A No-Harm Test Matrix Investigating the Effect of Di-tert-butyl Peroxide (DTBP) Cetane Number Improver on Diesel Fuel Properties

1998 ◽  
Author(s):  
Barbara E. Goodrich ◽  
Patrick J. McDuff ◽  
Catherine C. Krupa ◽  
Luis Alvarez ◽  
Ann Marie Williams ◽  
...  
Keyword(s):  
Diesel Fuel ◽  
Cetane Number ◽  
Fuel Properties ◽  
Test Matrix ◽  
Tert Butyl ◽  
Butyl Peroxide

Modeling Fuel Effects in a Diesel Engine Using Multi-Component Fuel Surrogates in CFD

2018 ◽  
Author(s):  
Karthik V. Puduppakkam ◽  
Chitralkumar V. Naik ◽  
Ellen Meeks
Keyword(s):  
Diesel Fuel ◽  
Cetane Number ◽  
Fuel Properties ◽  
Cfd Simulations ◽  
Fuel Property ◽  
Oak Ridge ◽  
Engine Combustion ◽  
Fuel Effects ◽  
The Impact ◽  
Fuel Surrogates

A continued challenge to engine combustion simulation is predicting the impact of fuel-composition variability on performance and emissions. Diesel fuel properties, such as cetane number, aromatic content and volatility, significantly impact combustion phasing and emissions. Capturing such fuel property effects is critical to predictive engine combustion modeling. In this work, we focus on accurately modeling diesel fuel effects on combustion and emissions. Engine modeling is performed with 3D CFD using multi-component fuel models, and detailed chemical kinetics. Diesel FACE fuels (Fuels for Advanced Combustion Engines) have been considered in this study as representative of street fuel variability. The CFD modeling simulates experiments performed at Oak Ridge National Laboratory (ORNL) [1] using the diesel FACE fuels in a light-duty single-cylinder direct-injection engine. These ORNL experiments evaluated fuel effects on combustion phasing and emissions. The actual FACE fuels are used directly in engine experiments while surrogate-fuel blends that are tailored to represent the FACE fuels are used in the modeling. The 3D CFD simulations include spray dynamics and turbulent mixing. We first establish a methodology to define a model fuel that captures diesel fuel property effects. Such a model should be practically useful in terms of acceptable computational turnaround time in engine CFD simulations, even as we use sophisticated fuel surrogates and detailed chemistry. Towards these goals, multi-component fuel surrogates have been developed for several FACE fuels, where the associated kinetics mechanisms are available in a model-fuels database. A surrogate blending technique has been employed to generate the multi-component surrogates, so that they match selected FACE fuel properties such as cetane number, chemical classes such as aromatics content, T50 and T90 distillation points, lower heating value and H/C molar ratio. Starting from a well validated comprehensive gas-phase chemistry, an automated method has been used for extracting a reduced chemistry that satisfies desired accuracy and is reasonable for use in CFD. Results show the level of modeling necessary to capture fuel-property trends under these widely varying engine conditions.

Performance and Emission Evaluation of a Compression Ignition Engine Using Agitated Diesel Fuel

2015 ◽  
Vol 787 ◽  
pp. 692-696
Author(s):  
B. Jayakishan ◽  
R. Prakash ◽  
K. Kumarrathinam ◽  
D. Christopher
Keyword(s):  
Diesel Fuel ◽  
Thermal Efficiency ◽  
Cetane Number ◽  
Economic Benefits ◽  
Fuel Properties ◽  
Normal Operation ◽  
Injection Timing ◽  
Compression Ignition Engine ◽  
Performance And Emission ◽  
Diesel Cycle

Enhancing the efficiency of normal diesel cycle and gasoline cycle is gaining more importance because of depleting fossil fuel resources and other environmental issues. In normal operation the efficiency of diesel cycle is about 37 - 44%. So diesel cycle efficiency should be increased or otherwise it should be replaced with alternate fuels. Increasing the efficiency of the cycle leads to lower fuel consumption and other economic benefits. Thermal efficiency of the diesel mainly depends on compression ratio and combustion parameters such as injection timing, injection pressure and ignition delay period. Thermal efficiency also depends on fuel properties such as viscosity, density and cetane number (CN). This paper discuss about the performance evaluation of diesel fuel in a CI engine when the fuel properties are pre-enhanced by crystal agitation. In this experiment different size (Micro and Nano) SiO2 crystals are used with commercial diesel fuel in the storage tank and the performance and emission test are conducted. Results of these samples are compared with neat diesel fuel performance.

scholarly journals The effect of fuel properties on exhaust emissions from diesel passenger car

2005 ◽  
Vol 120 (1) ◽  
pp. 19-30
Author(s):  
Miłosław KOZAK ◽  
Jerzy MERKISZ ◽  
Piotr BIELACZYC
Keyword(s):  
Diesel Fuel ◽  
Cetane Number ◽  
Exhaust Emissions ◽  
Fuel Properties ◽  
Experimental Results ◽  
Sulphur Content ◽  
Nox Emissions ◽  
Passenger Car

The effect of diesel fuel sulphur content and cetane number on regulated emissions was investigated in a Euro III diesel passenger car. Experimental results indicated that fuel sulphur level had a significant impact on all regulated emission, especially on PM. Testing fuels of different ignition qualities showed that HC and CO emissions of high cetane number fuels were significantly lower than emissions of a low cetane number fuel. We also observed a little decrease in NOx emissions with an increase in the cetane number.

The Effects of Diesel Fuel Properties on Performance, Smoke, and Emissions

1979 ◽  
Vol 101 (4) ◽  
pp. 524-532 ◽  
Author(s):  
G. P. Gross ◽  
K. E. Murphy
Keyword(s):  
Nitrogen Oxides ◽  
Diesel Fuel ◽  
Cetane Number ◽  
Engine Performance ◽  
Fuel Properties ◽  
Hydrocarbon Emissions ◽  
Engine Fuel ◽  
Diesel Fuels ◽  
Distillation Temperature ◽  
Heats Of Combustion

Diesel fuels were blended from selected components to provide aromatics contents from 10 to 57 percent and viscosities from 2.21 to 6.95 cSt (mm2/s) at 100°F (38°C) in a 14 fuel set which included a commercial diesel fuel as a reference fuel. Tests of the fuels were conducted under full load at several speeds and in the Federal 13-mode and smoke-cycle procedures, using a 2-stroke naturally aspirated engine and a 4-stroke turbocharged engine. Fuel properties such as viscosity, aromaticity, cetane number, gravity, distillation points, and heat of combustion, some of which were partially correlated, were examined individually and in combinations as predictors of the engine performance data. The two test engines responded similarly to fuel variables, but with some differences in sensitivity. Power output (bhp) and fuel economy (bhp-h/lb) were correlated with the heats of combustion on volume and weight bases, respectively. Smoke increased with the amount of fuel boiling above 640°F (338°C) and was not apparently affected by fuel aromatic content. Emissions of nitrogen oxides and of nitrogen oxides plus hydrocarbons increased with increasing fuel aromatics by itself or with increasing fuel specific gravity and decreasing fuel 50 percent-distillation temperature. Hydrocarbon emissions decreased with increasing viscosity or cetane number. Carbon monoxide emissions increased with increasing 90 percent-distillation temperature and with decreases in cetane number.

scholarly journals Lignocellulosic Bioethanol and Biobutanol as a Biocomponent for Diesel Fuel

Materials ◽  
2021 ◽  
Vol 14 (19) ◽  
pp. 5597
Author(s):  
Michal Obergruber ◽  
Vladimír Hönig ◽  
Jan Jenčík ◽  
Jiří Hájek ◽  
Dominik Schlehöfer ◽  
...  
Keyword(s):  
Physicochemical Properties ◽  
Diesel Fuel ◽  
Diesel Engines ◽  
Kinematic Viscosity ◽  
Cetane Number ◽  
Fuel Mixture ◽  
Flash Point ◽  
Fuel Properties ◽  
Suitable Choice ◽  
Fuel Additive

In this paper, the fuel properties of mixtures of diesel fuel and ethanol and diesel fuel and butanol in the ratio of 2.5% to 30% were investigated. The physicochemical properties of the blends such as the cetane number, cetane index, density, flash point, kinematic viscosity, lubricity, CFPP, and distillation characteristics were measured, and the effect on fuel properties was evaluated. These properties were compared with the current EN 590+A1 standard to evaluate the suitability of the blends for use in unmodified engines. The alcohols were found to be a suitable bio-component diesel fuel additive. For most physicochemical properties, butanol was found to have more suitable properties than ethanol when used in diesel engines. The results show that for some properties, a butanol–diesel fuel mixture can be mixed up to a ratio of 15%. Other properties would meet the standard by a suitable choice of base diesel.

STUDI PENENTUAN KOMPOSISI OPTIMUM CAMPURAN BAHAN BAKAR BIODIESEL–PETRODIESEL

2018 ◽  
Vol 4 (2) ◽  
Author(s):  
Soni S. Wirawan dkk
Keyword(s):  
Carbon Monoxide ◽  
Particulate Matter ◽  
Diesel Engine ◽  
Fuel Consumption ◽  
Diesel Fuel ◽  
Cetane Number ◽  
Price Policy ◽  
Oxides Of Nitrogen ◽  
Fuel Price ◽  
Biodiesel Blend

Biodiesel is a viable substitute for petroleum-based diesel fuel. Its advantages are improved lubricity, higher cetane number and cleaner emission. Biodiesel and its blends with petroleum-based diesel fuel can be used in diesel engines without any signifi cant modifi cations to the engines. Data from the numerous research reports and test programs showed that as the percent of biodiesel in blends increases, emission of hydrocarbons (HC), carbon monoxide (CO), and particulate matter (PM) all decrease, but the amount of oxides of nitrogen (NOx) and fuel consumption is tend to increase. The most signifi cant hurdle for broader commercialization of biodiesel is its cost. In current fuel price policy in Indonesia (especially fuel for transportation), the higher percent of biodiesel in blend will increase the price of blends fuel. The objective of this study is to assess the optimum blends of biodiesel with petroleum-based diesel fuel from the technically and economically consideration. The study result recommends that 20% biodiesel blend with 80% petroleum-based diesel fuel (B20) is the optimum blend for unmodifi ed diesel engine uses.Keywords: biodiesel, emission, optimum, blend

Novel approaches for the production of bio-diesel using waste vegetable oil

2014 ◽  
Vol 3 (10) ◽  
pp. 3419
Author(s):  
Mohan Reddy Nalabolu* ◽  
Varaprasad Bobbarala ◽  
Mahesh Kandula
Keyword(s):  
Diesel Fuel ◽  
Oxidation Stability ◽  
Acid Value ◽  
Waste Cooking Oil ◽  
Flash Point ◽  
Carbon Residue ◽  
Fuel Properties ◽  
Present Moment ◽  
Total Acid ◽  
Cooking Oil

At the present moment worldwide waning fossil fuel resources as well as the tendency for developing new renewable biofuels have shifted the interest of the society towards finding novel alternative fuel sources. Biofuels have been put forward as one of a range of alternatives with lower emissions and a higher degree of fuel security and gives potential opportunities for rural and regional communities. Biodiesel has a great potential as an alternative diesel fuel. In this work, biodiesel was prepared from waste cooking oil it was converted into biodiesel through single step transesterification. Methanol with Potassium hydroxide as a catalyst was used for the transesterification process. The biodiesel was characterized by its fuel properties including acid value, cloud and pour points, water content, sediments, oxidation stability, carbon residue, flash point, kinematic viscosity, density according to IS: 15607-05 standards. The viscosity of the waste cooking oil biodiesel was found to be 4.05 mm2/sec at 400C. Flash point was found to be 1280C, water and sediment was 236mg/kg, 0 % respectively, carbon residue was 0.017%, total acid value was 0.2 mgKOH/g, cloud point was 40C and pour point was 120C. The results showed that one step transesterification was better and resulted in higher yield and better fuel properties. The research demonstrated that biodiesel obtained under optimum conditions from waste cooking oil was of good quality and could be used as a diesel fuel.

Fundamental Thermal Hazard Investigation for Tert-Butyl Peroxide Reactor Using DSC and TGA Techniques

2011 ◽  
Vol 21 (1) ◽  
pp. 53-63 ◽  
Author(s):  
Chien-Jung Chen ◽  
Jen-Hao Chi ◽  
Sheng-Hung Wu ◽  
Cheng-Tung Chen ◽  
Hsiu-Fen Tsai
Keyword(s):  
Thermal Hazard ◽  
Tert Butyl ◽  
Butyl Peroxide

Energy partitioning on photolysis of di-tert-butyl peroxide

1971 ◽  
Vol 75 (24) ◽  
pp. 3651-3655 ◽  
Author(s):  
F. H. Dorer ◽  
S. N. Johnson
Keyword(s):  
Energy Partitioning ◽  
Tert Butyl ◽  
Butyl Peroxide
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