Pub Date : 1900-01-01DOI: 10.25206/1813-8225-2022-181-13-18
L. Volkova
The main malfunctions of diesel and marine diesel injectors with an increase in the needle stroke by more than 50 % of the standard value are described — an increase in the temperature of the nozzle of the sprayer, a breakthrough of cylinder gases into the cavity of the sprayer and the formation of coke, a decrease in the pressure of the injected fuel. A method is proposed for determining the maximum stroke of the needle by measuring the length of the needle shank and its conditional reduction when the needle is placed on the saddle. The device and the principle of operation of the device for determining the maximum stroke of the spray needle are shown. Drawings of the main parts of the universal device for determining the needle stroke of sprayers with a diameter from 8 to 18 mm of diesel and marine diesel engines have been developed, a prototype is made. The method of determining the motion (stroke) of the needle of the spray nozzles of diesel engines using the developed device is given.
{"title":"Development of universal device for determining the needle stroke in diesel and marine diesel sprayers","authors":"L. Volkova","doi":"10.25206/1813-8225-2022-181-13-18","DOIUrl":"https://doi.org/10.25206/1813-8225-2022-181-13-18","url":null,"abstract":"The main malfunctions of diesel and marine diesel injectors with an increase in the needle stroke by more than 50 % of the standard value are described — an increase in the temperature of the nozzle of the sprayer, a breakthrough of cylinder gases into the cavity of the sprayer and the formation of coke, a decrease in the pressure of the injected fuel. A method is proposed for determining the maximum stroke of the needle by measuring the length of the needle shank and its conditional reduction when the needle is placed on the saddle. The device and the principle of operation of the device for determining the maximum stroke of the spray needle are shown. Drawings of the main parts of the universal device for determining the needle stroke of sprayers with a diameter from 8 to 18 mm of diesel and marine diesel engines have been developed, a prototype is made. The method of determining the motion (stroke) of the needle of the spray nozzles of diesel engines using the developed device is given.","PeriodicalId":107042,"journal":{"name":"Omsk Scientific Bulletin","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131765065","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}
Pub Date : 1900-01-01DOI: 10.25206/1813-8225-2019-164-18-22
M. I. Biserikan, S. V. Petrochenko, K. V. Averkov
{"title":"Experimental study of fatigue life of wagon wheel of increased hardness when interacting with rail","authors":"M. I. Biserikan, S. V. Petrochenko, K. V. Averkov","doi":"10.25206/1813-8225-2019-164-18-22","DOIUrl":"https://doi.org/10.25206/1813-8225-2019-164-18-22","url":null,"abstract":"","PeriodicalId":107042,"journal":{"name":"Omsk Scientific Bulletin","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132166694","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}
Pub Date : 1900-01-01DOI: 10.25206/1813-8225-2022-183-90-97
S. Biryukov, L. V. Tyukina, A. Tyukin
In the work, dual electroinductive spherical sensors, which are a constructive combination of two double sensors into one, are subjected to experimental studies in a non-uniform electric field. Dual sensors are an integral part of a new method for measuring inhomogeneous electric fields by average value. Experimental studies are aimed at confirming the possibility of using dual sensors in inhomogeneous electric fields and the method of measuring the electric field strength by the average value. To carry out experiments in a non-uniform electric field, a high-voltage measuring setup is created. The measuring setup made it possible to obtain the static characteristics of a dual sensor in an inhomogeneous electric field. Comparison of the static characteristics obtained in a homogeneous and inhomogeneous field makes it possible to estimate their errors and compare these errors with theoretically calculated ones. The comparison results have showed that the discrepancy between the static characteristics does not exceed +1,5 %, and the discrepancy in the errors of the dual sensor, estimated from experimental data in an inhomogeneous field and obtained theoretically, does not exceed ±2 % in absolute units. The obtained research results allow us to confirm the adequacy of the theory underlying the theoretical provisions laid down in the calculations of dual electric induction spherical strength sensors of the electric field.
{"title":"Experimental studies of dual electric induction spherical electric field intensity sensor in inhomogeneous field of point source","authors":"S. Biryukov, L. V. Tyukina, A. Tyukin","doi":"10.25206/1813-8225-2022-183-90-97","DOIUrl":"https://doi.org/10.25206/1813-8225-2022-183-90-97","url":null,"abstract":"In the work, dual electroinductive spherical sensors, which are a constructive combination of two double sensors into one, are subjected to experimental studies in a non-uniform electric field. Dual sensors are an integral part of a new method for measuring inhomogeneous electric fields by average value. Experimental studies are aimed at confirming the possibility of using dual sensors in inhomogeneous electric fields and the method of measuring the electric field strength by the average value. To carry out experiments in a non-uniform electric field, a high-voltage measuring setup is created. The measuring setup made it possible to obtain the static characteristics of a dual sensor in an inhomogeneous electric field. Comparison of the static characteristics obtained in a homogeneous and inhomogeneous field makes it possible to estimate their errors and compare these errors with theoretically calculated ones. The comparison results have showed that the discrepancy between the static characteristics does not exceed +1,5 %, and the discrepancy in the errors of the dual sensor, estimated from experimental data in an inhomogeneous field and obtained theoretically, does not exceed ±2 % in absolute units. The obtained research results allow us to confirm the adequacy of the theory underlying the theoretical provisions laid down in the calculations of dual electric induction spherical strength sensors of the electric field.","PeriodicalId":107042,"journal":{"name":"Omsk Scientific Bulletin","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132299350","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}
Pub Date : 1900-01-01DOI: 10.25206/1813-8225-2022-183-14-17
A. Novikov, A. R. Putintseva, A. Tsukanov, D. S. Akhmedov
The purpose of this article is to study the features of the passage of ultrasonic vibrations through inhomogeneous biological media. To achieve the goal, a mathematical model for the propagation of ultrasonic vibrations in heterogeneous media has been developed, and clinical studies have been carried out. It is shown that the proposed calculation method can be used to evaluate the passage of ultrasonic vibrations through inhomogeneous biological media. Recommendations on the choice of topographic landmarks of ultrasound exposure for noninvasive sanitation of urological catheters are made.
{"title":"Study of the passage of low-frequency ultrasonic vibrations through heterogeneous biological media during ultrasonic sanitation of urological catheters","authors":"A. Novikov, A. R. Putintseva, A. Tsukanov, D. S. Akhmedov","doi":"10.25206/1813-8225-2022-183-14-17","DOIUrl":"https://doi.org/10.25206/1813-8225-2022-183-14-17","url":null,"abstract":"The purpose of this article is to study the features of the passage of ultrasonic vibrations through inhomogeneous biological media. To achieve the goal, a mathematical model for the propagation of ultrasonic vibrations in heterogeneous media has been developed, and clinical studies have been carried out. It is shown that the proposed calculation method can be used to evaluate the passage of ultrasonic vibrations through inhomogeneous biological media. Recommendations on the choice of topographic landmarks of ultrasound exposure for noninvasive sanitation of urological catheters are made.","PeriodicalId":107042,"journal":{"name":"Omsk Scientific Bulletin","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131970471","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}
Pub Date : 1900-01-01DOI: 10.25206/1813-8225-2023-186-13-18
S. Korneev, S. V. Pashukevich
In the work, laboratory tests are carried out to assess the wear of rolling bearings on the SMC-2 friction machine, depending on the granulometric composition (up to 1 and up to 7 microns) and the concentration of molybdenum disulfide added to the base industrial oil I-GT-A-100 (I-50A), produced according to GOST 20799- 2022. During the tests, numerical values of the wear condition of four bearings are obtained, the average value is indicated. The dependences of the concentration of molybdenum disulfide with a granulometric composition of up to 1 and up to 7 microns on the wear level and the average temperature of the bearing during the tests are determined.
{"title":"The influence of granulometric composition of molybdenum disulfide on lubrication of rolling bearings","authors":"S. Korneev, S. V. Pashukevich","doi":"10.25206/1813-8225-2023-186-13-18","DOIUrl":"https://doi.org/10.25206/1813-8225-2023-186-13-18","url":null,"abstract":"In the work, laboratory tests are carried out to assess the wear of rolling bearings on the SMC-2 friction machine, depending on the granulometric composition (up to 1 and up to 7 microns) and the concentration of molybdenum disulfide added to the base industrial oil I-GT-A-100 (I-50A), produced according to GOST 20799- 2022. During the tests, numerical values of the wear condition of four bearings are obtained, the average value is indicated. The dependences of the concentration of molybdenum disulfide with a granulometric composition of up to 1 and up to 7 microns on the wear level and the average temperature of the bearing during the tests are determined.","PeriodicalId":107042,"journal":{"name":"Omsk Scientific Bulletin","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132280269","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}
Pub Date : 1900-01-01DOI: 10.25206/1813-8225-2019-163-5-10
S. Busarov, D. Titov, I. S. Demin, A. V. Nedovenchany
{"title":"Evaluation of effect of leakage in cylinder-piston seals on working process of low-speed long stroke piston units","authors":"S. Busarov, D. Titov, I. S. Demin, A. V. Nedovenchany","doi":"10.25206/1813-8225-2019-163-5-10","DOIUrl":"https://doi.org/10.25206/1813-8225-2019-163-5-10","url":null,"abstract":"","PeriodicalId":107042,"journal":{"name":"Omsk Scientific Bulletin","volume":"38-40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116768701","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}
Pub Date : 1900-01-01DOI: 10.25206/1813-8225-2019-165-46-53
S. Biryukov, A. Tyukin, Siberian State Automobile
{"title":"Theoretical studies of multi-electrode sensor of components of electric field intensity vector in form of square plate of conductive material","authors":"S. Biryukov, A. Tyukin, Siberian State Automobile","doi":"10.25206/1813-8225-2019-165-46-53","DOIUrl":"https://doi.org/10.25206/1813-8225-2019-165-46-53","url":null,"abstract":"","PeriodicalId":107042,"journal":{"name":"Omsk Scientific Bulletin","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116307493","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}
Pub Date : 1900-01-01DOI: 10.25206/1813-8225-2019-167-72-76
D. S. Polozhentsev, D. Dzhukich, D. N. Zakharov
{"title":"Control system of spacecraft solar array drive assembly actuator","authors":"D. S. Polozhentsev, D. Dzhukich, D. N. Zakharov","doi":"10.25206/1813-8225-2019-167-72-76","DOIUrl":"https://doi.org/10.25206/1813-8225-2019-167-72-76","url":null,"abstract":"","PeriodicalId":107042,"journal":{"name":"Omsk Scientific Bulletin","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116144689","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}
Pub Date : 1900-01-01DOI: 10.25206/1813-8225-2022-181-7-12
V. Khomchenko
The article discusses the kinematic scheme of the lever crank-slider mechanism of the third class, on the basis of which the executive mechanism of a mechanical non-clutch press is proposed under the patent for the invention (RF patent No. 2752399). Switching mode of operation of the press is carried out by moving the control slider from one stationary position to another. The kinematic parameters of the lever mechanism are assigned in such a way that in operating mode the law of motion of the working body of the press is close to the law of motion of the output link of the fourlink central crank-slider mechanism, and in the idle mode — the working body makes small movements (approximate stand) at full rotation of the crank. The analytical dependencies necessary for calculating the mechanism and the corresponding example are given.
{"title":"Kinematic synthesis of non-clutch mechanical press based on lever mechanism of the third class","authors":"V. Khomchenko","doi":"10.25206/1813-8225-2022-181-7-12","DOIUrl":"https://doi.org/10.25206/1813-8225-2022-181-7-12","url":null,"abstract":"The article discusses the kinematic scheme of the lever crank-slider mechanism of the third class, on the basis of which the executive mechanism of a mechanical non-clutch press is proposed under the patent for the invention (RF patent No. 2752399). Switching mode of operation of the press is carried out by moving the control slider from one stationary position to another. The kinematic parameters of the lever mechanism are assigned in such a way that in operating mode the law of motion of the working body of the press is close to the law of motion of the output link of the fourlink central crank-slider mechanism, and in the idle mode — the working body makes small movements (approximate stand) at full rotation of the crank. The analytical dependencies necessary for calculating the mechanism and the corresponding example are given.","PeriodicalId":107042,"journal":{"name":"Omsk Scientific Bulletin","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116044187","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}
Pub Date : 1900-01-01DOI: 10.25206/1813-8225-2021-179-46-49
D. Y. Potapova
The issue of improving the efficiency of the functioning of airlines in the air transportation market is considered. A statistical and mathematical model has been developed and allows us to make a prognosis of the main indicators of the airline’s activity. This model is a distribution of a random variable, which distribution density is described by the Gauss’ Law. The influence of the correlation coefficient value on the accuracy of the prognosis, the average quadratic values on the mathematical expectation of the predicted value is shown. The given model allows to increase the accuracy of the prognosis of the indicators of the airline work.
{"title":"The task of prognostication main indicators of air company","authors":"D. Y. Potapova","doi":"10.25206/1813-8225-2021-179-46-49","DOIUrl":"https://doi.org/10.25206/1813-8225-2021-179-46-49","url":null,"abstract":"The issue of improving the efficiency of the functioning of airlines in the air transportation market is considered. A statistical and mathematical model has been developed and allows us to make a prognosis of the main indicators of the airline’s activity. This model is a distribution of a random variable, which distribution density is described by the Gauss’ Law. The influence of the correlation coefficient value on the accuracy of the prognosis, the average quadratic values on the mathematical expectation of the predicted value is shown. The given model allows to increase the accuracy of the prognosis of the indicators of the airline work.","PeriodicalId":107042,"journal":{"name":"Omsk Scientific Bulletin","volume":"101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121397897","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}
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