Engineering Technologies and Systems最新文献

{"title":"Estimation of the Elasticity Modulus of Composite Electroplated Coatings during Their Layer-by-Layer Deposition","authors":"S. Zhachkin, A. Zavrazhnov, N. Penkov, A. Martynov, R. Zadorozhny","doi":"10.15507/2658-4123.031.202103.430-448","DOIUrl":"https://doi.org/10.15507/2658-4123.031.202103.430-448","url":null,"abstract":"Introduction. To keep automobiles and tractors in operation conditions, it is necessary to restore the inner cylindrical surfaces of the friction pair parts. This is the most laborintensive activity. The method of electroplated contact deposition of composite coatings, based on elastic plastic deformation of formed layers, is used for repairing surfaces. To use this method it is necessary to determine the values of the elasticity modulus, on which the wear resistance of tribocouplings depends.\u0000Materials and Methods. For the study, cylindrical samples made of 30 HGSA and 30 HGSNA steels were used. Electrolyte containing 200–250 g/l chromium oxide, 2.0–2.5 g/l sulfuric acid, and distilled water was used for electroplating the coatings. When calculating the stress-strain state, the apparatus of continuum mechanics was used.\u0000Results. The dependence of the coating pliability as a function of the parameters of individual elementary layers is determined. When the multilayer coating of three types (orthogonal-reinforced, cross-reinforced and quasi-isotropic) is applied, its structure does not depend on the angles of kinematic tool movement on the inner cylindrical surface of the part. For each type of coatings, the way to determine the constant stiffness coefficients of the layers is specified. The dependences for calculating the elasticity modulus of the applied material are derived from the values of the stiffness coefficients.\u0000Discussion and Conclusion. In determining the modulus of elasticity of multilayered composite coatings, the calculation is made for the individual layers by passing to the convective coordinates, which is in complete agreement with the Lagrange point of view on the study of the motion of a continuous medium. The results obtained are of practical significance in the selection of the coating material to be applied for the restoration of internal cylindrical surfaces.","PeriodicalId":53796,"journal":{"name":"Engineering Technologies and Systems","volume":"10 1","pages":""},"PeriodicalIF":0.3,"publicationDate":"2021-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73073107","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Studying Grain Flow Immersion into Liquids of Various Densities Based on the Methods of Experiment Design","authors":"A. Saitov, V. Sysuev, V. Saitov","doi":"10.15507/2658-4123.031.202103.414-429","DOIUrl":"https://doi.org/10.15507/2658-4123.031.202103.414-429","url":null,"abstract":"Introduction. In addition to grain, a grain heap of rye may contain poisonous ergot sclerotia. Modern grain cleaning machines do not isolate ergot sclerotia in one technological process because of the similarity of physical properties in linear dimensions. Isolation of ergot sclerotia from rye grain in one technological process is possible through the use of aqueous solutions of inorganic salts. The purpose of the study is to determine the optimum elevation of the loading hopper relative to the liquid surface. The data obtained contribute to increasing the quality of the technological process of the machine being developed.\u0000Materials and Methods. The paper considers the delivery of rye grain flow from the loading hopper outlet into the liquid by varying the specific grain load, liquid density and the delivery height. To set up the experiments, the experiment design methods have been used. The experimental data have been processed using the statistical package Statgraphics Plus 5.1.\u0000Results. The estimation of the effective elevation of the loading hopper outlet relative to the liquid surface when delivering grain flow has been carried out. There have been obtained regression models for the fraction of grains, which did not submerge and rose up to the liquid surface with air bubbles.\u0000Discussion and Conclusion. It has been found that the density of the aqueous salt solution has a significant effect on the percentage of grains, which did not submerge and rose up to the liquid surface with air bubbles. The smallest values of at different density of the liquid and specific grain load are achieved at a grain delivery height 56.0 ∙ 10–3 m.","PeriodicalId":53796,"journal":{"name":"Engineering Technologies and Systems","volume":"1 1","pages":""},"PeriodicalIF":0.3,"publicationDate":"2021-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90202461","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of Combustion Performance and Heat Release in Preheated Fuel Consumed Diesel Engines","authors":"S. Plotnikov, A. Kartashevich, M. Motovilova","doi":"10.15507/2658-4123.031.202103.349-363","DOIUrl":"https://doi.org/10.15507/2658-4123.031.202103.349-363","url":null,"abstract":"Introduction. The expansion of the fleet of tractors and vehicles causes increased requirements for internal combustion engines. This problem can be solved by improving the work process in a diesel engine that can be achieved by heating the diesel fuel in the fuel supply system. External thermal action is carried out on the high pressure line directly in front of the injectors.\u0000Materials and Methods. To analyze and calculate the process of combustion and heat release in a diesel engine with preliminary thermal fuel preparation, bench tests were carried out using the National Instruments software and the necessary equipment.\u0000Results. Experimental data of the diesel fuel combustion process in the cylinder of the 4CHN 11.0/12.5 engine are obtained. The analysis of the combustion performance and heat release of diesel with a preliminary high-temperature effect on the fuel was carried out. Indicator diagrams, graphs of heat release, the maximum average temperature of gases in the engine cylinder, and graphs of active and total heat release were constructed. The experimental data showed a decrease in the ignition delay period, the maximum cycle temperature in the engine cylinders, and an acceleration of the start of heat release and combustion process. The values of the parameters of the diesel fuel combustion process are obtained.\u0000Discussion and Conclusion. On the basis of the conducted studies, the dependences of the parameters of the combustion process of a diesel engine with fuel heating to high temperatures are revealed. Indicator diagrams allow drawing a conclusion about the influence of the fuel heating temperature on the intensification of the combustion process. There is an acceleration of the beginning of heat release, a decrease in the rate of pressure build-up and in the rigidity of the engine.","PeriodicalId":53796,"journal":{"name":"Engineering Technologies and Systems","volume":"1 1","pages":""},"PeriodicalIF":0.3,"publicationDate":"2021-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88878786","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Knowledge Modeling in Troubleshooting","authors":"V. Dimitrov, L. Borisova","doi":"10.15507/2658-4123.031.202103.364-379","DOIUrl":"https://doi.org/10.15507/2658-4123.031.202103.364-379","url":null,"abstract":"Introduction. The article describes the approach to solving the problem of complex technical system troubleshooting based on expert knowledge modeling. Intelligent information systems are widely used to solve the problems of diagnostics of multilevel systems including combine harvesters. The formal description of the subject domain knowledge is the framework for building the knowledge base of these systems. The sequence of creating an expert system knowledge base in accordance with production rules is considered.\u0000Materials and Methods. The approach is founded on the fault function table. As the object of diagnostics, one of the subsystems of the combine harvester electric equipment “opening the hopper roof flaps” is considered. The basis for constructing a sequence of elementary checks is a system of logical equations describing both the serviceable and possible faulty states of the subsystem.\u0000Results. A structural logic model is developed. As a result of analyzing the fault function table, the sets of elementary checks are determined. Four criteria have been used to analyze the weight of these checks. The authors have determined optimal sequence of checks and have developed a decision tree, which allows finding the cause of the malfunction and is the basis for creating the knowledge base of an intelligent information system. A fragment of the knowledge base is given.\u0000Discussion and Conclusion. The proposed approach of expert knowledge modelling increases the efficiency of the unit for troubleshooting of the intelligent decision support system. It makes possible to structure the base of expertise and establishing the optimal sequence of elementary checks. This allows determining the optimal sequence of application of the knowledge base production rule that makes it possible to reduce the time of restoring the serviceability of combines.","PeriodicalId":53796,"journal":{"name":"Engineering Technologies and Systems","volume":"27 1","pages":""},"PeriodicalIF":0.3,"publicationDate":"2021-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90341907","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study of a Stripper Header for Grain Harvesting as a Vibrating System","authors":"V. Savin","doi":"10.15507/2658-4123.031.202103.403-413","DOIUrl":"https://doi.org/10.15507/2658-4123.031.202103.403-413","url":null,"abstract":"Introduction. Grain losses caused by stripping defects are the main problem to be solved in designing a stripper header. To reduce these losses, a design of a stripper header with a vibration drive is proposed. This device combines the processes of stripping grain crops and the vibration effect of the stripping fingers upon the ears of plants. The most important stage of the mathematical description of these processes is composing the differential equation of the stripping fingers motion.\u0000Materials and Methods. A computational-graphic diagram of an oscillatory system with one degree of freedom is proposed. To compose the differential equation of the stripping fingers motion, a method based on the application of the Lagrange equation was used. The oscillations of the system under studying arise from the motion of a point in the system according to a given law. The problem of kinematic excitation is reduced to the problem of force perturbation. This stage of the study was carried out without taking into account the resistance forces.\u0000Results. An equation for motion of stripping fingers making vibrational reciprocating movements is obtained. It is proposed to select the elastic element in the design scheme and consider a more general case of the stripping fingers movement. In this case, the movement of the stripping fingers is considered to be difficult. A characteristic feature of the mathematical description is the presence of a generalized force of potential forces. The differential equation of motion of a comb in the presence of an elastic element and the solution of this equation are composed.\u0000Discussion and Conclusion. Forced oscillations of a system without resistance, excited by a harmonic disturbing force, are harmonic oscillations with constant amplitude. On close values of the angular frequency of vibration of the drive output link and the root of the ratio of the stiffness coefficient of the elastic element to the stripping fingers mass, the case of resonance takes place. The system parameters must be selected so as to avoid this negative phenomenon.","PeriodicalId":53796,"journal":{"name":"Engineering Technologies and Systems","volume":"27 1","pages":""},"PeriodicalIF":0.3,"publicationDate":"2021-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85126071","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Possibilities of Obtaining Biogas from Manure and Amaranth","authors":"J. Karaeva, S. Timofeeva","doi":"10.15507/2658-4123.031.202103.336-348","DOIUrl":"https://doi.org/10.15507/2658-4123.031.202103.336-348","url":null,"abstract":"Introduction. The use of biomass allows increasing the rate of biogas formation and its specific yield. This work aims to study the kinetics of methanogenesis and determine the optimal duration of digestion and organic load, which are the main indicators of the technological process of biogas formation.\u0000Materials and Methods. The substrate (dairy manure, biomass of amaranth) was the study object. Experimental studies were carried out using a laboratory biogas plant. The computer program (certificate No. 2018662045) was used to obtain modified Gompertz models describing the kinetics of biogas formation. Based on the obtained data, the hydraulic retention time and organic loading rate (the key parameters in the design of biogas plants were determined).\u0000Results. The paper presents the experimental studies results of the biogas formation kinetics when using dry amaranth biomass. The Gompertz mathematical models were obtained. Methane-tank control parameters (hydraulic retention time and organic loading rate) were obtained for anaerobic digestion of a new substrate.\u0000Discussion and Conclusion. The use of new co-substrate Amaranthus retroflexus L. allowed increasing the specific biogas yield from dairy manure by 52.2 % and the ultrasonic pre-treatment in combination with the herbal supplement by 89.1 %. The optimal hydraulic retention time value was 10 days and organic loading rate was 4.1 kg of volatile solids per m3 of digester per day.","PeriodicalId":53796,"journal":{"name":"Engineering Technologies and Systems","volume":"263 1","pages":""},"PeriodicalIF":0.3,"publicationDate":"2021-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74538122","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessment of the Technical Condition of Electric-Controlled Diesel Injectors According to the Fuel Supply Characteristics","authors":"I. Gabitov, A. Negovora, F. Safin, Ruslan Zh. Magafurov, N. Rakov","doi":"10.15507/2658-4123.031.202102.207-226","DOIUrl":"https://doi.org/10.15507/2658-4123.031.202102.207-226","url":null,"abstract":"Introduction. Currently, there are no widely available technologies and equipment available at service stations and repair facilities to accurately assess the technical condition of Common Rail battery fuel supply system injectors. The methods implemented in practice mainly give a generalized assessment of the nozzle performance without identifying a specific defect, which entails an unjustified replacement of still working parts of electrically controlled injectors. The purpose of this article is to familiarize a wide range of specialists with a new non-slip test method for injectors with electronic control based on the evaluation of their fuel supply characteristics, which allows identifying specific malfunctions of the nozzle during the procedure of diagnostic without disassembling.\u0000Materials and Methods. The study is based on a systematic analysis of the factory methods for testing injectors, a review of modern scientific publications, the use of computer simulation in specialized programs, and experimental testing of the obtained results.\u0000Results. A method for testing and evaluating the technical condition of diesel injectors based on the fuel supply characteristics has been developed and tested that can significantly increase the information content of the diagnostic and reduce the overall labor intensity of repairing electronically controlled injectors by 24%.\u0000Discussion and Conclusion. The authors have developed and tested a measurement module and a test procedure for diesel injectors with the ability to assess the technical condition of their parts, which allows identifying and eliminating specific malfunctions of injectors without disassembling them and avoid unjustified replacement of serviceable elements during repair. The results of the study have been implemented in the Bosch Diesel Service fuel equipment repair center of Bashdiesel LLC.","PeriodicalId":53796,"journal":{"name":"Engineering Technologies and Systems","volume":"58 1","pages":""},"PeriodicalIF":0.3,"publicationDate":"2021-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82178108","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Retracted article: Kalyakulin S.Yu., Kuzmin V.V., Mitin E.V., Suldin S.P., Tyurbeeva T.B. Designing the Structure of Technological Processes Based on Synthesis. Vestnik Mordovskogo universiteta = Mordovia University Bulletin. 2018; 28(1):77–84. DOI: 10.15507/0236-2910.028.201801.077-084 (In Russ.)","authors":"","doi":"10.15507/2658-4123.031.202102.321","DOIUrl":"https://doi.org/10.15507/2658-4123.031.202102.321","url":null,"abstract":"This article by Sergey Yu. Kalyakulin (rim-tm@mail.ru), Vladimir V. Kuzmin (kvv2607@yandex.ru), Eduard V. Mitin (rimnauka@rambler.ru), Sergey P. Suldin (rimstanok@mail.ru), Tatyana B. Tyurbeeva (turbeev@mail.ru) has been retracted (i.e. withdrawn from the press) by the editor with permission of the publisher.\u0000The reason for the article retraction is detection of large-scale borrowings from the article: Kuzmin V.V., Maksimovskiy D.E. Choice of Technological Bases on the Basis of the Decision of a Direct Problem of the Dimensional Analysis. Vestnik MGTU STANKIN = MSTU STANKIN Bulletin. 2012; (2):64-69. (In Russ.)","PeriodicalId":53796,"journal":{"name":"Engineering Technologies and Systems","volume":"34 1","pages":""},"PeriodicalIF":0.3,"publicationDate":"2021-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88860370","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Retracted article: Kalyakulin S.Yu., Kuzmin V.V., Mitin E.V., Suldin S.P., Tyurbeeva T.B. Synthesis of the Structure of Technological Processes. Inzhenerernyye tekhnologii i sistemy = Engineering Technologies and Systems. 2020; 30(2):287-299. DOI: 10.15507/2658-4123.030.202002.287-299 (In Russ.)","authors":"","doi":"10.15507/2658-4123.031.202102.322","DOIUrl":"https://doi.org/10.15507/2658-4123.031.202102.322","url":null,"abstract":"This article by Sergey Yu. Kalyakulin (rim-tm@mail.ru), Vladimir V. Kuzmin (kvv2607@yandex.ru), Eduard V. Mitin (rimnauka@rambler.ru), Sergey P. Suldin (rimstanok@mail.ru), Tatyana B. Tyurbeeva (turbeev@mail.ru) has been retracted (i.e. withdrawn from the press) by the editor with permission of the publisher.\u0000The reason for the article retraction is detection of large-scale borrowings from the book: Kuzmin V.V., Skhirtladze A.G. [Mathematical Modeling of Technological Processes of Assembly and Machining of Mechanical Engineering Products]. Moscow: Higher School Publ.; 2008. 280 p. ISBN: 978-5-06-004837-7 (In Russ.)","PeriodicalId":53796,"journal":{"name":"Engineering Technologies and Systems","volume":"3 1","pages":""},"PeriodicalIF":0.3,"publicationDate":"2021-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90957493","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Application of the Discontinuous Galerkin Method to the Study of the Dynamics of Temperature and Pressure Changes in a Formation with an Injection Well and a Hydraulic Fracture","authors":"R. V. Zhalnin, V. F. Masyagin, E. E. Peskova, V. Tishkin","doi":"10.15507/2658-4123.031.202101.161-174","DOIUrl":"https://doi.org/10.15507/2658-4123.031.202101.161-174","url":null,"abstract":"Introduction. In this article, the problem of temperature distribution in an oil-bearing formation with a hydraulic fracture and a vertical injection well is numerically modeled.\u0000Materials and Methods. To describe the process of temperature distribution in the formation under the action of the fluid injected into the formation, the Fourier-Kirchhoff equation of convective heat transfer is used. To solve this equation, the discontinuous Galerkin method on staggered unstructured grids is used. To describe the process of pressure change in the formation under the action of the injection well, an equation is used that is obtained based on the continuity equation and Darcy’s law. To solve it, the discontinuous Galerkin method on an unstructured triangular grid is used. To parallelize the numerical algorithm, the MPI library is used.\u0000Results. The article presents a numerical algorithm and the results of modeling the dynamics of the temperature fields in an oil reservoir with a hydraulic fracture and a vertical injection well.\u0000Discussion and Conclusion. A numerical algorithm based on the discontinuous Galerkin method for math modeling of the temperature and pressure fields in a oil-bearing formation with a hydraulic fracture and injection well was developed and implemented. The results obtained for the distribution of temperature and pressure in the fracture are adequate and in good agreement with the specified initial-boundary conditions. Further work in this direction involves modeling on tetrahedral unstructured meshes for a more accurate study of the ongoing processes.","PeriodicalId":53796,"journal":{"name":"Engineering Technologies and Systems","volume":"1 1","pages":""},"PeriodicalIF":0.3,"publicationDate":"2021-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77606196","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}