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.

Tribological and emission characteristics of indirect ignition diesel engine fuelled with waste edible oil

2016 ◽  
Vol 68 (5) ◽  
pp. 554-560 ◽  
Author(s):  
De-Xing Peng
Keyword(s):  
Economic Growth ◽  
Diesel Engine ◽  
Diesel Fuel ◽  
Fossil Fuels ◽  
Fuel Injection ◽  
Engine Performance ◽  
Vital Role ◽  
Fuel Additive ◽  
Content Type ◽  
Lubricating Property

Purpose Energy is the prime mover of economic growth and is vital to the sustenance of a modern economy. Future economic growth depends heavily on the long-term availability of energy from sources that are affordable, accessible and environmentally friendly. Regulating the sulfur content in diesel fuel is expected to reduce the lubricity of these fuels, which may result in increased wear and damage of fuel injection systems in diesel engines. Design/methodology/approach The tribological properties of the biodiesels as additive in pure petro-diesel are studied by ball-on-ring wear tester to find optimal concentration, and the mechanism of the reduction of wear and friction will be investigated by optical microscopy. Findings Studies have shown that low concentrations of biodiesel blends are more effective as lubricants because of their superior polarity. Using biodiesel as a fuel additive in a pure petroleum diesel fuel improves engine performance and exhaust emissions. The high biodegradability and superior lubricating property of biodiesel when used in compression ignition engines renders it an excellent fuel. Originality/value This detailed experimental investigation confirms that biodiesel can substitute mineral diesel without any modification in the engine. The use of biofuels as diesel engine fuels can play a vital role in helping the developed and developing countries to reduce the environmental impact of fossil fuels.

scholarly journals UJI PRESTASI DAN EMISI DIESEL BERBAHAN BAKAR MINYAK NABATI MURNI UNTUK PEMBANGKITAN DAYA DI DAERAH TERPENCIL

Power Plant ◽  
2018 ◽  
Vol 5 (1) ◽  
pp. 18-23
Author(s):  
Redaksi Tim Jurnal
Keyword(s):  
Diesel Engine ◽  
Diesel Fuel ◽  
Specific Energy Consumption ◽  
Cetane Number ◽  
Coconut Oil ◽  
Calorific Value ◽  
Nox Emissions ◽  
Plant Oil ◽  
Significant Difference ◽  
Performance And Emissions

Pure Plant Oil (PPO) such as Pure Coconut Oil (PCO) and Pure Palm Oil (PPaO) could be a solution for electricity problem in remote areas in Indonesia. PCO and PPaO can be used as a fuel for diesel engine to produce electricity. This paper will compare and analyze the performance and emissions of the diesel power plant fueled with diesel fuel, PCO, and PPaO. For performance parameter, brake specific fuel consumption and thermal efficiency of diesel engine by using PPaO and PCO are higher than the diesel fuel, but the brake specific energy consumption are lower than the diesel fuel. That means diesel engine will be more efficient and have lower operational cost by using PPaO and PCO. For the emission parameters, CO2, CO, and CH emissions from PPaO and PCO are higher compared to diesel fuel. That means PPO have higher carbon emission than just using conventional diesel fuel. But, there are highly significant difference of less NOX emissions by using PCO and PPaO compared to the diesel fuel. That means it will be better using PPO because diesel engine has lack of high NOX emissions. These differences of diesel engine performance and emissions by PPaO, PCO, and diesel fuel are caused by the fuel characteristic differences such as cetane number, calorific value, and viscosity.

scholarly journals THE EFFECT OF FUEL ADDITIVE SO‐2E ON DIESEL ENGINE PERFORMANCE WHEN OPERATING ON DIESEL FUEL AND SHALE OIL

Transport ◽  
2006 ◽  
Vol 21 (2) ◽  
pp. 71-79 ◽  
Author(s):  
Gvidonas Labeckas ◽  
Arvydas Pauliukas ◽  
Stasys Slavinskas
Keyword(s):  
Diesel Engine ◽  
Diesel Fuel ◽  
Energy Content ◽  
Direct Injection ◽  
Engine Performance ◽  
Fuel Additive ◽  
Exhaust Gas ◽  
Shale Oil ◽  
Speed Range ◽  
Wide Speed Range

The purpose of this research is to perform comparative analysis of the effect of fuel additive SO‐2E on the economical and ecological parameters of a direct‐injection Diesel engine, operating on Diesel fuel and shale oil alternately. It was proved that multifunctional fuel additive SO‐2E applied in proportion 0,2 vol % is more effective for improving combustion of shale oil than Diesel fuel. At light operation range the treated shale oil savings based upon fuel energy content throughout wide speed range 1400–2000 min−1 reduce from 14,6–12,3MJ/kWh to 11,6–11,8 MJ/kWh or by 20,5–4,1 %. Maximum NO emission for treated Diesel fuel was reduced by 7,8–11,8 %, whereas NO2 simultaneously increased by 3,8–7,4 %. In the case of treated shale oil both harmful pollutants were reduced by 22,9–28,6 % and by 41,6–13,4 %, respectively. The exhaust gas opacity and CO emissions at the rated performance regime for both fuels were obtained a bit higher, whereas HC emission for treated shale oil increases 1,9 times and for Diesel fuel remains on the same level.

Impact of two-stage injection fuel quantity on engine-out responses of a common-rail diesel engine fueled with coconut oil methyl esters-diesel fuel blends

2019 ◽  
Vol 139 ◽  
pp. 515-529 ◽  
Author(s):  
H.G. How ◽  
Y.H. Teoh ◽  
H.H. Masjuki ◽  
H.-T. Nguyen ◽  
M.A. Kalam ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Diesel Fuel ◽  
Methyl Esters ◽  
Coconut Oil ◽  
Common Rail ◽  
Two Stage ◽  
Fuel 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.

ANALYSIS OF OXYGENATED COMPONENT (BUTYL ETHER) AND EGR EFFECT ON A DIESEL ENGINE

2010 ◽  
Vol 24 (15n16) ◽  
pp. 2844-2849 ◽  
Author(s):  
SEUNG-HUN CHOI ◽  
YOUNG-TAIG OH
Keyword(s):  
Diesel Engine ◽  
Diesel Fuel ◽  
Specific Energy Consumption ◽  
Engine Performance ◽  
Nox Emission ◽  
Exhaust Emission ◽  
Engine Fuel ◽  
Butyl Ether ◽  
Significant Difference ◽  
Blended Fuel

Potential possibility of the butyl ether (BE, oxygenates of di-ether group) was analyzed as an additives for a naturally aspirated direct injection diesel engine fuel. Engine performance and exhaust emission characteristics were analyzed by applying the commercial diesel fuel and oxygenates additives blended diesel fuels. Smoke emission decreased approximately 26% by applying the blended fuel (diesel fuel 80 vol-% + BE 20vol-%) at the engine speed of 25,000 rpm and with full engine load compared to the diesel fuel. There was none significant difference between the blended fuel and the diesel fuel on the power, torque, and brake specific energy consumption rate of the diesel engine. But, NOx emission from the blended fuel was higher than the commercial diesel fuel. As a counter plan, the EGR method was employed to reduce the NOx . Simultaneous reduction of the smoke and the NOx emission from the diesel engine was achieved by applying the BE blended fuel and the cooled EGR method.

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