scholarly journals Addressing the Manufacturing Issues Associated with the use of Ceramic Materials for Diesel Engine Components.

2001 ◽  
Author(s):  
SB McSpadden
Keyword(s):  
Diesel Engine ◽  
Ceramic Materials ◽  
Engine Components

Topography and topology optimization of diesel engine components for light-weight design in the automotive industry

2019 ◽  
Vol 61 (1) ◽  
pp. 27-34 ◽  
Author(s):  
Ali Rıza Yıldız ◽  
Ulaş Aytaç Kılıçarpa ◽  
Emre Demirci ◽  
Mesut Doğan
Keyword(s):  
Topology Optimization ◽  
Diesel Engine ◽  
Automotive Industry ◽  
Light Weight ◽  
And Topology ◽  
Weight Design ◽  
Engine Components

Simulation of a Single Cylinder Diesel Engine Under Cold Start Conditions Using Simulink

2000 ◽  
Vol 123 (1) ◽  
pp. 117-124 ◽  
Author(s):  
H.-Q. Liu ◽  
N. G. Chalhoub ◽  
N. Henein
Keyword(s):  
Diesel Engine ◽  
Direct Injection ◽  
Cold Start ◽  
Operating Conditions ◽  
Combustion Model ◽  
Nonlinear Dynamic Model ◽  
Single Cylinder ◽  
Engine Model ◽  
Simulink Model ◽  
Engine Components

A nonlinear dynamic model is developed in this study to simulate the overall performance of a naturally aspirated, single cylinder, four-stroke, direct injection diesel engine under cold start and fully warmed-up conditions. The model considers the filling and emptying processes of the cylinder, blowby, intake, and exhaust manifolds. A single zone combustion model is implemented and the heat transfer in the cylinder, intake, and exhaust manifolds are accounted for. Moreover, the derivations include the dynamics of the crank-slider mechanism and employ an empirical model to estimate the instantaneous frictional losses in different engine components. The formulation is coded in modular form whereby each module, which represents a single process in the engine, is introduced as a single block in an overall Simulink engine model. The numerical accuracy of the Simulink model is verified by comparing its results to those generated by integrating the engine formulation using IMSL stiff integration routines. The engine model is validated by the close match between the predicted and measured cylinder gas pressure and engine instantaneous speed under motoring, steady-state, and transient cold start operating conditions.

scholarly journals Measures for Resource Saving for Diesel Locomotives

2018 ◽  
Vol 7 (4.3) ◽  
pp. 152 ◽  
Author(s):  
Dmytro Aulin ◽  
Artem Zinkivskyi ◽  
Oleksandr Anatskyi ◽  
Dmytro Kovalenko
Keyword(s):  
Diesel Engine ◽  
Initial Moment ◽  
Test Results ◽  
Economic Costs ◽  
Resource Saving ◽  
Start Up ◽  
Railway Industry ◽  
Wear And Tear ◽  
Cylinder Piston ◽  
Engine Components

This article discusses the measures for efficient use of fuel and energy resources in the railway industry. The calculation of the initial moment of starting the diesel engine and the necessary position of its crankshaft is made, on the basis of which it is proposed to modernize the locomotive start-up system with a decompressor. These measures are aimed at reducing the dynamic loads of engine components and reducing their wear and tear, as well as failure preventing. A method for the clean-up of fuel systems and the cylinder-piston diesel engine group of diesel locomotives was developed and tested using a special cleaning liquid that dissolves and removes solidified particles from pipelines and tanks. Measures have been proposed on the use of advanced models to test the modernized locomotives that will reduce the duration of the tests, resource and economic costs. The use of advanced testing model involves choosing the level of accuracy of the test results and, consequently, their duration and cost.  

A New Analytical Model for Interpreting the Wear Mechanisms of Abradable Seal Systems and Verification by Testing

1989 ◽  
Author(s):  
J. Soehngen
Keyword(s):  
Heat Flux ◽  
High Temperature ◽  
Analytical Model ◽  
Gas Turbines ◽  
Turbine Blades ◽  
Ceramic Materials ◽  
Analytical Prediction ◽  
Material Loss ◽  
Blade Tip ◽  
Engine Components

In order to minimize the specific fuel consumption of gas turbines it is necessary to increase the gas temperatures and pressure ratios. Therefore, new high-temperature resistant abradable seal systems must be developed, especially for the hot section. Since the required operating temperatures are above 1050°C, the use of metallic materials as abradables is out of the question. A problem commonly encountered in the selection of new (ceramic) materials for seal systems is that of insufficient knowledge of the tribological process occurring when turbine blades rub against an abradable seal. The purpose of the investigation was to find a simplified analytical model to describe the tribological process occurring in the rubbing of the blades against the seal, in order to help in the preselection of materials for abradable seals. The model was verified by testing high-temperature resistant abradable seals under simulated engine conditions, followed by metallurgical examination. The results of the examination of two abradable seals on run engine components confirmed the analytical prediction and laboratory tests. The differences in material loss from the blade and the abradable seal can be correlated to the heat flux distribution in the sliding parts. Using different materials on the blade tip and stationary seal (e.g. ceramic blade tip and ceramic or metallic abradable seal), the heat flux can be directed in such a way that the wear takes place largely on the static part of the engine. By calculating their relative abradability, material combinations with optimum performance for each seal application can be found.

Diesel engine control optimization for transient operation with lean/rich switches

2003 ◽  
Vol 4 (3) ◽  
pp. 219-231 ◽  
Author(s):  
N. P. Kyrtatos ◽  
E. I. Tzanos ◽  
C. I. Papadopoulos
Keyword(s):  
Diesel Engine ◽  
Direct Injection ◽  
Optimization Procedure ◽  
Combustion Model ◽  
Transient Operation ◽  
Simulation Code ◽  
Engine Operation ◽  
Control Optimization ◽  
Management Schemes ◽  
Engine Components

Transient operation of a direct injection heavy duty (DI HD) diesel engine equipped with an NOx storage catalyst (NSC) was simulated using a ‘virtual powerplant’ simulation code with a zero-dimensional multizone combustion model. For the regeneration of the NSC the engine is required to work with lean/rich operation switches, which necessitates advanced engine management schemes for the fuelling, throttle and turbocharger wastegate. An optimization procedure, using the simulation model, resulted in a proposed schedule for the control of the various engine components involved in such engine operation.

Some Design and Material Considerations for Three Vital Diesel Engine Components:

1957 ◽  
Author(s):  
A. K. Hannum ◽  
J. J. Rataiczak ◽  
J. A. Corsillo ◽  
F. H. Schmidt
Keyword(s):  
Diesel Engine ◽  
Engine Components

The Performance and Quality Control of Diesel Engine Components

1965 ◽  
Vol 180 (1) ◽  
pp. 673-688
Author(s):  
R. Towell
Keyword(s):  
Quality Control ◽  
Diesel Engine ◽  
Fuel Injection ◽  
Performance Testing ◽  
Piston Rings ◽  
Injection Equipment ◽  
Technical Requirements ◽  
Basic Ideas ◽  
Engine Components

This paper outlines methods developed to control the quality of incoming materials and finished components with emphasis on the performance that is ultimately required from them. The examples given are taken from diesel engineering but the basic ideas apply to all industries whose final products consist of an assembly of components which are complete in themselves. The quality control of materials and components fills an important role in ensuring that the technical requirements written into a specification by a designer are met by suppliers. The author outlines various techniques developed in his company to achieve this. The paper has two main sections: ( a) quality control of incoming materials, and ( b) performance control of components. The first part deals with the controls established for cast-iron components of various sizes ranging from bedplates and columns weighing about 20 tons to piston rings weighing less than one pound. Ultrasonic testing is briefly discussed as also is the material specification for white metal bearings. The second part of the paper gives examples of performance testing of a number of diesel engine components together with brief details of some of the test rigs that have been developed to carry out the tests. Some of the components discussed in this section are piston rings, crankshafts, camshafts, cams, and fuel injection equipment.

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