Academic literature on the topic 'Particulate matte, brake emissions, friction materials'

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Journal articles on the topic "Particulate matte, brake emissions, friction materials"

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Storch, Lukas, Christopher Hamatschek, David Hesse, et al. "Comprehensive Analysis of Current Primary Measures to Mitigate Brake Wear Particle Emissions from Light-Duty Vehicles." Atmosphere 14, no. 4 (2023): 712. http://dx.doi.org/10.3390/atmos14040712.

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Exhaust regulations and improved exhaust gas treatment systems have already initiated the trend that brings emissions from brakes and tires to the forefront of traffic-induced particulate matter. The health and environmental relevance of particulate matter has resulted in regulators, industry, and research institutions prioritising the mitigation of non-exhaust particle emissions. To this end, under the umbrella of the United Nations Economic Commission for Europe World Forum for Harmonisation of Vehicle Regulations (UNECE WP.29), the Working Party on Pollution and Energy (GRPE) mandated the P
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Vasiljević, Saša, Jovanka Lukić, Danijela Miloradović, and Jasna Glišović. "Driving cycles for studying brake wear particle emissions on an inertial brake dynamometer." Tribology and Materials 2, no. 1 (2023): 8–19. http://dx.doi.org/10.46793/tribomat.2023.006.

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With the development of contemporary drive systems that have a lower or zero emission of exhaust products, a significant reduction in the harmful influence of traffic on the environment has been achieved, but today new pollutants have been identified on the vehicle. One of such non-exhaust pollutant are brakes whose wear can be a significant particulate matter (PM) contributor. Examining the mechanisms of the formation of particles during braking, and therefore, brake wear is becoming one of the important areas of research today. There are several tests and driving cycles that are applied duri
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Hamatschek, Christopher, Klaus Augsburg, David Schobel, et al. "Comparative Study on the Friction Behaviour and the Particle Formation Process between a Laser Cladded Brake Disc and a Conventional Grey Cast Iron Disc." Metals 13, no. 2 (2023): 300. http://dx.doi.org/10.3390/met13020300.

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Brake-wear particle emissions are the result of the components of a friction brake being in tribological contact, and they are classified as non-exhaust emissions. Since most of the emitted particles belong to the size classes of particulate matter (≤10 μm) and differ significantly in terms of their physico-chemical properties from automotive exhaust emissions, this source is of particular relevance to human health and, therefore, the focus of scientific studies. Previous studies have shown that coated brake discs offer significant wear and emission reduction potential. Nevertheless, no studie
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Hagino, Hiroyuki. "Brake Wear and Airborne Particle Mass Emissions from Passenger Car Brakes in Dynamometer Experiments Based on the Worldwide Harmonized Light-Duty Vehicle Test Procedure Brake Cycle." Lubricants 12, no. 6 (2024): 206. http://dx.doi.org/10.3390/lubricants12060206.

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Brake wear particles, as the major component of non-exhaust particulate matter, are known to have different emissions, depending on the type of brake assembly and the specifications of the vehicle. In this study, brake wear and wear particle mass emissions were measured under realistic vehicle driving and full friction braking conditions using current commercial genuine brake assemblies. Although there were no significant differences in either PM10 or PM2.5 emissions between the different cooling air flow rates, brake wear decreased and ultrafine particle (PM0.12) emissions increased with the
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Jeong, Mu Hyeok, Won Cheol Shin, Yoon-Suk Oh, et al. "Dynamometric Investigation on Airborne Particulate Matter from Automobile Brake: Impact of Disc Materials on Brake Emission Factor." Lubricants 11, no. 12 (2023): 526. http://dx.doi.org/10.3390/lubricants11120526.

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In this work, we evaluated the impact of disc rotors of gray cast iron (GCI), nitrocarburized (NC), and superhard ceramic-coated (SCC) GCI on the brake wear PM emissions of passenger vehicles using dynamometric measurements. The brake emission factor (BEF) of the SCC was greatly reduced by more than a factor of 1/5 compared with those for the GCI and NC for both low-steel and non-steel friction materials. Surface topological and microstructural analyses confirmed that more severe wear was pronounced for the NC rotor compared with the SCC, as evidenced by large concave pits in the wear tracks.
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Imran, Al Ichlas, Januar Parlaungan Siregar, Mohd Ruzaimi Mat Rejab, et al. "Opportunities and challenges in the sustainable integration of natural fibers and particles in friction materials for eco-friendly brake pads." Mechanical Engineering for Society and Industry 4, no. 3 (2024): 337–67. https://doi.org/10.31603/mesi.12271.

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The high concentration of metallic components in the pad composite improves breaking ability at elevated temperatures and frequencies, bolstering the automobile's braking system. The brake pad operates through friction mechanisms, generating PM 10 and PM 2.5 particulate matter that is emitted into the atmosphere, adversely affecting the well-being of humans and animals. Therefore, eco-friendly materials like natural fiber and organic particles are being used as substitutes for the metal in brake pads. However, natural fibers and particles exhibit unique characteristics when interacting with ot
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Kim, Sung-Hun, Mu Hyeok Jeong, Jaegyeom Kim, et al. "Dynamometric Investigation on Airborne Particulate Matter (PM) from Friction Materials for Automobile: Impact of Abrasive and Lubricant on PM Emission Factor." Lubricants 9, no. 12 (2021): 118. http://dx.doi.org/10.3390/lubricants9120118.

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Reduction of non-exhaust airborne particulate matter (PM), leading to adverse effects in respiratory system, is an urgent task. In this work, we evaluated the impact of raw materials in friction materials on PM emission due to brake wear for passenger vehicle. Time- and temperature-dependent measurements using dynamometer were made for low-steel friction materials with varied abrasives and lubricant(graphite). The brake emission factor (BEF) for graphite of varied sizes ranged from 6.48 to 7.23 mg/km/vehicle. The number concentration indicates that smaller graphite (10 μm) produces more nano-s
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Yoo, Jaesang, and Youngze Lee. "An Experimental Study on the Fine Particle Emissions of Brake Pads According to Different Conditions Assuming Vehicle Deceleration with Pin-on-Disc Friction Test." Applied Sciences 14, no. 3 (2024): 1000. http://dx.doi.org/10.3390/app14031000.

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Fine particles from vehicles occur in a range of particulate matter (PM) sizes and influence the roadside atmosphere. The contribution of fine dust from automobiles to road pollution has reportedly been extremely high. Researchers have estimated that non-exhaust fine dust originating from brakes, tires, clutches, and road surface wear rate is increasing. Several studies have shown that brake pads account for a significant proportion of non-exhaust emissions. In this study, a friction test using vehicle brake pads was carried out with a friction tester to reveal the harmfulness of brake pad par
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Rajaei, Hossein, Sasan Amirabdollahian, Cinzia Menapace, Giovanni Straffelini, and Stefano Gialanella. "Microstructure and Wear Resistance of Fe3Al Coating on Grey Cast Iron Prepared via Direct Energy Deposition." Lubricants 11, no. 11 (2023): 477. http://dx.doi.org/10.3390/lubricants11110477.

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In this study, the potential of Fe3Al coating material as an environmentally friendly alternative to coatings containing critical elements for brake discs was investigated. A buffer layer of Cr–Mo steel (Ferro 55) that was about 500 µm thick was applied on a gray cast iron disc to enhance the coating quality and prevent the formation of hot cracks during solidification. The microstructural analysis of the cross-section of the coating showed that the buffer layer diffused into the Fe3Al coating, forming a combination of Fe3Al, Fe, and Fe3AlC0.5 phases. The tribological properties of the Fe3Al-c
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Alemani, M., J. Wahlström, V. Matějka, et al. "Scaling effects of measuring disc brake airborne particulate matter emissions – A comparison of a pin-on-disc tribometer and an inertia dynamometer bench under dragging conditions." Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 232, no. 12 (2018): 1538–47. http://dx.doi.org/10.1177/1350650118756687.

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An important contributor to non-exhaust emissions in urban areas is airborne particulate matter originating from brake systems. A well-established way to test such systems in industry is to use inertia dynamometer benches; although they are quite expensive to run. Pin-on-disc tribometers, on the other hand, are relatively cheap to run, but simplify the real system. The literature indicates promising correlations between these two test stands with regard to measured airborne number distribution. Recent studies also show a strong dependency between the airborne number concentration and the disc
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Dissertations / Theses on the topic "Particulate matte, brake emissions, friction materials"

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Gomes, Nogueira Ana Paula. "Particulate Matter Emission Issues in Brake Systems." Doctoral thesis, Università degli studi di Trento, 2022. http://hdl.handle.net/11572/348039.

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Automotive brake systems are source of particulate matter (PM) emissions, particularly in the urban areas. Several human ill-health are related with this kind of pollution. Along tire wear, road wear and dust from resuspension, the brake wear comprises the most relevant non-exhaust source of road traffic related emissions. Aiming at studying the PM brake emissions, this thesis is composed of an introductory part containing the main concepts and the state of art of the main subjects; and the experimental part, which comprehends three investigations. Chapters 2, 3, 4 and 5 are dedicated to th
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Conference papers on the topic "Particulate matte, brake emissions, friction materials"

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Jeong lng, Mu Hyeok, Jungju Lee, SungWoo Choi, et al. "Dynamometric Investigation on Airborne Particulate Matter from Brake of Automobile: Impact of Disc Materials on Brake Emission Factor." In Brake Colloquium & Exhibition - 41st Annual. SAE International, 2023. http://dx.doi.org/10.4271/2023-01-1861.

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<div class="section abstract"><div class="htmlview paragraph">Non-exhaust airborne particulate matter (PM) from automobiles might lead to potential adverse effects on the respiratory system. In this work, we evaluated the impact of surface properties of disc rotors on brake wear PM emission for passenger vehicles. Dynamometric measurements using the novel cycle were made for gray cast iron (GCI), nitrocarburized (NC), and superhard ceramic coated (SCC) disc rotors using non-steel (N/S) friction materials. The brake emission factors (BEF) for the GCI and NC disc rotors ranged from 1
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Nousir, Saadia, and Karl-Michael Winter. "Enhancing Brake Performance: FNC-Smart-ONC® Technology to Address Corrosion Challenges and Extend the Durability of GCI Rotors." In Brake Colloquium & Exhibition - 42nd Annual. SAE International, 2024. http://dx.doi.org/10.4271/2024-01-3044.

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<div class="section abstract"><div class="htmlview paragraph">The most used rotor material is gray cast iron (GCI), known for its susceptibility to corrosion. The impact of corrosion on the braking system is paramount, affecting both braking performance and the emission of particulate matter. The issue becomes more severe, especially when the brakes are left stationary or unused for extended durations in humid conditions, as seen with electric vehicles (EVs). Brake disc corrosion amplifies the risk of corrosion adhesion between contacting surfaces, leading to substantial damage, in
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Imai, Shotaro, Katsuya Okayama, Koji Sugimoto, and Noriko Matsunaga. "Study on the Brake Particle Emissions of Various Friction Materials." In EuroBrake 2021. FISITA, 2021. http://dx.doi.org/10.46720/1547506eb2021-fbr-002.

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Brake wear debris and its contents have been matters of concern due to their impacts on the human body and the environment, which has led to many studies being done in the brake industry. In North America, copper is a prime example of brake wear debris impacting the environment when it’s exhausted to the atmosphere. The regulation of copper content in brake pads for new cars has been enacted and has led to the development of copper free friction materials which are used in the market today In Europe, micro particles such as PM2.5 and PM10 contained in the brake wear debris, which are also call
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Walther, G., J. Trapp, and T. Weißgärber. "Environmentally Friendly Sintered Friction Materials For Clutch And Brake Systems." In Euro Powder Metallurgy 2023 Congress & Exhibition. EPMA, 2023. http://dx.doi.org/10.59499/ep235764215.

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Sintered friction materials are used in particular for high performance applications due to their excellent temperature stability. Increasingly, new regulations regarding sustainability and environmental compatibility require innovative materials. In the USA, only brake pads with less than 0.5 percent may be sold by 2025 due to toxic abrasion. In addition, the new Euro 7 standard also imposes stricter limitations on non-exhaust particulate emissions. In this paper, material solutions for iron-based sintered linings for motorcycle brakes and synchronizer rings are discussed as an example of how
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Mancini, Aleesandro, Bozhena Tsyupa, Marco Bandiera, et al. "Comparative study of size distribution and chemical composition of emissions from low steel and NAO friction materials." In EuroBrake 2022. FISITA, 2022. http://dx.doi.org/10.46720/eb2022-ebs-021.

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"Significant efforts are currently on going to decrease the non-exhaust emissions from transport sector. As far as the brake system is concerned, these efforts are mostly associated with the research of new friction couples and technological solutions capable to reduce the generation of fine particulate at the brake pad – disc interface. An additional strategy to reduce the environmental impact of brake emissions can arise from: a) increasing the emission particle dimensions; and b) tailoring their chemical composition. Consequently, prior to perform any environmental and toxicological assessm
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