Combustion Engines最新文献

Comparison of the strength of popular thermoplastic materials used in 3D printing - PLA, ABS and PET-G 3D打印中常用热塑性材料--聚乳酸（PLA）、丙烯腈-丁二烯-苯乙烯（ABS）和聚对苯二甲酸乙二酯（PET-G）的强度比较

Combustion Engines Pub Date : 2024-07-19 DOI: 10.19206/ce-189386

Beniamin Stecuła, Jacek Sitko, K. Stecuła, Mirosław Witkowski, Bartosz Orzeł

{"title":"Comparison of the strength of popular thermoplastic materials used in 3D printing - PLA, ABS and PET-G","authors":"Beniamin Stecuła, Jacek Sitko, K. Stecuła, Mirosław Witkowski, Bartosz Orzeł","doi":"10.19206/ce-189386","DOIUrl":"https://doi.org/10.19206/ce-189386","url":null,"abstract":"This paper presents the results of a comparative analysis of three prevalent materials used in 3D printing. PLA (Polylactic Acid), ABS (Acrylonitrile Butadiene Styrene), and PET-G (Polyethylene Terephthalate Glycol). The study includes strength testing using a tensile testing machine. Beginning with the selection of the input material used in 3D printing process, the research aimed to provide insights into the strength properties of these materials. Autodesk Fusion 360 software was used for the precise design of the 3D model, ensuring suitability for subsequent tensile testing. The physical samples were then printed using 3D printing technology. The samples were subjected to a strength examination using a tensile testing machine. The data collection phase recorded and compiled the results of each strength test, forming the foundation for a comprehensive analysis. Using statistical methods and comparative analyzes, the data were thoroughly examined, allowing the derivation of conclusive observations and insights into the comparative strengths of PLA, ABS, and PET-G. The findings not only contribute to a deeper understanding of material performance, but also provide a guide for material selection in 3D printing applications, guiding future research endeavors and industry applications in the ever-evolving landscape of additive manufacturing.","PeriodicalId":34258,"journal":{"name":"Combustion Engines","volume":"114 45","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141822022","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

Combustion Engines Pub Date : 2024-07-10 DOI: 10.19206/ce-190606

Zbigniew Stępień

引用次数: 0

Analysis of effects of pre-chamber orifices on torch flame behaviours in lean-burn gas engines 分析前腔孔口对贫燃燃气发动机火炬火焰行为的影响

Combustion Engines Pub Date : 2024-07-09 DOI: 10.19206/ce-188112

Takahide Aoyagi, Takuya Wakasugi, Daisuke Tsuru, Hiroshi Tashima

{"title":"Analysis of effects of pre-chamber orifices on torch flame behaviours in lean-burn gas engines","authors":"Takahide Aoyagi, Takuya Wakasugi, Daisuke Tsuru, Hiroshi Tashima","doi":"10.19206/ce-188112","DOIUrl":"https://doi.org/10.19206/ce-188112","url":null,"abstract":"Fuel conversion from heavy oil to natural gas is favoured as a quick remedy for GHG re-duction from industrial engines in ship propulsion and power generation fields thanks to fewer carbon contents in natural gas. In medium-speed gas engines, the ejection of torch flame from a pre-chamber is often used to promote flame propagation within a main com-bustion chamber. Although orifice specifications affect the ejection behaviour of the torch flame and the following combustion in the main chamber, the effects are difficult to fully understand. Some of the authors developed a constant-volume combustion vessel that simu-lated the combustion chamber around the top dead centre of a pre-chamber type gas engine and observed the effects of orifice specifications on the torch flame ejection and the com-bustion in the main chamber. Still, the correlation was not concluded due to the lack of physical examination. In the paper, the above measurement results were confirmed by using RANS-type CFD considering the larger scale of the target engines, and the physical back-ground of the effects of orifice specifications was successfully reproduced.","PeriodicalId":34258,"journal":{"name":"Combustion Engines","volume":"117 43","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141665332","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

Benefits of using titanium alloy as the construction material of the connecting rod and piston in the SI engine 使用钛合金作为 SI 发动机连杆和活塞结构材料的好处

Combustion Engines Pub Date : 2024-07-09 DOI: 10.19206/ce-189830

Tomasz Kosztyła

引用次数: 0

Effects of passive pre-chamber jet ignition on knock combustion at hydrogen engine 被动预室喷射点火对氢气发动机爆震燃烧的影响

Combustion Engines Pub Date : 2024-07-03 DOI: 10.19206/ce-189738

F. Szwajca, Cezary Gawrysiak, I. Pielecha

引用次数: 0

Modeling of thermodynamic processes in internal combustion engine cylinder during cranking in compression measurement tests 压缩测量试验中曲柄转动期间内燃机气缸热力学过程建模

Combustion Engines Pub Date : 2024-07-01 DOI: 10.19206/ce-187380

A. Khrulev, Oleksii Saraiev, Iryna Yuryevna Saraieva, Oleksandr Vorobiov

{"title":"Modeling of thermodynamic processes in internal combustion engine cylinder during cranking in compression measurement tests","authors":"A. Khrulev, Oleksii Saraiev, Iryna Yuryevna Saraieva, Oleksandr Vorobiov","doi":"10.19206/ce-187380","DOIUrl":"https://doi.org/10.19206/ce-187380","url":null,"abstract":"The thermodynamics of in-cylinder processes of the internal combustion engine in cranking mode when measuring compression were examined. Analysis of various theoretical models and comparison of known data showed that the problems of constructing mathematical models of the engine operating cycle remain unresolved. The vast majority of practical data and recommendations for measuring cylinder compression are based on empirical knowledge, numerous experiments and tests. In accordance with this, there is a need for computational models of the compression measurement process and their theoretical justification. To solve the identified problems, a mathematical model of the thermodynamic processes in the cylinder was developed. Unlike existing ones, the model describes the processes in the cylinder step by step, taking into account the real nature of the intake-exhaust processes, air leakage through the interfaces of parts and heat exchange with the walls. Using modeling, the main patterns of changes in compression depending on the modes, the nature of damage to the associated parts of the valve mechanism and cylinder-piston group, the amount of leakage and engine temperature were found. Based on the results of the study, the properties of the model which make its use effective in diagnosing and monitoring the technical condition of engines in operation were concluded.","PeriodicalId":34258,"journal":{"name":"Combustion Engines","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141691329","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

The problem of cold start emissions from vehicles 车辆冷启动排放问题

Combustion Engines Pub Date : 2024-06-07 DOI: 10.19206/ce-186471

P. Laskowski, M. Zimakowska-Laskowska, Matej Jan, Piotr Wiśniowski

{"title":"The problem of cold start emissions from vehicles","authors":"P. Laskowski, M. Zimakowska-Laskowska, Matej Jan, Piotr Wiśniowski","doi":"10.19206/ce-186471","DOIUrl":"https://doi.org/10.19206/ce-186471","url":null,"abstract":"The progression of passenger vehicles is progressing, and regulations are continually being revised, resulting in a decrease in car exhaust emissions. The European Commission has revised the RDE test procedure to include exhaust emissions during a cold start, as part of package 3. The article carried out simulations using COPERT software, which uses tests based on WLTP, assuming ambient temperatures from -10◦C to +20◦C, at intervals of 5◦C. This paper aims to present the results of mathematically modelling the influence of ambient temperature on the cold-start emissions of carbon dioxide (CO2), nitrous oxide (N2O), methane (CH4), nitrogen oxides (NOx), non-methane volatile organic compounds (NMVOC), hydrocarbons (treated as Volatile organic compounds - VOC), total particulate matter (TSP) and particle number (PN) in passenger cars and light-duty vehicles. The modelling results show that a change in ambient temperature significantly affects carbon dioxide (CO2), nitrous oxide (N2O), methane (CH4), nitrogen oxides (NOx), non-methane volatile organic compounds (NMVOC), hydrocarbons (treated as Volatile organic compounds - VOC), total particulate matter (TSP) and particle number (PN) in cold-start emissions.","PeriodicalId":34258,"journal":{"name":"Combustion Engines","volume":" 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141370749","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

Prospects for the development of drivetrain systems in trucks 卡车传动系统的发展前景

Combustion Engines Pub Date : 2024-06-05 DOI: 10.19206/ce-186564

Grzegorz Kubica, Stefan Lageweg

引用次数: 0

Response of hydrogen charging diffusion of the austenitic stainless steel AISI 310s 奥氏体不锈钢 AISI 310s 的充氢扩散响应

Combustion Engines Pub Date : 2024-06-04 DOI: 10.19206/ce-186591

M. Rutkowska-Gorczyca, M. Dziubek, M. Wiśniewski

引用次数: 0

Selection of energy storage systems for a special purpose rail vehicle based on simulation analysis 基于仿真分析为专用轨道车辆选择储能系统

Combustion Engines Pub Date : 2024-05-24 DOI: 10.19206/ce-188113

Wojciech Jakuszko, Karol Bryk, Dawid Gallas, Paweł Stobnicki, Piotr Tarnawski

{"title":"Selection of energy storage systems for a special purpose rail vehicle based on simulation analysis","authors":"Wojciech Jakuszko, Karol Bryk, Dawid Gallas, Paweł Stobnicki, Piotr Tarnawski","doi":"10.19206/ce-188113","DOIUrl":"https://doi.org/10.19206/ce-188113","url":null,"abstract":"The issue of power supply to electric rail vehicles leads to a separation of the rail network into electrified and unelectrified portions, where the sections lacking electrification exclude the operation of electric rail vehicles powered from the overhead lines. The potential solution to this problem was found in adding energy storage systems to electric rail vehicles, to allow them some range of travel beyond the electrified lines. A simulation analysis of a special purpose rail vehicle travelling across a non-electrified section of railway line was conducted to assess the energy consumption rate and the necessary energy storage capacity. Three energy storage solutions were simulated, showing the travel range they can provide, with the aim of finding the lowest battery capacity solution that would still allow the vehicle to safely complete the simulated drive. The final selection of energy storage system capacity was done based on the assumed expected range outside electrified railway weighed against the mass and cost of the extra energy storage system added to the vehicle. For a vehicle with a mass of 65 tons a battery system with a capacity of 600 Ah was found to be sufficient.","PeriodicalId":34258,"journal":{"name":"Combustion Engines","volume":"86 24","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141101529","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