scholarly journals Modernization of the Mechanical Fuel System of a Diesel Locomotive Engine through Physical and Numerical Modeling

Energies ◽  
2021 ◽  
Vol 14 (24) ◽  
pp. 8554
Author(s):  
Leonid Plotnikov ◽  
Nikita Grigoriev
Keyword(s):  
Diesel Engine ◽  
Internal Combustion Engines ◽  
Fuel System ◽  
Diesel Locomotive ◽  
Original Design ◽  
Engine Operation ◽  
Fuel Pump ◽  
Fuel Supply ◽  
Locomotive Engine ◽  
Technical Solutions

Reducing harmful emissions from exhaust gases and increasing energy efficiency are urgent tasks when designing reciprocating internal combustion engines. In this experimental work, the fuel system of a diesel locomotive engine operating on the Miller cycle is improved. The purpose of the study is to improve the environmental and economic indicators of diesel engines at minimal financial cost. The article provides an overview of the main research on improving fuel supply, mixing and combustion. The features of engine operation are also briefly described. Numerical simulation of the diesel engine operating cycle was performed before the bench tests. The experiments were performed on a full-size diesel engine with a power of 1200 kW. The measuring equipment and experimental technique are described in the article. The technical solutions that made it possible to improve the fuel supply are described. A new design for the high-pressure fuel pump drive is proposed. The optimal fuel injection advance angles are determined. An original design for the fuel pump plunger was developed. The proposed technical solutions made it possible to reduce fuel consumption by up to 3% (from 217.8 to 211.4 g/kW·h) and NOx emissions two-fold (from 19.4 to 8.8 g/kW·h).

Rapeseed Oil Plant

2020 ◽  
pp. 59-62
Author(s):  
E. V. Ovchinnikov ◽  
S. Yu. Uyutov ◽  
S. S. Shevelev ◽  
A. D. Dubrovsky
Keyword(s):  
Diesel Engine ◽  
Vegetable Oil ◽  
Diesel Fuel ◽  
Diesel Engines ◽  
Rapeseed Oil ◽  
Motor Fuel ◽  
Fuel System ◽  
Engine Operation ◽  
Oil Fuel ◽  
Technical Solutions

This article off ers a method and technical solutions for using vegetable oil fuel as fuel for a diesel engine. The use of rapeseed as a fuel is hindered by its peculiarity, namely, the main problem is the high viscosity and high self-ignition temperature relative to diesel fuel. The authors propose technical solutions that ensure the use of vegetable oil fuel as a motor fuel in diesel engines. For research purposes, a two-fuel system was developed, manufactured and tested, which allows working part of the time on diesel fuel and part of the time on vegetable oil, in particular on rapeseed oil, depending on the engine operating modes. Experiments have shown high effi ciency of the two-fuel system, which excludes negative consequences for the diesel engine. As a result of the research, the team of authors obtained results and conclusions confirming that the dual fuel system allows the use of vegetable oils as motor fuel in diesel engines, while the engine operation is possible in all modes.

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.

Simulation Model of Four Stroke, Six Cylinder Marine Diesel Engine

2015 ◽  
Vol 236 ◽  
pp. 113-118
Author(s):  
Marcin Kluczyk ◽  
Andrzej Grządziela
Keyword(s):  
Diesel Engine ◽  
Fuel Injection ◽  
Technical Condition ◽  
Operational Experience ◽  
Fuel System ◽  
Engine Operation ◽  
Injection Pump ◽  
Fuel Injection Pump ◽  
Marine Diesel ◽  
Basic Equations

The paper presents a model of dynamics of six-cylinder inline diesel engine executed in the Matlab software. The basic equations necessary to describe the forces acting during the engine operation was presented. Application of some simplifications allowed to present proposal of a mathematical model of the engine, which allows analysis of changes of forces in the crank-piston system, depending on the technical condition of the fuel system elements. Operational experience indicate that one of the most common cause of failure of the fuel system is reduced fuel charge supplied by a defective fuel injection pump. Calculations of gas forces had been replaced by the implementation into the model indication charts recorded from tests on a engine test stand. Simulation results were presented as a result of FFT spectra of modeled tangential forces.

The study of a tractor diesel engine operation on ethanol and rapeseed oil at various speed modes

Trudy NAMI ◽  
2022 ◽  
pp. 53-59
Author(s):  
A. N. Kozlov ◽  
M. I. Araslanov
Keyword(s):  
Diesel Engine ◽  
Rapeseed Oil ◽  
Power Plants ◽  
Alternative Fuels ◽  
Internal Combustion Engines ◽  
Renewable Energy Sources ◽  
Comparative Method ◽  
Combustion Process ◽  
Engine Operation ◽  
Tractor Diesel

Introduction (problem statement and relevance). The depletion of oil fuels reserves and the steady growth of their consumption will require new solutions in the development of technologies based on renewable energy sources. The study of the possible alternative fuels use in internal combustion engines is a complex scientific task, including the research of the alternative fuels effect on the power plants operation efficiency.The purpose of the study was to obtain the speed characteristics of a diesel engine operating on ethyl alcohol and rapeseed oil.Methodology and research methods. An air-cooled with volumetric mixture formation tractor diesel engine of dimension 2Ch 10.5/12.0 was selected as an object of research. The study was carried out by a comparative method. To measure the speed characteristic a fixed cyclic fuel supply was applied after the engine reaching the nominal operating mode at a crankshaft speed of 1800 min-1 and an average effective pressure in the cylinder of 0.588 MPa. This approach, with the all-mode regulator of the fuel pump turned off, made it possible to identify the main regularities of intra-cylinder processes at different speed modes of engine operation.Scientific novelty and results. The article presents the bench tests results of a diesel engine operating at various speed modes on ethanol and rapeseed oil, and analyzes in detail the main indicators of the combustion process and the effective engine performance in comparison to the use of traditional fuel. The practical significance lies in the possibility of using the obtained results to improve the diesel engines operation on alternative renewable fuels.

PROCESSES IN FUEL SYSTEM OF DIESEL ENGINE AT SPEEDING UP OF THE HIGH PRESSURE FUEL PUMP

2014 ◽  
pp. 50-53 ◽  
Author(s):  
V. M. Slavutskij ◽  
E. A. Salykin ◽  
V. I. Lipilin ◽  
A. A. Skorobogatov
Keyword(s):  
High Pressure ◽  
Diesel Engine ◽  
Fuel System ◽  
Fuel Pump

Crankcase Blowby Characterization From an EMD 16-645-E Locomotive Diesel Engine

2003 ◽  
Author(s):  
Steven G. Fritz ◽  
Adam Schumann ◽  
Brian Smith
Keyword(s):  
Diesel Engine ◽  
Flow Rate ◽  
Diesel Locomotive ◽  
Air Filters ◽  
Air Filter ◽  
Flow Rates ◽  
Locomotive Engine ◽  
Series Of Experiments ◽  
Locomotive Diesel ◽  
Exhaust Particulate

This paper documents results from an experimental study performed to determine the contribution of crankcase blowby to exhaust particulate matter (PM) emissions from an EMD 16-645-E, roots-blown, 1,500 kW, diesel locomotive engine. The EMD 16-645-E roots-blown engine is equipped with a closed crankcase system, where blowby is routed through an inertial separator and then into the intake air system, downstream of the intake air filters, but upstream of the roots blowers. This paper describes the system used to quantify the blowby flow rate, the blowby PM concentration (mg/m3), and the PM mass flow rate (g/hr) that is returned to the engine intake air. Since crankcase blowby is drawn from the crankcase and into the intake air due to the vacuum created by the intake air filter restriction, a series of experiments were also performed to document blowby flow rates as a function of intake air filter restriction. Blowby PM measurements were also taken upstream and downstream of the inertial separator that is used to remove some of the larger blowby aerosol particles. These data were then used to calculate the filtration efficiency of the inertial blowby separator. The crankcase blowby PM emissions are compared to the engine-out exhaust PM emissions. Results from this study indicate that for the EMD 16-645-E locomotive diesel engine tested, crankcase blowby represents less than 2 percent of the total exhaust PM emissions.

scholarly journals Combustion and Emission Characteristics of a Diesel Engine Operating with Varying Equivalence Ratio and Compression Ratio - A CFD Simulation

2020 ◽  
Vol 01 (03) ◽  
pp. 101-110
Author(s):  
Kazi Mostafijur Rahman ◽  
Zobair Ahmed
Keyword(s):  
Diesel Engine ◽  
Compression Ratio ◽  
Equivalence Ratio ◽  
Internal Combustion Engines ◽  
Cfd Simulation ◽  
Combustion Engine ◽  
Computational Cost ◽  
Injection Timing ◽  
Emission Characteristics ◽  
Engine Operation

The performance of diesel engine highly depends on atomization, vaporization and mixing of fuel with air. These factors are strongly influenced by various parameters e.g. injection pressure, injection timing, compression ratio, equivalence ratio, cylinder geometry, in cylinder air motion etc. In this study, a diesel engine has been investigated by employing a commercial CFD software (ANSYS Forte, version 18.1) especially developed for internal combustion engines (ICE) modeling; focusing primarily on the effects of equivalence ratio and compression ratio on combustion and emission characteristics. RNG k-ε model was employed as the turbulence model for analyzing the physical phenomena involved in the change of kinetic energy. In order to reduce the computational cost and time, a sector mesh of 45o angle with periodic boundary conditions applied at the periodic faces of the sector, is considered instead of using the whole engine geometry. Simulations are performed for a range of equivalence ratio varying from 0.6 to 1.2 and for three compression ratios namely, 15:1, 18:1 and 21:1. Results show that, improvement in combustion characteristics with higher compression ratio could be achieved for both lean and rich mixtures. Peak in-cylinder pressure and peak heat release nearer to TDC are achieved for compression ratio of 18:1 that could results in more engine torque. For compression ratio beyond 16:1, effects of fuel concentration on ignition delay is more pronounced. At lower compression ratio, in-cylinder temperature is not sufficiently high for atomization, vaporization, mixing of fuel with air, and preflame reactions to occur immediately after the fuel injection. NOx emission in diesel engine increases due to higher pressure and temperature inside the cylinder associated with relatively higher compression ratio. Rich mixture leads to more CO and unburnt hydrocarbon emission compared to lean mixture as result of incomplete combustion. Engine operation with too high compression ratio is detrimental as emission is a major concern.

scholarly journals Improved method of processing the output parameters of the diesel locomotive engine for more efficient maintenance

2021 ◽  
Vol 23 (2) ◽  
pp. 315-323
Author(s):  
Peter Zvolenský ◽  
Dalibor Barta ◽  
Pawel Pawel Droździel ◽  
Ľubomír Kašiar
Keyword(s):  
Diesel Engine ◽  
Rolling Stock ◽  
Electronic Control ◽  
Railway Transport ◽  
Improved Method ◽  
Diagnostic Equipment ◽  
Diesel Locomotive ◽  
Environmental Friendliness ◽  
Electronic Control System ◽  
Locomotive Engine

Modernization of aged rolling stock is one of the possibilities to adapt it to the current requirements for better environmental friendliness and economy of railway transport. However, some vehicle upgrades lead to new failures that were not observed in the original vehicles. The cause is the so-called “hybrid design”, built on a combination of original and selected new components. The aim of the work was to improve the situation with frequent failures and unavailability that occur on the modernized locomotive where a new diesel engine and new electronic control system was installed. Within the work, a simplified methodology for evaluating the outputs of diagnostic equipment was developped based on and applied to specific locomotive type and its diesel engine. The methodology resulted in a significant reduction of the time for assessing the condition of the vehicle’s diesel engine and more effective maintenance. The paper also presents other possibilities in the analysis of big data in the maintenance of rolling stock e.g. using fuzzy logic.

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 ◽  
Fuel Additives ◽  
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. Key words: diesel fuel, diesel fuel additives, engine efficiency.

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