Influence of Vanes Shape on the High Frequency Noise of Ventilated Disc Brakes in Heavy Vehicles

Stojanović, Nadica; Glišović, Jasna; Lukić, Jovanka; Grujić, Ivan

doi:10.24874/mvm.2017.43.03.01

Cited by 2 publications

(2 citation statements)

References 3 publications

(3 reference statements)

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“…Acceleration sensor should be placed where high structure responses are expected. By analysis that is earlier performed on different variants of the disc, it can be concluded that highest modes occur on friction ring of a brake disc [25].  The applied top for the impact hammer -the top to be used is the one that activates as many natural frequencies as possible [15].…”

Section: Experimental Analysismentioning

confidence: 99%

Experimental and Numerical Modal Analysis of Brake Squeal Noise

Stojanović¹,

Glišović²,

Grujić³

et al. 2018

MVM

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In addition to different kinds of pollutants emitted by the vehicles, noise can also negatively effect on human health. It does not only threaten drivers, but also people living near major intersections and roads, as well as roads where traffic-flow is high. One of the biggest problems of the vehicle is the noise that occurs in the braking process. Despite the large scope of research into the development of brake systems, there are still no reliable procedures during the development phase to evaluate the robustness of these systems with respect to friction-induced vibrations. Therefore, the identification of the modal properties by using experimental methods has become even more important. Experimental and numerical modal analysis of the venting disc with radial ribs was performed in this paper. This approach enables the determination of the natural frequencies of the brake disc, as well as the verification of results obtained by the numerical methods. Changes in modal properties-resonance frequencies and modal damping values due to variation in operating conditions were also analysed.

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Section: Experimental Analysismentioning

confidence: 99%

Experimental and Numerical Modal Analysis of Brake Squeal Noise

Stojanović¹,

Glišović²,

Grujić³

et al. 2018

MVM

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“…The objectives of this research are to compare and evaluate the performance of the biodiesel blends with petro‐diesel on a stationary multi‐cylinder diesel engine, and carry out exhaust air quality analysis of the combustion products (gases) [17–30].…”

Section: Introductionmentioning

confidence: 99%

Quality assessments, performance, and emissions evaluation of biodiesel from citrullus lanatus oil seeds and diesel blends in compression ignition engine

Narayan

Kaisan

Mahroogi

2023

The Journal of Engineering

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Due to limited stock of levels of fossil fuel resources and ecological issues, biodiesel is becoming an attractive alternative choice for replacing conventional fuels. Biodiesel can be used by mixing with different fuels like citrullus lanatus seeds, camphor, cleaner fuel injector, sunflower, safflower, soybean, cottonseed, rapeseed, palm, Jatropha, and Moringa oil seeds. This paper reviews use of biofuels blended with citrullus lanatus seeds. The citrullus lanatus biodiesel was mixed with diesel in different percentages by volume. Some physico‐chemical characteristics of blends and pure diesel were investigated and it was established that it conforms to the American Society of Testing Materials (ASTM) standards. The exceptions were the viscosity and specific gravity of the pure biodiesel B100 which were 0.09 and 0.018 mm2/s above the ASTM standard, respectively. All blends were run on a stationary 4‐cylinder diesel engine at 70% loading and speeds of 1500, 2000, and 2500 rpm. It was deduced that B10 gave the best brake power, thermal efficiency, and optimum specific fuel consumption at a speed of 2500 rpm. B15 gave the highest brake mean effective pressure. B25 and B100 gave the least values of brake power and brake thermal efficiency across the speeds. B100 gave the highest brake specific fuel consumption. Furthermore, the exhaust emission gases such as CO2, CO, NOx, and HC in different engine conditions stated above were recorded and analyzed. It was found that B25 emitted about 53% lesser CO2 and 37% lesser CO as compared to pure diesel with zero HC at 2500 rpm. The blends were better in terms of engine performance and also in reduction of emissions in most cases, than pure diesel fuel. Problem statement: Various emissions from engines like unburnt hydro carbons, particulate emissions, NOx, and CO have bad effects on ecology. This work presents an overview on use of novel hybrid fuels in compression ignition engines with an aim of mitigating effects of emissions on environment. Biodiesel was blended with Citrullus lanatus oil and pure diesel in different proportions to see effects on performance of diesel engines. The presented work may pave the way for use of alternative cheap and environmentally friendly fuels in automotive systems.

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Influence of Vanes Shape on the High Frequency Noise of Ventilated Disc Brakes in Heavy Vehicles

Cited by 2 publications

References 3 publications

Experimental and Numerical Modal Analysis of Brake Squeal Noise

Experimental and Numerical Modal Analysis of Brake Squeal Noise

Quality assessments, performance, and emissions evaluation of biodiesel from citrullus lanatus oil seeds and diesel blends in compression ignition engine

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