Manchester-based Carbon Air is introducing a patented application of coconut shell-derived material in order to help alleviate road noise from tyres. According to the company, the technology is aimed at reducing the noise of both internal combustion engine cars and electric vehicles (EVs).
Indian consumers will soon benefit from tyre performance requirements very similar to those covering tyres sold in the UK and Europe. The country’s Ministry of Road Transport and Highways (MoRTH) announced the upcoming regulatory change on 28 June 2022.
Nexen Tire has shared details of how it has used Artificial Intelligence (AI) and big data-driven methodology to help reduce tyre noise. The big data research for Noise, Vibration, and Harshness (NVH) was jointly conducted with Hyundai-Kia Automotive Group and Inha University in Korea. The results of the braking test performance on snow, hydroplaning, and wet surfaces showed internal and external noise generated by cars can be reduced by 1 dB (decibel) and 3 dB (decibel), respectively.
In recent years we’ve seen a number of tyre makers introduce noise reduction technologies that utilise foam insulation, with Continental, Hankook, Bridgestone, Sumitomo Rubber, Goodyear amongst those bringing their own version of the concept to market. Toyo Tire & Rubber Co. Ltd. has taken a different approach and sought instead to cut noise by modifying airflow within the tyre cavity. It calls its solution Toyo Silent Technology.
Hankook reports that it has updated its sound absorber technology with a new foam and adhesion process that further reduce tyre weight. The next foam is said to reduce internal noise levels by as much as 5 to 7 dB(A).
The Korean Ministry of Environment has announced that domestic and overseas tyre manufacturers will be obliged to indicate the noise level of their products from 2019. The policy announced in Korea on Monday follows the E.U. standards as well, the ministry said, and will be applied to tiyes on passenger vehicles starting in 2019, and […]
Infinity executives have welcomed recent ADAC test results ranking its Ecosis 185/65 R15 H tyre top for noise comfort and giving it a “good” rating for fuel consumption and wear. On this occasion ADAC selected tyres intended to be fitted to smaller town and city cars.
Several tyre manufacturers have already utilised foam as noise reduction solution, and now Falken Tyre has presented its own version – which it says can lower drive-by noise by up to ten decibels compared to standard tyres and cabin noise by four decibels. The solution was material developed together with parent company Sumitomo Rubber Industries (SRI) and consists of a double-humped layer of ether-polyurethane foam material. Falken calls it Silent Core.
Grip and fuel efficiency are often the focal points of improved tyre technologies, yet the third EU label metric of noise is an important consideration for many motorists. Goodyear Dunlop has announced new technologies in both its premium brands designed to increase comfort through reduced noise levels inside the vehicle when driving – a feature not actually measured in labelling, but one that could prove attractive to consumers wanting to hear more of their engine tone or in-car entertainment.
Kumho Tire USA has extended its original equipment supply to Chrysler with the homologation of its Solus TA31 all-season tyre for the 2015 Chrysler 200 range. Beginning in March 2014, Kumho is supplying the TA31 in size 235/45R18 94V for select front wheel drive and all wheel drive models within the line-up. The Solus TA31 features a symmetric tread design, and Kumho says the tyre “meets consumer desire for excellent ride comfort while maintaining a very low noise threshold.”
Researchers from Yokohama Rubber report making progress in a project that may lead to lower external tyre noise and improved tyre aerodynamics. The Yokohama contingent is working together with a team of researchers at the Institute of Space and Astronautical Science (ISAS), which is a part of the Japan Aerospace Exploration Agency (JAXA). The team, led by Professor Kozo Fujii, has successfully conducted the world’s first simulation of near real-scale flow structures (turbulence) around a tyre rolling on a road surface and the acoustic waves, or noise, generated from these structures. Yokohama Rubber expresses confidence that the ability to simulate a flow structure that enables precise measurement of acoustic waves opens up potential for new technological breakthroughs, and the company says it will therefore continue to support further research in these areas.
Contract tyre manufacturer, Enjoy Tyre is promoting its Rotalla range and a trio of winter tyre patterns in particular. The S100 M+S, S110 and S210 have all been produced as so-called “skid proof winter tyres”. All three patterns reportedly offer a thin multi-curve tread incorporating significantly deeper grooves in order to maximise performance in both standard and difficult winter road conditions.
Litchfield – the GT-R tuner – has released details of its latest exhaust system for the R35 variant. This latest system has been precision-fabricated in a substantial 102mm (4”) diameter is aimed at “those discerning owners that refuse to compromise on either soundtrack or performance for their car.”
Indian off-road tyre manufacturer TVS Srichakra has unveiled its latest TVS Eurogrip tyre at the Agritechnica show. The Tigertrac is a newly-developed range of agricultural radials suited intended for both farm and on-road use.
Nokian Heavy Tyres says it has met user demand with its new Nokian CT BAS tyre for heavy trailers. Noting the challenges posed by construction site use, a surface typically featuring sharp rocks, nails and pieces of steel lying about, it says the CT BAS brings the tyre maker’s top-end puncture resistance technology, first developed for forestry applications, to construction sites. Furthermore, the BAS technology developed by Nokian Heavy Tyres enables the use of higher pressure levels.
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