Behavior of Diesel Combustion and Exhaust Emission with Neat Diesel Fuel and Diesel-Biodiesel Blends

2004 ◽  
Author(s):  
Md. Nurun Nabi ◽  
Mhia Md. Zaglul Shahadat ◽  
Md. Shamimur Rahman ◽  
Mohd. Rafiqul Alam Beg
Keyword(s):  
Diesel Fuel ◽  
Exhaust Emission ◽  
Diesel Combustion ◽  
Biodiesel Blends

Production and Analytical Comparison of Atomization Characteristics for Ternary Blends of Biodiesel

2017 ◽  
Vol 8 (4) ◽  
Author(s):  
K. Sudalaiyandi ◽  
K.S. Amirthagadeswaran ◽  
P. Selvan
Keyword(s):  
Diesel Fuel ◽  
Edible Oils ◽  
Exhaust Emission ◽  
Ternary Blends ◽  
Rubber Seed Oil ◽  
Binary Blends ◽  
Rubber Seed ◽  
Biodiesel Blends ◽  
Fuel Atomization ◽  
Atomization Characteristics

By the plenty usage of diesel fuel in automobiles, it is necessary to switch over to the alternate fuel such as biodiesel. Generally non edible oils are blended with diesel after the esterification process. But here ternary biodiesel blends with diesel fuel produce almost equal drop size when compared with some binary blends with large quantities of diesel. The ternary biodiesel blends give less amount exhaust emission than the binary blends with diesel. In this work, biodiesel is produced from linseed and rubber seed oil by trans-esterification process and then the fuel atomization characteristics have been determined, The sauter mean diameter of atomization is also computed by analytically. The ternary blends having 90% diesel and 5% linseed biodiesel, 5% rubber seed biodiesel and also 80% diesel, 10% linseed biodiesel and 10% rubber seed biodiesel are observed to give comparatively similar atomization characteristics of diesel.

Engine Performance with Diesel-Biodiesel Blends Fuel and Emission Characteristics

2020 ◽  
Vol 38 (5A) ◽  
pp. 779-788
Author(s):  
Marwa N. Kareem ◽  
Adel M. Salih
Keyword(s):  
Sulfur Content ◽  
Diesel Fuel ◽  
Engine Performance ◽  
Esterification Reaction ◽  
Biodiesel Fuel ◽  
Exhaust Gas ◽  
Gas Temperature ◽  
Biodiesel Blends ◽  
Fuel Blends ◽  
Hc Emissions

In this study, the sunflowers oil was utilized as for producing biodiesel via a chemical operation, which is called trans-esterification reaction. Iraqi diesel fuel suffers from high sulfur content, which makes it one of the worst fuels in the world. This study is an attempt to improve the fuel specifications by reducing the sulfur content of the addition of biodiesel fuel to diesel where this fuel is free of sulfur and has a thermal energy that approaches to diesel.20%, 30% and 50% of Biodiesel fuel were added to the conventional diesel. Performance tests and pollutants of a four-stroke single-cylinder diesel engine were performed. The results indicated that the brake thermal efficiency a decreased by (4%, 16%, and 22%) for the B20, B30 and B50, respectively. The increase in specific fuel consumption was (60%, 33%, and 11%) for the B50, B30, and B20 fuels, respectively for the used fuel blends compared to neat diesel fuel. The engine exhaust gas emissions measures manifested a decreased of CO and HC were CO decreased by (13%), (39%) and (52%), and the HC emissions were lower by (6.3%), (32%), and (46%) for B20, B30 and B50 respectively, compared to diesel fuel. The reduction of exhaust gas temperature was (7%), (14%), and (32%) for B20, B30 and B50 respectively. The NOx emission increased with the increase in biodiesel blends ratio. For B50, the raise was (29.5%) in comparison with diesel fuel while for B30 and B20, the raise in the emissions of NOx was (18%) and...

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.

scholarly journals Multizone Model Study for DI Diesel Engine Running on Diesel-Ethanol-Biodiesel Blends of High Ethanol Fraction

2018 ◽  
Vol 15 (3) ◽  
pp. 5451-5467 ◽  
Author(s):  
D. B. Hulwan ◽  
S. V. Joshi
Keyword(s):  
Diesel Engine ◽  
Model Prediction ◽  
Diesel Fuel ◽  
Equivalence Ratio ◽  
Air Entrainment ◽  
Biodiesel Blends ◽  
Di Diesel Engine ◽  
Fuel Evaporation ◽  
High Ethanol ◽  
Ethanol Fraction

A multizone combustion model for closed cycle of a DI diesel engine is developed to interpret the experimental investigations on the utilization of diesel-ethanol-biodiesel blends of high ethanol fraction (DEB blends). A computer-based programming for engine process simulation is developed in MATLAB. The model is validated with the experimental values of cylinder pressure and heat release rate. Important information related to fuel injection and combustion inside the combustion chamber, is revealed through the model prediction which is normally difficult to get from the experiments. Model prediction shows that the rate of fuel evaporation is higher for DEB blends, than diesel fuel at any instant of time. The fuel combustion is started late for DEB blends compared to diesel fuel, however, once the combustion is started the burning rate is higher than the diesel fuel. The droplet size (Sauter mean diameter) is decreased for DEB blends which indicate improved fuel atomization. The mean temperature in the zone is significantly lower for DEB blends compared to diesel fuel. The equivalence ratio in the zone is decreased for DEB blends proving that engine runs leaner. The equivalence ratio trend is not uniform as it depends on the combination of the rate of fuel evaporation, rate of air entrainment and rate of burning. Soot density is remarkably decreased, and NOx formation is also drastically reduced for DEB blends at different instant of time. The predictions help to interpret the experimental results for DEB blends and its comparison with diesel fuel.

Impacts of N, N'-diphenyl-1, 4-phenylenediamine (DPPD) Antioxidant Additive in Jatropha Biodiesel Blends to Reduce NOx Emission of a Multi Cylinder Vehicle Type Diesel Engine

2013 ◽  
Vol 774-776 ◽  
pp. 784-790
Author(s):  
S.M. Palash ◽  
M.A. Kalam ◽  
H.H. Masjuki ◽  
B.M. Masum
Keyword(s):  
Diesel Engine ◽  
Engine Performance ◽  
Exhaust Emission ◽  
Antioxidant Additive ◽  
Biodiesel Blends ◽  
Market Expansion ◽  
Treatment Techniques ◽  
Pre Treatment ◽  
Biodiesel Fuels ◽  
Full Throttle

To meet stringent exhaust emission norms worldwide, various exhaust pre-treatment and post-treatment techniques have been employed in modern engines. Using antioxidant additives in biodiesel fuels is a promising and effective NOx reduction technology. Non-edible jatropha oil based methyl ester was produced and blended with conventional diesel. Five fuel samples (Diesel, JB5, JB5DPPD0.15%, JB15 and JB15DPPD0.15%) were tested for their use as substitute fuel for a radiator-cooled four cylinder diesel engine. Experiment results show that DPPD antioxidant additive could be reduced NOx emission significantly with slight penalty on engine performance as well as CO and HC emission. However, when compared to diesel combustion the emissions of HC and CO were found nearly same or below. By addition of 0.15% (m) DPPD additive in JB5 and JB15 reduction of NOx emission were 12.68% and 13.36 % compared to biodiesel blends without additive at full throttle position. As conclusion, JB5 and JB15 with addition of 0.15% (m) can be used in four cylinder diesel engine to reduce NOx and consequently overcome the barrier to market expansion of biodiesel fuels.

Lubricating Properties of Diesel Fuel and Hydrogenated Vegetable Oil with Palm Oil Biodiesel Blends Using HFRR Method

2021 ◽  
Author(s):  
Nur Allif Fathurrahman ◽  
Ahmad Syihan Auzani ◽  
Rizal Zaelani ◽  
Riesta Anggarani ◽  
Lies Aisyah ◽  
...  
Keyword(s):  
Vegetable Oil ◽  
Palm Oil ◽  
Diesel Fuel ◽  
Biodiesel Blends ◽  
Hydrogenated Vegetable Oil ◽  
Palm Oil Biodiesel ◽  
Lubricating Properties
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