Review of the coatings used for brake discs regarding their wear resistance and environmental effect

Vasiljević, Saša; Glišović, Jasna; Stojаnović, Blaža; Vencl, Aleksandar

doi:10.1177/13506501211070654

Cited by 12 publications

(9 citation statements)

References 103 publications

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“…With regard to the tribological system as a whole, however, the mere coating of brake discs does not automatically guarantee high particulate reduction potential. Rather, the process parameters must be mastered in the fabrication of the coating surface and brake linings specially adapted to the requirements of the coating must be used [10,41]. In general, the compatibility of the friction partners is decisive for performance and emission characteristics as well as for comfort aspects and the durability of the braking system [35].…”

Section: Influence Of Alternative Brake Disc Materialsmentioning

confidence: 99%

Comprehensive Analysis of Current Primary Measures to Mitigate Brake Wear Particle Emissions from Light-Duty Vehicles

et al. 2023

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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 Particle Measurement Programme Informal Working Group (PMP-IWG) to develop a Global Technical Regulation (GTR) for measuring brake dust. The standards and procedures defined within the GTR should eventually form the basis for the introduction of a Euro 7 limit value for brake emissions. The purpose of this measurement campaign is to provide an exemplary overview of the emission behaviour of wheel brakes and friction pairings currently available on the market and to identify possible reduction potential with regard to particulate emissions. All measurements were carried out taking into account the draft GTR valid at the time of execution. For the investigations, brakes were selected using the example of different vehicle classes, brake concepts (disc and drum brake), vehicle axles (front and rear axle), and alternative friction materials (brake disc and pads/shoes). Thus, the use of wear-resistant discs and improved brake pad compositions are able to achieve significantly lower emissions. In addition, the measurement of brake dust emissions from vehicles with different levels of electrification was considered. Electrical braking was modelled and applied to the Worldwide Harmonised Light-Duty Vehicles Test Procedure (WLTP) Brake Cycle, which has demonstrated high emission reduction potentials depending on the electrification level.

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Section: Influence Of Alternative Brake Disc Materialsmentioning

confidence: 99%

Comprehensive Analysis of Current Primary Measures to Mitigate Brake Wear Particle Emissions from Light-Duty Vehicles

et al. 2023

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“…It was found that depending on the disc material, the temperature has a different effect on the resulting particle emission. The importance of disc coating in order to reduce the emission of particles generated in the braking process and to reduce the intensity of wear was presented in research [37]. In this research, it was shown that different materials can be used to cover the surface of the brake discs, as well as technologies that can reduce the intensity of brake wear and the resulting emission of particles.…”

Section: Research Resultsmentioning

confidence: 99%

Driving cycles for studying brake wear particle emissions on an inertial brake dynamometer

Vasiljević¹,

Lukić²,

Miloradović³

et al. 2023

tribomat

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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 during the research of the brakes, but they are not primarily defined for testing particle emissions during braking. UNECE (United Nations Economic Commission for Europe) has included in its plan the introduction of standardised cycles that will prescribe a brake cycle whose purpose will be to examine the formation of particles. The brake pads are made of a mixture of different materials that ensure the longevity and efficiency of the brake system and the applied materials have different wear intensities in certain operating conditions. The most common laboratory tests in this area are performed using inertial brake dynamometers. This paper presents an experimental planning method of quantifying the influence of some of the operating parameters (initial speed of the vehicle, braking pressure and vehicle’s load per one brake disc-pads friction pair) on the airborne particulate matter for four different brake pads materials during testing on an inertial brake dynamometer.

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“…The friction coefficient (FC), wear rate (WR) and weight loss (WL) are the criteria to measure their performance (Bijwe, 1997;Mann et al, 2021). The wear generated due to braking may produce particles, which constitute the primary components of particulate matter in the air (Vasiljevic et al, 2022(Vasiljevic et al, , 2023. During the braking process, the friction performance is subject to a comprehensive influence from various factors, including but not limited to, production method, surface roughness and contact load value.…”

Section: Introductionmentioning

confidence: 99%

Prediction and comparative analysis of friction material properties using a GA-SVM optimization model

Zhang,

Wang,

Wang

2024

ILT

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Purpose With the rapid advancement in the automotive industry, the friction coefficient (FC), wear rate (WR) and weight loss (WL) have emerged as crucial parameters to measure the performance of automotive braking systems, so the FC, WR and WL of friction material are predicted and analyzed in this work, with an aim of achieving accurate prediction of friction material properties. Design/methodology/approach Genetic algorithm support vector machine (GA-SVM) model is obtained by applying GA to optimize the SVM in this work, thus establishing a prediction model for friction material properties and achieving the predictive and comparative analysis of friction material properties. The process parameters are analyzed by using response surface methodology (RSM) and GA-RSM to determine them for optimal friction performance. Findings The results indicate that the GA-SVM prediction model has the smallest error for FC, WR and WL, showing that it owns excellent prediction accuracy. The predicted values obtained by response surface analysis are closed to those of GA-SVM model, providing further evidence of the validity and the rationality of the established prediction model. Originality/value The relevant results can serve as a valuable theoretical foundation for the preparation of friction material in engineering practice.

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Review of the coatings used for brake discs regarding their wear resistance and environmental effect

Cited by 12 publications

References 103 publications

Comprehensive Analysis of Current Primary Measures to Mitigate Brake Wear Particle Emissions from Light-Duty Vehicles

Comprehensive Analysis of Current Primary Measures to Mitigate Brake Wear Particle Emissions from Light-Duty Vehicles

Driving cycles for studying brake wear particle emissions on an inertial brake dynamometer

Prediction and comparative analysis of friction material properties using a GA-SVM optimization model

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