Article
Chemistry, Physical
Tadeusz Dziubak, Leszek Bakala, Sebastian Dominik Dziubak, Kamil Sybilski, Michal Tomaszewski
Summary: This study analyzed the pollutant properties in intake air of internal combustion engines, discussed the impact of mineral dust particles on engine wear, and proposed the idea and necessity of using two-stage filters in dusty air conditions. Original methodology for determining dust absorption coefficient in a two-stage filtration system was presented.
Article
Energy & Fuels
Tadeusz Dziubak, Leszek Bakala
Summary: Research has shown that increasing the separation length and reducing the diameter of the inlet pipe in axial flow cyclones can improve separation efficiency.
Article
Engineering, Chemical
Yu Yang, Zhiying Ren, Weiping Chen, Mingzhi Fan, Youxi Lin, Zhiguang Guo
Summary: A durable superhydrophobic wire-cotton-based material (SWCM) was prepared, which demonstrated remarkable separation efficiency for water-in-oil emulsions. The material exhibited both macro-frame and micro-aperture structures. The micro-aperture, protected by the macro-frame, could withstand numerous impacts and abrasions while maintaining reliable separation efficiency.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Chemical
Jipeng Dong, Pan Zhang, Weiwen Wang, Jianlong Li, Guanghui Chen
Summary: By improving the design and structure of the elutriator, the separation efficiency of fine dust was successfully increased, reducing environmental pollution and enhancing product quality.
Article
Engineering, Chemical
Tomonori Fukasawa, Chikao Kanaoka, Isao Kimura, Li Bao, Toru Ishigami, Kunihiro Fukui
Summary: Accurate determination of physical properties of filtration media is crucial for predicting performance, as shown in the evaluation of three commercially available media. Despite differences in fiber mass and air permeability distributions, even filters close to manufacturer's values can exhibit performance variations of approximately 15% when measured for filter efficiency and particle emission rates.
CHEMICAL ENGINEERING & TECHNOLOGY
(2021)
Article
Environmental Sciences
Chenxing Pei, Weiqi Chen, Qisheng Ou, David Y. H. Pui
Summary: Air filters are essential for removing particulate pollutants from the air to provide cleaner air. However, there is limited performance monitoring for air filters, leading to uncertainty in their efficacy after replacement. This study presents a prototype of a smart filter performance monitoring system that provides real-time data on filtration efficiency, differential pressure, temperature, and humidity. Three case studies demonstrate the feasibility and advantages of the system in various applications. It not only ensures the effectiveness of air purifiers and HVAC systems for residential customers but also allows industrial customers to monitor the cleanliness of filtered air for their internal combustion engines or gas turbines. Additionally, the filter monitoring data can be used for research purposes and product improvement.
AEROSOL AND AIR QUALITY RESEARCH
(2023)
Article
Energy & Fuels
Tadeusz Dziubak
Summary: Small dust particles increase flow resistance of fibrous filter bed, shortening air filter lifespan and vehicle performance. This study experimentally determined the dust absorption coefficient k(m) of the PowerCore filter bed under two-stage filtration conditions, which is useful for predicting mileage and filter performance.
Article
Chemistry, Physical
Tadeusz Dziubak
Summary: Pleated filter paper is commonly used to filter and clean the intake air of vehicle engines. PowerCore filters, with their axial flow design, reduce pressure drop and improve filtration efficiency. This study compares the performance of PowerCore and PowerCore G2 filters with cylindrical filters, and investigates the effect of dust loading on filtration performance.
Article
Chemistry, Multidisciplinary
Melike Gungor, Sule Selcuk, Ali Toptas, Ali Kilic
Summary: A bimodal filter web, consisting of nanofibers and microfibers, was fabricated using a modified solution blowing technique. The web exhibited high filter efficiency and low pressure drop, making it a suitable alternative for air filter applications.
Article
Multidisciplinary Sciences
Md. Rafiqul Islam, Rony Mia, Ahmed Jalal Uddin
Summary: This study explored the possibility of manufacturing woven fabric with polysester-okra yarns and compared its properties with widely-used polyester-linen blend. The performance of the PO woven fabric was found to be acceptable, making it a sustainable option for the textile weaving industries.
Article
Thermodynamics
Zhiqing Zhang, Rui Dong, Dongli Tan, Lin Duan, Feng Jiang, Xiaoxue Yao, Dixin Yang, Jingyi Hu, Jian Zhang, Weihuang Zhong, Ziheng Zhao
Summary: In this study, a three-dimensional computational fluid dynamics (CFD) model of diesel particulate filter (DPF) was used to investigate the influence of key structural factors on capture performance. The results show that reducing wall thickness and increasing filter diameter, filter length, and cell density per square inch (CPSI) can lead to a reduction in pressure drop and an improvement in filtration efficiency of DPF. Furthermore, the results of grey correlation analysis suggest that wall thickness is the most significant structural factor in DPF design. This work provides important reference for optimizing DPF capture performance and extending its working time.
Article
Engineering, Multidisciplinary
Wei Wu, Hiroyoshi Sota, Toshiki Hirogaki, Eiichi Aoyama
Summary: This study focuses on the filtration application of nanofibers, showing that the trial-produced non-woven filter possesses excellent filtration abilities and can be used as a standard for manufacturing high-performance filters and face masks. However, further investigation into the manufacturing method of non-woven fabric filters is needed to satisfy both high particle filtration efficiency and low pressure loss for developing a high-performance filter.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2021)
Article
Chemistry, Analytical
Meiling Zhang, Ningting Guo, Qian Gao, Hongqiang Li, Zhangang Wang
Summary: This study designed and fabricated a circular fabric electrode using weaving technology and optimized its parameters. The experimental results showed that the fabric electrode had significant advantages and improvements in monitoring electrocardiogram signals. This research provides reference data for the commercial integration of fabric electrodes into smart textiles.
Article
Mechanics
Mukesh Bajya, Abhijit Majumdar, Bhupendra Singh Butola, Sanchi Arora, Debarati Bhattacharjee
Summary: This study compared the ballistic protection performance of soft armour panels with different structures, finding that UD laminate-based panels outperformed woven fabric panels, with UHMWPE variants performing better than para-aramid. The ideal SAP design should incorporate a heat resistant material in the front layers followed by high-modulus ballistic materials in subsequent layers.
COMPOSITE STRUCTURES
(2021)
Article
Chemistry, Multidisciplinary
Yong-Sun Kim, Hong-Gun Kim, Lee-Ku Kwac, Sang-Cheol Ko
Summary: This study conducted a simplified baffle filter shape study on the OTR filter used in a general kitchen. Simulation was performed to improve the filter's efficiency using ANSYS FLUENT and COMSOL Multiphysics, and a wind tunnel test apparatus was manufactured to minimize the error rate of dust collection efficiency. Through theoretical review, it was confirmed that dust is collected in the filter by the inertial collision method and increasing the flow velocity can enhance dust collection efficiency. The use of sub-filters and the Coanda effect were proposed and simulated to increase flow velocity and filter contact area.
APPLIED SCIENCES-BASEL
(2023)
Article
Engineering, Multidisciplinary
Tadeusz Dziubak, Tadeusz Wysocki, Sebastian Dziubak
Summary: The article analyzes the exploitation reliability of contemporary light commercial vehicles from four major brands. Using data from monitoring failures of 115 vehicles over several years, a proposed test method utilizing relative quantitative reliability measures was able to identify the most reliable vehicle brand for favorable selection in the company's future operations. The study confirmed the possibility of using this method to evaluate operational reliability of commercial vehicles in any transport company.
EKSPLOATACJA I NIEZAWODNOSC-MAINTENANCE AND RELIABILITY
(2021)
Article
Energy & Fuels
Tadeusz Dziubak, Leszek Bakala
Summary: Research has shown that increasing the separation length and reducing the diameter of the inlet pipe in axial flow cyclones can improve separation efficiency.
Article
Energy & Fuels
Tadeusz Dziubak
Summary: The study demonstrates the necessity of utilizing two-stage inlet air filters for motor vehicle engines operating under dusty conditions. Additionally, the use of several dozen cyclones for filtering inlet air in engines shows improved performance, with methods of removing dust and increasing filtration efficiency also discussed. Further research is needed to address the irregularity of suction flows from multiple cyclones in a multi-cyclone system.
Article
Chemistry, Analytical
Tadeusz Dziubak, Grzegorz Boruta
Summary: The study shows that mineral dust in the air has a significant impact on the performance and wear of military vehicle engines, highlighting the necessity of using two-stage air filters. Furthermore, it is found that increasing air resistance in the filter leads to decreased engine power and increased fuel consumption.
Article
Energy & Fuels
Tadeusz Dziubak
Summary: This paper investigates the uneven air stream distribution problem in multiple cyclones of intake air filters in special vehicles' engines. By changing the internal structure of the multi-cyclone settler and creating equal pressure drops between suction streams, the efficiency of multi-cyclone separation was increased by improving flow uniformity.
Article
Chemistry, Physical
Tadeusz Dziubak, Leszek Bakala, Sebastian Dominik Dziubak, Kamil Sybilski, Michal Tomaszewski
Summary: This study analyzed the pollutant properties in intake air of internal combustion engines, discussed the impact of mineral dust particles on engine wear, and proposed the idea and necessity of using two-stage filters in dusty air conditions. Original methodology for determining dust absorption coefficient in a two-stage filtration system was presented.
Article
Energy & Fuels
Tadeusz Dziubak
Summary: This study proposes and conducts design modifications on tangential inlet return cyclones used for inlet air filtration in off-road vehicle engines. These modifications, including changes in inlet shape and streamlined edges, resulted in increased separation efficiency, decreased pressure drop, and improved durability of engine components.
Article
Energy & Fuels
Tadeusz Dziubak, Sebastian Dominik Dziubak
Summary: This paper systematically reviews the research progress of the influence of air pollutants in the engine inlet on the accelerated wear of various engine components. It discusses the primary component of air pollution, road dust, and its effect on the abrasive wear of elements such as piston, piston rings, cylinder liner, and plain bearing. The study emphasizes the importance of dust parameters, such as grain size, hardness, and concentration, in determining the accelerated wear. Additionally, it explores the effects of wear on compression pressure, engine power, exhaust gas blow-by, oil consumption, and exhaust gas toxicity. The paper also addresses the impact of air contaminants on the performance of the air flow meter, a crucial sensor in modern engines.
Article
Energy & Fuels
Tadeusz Dziubak, Miroslaw Karczewski
Summary: The paper presents the problem of the effect of air filter pressure drop on the operating parameters of a modern internal combustion engine. It shows that increasing the air filter pressure drop leads to a decrease in engine power and an increase in fuel consumption. The study also provides the permissible resistance values for different types of vehicles and discusses the possibilities of decreasing the pressure drop of the inlet system.
Article
Energy & Fuels
Tadeusz Dziubak, Miroslaw Karczewski
Summary: This paper presents an experimental evaluation of the effect of air filter pressure drop on the composition of exhaust gases and the operating parameters of a modern internal combustion Diesel engine. It has been shown that increasing air filter pressure drop during engine operation leads to decreased power output, increased fuel consumption, and increased smoke emission for Diesel engines with a classical injection system. It is also found that the resistance of the air filter flow affects the composition of combustion engines, but has no significant effect on turbocharged engines.
Article
Chemistry, Physical
Tadeusz Dziubak
Summary: Pleated filter paper is commonly used to filter and clean the intake air of vehicle engines. PowerCore filters, with their axial flow design, reduce pressure drop and improve filtration efficiency. This study compares the performance of PowerCore and PowerCore G2 filters with cylindrical filters, and investigates the effect of dust loading on filtration performance.
Article
Energy & Fuels
Tadeusz Dziubak
Summary: Small dust particles increase flow resistance of fibrous filter bed, shortening air filter lifespan and vehicle performance. This study experimentally determined the dust absorption coefficient k(m) of the PowerCore filter bed under two-stage filtration conditions, which is useful for predicting mileage and filter performance.
Article
Engineering, Chemical
Tadeusz Dziubak, Sebastian Dziubak, Michal Tomaszewski
Summary: The effects of cyclone separation length, outlet pipe inner diameter, and swirl guide angle were numerically investigated in four cyclone models at different inlet velocities. The Rosin-Rammler model was used to consider the fractional composition of the test dust. The mass proportion of particles in the cyclone and the filtration efficiency were determined, and the results showed that the highest filtration efficiency was achieved for particles in the 20-40 μm size range.
Article
Energy & Fuels
Tadeusz Dziubak, Pawel Szczepaniak
Summary: This paper proposes a novel hydraulic precision pair internal leak flow model for evaluating the technical condition of automatic transmissions (ATs). The model uses data from measurements involving an actual object with a specific AT operation period. Variant tests conducted in this study show that reduced oil viscosity, significant wear of the controller's precision pair, and increased oil temperature all contribute to an increase in internal leakage.
Article
Engineering, Mechanical
T. Dziubak
Summary: This study compared the performance of a standard filter material (cellulose) and materials with added fiber layers of small diameters (nanofibers), finding that nanofibers have higher filtration efficiency and accuracy, at the expense of increased pressure drop and flow resistance.
INTERNATIONAL JOURNAL OF AUTOMOTIVE AND MECHANICAL ENGINEERING
(2021)
