewise caused extreme air pollution. The quests for a substitute fuel has prompted numerous findings because of which wide assortment of alternative fuels are available now. The current investigations have revealed the utilization of vegetable oils for engines as an option for diesel fuel. Since there is a restriction in using vegetable oils in diesel engines because of their high viscosity and low volatility. In the current work, mango seed oil is converted into respective methyl ester by transesterification process. Tests are conducted using different blends of methyl ester of mango seed oil with diesel in a diesel engine. The investigation consequences demonstrated that the MEMSO biodiesel has comparable qualities to that of diesel. The brake thermal efficiency and smoke are seen to be lower in case of MEMSO biodiesel blends than diesel. Then again, BSFC and NOx of MEMSO biodiesel blends are seen as higher than diesel. It is observed that the combustion characteristics of methyl ester of mango seed oil blends seem to be similar with that of the diesel. From this investigation, it is concluded that B25 as optimized blend and could be used as an alternative fuel in a diesel engine with no engine modifications

scholarly journals A Review on the Thermochemical Recycling of Waste Tyres to Oil for Automobile Engine Application

Energies ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 3837
Author(s):  
Mohammad I. Jahirul ◽  
Farhad M. Hossain ◽  
Mohammad G. Rasul ◽  
Ashfaque Ahmed Chowdhury
Keyword(s):  
Diesel Engine ◽  
Engine Performance ◽  
Calorific Value ◽  
High Viscosity ◽  
Combustion Efficiency ◽  
Fuel Additive ◽  
Pyrolysis Oil ◽  
Performance And Emission ◽  
Automobile Engines ◽  
Direct Use

Utilising pyrolysis as a waste tyre processing technology has various economic and social advantages, along with the fact that it is an effective conversion method. Despite extensive research and a notable likelihood of success, this technology has not yet seen implementation in industrial and commercial settings. In this review, over 100 recent publications are reviewed and summarised to give attention to the current state of global tyre waste management, pyrolysis technology, and plastic waste conversion into liquid fuel. The study also investigated the suitability of pyrolysis oil for use in diesel engines and provided the results on diesel engine performance and emission characteristics. Most studies show that discarded tyres can yield 40–60% liquid oil with a calorific value of more than 40 MJ/kg, indicating that they are appropriate for direct use as boiler and furnace fuel. It has a low cetane index, as well as high viscosity, density, and aromatic content. According to diesel engine performance and emission studies, the power output and combustion efficiency of tyre pyrolysis oil are equivalent to diesel fuel, but engine emissions (NOX, CO, CO, SOX, and HC) are significantly greater in most circumstances. These findings indicate that tyre pyrolysis oil is not suitable for direct use in commercial automobile engines, but it can be utilised as a fuel additive or combined with other fuels.

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