scholarly journals Predicting the Temperature and Composition – Dependent Density and Viscosity of Diesel Fuel – Ethanol Blends

2019 ◽  
Vol 64 (2) ◽  
pp. 213-220
Author(s):  
Adrian Todoruț ◽  
Andreia Molea ◽  
István Barabás
Keyword(s):  
Diesel Fuel ◽  
Combustion Engine ◽  
Fuel Ethanol ◽  
Major Influence ◽  
Fuel Production ◽  
Viscosity Models ◽  
Different Temperatures ◽  
Ethanol Blends ◽  
Combustion Processes ◽  
Dependent Density

Density and viscosity are very important fuel properties which have a major influence not only on the fuel production, transportation and distribution processes but also on the processes that take place in an internal combustion engine. Developing robust and high precision density and viscosity models for stabilized diesel fuel – ethanol blends helps the production of fuel to adhere to the quality requirements regarding density and viscosity and the modeling and simulation of injection and combustion processes. For modeling the density and the viscosity of diesel fuel – ethanol blends, five mixtures were prepared with ethanol content up to 15 % (v/v) and were stabilized by adding tetrahydrofuran as a surfactant at room temperature. The temperature-dependent density and viscosity of the blends were measured at four different temperatures (0, 15, 40 and 50 °C) using an SVM 3000 type apparatus. Based on experimental data, several mixing rules were fitted to them and three new models were developed, of which two need only one experimental value. These models yield very good accuracies, presenting average relative deviations of 0.0604 % in the case of density and 3.8931 % in the case of viscosity.

scholarly journals Experiment and Investigation in Reducing Emission from an IC Engine by using Inlet Helical Roller

2021 ◽  
Vol 23 (10) ◽  
pp. 318-326
Author(s):  
S. Rajendran ◽  
◽  
K. Ganesan ◽  
K. Sakthivel ◽  
SM. Murugesan ◽  
...  
Keyword(s):  
Combustion Engine ◽  
Intake Manifold ◽  
Major Influence ◽  
Ic Engine ◽  
Inlet Stream ◽  
Flow Formation ◽  
Small Change ◽  
And Performance ◽  
Cylinder Flow ◽  
Combustion Processes

This research paper reports that in-cylinder flow formation in a combustion engine has a major influence on the combustion, emission and performance characteristics. Air and fuel enters the combustion chamber of an engine throughout the intake manifold with high velocity. So, it introduces a helical roller in the path of inlet stream of mixture. It achieved the swirl by using a component that could be easily integrated into any existing engines at low engine speed. The performance of the engine increases and completes the combustion, leads to reduced emissions and small change in volumetric efficiency. It is also proved that increased swirl movement introduces helical roller that helps the flame spread which used into constant heat transfer rate. This suggests to a new combustion technique that should be developed to yield improved primary combustion processes in-side the engine with significantly reduced exhaust gas emissions.

scholarly journals Effect of dodecanol additive on auto-ignition properties of diesel oil and ethanol blends

2017 ◽  
Vol 170 (3) ◽  
pp. 104-107
Author(s):  
Artur KRZEMIŃSKI ◽  
Hubert KUSZEWSKI ◽  
Kazimierz LEJDA ◽  
Adam USTRZYCKI
Keyword(s):  
Diesel Fuel ◽  
Low Temperatures ◽  
Cetane Number ◽  
Diesel Oil ◽  
Fuel Ethanol ◽  
Fuel Blend ◽  
Comparative Tests ◽  
Auto Ignition ◽  
Ethanol Blends ◽  
Low Solubility

In order to increase the possibility of utilizing ethanol to propel the combustion ignition engines, ethanol or methanol blends with diesel oil or other similar fuels are used. However, ethanol has a low solubility index in diesel fuel especially at low temperatures, which requires the use of additives to improve this feature. The paper presents the results of comparative tests of the derived cetane number of diesel fuel blend with ethanol and the addition of dodecanol which is used to improve the miscibility of ethanol with diesel fuel. The results of tests indicate that the effect of dodecanol additive in blended diesel fuel-ethanol on the auto-ignition properties of such fuel is negligible.

Use of SNPKh-6438 corrosion inhibitor for protecting equipment in a diesel fuel production unit

2010 ◽  
Vol 46 (2) ◽  
pp. 87-90
Author(s):  
O. V. Ugryumov ◽  
O. A. Varnavskaya ◽  
F. Sh. Shakirov ◽  
G. V. Romanov
Keyword(s):  
Corrosion Inhibitor ◽  
Diesel Fuel ◽  
Production Unit ◽  
Fuel Production

Characterization of Ethanol Blends Combustion Processes and Soot Formation in a GDI Optical Engine

2013 ◽  
Author(s):  
Francesco Catapano ◽  
Silvana Di Iorio ◽  
Maurizio Lazzaro ◽  
Paolo Sementa ◽  
Bianca Maria Vaglieco
Keyword(s):  
Soot Formation ◽  
Optical Engine ◽  
Ethanol Blends ◽  
Combustion Processes

scholarly journals Modelling the Process of Production of Diesel Fuels by the Use of Generalized Nets

Mathematics ◽  
2021 ◽  
Vol 9 (19) ◽  
pp. 2351
Author(s):  
Danail Dichev Stratiev ◽  
Dicho Stratiev ◽  
Krassimir Atanassov
Keyword(s):  
Petri Nets ◽  
Diesel Fuel ◽  
Fuel Production ◽  
Diesel Fuels ◽  
Generalized Net ◽  
Fuel Components

The process of commodity diesel fuel production in a refinery has been modelled by the use of the Generalized Net (GN) apparatus. GNs are extensions of Petri nets and of all their modifications and extensions. The model accounts for the orders of different grades of diesel fuel and the available amounts of the different diesel fuel components. It can be used for the synchronization and optimization of these processes.

Performance and emissions characteristics of biodiesel from soybean oil

2005 ◽  
Vol 219 (7) ◽  
pp. 915-922 ◽  
Author(s):  
M Canakci
Keyword(s):  
Soybean Oil ◽  
Diesel Fuel ◽  
Combustion Engine ◽  
Cetane Number ◽  
Engine Performance ◽  
Performance And Emission ◽  
Diesel Fuels ◽  
Animal Fats ◽  
Alternative Diesel Fuel ◽  
Performance And Emissions

Biodiesel is an alternative diesel fuel that can be produced from renewable feedstocks such as vegetable oils, waste frying oils, and animal fats. It is an oxygenated, non-toxic, sulphur-free, biodegradable, and renewable fuel. Many engine manufacturers have included this fuel in their warranties since it can be used in diesel engines without significant modification. However, the fuel properties such as cetane number, heat of combustion, specific gravity, and kinematic viscosity affect the combustion, engine performance and emission characteristics. In this study, the engine performance and emissions characteristics of two different petroleum diesel fuels (No. 1 and No. 2 diesel fuels) and biodiesel from soybean oil and its 20 per cent blends with No. 2 diesel fuel were compared. The results showed that the engine performance of the neat biodiesel and its blend was similar to that of No. 2 diesel fuel with nearly the same brake fuel conversion efficiency, and slightly higher fuel consumption. CO2 emission for the biodiesel was slightly higher than for the No. 2 diesel fuel. Compared with diesel fuels, biodiesel produced lower exhaust emissions, except NO x.

Determination of a most representative cycle from cylinder pressure ensembles via statistical method using distribution skewness

2021 ◽  
pp. 146808742110655
Author(s):  
Jorge Pulpeiro González ◽  
Carrie M Hall ◽  
Christopher P Kolodziej
Keyword(s):  
Statistical Method ◽  
Combustion Engine ◽  
Pressure Rise ◽  
Operating Conditions ◽  
Cylinder Pressure ◽  
Pressure Trace ◽  
Combustion Knock ◽  
Engine Operating Condition ◽  
Combustion Processes

In internal combustion engine research, cylinder pressure measurements provide valuable information about the underlying thermodynamic and combustion processes, and are typically collected in ensembles of several 100 traces. Although in some particular fields of combustion research all traces are analyzed, in most cases only one trace is studied because analyzing all the traces is impractical due to the large number of collected samples. Instead, an ensemble-averaged pressure trace is commonly calculated and used for analysis. However, this pressure trace is highly smoothed and dynamic information is lost during the averaging process. With the average trace, pressure rise rates are lower and pressure oscillations such as the ones resulting from combustion knock are lost. In this work, a statistical method was developed to determine the “most representative cycle,” which is the cycle from the ensemble that has the pressure trace most representative of the engine operating condition. Eleven characteristic parameters are computed from each pressure trace and probabilistic distributions are obtained for each of the parameters using all the traces in the ensemble. Finally, the most representative cycle is selected by means of a cost function minimization. The benefits of this method are illustrated using experimental data from four very different engine platforms, under four different combustion modes and over a range of operating conditions.

scholarly journals An Experimental Study on the Performance and Emission of the diesel/CNG Dual-Fuel Combustion Mode in a Stationary CI Engine

Energies ◽  
2019 ◽  
Vol 12 (20) ◽  
pp. 3857 ◽  
Author(s):  
Arkadiusz Jamrozik ◽  
Wojciech Tutak ◽  
Karol Grab-Rogaliński
Keyword(s):  
Diesel Fuel ◽  
Carbon Dioxide Emissions ◽  
Combustion Engine ◽  
Combustion Process ◽  
Pressure Rise ◽  
Dual Fuel ◽  
Maximum Pressure ◽  
Stable Operation ◽  
Performance And Emission ◽  
Ci Engine

One of the possibilities to reduce diesel fuel consumption and at the same time reduce the emission of diesel engines, is the use of alternative gaseous fuels, so far most commonly used to power spark ignition engines. The presented work concerns experimental research of a dual-fuel compression-ignition (CI) engine in which diesel fuel was co-combusted with CNG (compressed natural gas). The energy share of CNG gas was varied from 0% to 95%. The study showed that increasing the share of CNG co-combusted with diesel in the CI engine increases the ignition delay of the combustible mixture and shortens the overall duration of combustion. For CNG gas shares from 0% to 45%, due to the intensification of the combustion process, it causes an increase in the maximum pressure in the cylinder, an increase in the rate of heat release and an increase in pressure rise rate. The most stable operation, similar to a conventional engine, was characterized by a diesel co-combustion engine with 30% and 45% shares of CNG gas. Increasing the CNG share from 0% to 90% increases the nitric oxide emissions of a dual-fuel engine. Compared to diesel fuel supply, co-combustion of this fuel with 30% and 45% CNG energy shares contributes to the reduction of hydrocarbon (HC) emissions, which increases after exceeding these values. Increasing the share of CNG gas co-combusted with diesel fuel, compared to the combustion of diesel fuel, reduces carbon dioxide emissions, and almost completely reduces carbon monoxide in the exhaust gas of a dual-fuel engine.

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