Research on the technology of noise reduction in hybrid electric vehicle with composite materials

Liao, Lianying; Zuo, Yanyan; Meng, Haodong; Liao, Xuzheng

doi:10.1177/1687814018766916

Cited by 14 publications

(10 citation statements)

References 11 publications

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“…The loss factor of the composite beam with the composite elastomer was high in the range of 1–2 kHz. In recent years, the shift to hybrid electric vehicles (HEVs) and electric vehicles (EVs) has been promoted, and it has been reported that the noise in the 1–2 kHz band is higher in HEVs than in automobiles with conventional engines . With the need to address global environmental issues, the electrification of automobiles is an important issue that cannot be avoided, and composite elastomers with high transparency and vibration-damping properties are expected to be applied as materials for next-generation vehicles.…”

Section: Results and Discussionmentioning

confidence: 99%

Silica Nanoparticle Reinforced Composites as Transparent Elastomeric Damping Materials

Asai

Seki

Hoshino

et al. 2021

ACS Appl. Nano Mater.

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Inspired by the structure of the cornea, which is the transparent front part of the eye, we developed a transparent and tough silica composite elastomer consisting of poly[di(ethylene glycol)methyl ether methacrylate] (PMEO 2 MA) and 110 nm spherical silica particles without using an organic cross-linking agent. While filler composite elastomers, such as reinforced rubbers, have complex compositions containing multiple additives (dispersants, plasticizers, vulcanizing agents, etc.), the composition of our composite elastomer is very simple. With an increased amount of silica particles, the fracture energy of the composite elastomer (20.2 MJ m −3 ) was improved by 25 times compared to that of unfilled PMEO 2 MA (0.8 MJ m −3 ). Nanoscale mapping using atomic force microscopy elucidated the presence of an interface layer (IL) of approximately 15 nm thickness with a high elastic modulus near the silica particles in the composite elastomer. The fracture energy of the composite elastomer was found to be a maximum when the particle surface distance was approximately 30 nm. This particle surface distance meant that the ILs were just in contact with each other. The surface charge density and Hansen solubility parameter of the silica particles indicated the ionization of silanol groups and interactions caused by hydrogen bonding between polymer chains and the silica surface. The array of silica particles embedded with intervals of a few nanometers was expected to be able to effectively dissipate deformation energy as heat due to shear strain and friction between the particle surface and polymer matrices. Measurements of the vibration-damping properties revealed that the loss factor of the composite elastomer was significantly higher than that of the unfilled elastomer, indicating that the composite elastomer in this study could be applied as an interlayer film for laminated glass in automotive and architectural applications.

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Section: Results and Discussionmentioning

confidence: 99%

Silica Nanoparticle Reinforced Composites as Transparent Elastomeric Damping Materials

Asai

Seki

Hoshino

et al. 2021

ACS Appl. Nano Mater.

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“…However, the noise and vibration produced during the HEV operation reduce the comfort of the passengers. They also cause stress, fatigue, and adversely affect the drivers [1,2].…”

Section: Introductionmentioning

confidence: 99%

Investigation on Vibration and Sound Signals From Hybrid-Engine to Electric Vehicles

Chomphan¹

2023

GEOMATE

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Electric vehicles have been increasingly popular compared to conventional combustion engine vehicles. Along the way, hybrid electric vehicles have been developed to truly bridge the transition from internal combustion engines to electric vehicles. Therefore, an analysis of vibration and sound signals of a HEV and an EV is necessary to evaluate the quality of service comparatively. As for the HEV test with three measuring scenarios, the experimental data are collected and subsequently, the dominant frequency extraction is conducted. The hybrid-drive mode shows the highest level of vibration magnitude for all tested speeds; however, some scenarios of engine-drive mode are higher than hybrid-drive mode due to the engine and battery setups. Last but not least, the sound signal analysis is performed with the same scenarios. It has been seen that the levels of both sound and vibration magnitudes directly vary with the engine speed. As for the EV test, when the electric car starts to work by increasing the speed, its vibration and sound magnitudes measured at three distinct positions increase accordingly. This study is the basis for further development of the next generation EV in the vibration and sound passenger perception aspects.

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“…This means that there is a large range of frequencies from, low-frequency to high-frequency distributions. In the paper [ 19 , 20 ], a composite used for the noise reduction with damping and acoustic absorption properties was study for the control of the vehicle’s interior noise. The research showed significant improvements in the noise, vibration, and harshness performance.…”

Section: Introductionmentioning

confidence: 99%

A Vibration Analysis of the Rubber Inertial Dampers Used in Electrical Vehicles

2022

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The development of electric vehicle manufacturing, which is considered a useful new popular propulsion system, has major design differences compared to conventional vehicles. This requires a reconsideration of the main components of vehicles and an analysis of them to determine the optimal design and solutions for the new models of cars. Among the many systems that need to be reconsidered is the suspension. A cheaper solution for reducing the car’s vibrations is suspension where the damping is ensured by elastic rubber elements, which are very simple, as they have significant structural damping and a much lower price than the classic solution. The main advantage of this solution is the simplicity. The paper presents and analyzes such an element, analyzing the vibrations of this element and the way in which inertial masses (metal spheres) inserted into the volume of the rubber influence the behavior of this element. The transmissibility of such an element, and how the number of balls and the level of structural damping influences this property, is also analyzed. The results suggest possible applications in the automotive industry.

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Research on the technology of noise reduction in hybrid electric vehicle with composite materials

Cited by 14 publications

References 11 publications

Silica Nanoparticle Reinforced Composites as Transparent Elastomeric Damping Materials

Silica Nanoparticle Reinforced Composites as Transparent Elastomeric Damping Materials

Investigation on Vibration and Sound Signals From Hybrid-Engine to Electric Vehicles

A Vibration Analysis of the Rubber Inertial Dampers Used in Electrical Vehicles

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