Fourth Generation Of Runflat Tires By Dunlop
Posted on October 12, 2009
Filed Under Dunlop Tires
Thermal Control Technology increases riding comfort – Runflat tires have become as comfortable (or even more comfortable) than regular tires.
The Sumitomo Rubber Industries, Ltd. company has recently announced that its new Thermal Control Technology allowed to make the last step in the development of safe Runflat tires that will ensure maximum comfort. New tires will provide even higher level of comfort than regular tires. The second largest tire manufacturer of Japan has been working on the new generation of Runflat tires for a long time. The main objective of the engineers was the increase of safety and environmental protection.
The first Runflat system was called DENOVO. It was applied by the Dunlop company in 1970. The principle of its work was the following: a cartridge with jelly-like liquid was attached to the rim of the wheel inside the tire. When tire lost the pressure the cartridge exploded thus creating protective layer inside the tire what allowed to fix the puncture. The new DENOVO 2 generation appeared a bit later. DENLOC technology that appeared in 1972 allowed tire not to run off the rim in case of pressure loss. The new generation of this technology appeared in 1979.
In 2000 Sumitomo Rubber developed CTT Runflat Tire that became the second generation of safe tires. Unique design of tread profile that was patented under the name of CTT Profile allowed to reduce tire weight by 10% thus decreasing its vertical rigidity and increase comfort by 15% if to compare with the first generation of Runflat tires.
Today after t
horough examining of tools for heat accumulation decrease Sumitomo Rubber Industries, Ltd. launches the fourth generation of Runflat tires that use Thermal Control Technology. When the tire looses pressure it undergoes considerable deformation and its sidewalls begin to heat with every rotation of the tire. The company developed and combined 4 technologies: CTT Profile, aramid carcass, materials with high heat conduction ratio and new design of sidewall that contains holes. Application of the new technologies allowed to make after-puncture distance 2 times longer if to compare with the third generation. The holes in the sidewall allowed to reduce its thickness by 30% and correspondingly decrease the weight by 3%, vertical rigidness – by 6%.
From now on Runflat tires provide even more comfort than regular ones.
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