scholarly journals Efficiency of the Diesel engine fuelled with the advanced biofuel Bioxdiesel

2021 ◽  
Author(s):  
Wojciech Poprawski ◽  
Mieczysław Struś
Keyword(s):  
Diesel Engine ◽  
Fuel Consumption ◽  
Internal Combustion Engines ◽  
Fuel Injection ◽  
Negative Impact ◽  
Ethyl Esters ◽  
Injection System ◽  
Biological Origin ◽  
Engine Load ◽  
Wide Range

One way to reduce the negative impact of internal combustion engines on the environment is to use advanced biofuels, e.g. Bioxdiesel which is a mixture of Fatty Acid Ethyl Esters (FAEE), bioethanol and standard diesel, with vast majority of the content with biological origin. The FAEE are promising content of the Diesel-Biodiesel-Ethanol blends. The FAEE can be obtained from both vegetable, eg. rapeseed oil and animal fats, as well as waste fats. The article presents research results on the efficiency of a turbocharged Diesel engine equipped with a Common Rail fuel injection system which was powered by Bioxdiesel fuel and for comparison purposes also fed with standard fuel. The effects study showed that even with a lower calorific value of Bioxdiesel fuel when compared to that for the standard diesel, the overall engine efficiency obtained during the test results was comparable to the standard fuel. Due to the presence of oxygen in the particles of the biofuel, and thus more efficient combustion processes, for a wide range of the minor engine load, the fuel consumption of Bioxdiesel and Diesel fuels was comparable to each other, while at higher engine load the fuel consumption of Bioxdiesel was lower than that for the other fuel.

Factors Affecting Performance of Dual Fuel Compression Ignition Engines

2013 ◽  
Vol 388 ◽  
pp. 217-222
Author(s):  
Mohamed Mustafa Ali ◽  
Sabir Mohamed Salih
Keyword(s):  
Diesel Engine ◽  
Fuel Consumption ◽  
Thermal Efficiency ◽  
Fuel Injection ◽  
Direct Injection ◽  
Injection System ◽  
Dual Fuel ◽  
Injection Timing ◽  
Compression Ignition ◽  
Factors Affecting

Compression Ignition Diesel Engine use Diesel as conventional fuel. This has proven to be the most economical source of prime mover in medium and heavy duty loads for both stationary and mobile applications. Performance enhancements have been implemented to optimize fuel consumption and increase thermal efficiency as well as lowering exhaust emissions on these engines. Recently dual fueling of Diesel engines has been found one of the means to achieve these goals. Different types of fuels are tried to displace some of the diesel fuel consumption. This study is made to identify the most favorable conditions for dual fuel mode of operation using Diesel as main fuel and Gasoline as a combustion improver. A single cylinder naturally aspirated air cooled 0.4 liter direct injection diesel engine is used. Diesel is injected by the normal fuel injection system, while Gasoline is carbureted with air using a simple single jet carburetor mounted at the air intake. The engine has been operated at constant speed of 3000 rpm and the load was varied. Different Gasoline to air mixture strengths investigated, and diesel injection timing is also varied. The optimum setting of the engine has been defined which increased the thermal efficiency, reduced the NOx % and HC%.

scholarly journals Impact of diethyl ether in blends with diesel fuel on acceleration process of the diesel engine

2018 ◽  
Vol 19 (12) ◽  
pp. 411-414
Author(s):  
Wincenty Lotko ◽  
Krzysztof Górski ◽  
Jerzy Stobiecki
Keyword(s):  
Diesel Engine ◽  
Diethyl Ether ◽  
Diesel Fuel ◽  
Fuel Injection ◽  
Negative Impact ◽  
Chemical Properties ◽  
Diesel Oil ◽  
Injection System ◽  
Acceleration Process ◽  
Engine Fuel

The paper presents results of the crankshaft acceleration process of the diesel engine fuelled with diesel oil - diethyl ether blends. In particular mixtures of diesel fuel with addition of 5, 10, 15 and 20 % by volume were tested. Results confirmed that DEE addition has negative impact on acceleration process of the AD3.152 engine. However it should be pointed that tests were carried out for nominal settings of the engine fuel injection system. It means that these settings were not optimal for tested blends with different physico-chemical properties compared to regular diesel fuel.

Improving the NOx-BSFC Trade Off of a Turbocharged Large Diesel Engine Using Performance Simulation

2002 ◽  
Author(s):  
Ki-Doo Kim ◽  
Dong-Hun Kim
Keyword(s):  
Experimental Data ◽  
Diesel Engine ◽  
Fuel Consumption ◽  
Fuel Injection ◽  
Nox Emission ◽  
Injection System ◽  
Miller Cycle ◽  
Intake Valve ◽  
Closing Time ◽  
Performance Simulation

The purpose of this study is to determine the optimum intake valve closing time of a large diesel engine having lower fuel consumption and lower NOx emission. The performance simulation has been conducted for this purpose, and a phenomenological combustion model is verified by experimental data of heat release rate and NOx emission in order to enhance the prediction quality of the performance simulation. The results of performance simulation are compared with measured data to confirm the modeling method and results. The fuel injection system simulation has been also performed to get fuel injection rate, and the results is also verified by experimental data of fuel injection pump pressure and injected fuel mass. The performance simulation investigate the application of Miller cycle to a large diesel engine, and so, the intake valve closing time is determined at the condition of reducing NOx emission and fuel consumption at the same time. As that result, Miller cycle has a feature that the maximum reduction of NOx emission is 15.7% while the improvement of specific fuel oil consumption is 1.7g/kWh.

A Phenomenological Model for Combustion and Emissions in Small Bore, High Speed, Direct Injection Diesel Engines

2005 ◽  
Author(s):  
N. A. Henein ◽  
I. P. Singh ◽  
L. Zhong ◽  
Y. Poonawala ◽  
J. Singh ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Diesel Engines ◽  
Phenomenological Model ◽  
High Speed ◽  
Gas Flow ◽  
Fuel Injection ◽  
Direct Injection ◽  
Injection System ◽  
Injection Process ◽  
Wide Range

This paper introduces a phenomenological model for the fuel distribution, combustion, and emissions formation in the small bore, high speed direct injection diesel engine. A differentiation is made between the conditions in large bore and small bore diesel engines, particularly regarding the fuel impingement on the walls and the swirl and squish gas flow components. The model considers the fuel injected prior to the development of the flame, fuel injected in the flame, fuel deposited on the walls and the last part of the fuel delivered at the end of the injection process. The model is based on experimental results obtained in a single-cylinder, 4-valve, direct-injection, four-stroke-cycle, water-cooled, diesel engine equipped with a common rail fuel injection system. The engine is supercharged with heated shop air, and the exhaust back pressure is adjusted to simulate actual turbo-charged diesel engine conditions. The experiments covered a wide range of injection pressures, EGR rates, injection timings and swirl ratios. Correlations and 2-D maps are developed to show the effect of combinations of the above parameters on engine out emissions. Emphasis is made on the nitric oxide and soot measured in Bosch Smoke Units (BSU).

scholarly journals General-Purpose and Scalable Internal-Combustion Engine Model for Energy-Efficiency Studies

Machines ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 26
Author(s):  
Mika Laurén ◽  
Giota Goswami ◽  
Anna Tupitsina ◽  
Suraj Jaiswal ◽  
Tuomo Lindh ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Diesel Engine ◽  
Fuel Consumption ◽  
Internal Combustion Engines ◽  
Internal Combustion ◽  
System Level ◽  
Model Parameters ◽  
Consumption Data ◽  
Wide Range ◽  
Hybrid Powertrains

Hybrid powertrains that combine electric machines and internal-combustion engines offer substantial opportunities to increase the energy efficiency and minimize the exhaust emissions of vehicles and nonroad working machines. Due to the wide range of applications of such powertrains, simulation tools are used to evaluate and compare the energy efficiency of hybrid powertrains for application-specific working cycles in virtual environments. Therefore, the accurate modeling of the powertrain components of a hybrid system is important. This paper presents an agile calculation tool that can generate realistic fuel consumption data of a scalable diesel engine. This method utilizes a simple efficiency model of the combustion and crank train friction model to generate the fuel consumption map in the operating area of a typical diesel engine. The model parameters are calibrated to produce accurate fuel consumption data in the initial phase of system-level simulations. The proposed method is also validated by using three real engine datasets, and the comparison of results is presented.

DIESEL ENGINE OPERATION IN USE OF FUEL WITH ADDITIVES

2018 ◽  
pp. 18-24
Author(s):  
Petar Kazakov ◽  
Atanas Iliev ◽  
Emil Marinov
Keyword(s):  
Diesel Engine ◽  
Fuel Consumption ◽  
Diesel Fuel ◽  
Internal Combustion Engines ◽  
Experimental Studies ◽  
Combustion Engines ◽  
Engine Operation ◽  
Factors Affecting ◽  
Operating Modes ◽  
Positive Effects

Over the decades, more attention has been paid to emissions from the means of transport and the use of different fuels and combustion fuels for the operation of internal combustion engines than on fuel consumption. This, in turn, enables research into products that are said to reduce fuel consumption. The report summarizes four studies of fuel-related innovation products. The studies covered by this report are conducted with diesel fuel and usually contain diesel fuel and three additives for it. Manufacturers of additives are based on already existing studies showing a 10-30% reduction in fuel consumption. Comparative experimental studies related to the use of commercially available diesel fuel with and without the use of additives have been performed in laboratory conditions. The studies were carried out on a stationary diesel engine СМД-17КН equipped with brake КИ1368В. Repeated results were recorded, but they did not confirm the significant positive effect of additives on specific fuel consumption. In some cases, the factors affecting errors in this type of research on the effectiveness of fuel additives for commercial purposes are considered. The reasons for the positive effects of such use of additives in certain engine operating modes are also clarified.

scholarly journals Experimental research of two stroke aircraft diesel engine

2019 ◽  
Vol 179 (4) ◽  
pp. 75-79
Author(s):  
Łukasz GRABOWSKI ◽  
Paweł KARPIŃSKI ◽  
Grzegorz BARAŃSKI
Keyword(s):  
Diesel Engine ◽  
Fuel Injection ◽  
Experimental Studies ◽  
Injection System ◽  
Temperature Control System ◽  
Maximum Pressure ◽  
System Control ◽  
Fuel Injection System ◽  
Measurement Systems ◽  
New Type

This paper presents the results of experimental studies of the opposed-piston diesel engine. This engine was designed during one of the stages of the research on a new-type drive unit for gyrocopter applications. In order to conduct research, a special test stand as well as control and measurement systems were developed. As part of the work on the engine, the fuel injection system, engine temperature control system and measurement systems were designed. In addition, a computer program has been developed for the fuel injection system control (injectors, valves fuel pressure regulators). The paper presents the results of the preliminary tests for a single value of engine speed (1500 rpm) and three values of load defined by torque. The measured value of the indicated pressure made it possible to calculate the maximum pressure. The results obtained from the bench tests were analyzed.

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