Scientific Journal of Silesian University of Technology-Series Transport最新文献_第10页

POSSIBILITIES OF IMPROVING A RAIL VEHICLE RUNNING SAFETY WITH INDEPENDENTLY ROTATING WHEELS 采用独立旋转车轮提高轨道车辆运行安全性的可能性

IF 0.6

Scientific Journal of Silesian University of Technology-Series Transport Pub Date : 2022-06-30 DOI: 10.20858/sjsutst.2022.115.7

E. Mikhailov, S. Semenov, Hanna Shvornikova, J. Dižo, M. Blatnický, P. Droździel, K. Kravchenko

{"title":"POSSIBILITIES OF IMPROVING A RAIL VEHICLE RUNNING SAFETY WITH INDEPENDENTLY ROTATING WHEELS","authors":"E. Mikhailov, S. Semenov, Hanna Shvornikova, J. Dižo, M. Blatnický, P. Droździel, K. Kravchenko","doi":"10.20858/sjsutst.2022.115.7","DOIUrl":"https://doi.org/10.20858/sjsutst.2022.115.7","url":null,"abstract":"This work is focused on the possible ways of improving the running safety of a railway vehicle, which uses IRWs (independently rotating wheels) in a bogie. It discusses the main positive and negative properties of an application of IRWs for a railway vehicle while it is running in a curve. There are evaluated running properties of a railway vehicle in terms of safety for IRWs and a standard wheelset (SW). It is assumed that a wheelset design with IRWs will reduce the risk of derailment of a railway vehicle in a curve with a smaller radius because it will be reached a more favourable distribution of decisive forces in the wheel/rail contact. A designed wheelset with IRWs differs from other IRWs designs; in this case, only a flange can rotate independently from a wheel treat surface about the axis of rotation. Further, this research presents an analysis of a friction forces distribution of the friction forces in a contact of a flange and a rail head and a comparison with an SW. The obtained results allow concluding that it is advisable to use the wheels with the perspective wheel design (including independently rotating) to reduce the resistance to movement and improve the running properties of a railway vehicle for safety.","PeriodicalId":43740,"journal":{"name":"Scientific Journal of Silesian University of Technology-Series Transport","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45514700","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}

引用次数: 0

GOOD PRACTICES IN THE CARGO PREPARATION PROCESS IN INTERMODAL TRANSPORT 多式联运货物准备过程的良好规范

IF 0.6

Scientific Journal of Silesian University of Technology-Series Transport Pub Date : 2022-06-30 DOI: 10.20858/sjsutst.2022.115.14

Jan Warczek, Rafał Wójak

引用次数: 0

INVESTIGATING THE PROTECTION SYSTEM OF ELECTRIC MOTORS BASED ON ITS MAIN WORKING PARAMETERS 根据电动机的主要工作参数，对电动机的保护系统进行了研究

IF 0.6

Scientific Journal of Silesian University of Technology-Series Transport Pub Date : 2022-06-30 DOI: 10.20858/sjsutst.2022.115.5

E. Manafov, I. Isgandarov, F. Huseynov

引用次数: 0

SIMULATION TESTS OF FLEET VEHICLES PERIODIC INSPECTIONS TIMELINESS: A CASE STUDY 车队车辆定期检查及时性的模拟试验:一个案例研究

IF 0.6

Scientific Journal of Silesian University of Technology-Series Transport Pub Date : 2022-06-30 DOI: 10.20858/sjsutst.2022.115.6

T. Matyja, Z. Stanik

引用次数: 0

EFFECT OF KARANJA BIODIESEL BLENDS ON THE CHARACTERISTICS OF DIESEL ENGINE karanja生物柴油混合物对柴油机性能的影响

IF 0.6

Scientific Journal of Silesian University of Technology-Series Transport Pub Date : 2022-06-30 DOI: 10.20858/sjsutst.2022.115.17

S. Yadav, Amit Kumar, Abhilasha Chaudhary

{"title":"EFFECT OF KARANJA BIODIESEL BLENDS ON THE CHARACTERISTICS OF DIESEL ENGINE","authors":"S. Yadav, Amit Kumar, Abhilasha Chaudhary","doi":"10.20858/sjsutst.2022.115.17","DOIUrl":"https://doi.org/10.20858/sjsutst.2022.115.17","url":null,"abstract":"Extensive research is being conducted to create and use a wide range of alternative fuels to accommodate the world's growing energy needs. The objective of this experimental investigation was to analyze the effects of Karanja biodiesel blends on the performance, combustion, and emission characteristics of a compression ignition (CI) engine vis-a-vis neat diesel. Important physical parameters of Karanja oil were examined experimentally after transesterification and determined to be within acceptable limits. BTE of Karanja biodiesel blends was about 3-8% lower than diesel. For Karanja biodiesel blends, BSFC was about 2-9% higher than diesel but exhaust gas temperature and volumetric efficiency were lower. Emissions characteristics such as nitrogen oxides, hydrocarbons, and carbon monoxide were also analyzed for various tested fuels. Karanja biodiesel blends resulted in lesser CO and HC formation. Nonetheless, NOx emissions were around 10% greater than diesel. Peak cylinder pressure, heat release rate, and maximum rate of pressure rise versus crank angle were among the combustion characteristics parameters considered in this study. Combustion analysis revealed that for Karanja biodiesel blends heat release rate and peak cylinder pressure were lower than for neat diesel. Findings indicate that Karanja biodiesel can be considered a viable diesel engine fuel.","PeriodicalId":43740,"journal":{"name":"Scientific Journal of Silesian University of Technology-Series Transport","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42877166","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}

引用次数: 1

COMPLEX EVALUATION OF THE EFFICIENCY OF URBAN CONSOLIDATION CENTERS AT THE MICRO LEVEL 微观层面城市整合中心效率的复杂评价

IF 0.6

Scientific Journal of Silesian University of Technology-Series Transport Pub Date : 2022-06-30 DOI: 10.20858/sjsutst.2022.115.10

L. Savchenko, M. Grygorak, V. Polishchuk, Y. Vovk, O. Lyashuk, I. Vovk, Roman Khudobei

{"title":"COMPLEX EVALUATION OF THE EFFICIENCY OF URBAN CONSOLIDATION CENTERS AT THE MICRO LEVEL","authors":"L. Savchenko, M. Grygorak, V. Polishchuk, Y. Vovk, O. Lyashuk, I. Vovk, Roman Khudobei","doi":"10.20858/sjsutst.2022.115.10","DOIUrl":"https://doi.org/10.20858/sjsutst.2022.115.10","url":null,"abstract":"A methodical approach for the determination of economic and socio-environmental costs in the application of the city consolidation center at the micro level was proposed and tested on real data. Two options of urban delivery of small shipments are considered, in particular, for e-commerce - direct delivery and delivery through the micro-consolidation center. The system of indicators proposed in this work allows a detailed assessment of the economic component of direct and consolidated delivery, including transportation costs, the functioning of the consolidation center costs and costs for pedestrian delivery to the residential district customers. Socio-economic indicators allow considering the interests of other residents of the city, suffering from a dense traffic flow and harmful emissions from freight vehicles. The proposed method of integrated assessment was tested on real data of a micro district of the city. The results made it possible to estimate the proportion of each component of expenditures in the economic, socio-environmental and total costs for both delivery options. The analysis of the sensitivity of costs to changes in the input parameters showed the difference in the strength of influence, and the rating of influencing factors. The proposed method allows us to estimate the economic costs of all participants in the urban delivery process for small shipments, as well as to prove the rationality of using micro-consolidation to serve a micro district of a large city.","PeriodicalId":43740,"journal":{"name":"Scientific Journal of Silesian University of Technology-Series Transport","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44420463","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}

引用次数: 1

ROUNDABOUTS AS AESTHETIC ROAD SOLUTIONS FOR ORGANIZING LANDSCAPES 环岛作为组织景观的美学道路解决方案

IF 0.6

Scientific Journal of Silesian University of Technology-Series Transport Pub Date : 2022-06-30 DOI: 10.20858/sjsutst.2022.115.4

E. Macioszek

引用次数: 4

MODE-ROUTE CHOICE DECISIONS: A CASE STUDY OF CPEC INVESTMENT IN PAKISTAN RAILWAYS 模式路线选择决策:中巴经济走廊在巴基斯坦铁路投资的案例研究

IF 0.6

Scientific Journal of Silesian University of Technology-Series Transport Pub Date : 2022-06-30 DOI: 10.20858/sjsutst.2022.115.1

Y. Ali, Muhammad Sabir

引用次数: 0

ANALYSIS AND EVALUATION OF THE PLANNING PROCESS IN A TRANSPORT COMPANY 分析和评估运输公司的计划流程

IF 0.6

Scientific Journal of Silesian University of Technology-Series Transport Pub Date : 2022-06-30 DOI: 10.20858/sjsutst.2022.115.3

Z. Łukasik, Aldona KUŚMIŃSKA-FIJAŁKOWSKA, S. Olszańska

{"title":"ANALYSIS AND EVALUATION OF THE PLANNING PROCESS IN A TRANSPORT COMPANY","authors":"Z. Łukasik, Aldona KUŚMIŃSKA-FIJAŁKOWSKA, S. Olszańska","doi":"10.20858/sjsutst.2022.115.3","DOIUrl":"https://doi.org/10.20858/sjsutst.2022.115.3","url":null,"abstract":"Today, route planning requires freight forwarders to make a conscious effort to identify unloading points such that the transport process is both cost- and time-efficient. At the same time, operational parameters that help to determine the validity of the chosen route must also be considered. This article aims to present the key metrics and ways of attaining them to provide a reliable determination of a transport company’s performance. Based on a selected transport company, the authors collected data on the transport routes implemented in 2020. Interpretation and analysis of the extracted information of the concerned sections were carried out and followed by alternatives. We present in this article the results of research concerning the exploitation parameters of the vehicle set. The evaluation of a given route section was indicated using selected indicators adapted to the specificity of the enterprise. The results are aimed at locating the components that have a destructive impact on the entire process. The proposed solutions serve to introduce factors that will pave way for improving the services provided. An in-depth analysis of all sections and key parameters was performed. Because of the conducted studies, abnormal parameters were identified, efficient sections were distinguished and new routes were developed in the case of previous routes that were not highly efficient and which had a possible alternative corridor. The obtained results of the research can comprise, for logistics managers, vital elements in the transport process, to which attention should be given in the course of overseeing these processes.","PeriodicalId":43740,"journal":{"name":"Scientific Journal of Silesian University of Technology-Series Transport","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41905945","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}

引用次数: 1

CLOUD MANUFACTURING: IDENTIFICATIONS AND PRIORITIZATION OF OPPORTUNITIES USING AHP 云制造：基于AHP的机会识别和优先级排序

IF 0.6

Scientific Journal of Silesian University of Technology-Series Transport Pub Date : 2022-06-30 DOI: 10.20858/sjsutst.2022.115.11

M. K. Sharma

{"title":"CLOUD MANUFACTURING: IDENTIFICATIONS AND PRIORITIZATION OF OPPORTUNITIES USING AHP","authors":"M. K. Sharma","doi":"10.20858/sjsutst.2022.115.11","DOIUrl":"https://doi.org/10.20858/sjsutst.2022.115.11","url":null,"abstract":"The origin of a cost-efficient, service-oriented, customer-centric, manufacturing system called cloud manufacturing has evolved due to advancements in cyber systems and the availability of internet facilities worldwide. However, there is a significant number of opportunities before the adoption of cloud manufacturing. Through literature survey, expert opinions from academicians and industrialists, various opportunities, namely, pay-as-use, scalability, cost efficiency, flexibility, autonomy, low-risk backup and recovery, low startup cost and location independence associated with the espousal of cloud manufacturing are identified. Further, the Analytic Hierarchy Process (AHP) model is applied to find the weights and prioritize these opportunities, thereby finding the significant key opportunities. Moreover, the consistency ratio is calculated for the accuracy and consistency of the results. As the obtained value of consistency ratio is less than .1, it shows that the result obtained is consistent and accurate. The managerial implication of these outcomes is that the results would indirectly help entrepreneurs in the adoption of cloud manufacturing.","PeriodicalId":43740,"journal":{"name":"Scientific Journal of Silesian University of Technology-Series Transport","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44743839","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}

引用次数: 0