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 Influence of Pressure on Gas/Liquid Interfacial Area in a Tray Column

2020 ◽  
Vol 10 (13) ◽  
pp. 4617
Author(s):  
Adel Almoslh ◽  
Falah Alobaid ◽  
Christian Heinze ◽  
Bernd Epple
Keyword(s):  
Flow Rate ◽  
Gas Flow ◽  
Volumetric Flow Rate ◽  
Interfacial Area ◽  
Gas Flow Rate ◽  
Test Rig ◽  
Flow Rates ◽  
Waste Gas ◽  
Simulated Waste ◽  
Series Of Experiments

The influence of pressure on the gas/liquid interfacial area is investigated in the pressure range of 0.2–0.3 MPa by using a tray column test rig. A simulated waste gas, which consisted of 30% CO2 and 70% air, was used in this study. Distilled water was employed as an absorbent. The temperature of the inlet water was 19 °C. The inlet volumetric flow rate of water was 0.17 m3/h. Two series of experiments were performed; the first series was performed at inlet gas flow rate 15 Nm3/h, whereas the second series was at 20 Nm3/h of inlet gas flow rate. The results showed that the gas/liquid interfacial area decreases when the total pressure is increased. The effect of pressure on the gas/liquid interfacial area at high inlet volumetric gas flow rates is more significant than at low inlet volumetric gas flow rates. The authors studied the effect of decreasing the interfacial area on the performance of a tray column for CO2 capture.

scholarly journals Modelling and Simulation of the Performance and Combustion Characteristics of a Locomotive Diesel Engine Operating on a Diesel–LNG Mixture

Energies ◽  
2021 ◽  
Vol 14 (17) ◽  
pp. 5318
Author(s):  
Imantas Lipskis ◽  
Saugirdas Pukalskas ◽  
Paweł Droździel ◽  
Dalibor Barta ◽  
Vidas Žuraulis ◽  
...  
Keyword(s):  
Engine Performance ◽  
Fuel Mixture ◽  
Combustion Characteristics ◽  
Cylinder Pressure ◽  
Diesel Locomotive ◽  
Compression Ignition Engine ◽  
Locomotive Engine ◽  
Rate Of Heat Release ◽  
Fuel Mixtures ◽  
Locomotive Diesel

The article describes a compression-ignition engine working with a dual-fuel system installed in diesel locomotive TEP70 BS. The model of the locomotive engine has been created applying AVL BOOST and Diesel RK software and engine performance simulations. Combustion characteristics have been identified employing the mixtures of different fuels. The paper compares ecological (CO2, NOx, PM) and energy (in-cylinder pressure, temperature and the rate of heat release (ROHR)) indicators of a diesel and fuel mixtures-driven locomotive. The performed simulation has shown that different fuel proportions increased methane content and decreased diesel content in the fuel mixture, as well as causing higher in-cylinder pressure and ROHR; however, in-cylinder temperature dropped. CO2, NOx and PM emissions decrease in all cases thus raising methane and reducing diesel content in the fuel mixture.

Development of the Low-Emission GE-7FDL High-Power Medium-Speed Locomotive Diesel Engine

2003 ◽  
Vol 125 (2) ◽  
pp. 505-512 ◽  
Author(s):  
G. Chen ◽  
P. L. Flynn ◽  
S. M. Gallagher ◽  
E. R. Dillen
Keyword(s):  
Diesel Engine ◽  
Fuel Efficiency ◽  
Function Evaluation ◽  
Engine Fuel ◽  
Medium Speed ◽  
Low Emission ◽  
Locomotive Engine ◽  
Engine System ◽  
Reliability Performance ◽  
Locomotive Diesel

This paper summarizes the technical development of the low-emission GE-7FDL series locomotive diesel engine. The development focused on reducing the engine exhaust NOx emission significantly while reducing and curbing other visible and nonvisible emissions with minimal adverse impact on the engine fuel efficiency and minimal changes to the engine system and components. Concepts were analyzed, and were investigated using a single-cylinder 7FDL research engine. A low-emission 16-cylinder 7FDL engine and a GE locomotive prototype were built and tested for performance demonstration, function evaluation, and design optimization. The GE low-emission 7FDL engines and locomotives have been in production. The newly developed low-emission locomotive engine meets the EPA Tier-0 levels without fuel efficiency penalty. This was accomplished with minimal changes to the engine system and components. The desired engine reliability performance is retained. The engines are interchangeable with the preceding 7FDL baseline models, and the upgrade of the existing baseline engines to the low-emission version is facilitated.

Self-Cleaning Oil Bath Engine Intake Filter for Locomotive Applications

1968 ◽  
Vol 90 (1) ◽  
pp. 49-53
Author(s):  
R. W. Sexton ◽  
J. K. Sparrow
Keyword(s):  
Diesel Engines ◽  
Performance Standards ◽  
Operating Conditions ◽  
The Self ◽  
Air Filters ◽  
Air Filter ◽  
Air Cleaning ◽  
The North ◽  
Locomotive Engine ◽  
Self Cleaning

The self-cleaning oil bath air filter has been used for over 30 years for filtering intake air for large, stationary diesel engines. It has proven successful under all types of operating conditions, from the hot, sandy climate of the Southwest to the subfreezing temperatures in the North. Only recently has it been adapted successfully to locomotive applications. Previous performance standards required of locomotive engine air filters did not require the high filtering performance of this type of filter. Only since the introduction of the high horsepower diesel locomotives, where air filter standards have been considerably increased beyond the abilities of conventional locomotive filters, has the self-cleaning principle of good oil bath filtration become feasible. The purpose of this paper is to show how, through design, testing, and applications, this type of oil bath principle can be adapted to meet the critical air-cleaning needs of today’s modern locomotive engines.

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.

Ozonation of Textile Reactive Red 198 Dye in a CSTR

2013 ◽  
Vol 16 (1) ◽  
Author(s):  
M. T. F. Tabrizi ◽  
D. Glasser ◽  
D. Hildebrandt
Keyword(s):  
Flow Rate ◽  
Order Rate Constant ◽  
Reactive Dye ◽  
Unsteady State ◽  
Flow Rates ◽  
First Order ◽  
Reactive Red 198 ◽  
Series Of Experiments ◽  
The Subject ◽  
Dye Solutions

AbstractThe decolouration effect of ozone on the reactive dye Reactive Red 198 in a CSTR was the subject of a series of experiments. The results showed that ozonation is capable of reducing the colour remaining in the water after using reactive dyes rapidly and effectively of around 15 minutes. The effect of the frit was analysed to check that it was not a factor limiting oxidation. The effect of flow rate and of the initial concentration of dye on the dye concentration as a function of time and at steady state were measured, and the rate of decolouration was calculated under both steady and unsteady state conditions. The flow rate was adjusted for various initial dye concentrations as well as at various flow rates of dye solutions. The apparent first order rate constant is about 0.10 min

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 ◽  
Juraj Grenčík ◽  
Paweł 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.

Application of linear classifier for technical state identification of the diesel engine

2019 ◽  
pp. 31-40
Author(s):  
Maksim Panchenko ◽  
Vladimir Grachev ◽  
Alexander Grishchenko ◽  
Fedor Bazilevskiy
Keyword(s):  
Diesel Engine ◽  
Practical Importance ◽  
Visual Display ◽  
Technical State ◽  
Support Vector ◽  
Diesel Locomotive ◽  
Autocorrelation Matrix ◽  
Linear Classifier ◽  
Parameters Selection ◽  
Locomotive Engine

Objective: To analyze application possibilities of a linear classifier for identification of a diesel’s technical state by the crankshaft instantaneous speed signal. Methods: SVM linear classifier is used for identification of the current diesel technical state class by means of a pulse rate-of-turntransducer stress scanning image autocorrelation matrix of the diesel crankshaft. In order to provide the possibility of a visual display of results matrix dimensions were reduced to 22, informative parameters selection as well as classification quality control were carried out by means of 5-fold cross check (cross-validation). Results: 16ChN26/26 (1-8DG) diesel locomotive engine is the object of research. The former is operating in modes 350, 770 and 845 r/min both with all cylinder barrels functioning and with dead 5-m and 8-m right cylinder barrels. It was established that the application of a linear classifier synthesized by means of the support vector machine, makes it possible to detect single failures within the accuracy up to 100 % and multiple failures within the accuracy of 75–100 %. Practical importance: The described method for determination of the diesel locomotive engine technical state can be applied for diesel-powered locomotives in use to reduce the expenses on diesel engine repair.

Developing a High-Powered Diesel Engine for Railway Traction

1968 ◽  
Vol 90 (4) ◽  
pp. 375-383
Author(s):  
T. Schur
Keyword(s):  
Diesel Engine ◽  
Field Research ◽  
Bench Test ◽  
Design Criteria ◽  
Railway Traction ◽  
Locomotive Engine ◽  
Stroke Cycle ◽  
Engine Type ◽  
Locomotive Diesel

The paper deals, first of all, with the design criteria for the new Sulzer four-stroke locomotive engine being developed by the author’s firm and how some of these derived from two experimental engines which, although identical in construction, were operated on the four-stroke and two-stroke cycle, respectively. Field research as well as elaborate bench test facilities have been provided to perfect the new locomotive diesel engine. The work that has recently been carried out on some of the more important components of this is described. Some mention is made of the problems encountered with combustion and pressure charging at the high specific loads to which this engine type is being taken.

Effect of Fuel Injection Parameters on Performance and Emissions for High Efficiency Engines

2019 ◽  
Author(s):  
Raj Kumar ◽  
Yan Wang ◽  
Ryan Vojtech ◽  
James Cigler
Keyword(s):  
Diesel Engine ◽  
Flow Rate ◽  
Fuel Injection ◽  
Injection System ◽  
Nozzle Flow ◽  
Injection Timing ◽  
Engine Fuel ◽  
Flow Rates ◽  
Injector Nozzle ◽  
Performance And Emissions

Abstract Future diesel engine legislations are focused on further improvements in green-house gas emissions, such as carbon dioxide while additionally pushing for lower NOx emissions levels. These are being achieved with a combination of base-engine, fuel-injection system, air-system and after-treatment system improvements. In this paper, the effect of one injection system characteristics, namely injector flow-rate was investigated on engine performance and emissions using both numerical and experimental techniques. The phenomenon of increasing injector flow was first numerically investigated using commercial code Converge. Two approaches to increasing injector flow-rate were investigated. The first approach was by increasing the injector nozzle hole size while keeping the number of holes constant. The second approach was to change the number of the holes while keeping the injector nozzle size fixed. These simulations led to procurement of injectors to validate the simulation trends. Engine tests were performed with Navistar’s 12.4 L multi-cylinder heavy-duty diesel engine. The identified nozzle flow rates included a 66% increase from that of the baseline case. All the engine tests were performed at the typical cruising condition for this engine, at a series of injection timing and injection pressure values. It was observed that the crank angle for 50% of the integrated total calculated heat release (CA50) for the fuel burned was the most important factor that influenced the brake-thermal efficiency (BTE) and different injectors had similar BTE at constant CA50. With regards to emission, at higher nozzle flow rates, the combustion showed a slightly higher propensity for soot and increased levels of carbon monoxide.

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