scholarly journals Determination of Diagnostic Parameters of Power Plants Based on Internal Combustion Engines

Mining Revue ◽  
2021 ◽  
Vol 27 (3) ◽  
pp. 86-92
Author(s):  
Stefan Zaichenko ◽  
Ümran Erçetin ◽  
Roman Kulish ◽  
Denis Derevyanko ◽  
Vadim Shalenko
Keyword(s):  
Internal Combustion Engines ◽  
Diagnostic System ◽  
Internal Combustion ◽  
Maximum Efficiency ◽  
Residual Entropy ◽  
Physical Parameters ◽  
Combustion Engines ◽  
Design Features ◽  
Power Sources ◽  
Diagnostic Parameters

Abstract The presented article shows a method for finding monitored parameters for creating a diagnostic system for autonomous power sources based on spark ignition engines and diesel engines. The classification of structures of autonomous power sources based on internal combustion engines has been carried out. The analysis of the design features of the most common back-up power sources on the market based on internal combustion engines (ICE) indicates the widespread use of generators with a synchronous alternator. The analysis of the design features of autonomous power supplies has made it possible to develop logical models for different designs. The influence of the occurrence of a faulty state of each element on other elements of the systems is analyzed, and the results of the analysis are summarized in tables. An informative Claude Chenon criterion is proposed for finding the optimal number of diagnostic parameters among an infinite number of possible combinations of physical parameters that characterize the system. When solving the problem, a hypothesis was proposed about the equiprobability of cases of exit from the working state of each of the elements of the system. The use of Claude Chenon allows you to find the parts that make up the generators, which with maximum efficiency reduce the degree of uncertainty in the system. After determining the residual entropy, the parts of the system are selected, the state of which should be monitored by the diagnostic system. For such parts of the system, diagnostic parameters are found and methods for obtaining them are indicated.

scholarly journals Substantiation of diagnostic parameters of autonomous sources of electric energy on the basis of the internal combustion engine at development of system of technical diagnostics

2020 ◽  
pp. 29-34
Author(s):  
S. Zaichenko ◽  
R. Kulish ◽  
D. Derevyanko ◽  
N. Zhukova
Keyword(s):  
Internal Combustion Engine ◽  
Information Entropy ◽  
Internal Combustion Engines ◽  
Combustion Engine ◽  
Electric Energy ◽  
Internal Combustion ◽  
Residual Entropy ◽  
Combustion Engines ◽  
Design Features ◽  
Diagnostic Parameters

The paper presents a method for selecting diagnostic parameters for creating a system for diagnosing autonomous sources of electricity based on an internal combustion engine (ICE). A literary search for autonomous sources of electricity was conducted. The expediency of using internal combustion engines as autonomous sources of electric energy is determined. The analysis of design features of the most widespread in the market of Ukraine reserve sources of electric energy on the basis of internal combustion engines is carried out. The analysis of the design features of autonomous power supplies allowed a developing of a logical model of the object of study. The developed logical scheme of the research allows to establish the relationship between the main structural elements of the system, as well as to determine the possible states of the system. The consequences of the occurrence of a faulty state of each element on the other elements of the system are analyzed, and the results of the analysis are summarized in the table. An informative criterion is proposed to determine the finite number of diagnostic parameters among the infinite number of possible combinations of physical parameters that characterize the system. The concept of information entropy of K. Shannon is offered as an informative criterion. Equally probable cases of exit from the working condition of each of the elements of the system are considered. Applying the concept of Shannon's information entropy, the residual entropies of the system at the faulty state of one of the nodes of the autonomous power supply are determined. The criterion of informativeness is the value of residual entropy. The application of this criterion allowed determine of the elements of the system that most effectively reduce the degree of uncertainty of the system. The element of the system that has the lowest residual entropy has the maximum effect on the state of the autonomous power source based on the internal combustion engine. Based on the values of residual entropy, the nodes of the system are selected, the state of which should be primarily monitored by the diagnostic system. For such elements diagnostic parameters are defined, and ways of their reception are resulted.

Piston ring–liner lubrication and tribological performance evaluation: A review

2017 ◽  
Vol 232 (2) ◽  
pp. 193-209 ◽  
Author(s):  
Cristiana Delprete ◽  
Abbas Razavykia
Keyword(s):  
Internal Combustion Engines ◽  
Piston Ring ◽  
Combustion Engine ◽  
Internal Combustion ◽  
Combustion Engines ◽  
Power Losses ◽  
Oil Consumption ◽  
Major Power ◽  
Power Sources ◽  
Engine Efficiency

Internal combustion engines are at present used as the major power sources for transportation and power generator. Improvement of the internal combustion engine efficiency is expected due to strict environmental standards and energy costs. Any reduction in oil consumption, friction power losses and emissions results in improving engines’ performance and durability. Automotive industries have intense passion to increase engines’ efficiency to meet the fuel economy and emission standards. Many studies have been conducted to develop reliable approaches and models to understand the lubrication mechanisms and calculate power losses. This review paper summarizes the synthesis of the main technical aspects considered during modeling of piston ring–liner lubrication and friction losses investigations. The literature review highlights the effects of piston ring dynamics, components geometry, lubricant rheology, surface topography and adopted approaches, on frictional losses contributed by the piston ring-pack.

A comprehensive overview of hydrogen engine design features

2007 ◽  
Vol 221 (8) ◽  
pp. 911-920 ◽  
Author(s):  
S Verhelst ◽  
S Verstraeten ◽  
R Sierens
Keyword(s):  
Internal Combustion Engines ◽  
Control Strategies ◽  
Experimental Studies ◽  
Internal Combustion ◽  
Transport Sector ◽  
Special Focus ◽  
Combustion Engines ◽  
Design Features ◽  
Comprehensive Overview ◽  
Engine Design

Realizing decreased CO2 emissions from the transport sector will be possible in the near future when substituting (part of) the currently used hydrocarbon-fuelled internal combustion engines (ICEs) with hydrogen-fuelled ICEs. Hydrogen-fuelled ICEs have advanced to such a stage that, from the engine point of view, there are no major obstacles to doing this. The present paper indicates the advantages of hydrogen as a fuel for spark ignition (SI) internal combustion engines. It also shows how the hydrogen engine has matured. An extensive overview is given of the literature on experimental studies of abnormal combustion phenomena, mixture formation techniques, and load control strategies for hydrogen-fuelled engines. The Transport Technology research group of the Department of Flow, Heat and Combustion Mechanics at Ghent University has been working on the development and optimization of hydrogen engines for 15 years. An overview of the most important experimental results is presented with special focus on the most recent findings. The article concludes with a list of engine design features of dedicated hydrogen SI engines.

scholarly journals ENERGY EFFICIENT ELECTROMECHANICAL SOIL TREATMENT SYSTEM BASED ON ELECTRIC MOTORBLOCK

2021 ◽  
pp. 71-78
Author(s):  
Ihor Nazarenko ◽  
Oleksandr Kovalov
Keyword(s):  
Motor Unit ◽  
Direct Current ◽  
Electric Motor ◽  
Internal Combustion Engines ◽  
Internal Combustion ◽  
Maximum Efficiency ◽  
Experimental Sample ◽  
Combustion Engines ◽  
Traction Motor ◽  
Soil Structures

In Ukraine, the number of farms, private land users and protected soil structures has increased significantly in recent years. To increase the efficiency of vegetable production, small-sized mobile units in the form of motoblocks with internal combustion engines of domestic and foreign production have been widely used. However, during the operation of mobile units with internal combustion engines in greenhouses and hotbeds, the noise level and air pollution increase, which negatively affect not only people but also plants. The disadvantages of motoblocks with internal combustion engines should also include a fairly high specific consumption of liquid fuel, which has a high cost, difficulties in starting and stopping the unit, as well as the relatively low reliability of the internal combustion engine. More promising for work in protected soil structures are mobile units with traction motors, called electric motors, as environmentally friendly units that do not have these shortcomings. The main technical characteristics of the experimental sample of a small-sized electrified soil-cultivating motoblock are given in the work. The structural scheme of the power energy channel of the electric motor unit is substantiated, which clearly demonstrates the processes of energy conversion in it. The equation of energy balance of the electric motor unit and the main energy ratios that determine the properties of the traction motor in the drive of the electric motor unit are obtained. The algorithm of optimal control of a direct current traction motor by the maximum efficiency for direct current motors of serial and mixed excitation is substantiated. The results of field tests of the prototype of the electric motor unit are presented. The analysis of the obtained results of experimental researches of the electrified tillage motor-drive driven by the direct current motor of sequential excitation testifies to the reduction of specific energy consumption for the main types of tillage by 12-15%.

scholarly journals AUTOMOBILE POWERED BY COMPRESSED AIR, PNEUMATIC CAR 2020

2020 ◽  
pp. 135-141
Author(s):  
Peter Marcinko ◽  
Mikulas Hajduk
Keyword(s):  
Internal Combustion Engines ◽  
Internal Combustion ◽  
Compressed Air ◽  
Combustion Engines ◽  
Design Features ◽  
Target Setting ◽  
Technical School ◽  
The Third

Urgency of the research. The issue of a pneumatic car – air car developing is very important nowadays, as the environment is threatened by a variety of emissions from cars. The decision has to be made. There are various alternatives to internal combustion engines, and one of them is compressed air engines. Target setting. The main goal is to develop a car that runs on compressed air and create a frame that matches the dimensions specified for the competition. Actual scientific researches and issues analysis. In recent years, Aventics has organized competitions and races on pneumatic vehicles. These races have been running by Emerson for thirteen years. The pneumatic cars had to take part in all categories of competitions. We have been dealing with this issue in Slovakia for the third year, and this pneumatic car is our third model. Uninvestigated parts of general matters defining. This article describes a car that runs on compressed air, as well as describes in more detail the frame used and its design features. The research objective. The purpose of this study is to analyze the pneumatic vehicle, its parts and to give a detailed description of the manufactured frame and its properties. The corresponding frame was made on the basis of the conditions determined by Emerson's competitions. The statement of basic materials. The analysis was conducted on the basis of the terms of the competition. These conditions are determined by the maximum and minimum dimensions of the car. Based on these conditions, a frame was developed, it was previously analyzed by FEA - MKP. The description of the frame is given below. Conclusions. This article describes the design of a pneumatic car for competitions. The competition focus is cars powered by compressed air. The pneumatic cars were developed by bachelors and technical school. The design of this car has passed the initial inspection and has been approved by the organizers of the competition.

Development of Technical Diagnostic System for Internal Combustion Engines

2019 ◽  
Vol 16 (11) ◽  
pp. 4569-4572
Author(s):  
Lenar Ajratovich Galiullin ◽  
Rustam Asgatovich Valiev ◽  
Ilnar Ajratovich Galiullin
Keyword(s):  
World War I ◽  
Automotive Industry ◽  
Automobile Industry ◽  
Internal Combustion Engines ◽  
Diagnostic System ◽  
Internal Combustion ◽  
Economic Life ◽  
Combustion Engines ◽  
Diagnostic Systems ◽  
Leading Role

This article describes methods of development of technical diagnostic systems for internal combustion engines. The automotive industry plays a leading role in the economy of any state. The history of the development of the global automotive industry is closely linked with the development of many branches of engineering. So, by the beginning of the 20th century, the automobile industry began to consume half of the steel and iron produced, three-quarters of rubber and leather, a third part of nickel and aluminum, and a seventh part of wood and copper. Autobuilding came in first place in terms of production among other branches of engineering, began to have a serious impact on the economic life of states. By the beginning of World War I, the car park on the globe was about 2 million. Of these, 1.3 million were in the USA, 245 thousand in England, 100 thousand in France, 57 thousand in Austria-Hungary, 12 thousand—to Italy, 10 thousand—to the Russia.

Design of a Method for Test Diagnostics of an Internal Combustion Engine Based on the Analysis of the Exhaust Gas Composition

2020 ◽  
Vol 67 (1) ◽  
pp. 104-110
Author(s):  
Aleksandr V. Gritsenko ◽  
Grigoriy N. Salimonenko ◽  
Maksim V. Nazarov
Keyword(s):  
Internal Combustion Engine ◽  
Internal Combustion Engines ◽  
Combustion Engine ◽  
Internal Combustion ◽  
Research Purpose ◽  
Exhaust Gas ◽  
Combustion Engines ◽  
Ignition System ◽  
Exhaust Gases ◽  
Diagnostic Parameters

The introduction of methods for timely diagnostics of internal combustion engines allows maintaining the environmental indicators of the car fleet at the highest level. (Research purpose) The research purpose is in increasing the reliability of diagnostics of internal combustion engines by using data obtained by selective sampling of exhaust gases. (Materials and methods) Informational, mathematical and experimental research methods, including methods for statistical processing of results and analysis of data obtained during experiments were used during the study. (Results and discussion) The main systems that affect the environmental performance of internal combustion engines has been identified: the fuel supply system, the ignition system and the exhaust gas neutralization system. The article describes a generalized mathematical model for calculating the characteristics of exhaust gases. Authors conducted operational tests on 35 internal combustion engines with justification of their number according to standard methods. The actual value of diagnostic parameters was processed into relative percentages for drawing a nomogram. A zero value has been set for the reference state of the elements specified by the manufacturer. (Conclusions) It was found that the dominant number of failures accounted for internal combustion engines, in detail: the ignition system produces 15-25 percent of failures, the power system produces 30-44 percent, the exhaust system produces 10-15 percent. It was found that for unambiguous identification of any combination of factors, it is necessary to have output values of at least three evaluation criteria. It was found that the most sensitive parameters for evaluating the technical condition of the three systems are: changes in the engine crankshaft speed, the parameters of exhaust gas toxicity, CO, CO2, CH, O2 when providing test modes (operation of the internal combustion engine on 1 cylinder at 20 and 40 percent of the throttle opening). The article describes designed a gasoline engine loader for the implementation of diagnostic modes and control of diagnostic parameters, that allows to create operating loads with an accuracy of 0.1 percent.

Application of a high-repetition-rate laser diagnostic system for single-cycle-resolved imaging in internal combustion engines

2002 ◽  
Vol 41 (24) ◽  
pp. 5002 ◽  
Author(s):  
Johan Hult ◽  
Mattias Richter ◽  
Jenny Nygren ◽  
Marcus Aldén ◽  
Anders Hultqvist ◽  
...  
Keyword(s):  
Repetition Rate ◽  
Internal Combustion Engines ◽  
Diagnostic System ◽  
Internal Combustion ◽  
High Repetition Rate ◽  
Combustion Engines ◽  
Single Cycle ◽  
High Repetition ◽  
Laser Diagnostic
Sign in / Sign up

Export Citation Format

Share Document