Compatibility of Palm Biodiesel Blends on the Existing Elastomer Fuel Hose in Diesel Engine with Approach of Dynamic Test Rig: A Concept Study

2020 ◽  
Vol 1010 ◽  
pp. 172-177
Author(s):  
Narisa Sa'at ◽  
Ariffin Samsuri ◽  
Noradila Abdul Latif ◽  
Nurul Fitriah Nasir ◽  
Rais Hanizam Madon ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Diesel Fuel ◽  
Alternative Fuels ◽  
Dynamic Testing ◽  
Dynamic Test ◽  
Field Trials ◽  
Biodiesel Fuel ◽  
Compatibility Study ◽  
Fuel System ◽  
Experimental Conditions

Elastomer is one of the important material for the hoses, sealants and tubes in the components of fuel delivery system in diesel engine vehicles due to the factor of compatibility with diesel fuel. However, concern were arise that presence of alcohol, fatty acid component and other factors such as water content in the alternative fuels which is blended biodiesel fuel and different chemical composition from the diesel fuel may increase further uncertainty to the consumer of diesel engine or diesel engine manufacturers in terms of compatibility issue. Thus this paper intends to assess current and typical test standards on their efficacy of representing the fuel system of diesel engine vehicles. Respectively, ASTM D471 are based on laboratory immersion studies and the experimental conditions are differ from the real service conditions in the fuel system of diesel engine vehicles. Even though number of previous studies regarding to the compatibility of elastomer components has been reported, there is a need to set up the exact material that present in the fuel system of diesel engine vehicles. This is especially right for elastomers since their resistance is mainly depends on their elemental compositions. As such, introduction of the dynamic testing approach that may be applied when assessing the compatibility study between blended biodiesel fuel that simulate the actual fuel system of a diesel engine vehicles before carrying out in the field trials.

Optimization of the Performance and Emissions of Soy Biodiesel Blends in a Modern Diesel Engine

2010 ◽  
Author(s):  
Mike Bunce ◽  
David Snyder ◽  
Gayatri Adi ◽  
Carrie Hall ◽  
Gregory Shaver
Keyword(s):  
Decision Making ◽  
Diesel Engine ◽  
Fuel Consumption ◽  
Diesel Fuel ◽  
Alternative Fuels ◽  
Combustion Noise ◽  
Biodiesel Fuel ◽  
Attractive Alternative ◽  
Rail Pressure ◽  
Biodiesel Blend

As the world is faced with continued petroleum demand, the need for alternative fuels which are renewable and domestically available is becoming apparent. Biodiesel is one such attractive alternative fuel which has physical and chemical properties similar to, and miscible with conventional diesel. While biodiesel does have many advantages, due to fuel property differences including oxygenation and a lower calorific value than diesel fuel, biodiesel combustion often results in higher fuel consumption and higher nitrogen oxide (NOx) emissions than diesel combustion. Stock diesel engine design and decision making target optimal performance with conventional diesel fuel, leading to suboptimal results for biodiesel. This study aimed to determine the appropriate engine decision making for the air/fuel ratio (AFR), exhaust gas recirculation (EGR) fraction, injection (rail) pressure, and start of main fuel injection (SOI) in a modern common rail diesel engine using variable geometry turbo-charging and operating with varying blend ratios of diesel and soy-based biodiesel fuel mixtures to minimize brake-specific fuel consumption (BSFC) and adhere to strict combustion noise, NOx and particulate matter (PM) emission constraints. When operating with the stock engine decision making, biodiesel blend combustion resulted in increases in NOx of up to 39% and fuel consumption increases up to 20% higher than the nominal diesel levels but also had substantial reductions in PM. Through modulation of the AFR, EGR fracton, rail pressure, and SOI at several operating points, it was demonstrated that the optimal engine decision-making for biodiesel shifted to lower AFRs and higher EGR fractions in order to reduce NOx, and shifted to more advanced timings in order to mitigate the observed increases in fuel consumption at the nominal settings. The optimal parameter combinations for B5 (5% biodiesel and 95% diesel), B20 (20% biodiesel and 80% diesel) and B100 (100% biodiesel) still maintained substantial PM reductions but resulted in NOx and noise levels below nominal diesel levels. However, these parameter combinations had little impact on reducing the biodiesel fuel consumption penalty but did improve the thermal efficiency of biodiesel blend combustion.

Spray and Combustion Characteristics of Biodiesel∕Diesel Blended Fuel in a Direct Injection Common-Rail Diesel Engine

2008 ◽  
Vol 130 (3) ◽  
Author(s):  
Hyun Kyu Suh ◽  
Hyun Gu Roh ◽  
Chang Sik Lee
Keyword(s):  
Diesel Engine ◽  
Diesel Fuel ◽  
Direct Injection ◽  
Injection Rate ◽  
Combustion Characteristics ◽  
Biodiesel Fuel ◽  
Injection Timing ◽  
Pilot Injection ◽  
Blended Fuel ◽  
Conventional Diesel Fuel

The aim of this work is to investigate the effect of the blending ratio and pilot injection on the spray and combustion characteristics of biodiesel fuel and compare these factors with those of diesel fuel in a direct injection common-rail diesel engine. In order to study the factors influencing the spray and combustion characteristics of biodiesel fuel, experiments involving exhaust emissions and engine performance were conducted at various biodiesel blending ratios and injection conditions for engine operating conditions. The macroscopic and microscopic spray characteristics of biodiesel fuel, such as injection rate, split injection effect, spray tip penetration, droplet diameter, and axial velocity distribution, were compared with the results from conventional diesel fuel. For biodiesel blended fuel, it was revealed that a higher injection pressure is needed to achieve the same injection rate at a higher blending ratio. The spray tip penetration of biodiesel fuel was similar to that of diesel. The atomization characteristics of biodiesel show that it has higher Sauter mean diameter and lower spray velocity than conventional diesel fuel due to high viscosity and surface tension. The peak combustion pressures of diesel and blending fuel increased with advanced injection timing and the combustion pressure of biodiesel fuel is higher than that of diesel fuel. As the pilot injection timing is retarded to 15deg of BTDC that is closed by the top dead center, the dissimilarities of diesel and blending fuels combustion pressure are reduced. It was found that the pilot injection enhanced the deteriorated spray and combustion characteristics of biodiesel fuel caused by different physical properties of the fuel.

Optimization of mixed biofuel composition for diesel engine

2021 ◽  
Keyword(s):  
Diesel Engine ◽  
Methyl Ester ◽  
Diesel Fuel ◽  
Rapeseed Oil ◽  
Alternative Fuels ◽  
Operating Mode ◽  
Promising Alternative ◽  
Motor Fuels ◽  
Engine Combustion ◽  
Basic Characteristics

Biofuels derived from vegetable oils are known to be promising alternative fuels for diesel engines. The possibility of using mixtures of petroleum diesel fuel with rapeseed oil and rapeseed oil methyl ester as environmentally friendly motor fuels is considered. The practicability of changing the composition of these mixtures in accordance with the engine operating mode is shown. A technique for multicriteria optimization of the composition of such mixed biofuels is suggested. The basic characteristics of the optimal composition of these mixed biofuels are calculated. A device for regulating fuel’s composition is proposed. The basic characteristic of regulation of the blended biofuel composition realized by the device is presented. Keywords diesel engine; combustion chamber; oil diesel fuel; rapeseed oil; rapeseed oil methyl ester; biofuel mixture; ecological characteristics; exhaust gases toxicity

scholarly journals Some aspects of cycle variability at the Diesel engine fuelled with animal fats

2019 ◽  
Vol 112 ◽  
pp. 01014
Author(s):  
Adrian Nicolici ◽  
Constantin Pană ◽  
Niculae Negurescu ◽  
Alexandru Cernat ◽  
Cristian Nuţu
Keyword(s):  
Diesel Engine ◽  
Diesel Fuel ◽  
Alternative Fuels ◽  
Combustion Process ◽  
Pollutant Emissions ◽  
Experimental Investigations ◽  
Maximum Pressure ◽  
Content Increase ◽  
Animal Fats ◽  
Viable Solution

The progressive diminution of the oil reserves all over the world highlights the necessity of using alternative fuels derived from durable renewable resource. The use of the alternative fuels represents a viable solution to reduce the pollutant emissions and to replace fossil fuels. Thus, a viable solution is the use of the animal fats in mixture with the diesel fuel at the diesel engines. A D2156 MTN8 diesel engine was firstly fuelled with diesel fuel and then with different blends of diesel fuel-animal fats (5% and 10% animal fats content). In the paper are presented some results of the experimental investigations of engine fuelled with preheated animal fats. The raw animal fats effects on the combustion process and on the pollutant emissions at different engine loads and 1450 rev/min engine speed are showed. The engine cycle variability increases at the animal fats content increase. The cycle variability for maximum pressure, maximum pressure angle and indicated mean effective pressure is analysed. The cycle variability coefficients values don’t exceed the recommended values of the standard diesel engine.

scholarly journals Influence of Fuel Injection Pressure on the Emissions Characteristics and Engine Performance in a CRDI Diesel Engine Fueled with Palm Biodiesel Blends

Energies ◽  
2019 ◽  
Vol 12 (20) ◽  
pp. 3837 ◽  
Author(s):  
Sam Ki Yoon ◽  
Jun Cong Ge ◽  
Nag Jung Choi
Keyword(s):  
Diesel Engine ◽  
Diesel Fuel ◽  
Fuel Injection ◽  
Injection Pressure ◽  
Biodiesel Fuel ◽  
Nox Emissions ◽  
Oxides Of Nitrogen ◽  
Fuel Blend ◽  
Engine Load ◽  
Fuel Injection Pressure

This experiment investigates the combustion and emissions characteristics of a common rail direct injection (CRDI) diesel engine using various blends of pure diesel fuel and palm biodiesel. Fuel injection pressures of 45 and 65 MPa were investigated under engine loads of 50 and 100 Nm. The fuels studied herein were pure diesel fuel 100 vol.% with 0 vol.% of palm biodiesel (PBD0), pure diesel fuel 80 vol.% blended with 20 vol.% of palm biodiesel (PBD20), and pure diesel fuel 50 vol.% blended with 50 vol.% of palm biodiesel (PBD50). As the fuel injection pressure increased from 45 to 65 MPa under all engine loads, the combustion pressure and heat release rate also increased. The indicated mean effective pressure (IMEP) increased with an increase of the fuel injection pressure. In addition, for 50 Nm of the engine load, an increase to the fuel injection pressure resulted in a reduction of the brake specific fuel consumption (BSFC) by an average of 2.43%. In comparison, for an engine load of 100 Nm, an increase in the fuel injection pressure decreased BSFC by an average of 0.8%. Hydrocarbon (HC) and particulate matter (PM) decreased as fuel pressure increased, independent of the engine load. Increasing fuel injection pressure for 50 Nm engine load using PBD0, PBD20 and PBD50 decreased carbon monoxide (CO) emissions. When the fuel injection pressure was increased from 45 MPa to 65 MPa, oxides of nitrogen (NOx) emissions were increased for both engine loads. For a given fuel injection pressure, NOx emissions increased slightly as the biodiesel content in the fuel blend increased.

scholarly journals ANALYSIS OF THE ECOLOGICAL PARAMETERS OF THE DIESEL ENGINE POWERED WITH BIODIESEL FUEL CONTAINING METHYL ESTERS FROM CAMELINA SATIVA OIL

Transport ◽  
2010 ◽  
Vol 25 (1) ◽  
pp. 22-28 ◽  
Author(s):  
Sergejus Lebedevas ◽  
Galina Lebedeva ◽  
Violeta Makarevičienė ◽  
Irina Kazanceva ◽  
Kiril Kazancev
Keyword(s):  
Diesel Engine ◽  
Diesel Fuel ◽  
Methyl Esters ◽  
Chemical Properties ◽  
Acid Methyl Ester ◽  
Fuel Mixture ◽  
Camelina Sativa ◽  
Biodiesel Fuel ◽  
Load Range ◽  
Acid Methyl

The article explores the possibilities of using fatty acid methyl esters derived from the oil of a new species of oily plant Camelina sativa not demanding on soil. The performed research on the physical and chemical properties of pure methyl esters from Camelina sativa show that biofuels do not meet requirements for the biodiesel fuel standard (LST EN 14214:2009) of a high iodine value and high content of linoleic acid methyl ester, so they must be mixed with methyl esters produced from pork lard the content of which in the mixture must be not less than 32%. This article presents the results of tests on combustion emission obtained when three‐cylinder diesel engine VALMET 320 DMG was fuelled with a mixture containing 30% of this new kind of fuel with fossil diesel fuel comparing with emissions obtained when the engine was fuelled with a fuel mixture containing 30% of conventional biodiesel fuel (rapeseed oil methyl esters) with fossil diesel fuel. The obtained results show that using both types of fuel, no significant differences in CO and NOx concentrations were observed throughout the tested load range. When operating on fuels containing methyl esters from Camelina sativa, HC emissions decreased by 10 to 12% and the smokeness of exhaust gas by 12 to 25%.

The Emission Performance Research and Analysis of Diesel Engine Fueled with Biodiesel Hybrid Fuel

2012 ◽  
Vol 610-613 ◽  
pp. 1501-1504
Author(s):  
Gui Fu Wu ◽  
Ji Yi Luan ◽  
Yuan Hua Jia ◽  
Dong Hua Jiang
Keyword(s):  
Diesel Engine ◽  
Fuel Consumption ◽  
Diesel Fuel ◽  
Load Condition ◽  
Biodiesel Fuel ◽  
Smoke Emission ◽  
Emission Performance ◽  
Full Load ◽  
Consumption Ratio ◽  
Performance Research

Biodiesel can be made from the esterification with plant or animal fat.It has been being paid more and more attention for its characteristics of non-sulphur, non-arene,higher hexadecane and biodegradablity and renewablity Biodiesel is similar to No.0 diesel in characteristics,so it can be applied to engines directly without changing the structure.This article shows the emission performance of diesel mixed with biodiesel fuel which in different proportion,and its CO, HC and smoking exhaust have been decreased greatly,then NOx increase slightly,while the fuel-consumption ratio remains stable(when on full load condition,5%, 15% and25% of hybrid fuel compared with pure diesel fuel,HC emission decreases by 15%,33.3% and 83.3%,and carbon smoke emission decreases by 16.25%,51.8% and 63.6%).

Comparison of Performance and Emission Characteristic of Tamanu, Mahua and Pongamia Biodiesel in a Di Diesel Engine

2013 ◽  
Vol 768 ◽  
pp. 218-225 ◽  
Author(s):  
M. Parthasarathy ◽  
J. Isaac Joshua Ramesh Lalvani ◽  
B. Parthiban ◽  
K. Annamalai
Keyword(s):  
Diesel Engine ◽  
Diesel Fuel ◽  
Alternative Fuels ◽  
Fossil Fuels ◽  
Operating Conditions ◽  
Emission Characteristic ◽  
Performance And Emission ◽  
Di Diesel Engine ◽  
Alternative Sources ◽  
Petroleum Reserves

Random extraction and consumption of fossil fuels have leads to a reduction in petroleum reserves. As for as developing countries like India is connected the need to search for alternative fuels is most urgent as India is heavily dependent upon the import of petroleum to meet its demands for automotive and power sectors. This has inspired curiously in alternative sources for petroleum based fuels. An alternative fuel must be economically competitive and environmentally acceptable. India has great potential for production of biofuels like Biodiesel from vegetable seeds. In the quest to find an alternative to the existing diesel and petrol fuels various Biodiesel and alcohol has been tried and tested in the Internal Compression engine. In this direction, an attempt has been made to investigate the performance and emission characteristic of Biodiesels and compare it with diesel. The Biodiesels considered are Tamanu, Mahua and Pongamia were tested with four stroke diesel engine. A drastic improvement in reduction of Hydrocarbon (HC) and Carbon monoxide (CO) were found for Biodiesels at high engine loads. Smoke and Nitrogen oxides (NOx) were slightly higher for Biodiesels. Biodiesels exposed similar combustion stages to diesel fuel. Therefore use of transesterified vegetable oils can be partially substituted for the diesel fuel at most operating conditions in term of the performance parameters and emissions without any engine modification.

scholarly journals Development of the Premixing Injector in Burner System

2013 ◽  
Vol 465-466 ◽  
pp. 302-307 ◽  
Author(s):  
Mohamad Farid Sies ◽  
Norrizal Mustaffa ◽  
Hanis Zakaria ◽  
Hamidon bin Salleh ◽  
Bukhari Manshoor ◽  
...  
Keyword(s):  
Global Warming ◽  
Renewable Energy ◽  
Diesel Engine ◽  
Diesel Fuel ◽  
Alternative Fuel ◽  
Biodiesel Fuel ◽  
Manufacturing Sectors

Today, global warming is the biggest issues due the increasing of emissions from diesel fuel in transportation and manufacturing sectors [1-. The solution for this issue is by using Biodiesel fuel as alternative fuel in both sectors. Malaysia government has introduced the Biodiesel (B5) in the diesel engine for transportations [3]. Biodiesel fuel (BDF) in alternative fuel and renewable energy but it has low quality of fuel and can reduce the performance compared to the diesel fuel (DF)[4-6].

scholarly journals Study on Particulate Matter of Diesel Engine Using Waste Cooking Oil

2015 ◽  
Vol 773-774 ◽  
pp. 420-424 ◽  
Author(s):  
Nur Fauziah Jaharudin ◽  
Nur Atiqah Ramlan ◽  
Mohd Herzwan Hamzah ◽  
Abdul Adam Abdullah ◽  
Rizalman Mamat
Keyword(s):  
Particulate Matter ◽  
Diesel Engine ◽  
Diesel Fuel ◽  
Alternative Fuels ◽  
Engine Speed ◽  
Direct Injection ◽  
Waste Cooking Oil ◽  
Manufacturing Cost ◽  
Alternative Source ◽  
Cooking Oil

Particulate matter (PM) is one of the major pollutants emitted by diesel engine which have adverse effects on human health. Accordingly, many researches have been done to find alternative fuels that are clean and efficient. Biodiesel is preferred as an alternative source for diesel engine which produces lower PM than diesel fuel. However, the manufacturing cost of biodiesel from vegetable oil is expensive. Therefore, using waste cooking oil (WCO) for biodiesel would be more economical and sustainable solution. The characteristics of direct injection diesel engine in term of the PM have been investigated experimentally in this study. The experiments were conducted using single cylinder diesel engine with different speed (1200 rpm, 1500 rpm, 1800 rpm, 2100 rpm, 2400 rpm) at constant load. PM emission of WCO B100 and diesel fuel was compared and the effect of PM components such as soluble organic fraction (SOF) and soot were studied. The result showed WCO B100 reduces the PM emission at all engine speed. Furthermore, both fuels showed highest reduction of PM concentration at moderate engine speed of 1500 rpm.

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