February 2, 2015     Japanese 
	  Network - Home
JCN Newswire
  Home  |  Companies  | Annual Reports  |  CSR  | News Alerts     
YOKOHAMA Develops Tire Design Technology that Reduces Aerodynamic Drag on Vehicles

Tokyo, Dec 20, 2012 (JCN) - The Yokohama Rubber Co., Ltd. announced today that it has developed tire design technology that lowers aerodynamic drag. The new technology takes the environmental contribution made by reducing rolling resistance a step further by improving the flow of air around the tires while a vehicle is in motion in order to raise fuel efficiency.

Air flows turbulently inside the wheel wells when a vehicle is moving, and some of this air flows out alongside the vehicle and causes aerodynamic drag to worsen. YOKOHAMA has tackled this problem by pursuing research using both aerodynamic simulations and wind tunnel testing.

Aerodynamic simulation technology was developed in 2010 to enable air flow around tires to be simulated under the conditions envisaged to be encountered in actual use (i.e., with tires mounted in the wheel wells and revolving), and the scope of simulation is presently being expanded to include the entire vehicle.

These simulations and wind tunnel tests resulted in a tire design that reduces the aerodynamic drag on a vehicle. An analysis was made of a tire (fin tire) with fin-shaped protuberances on the side facing inwards when mounted.

The results showed that while drag on the tire itself was worse than on a normal tire, drag on the vehicle as a whole was considerably reduced. This was found to be attributable to changes in pressure in the wheel wells caused by the spiraling flow of air induced in the direction of the tire's rotation by the fins.

Going forward, YOKOHAMA will conduct further research on the relationship between tire shape and air flow, alongside assessing performance on actual vehicles, as it pursues its development of tires that reduce the aerodynamic drag on vehicles overall as well as just improved tire performance.

This technology was unveiled at the 26th Computational Fluid Dynamics Symposium being held at the National Olympics Memorial Youth Center in Tokyo until December 20, and will also to be presented at the Tire Technology Expo 2013 in Cologne, Germany, from February 5, 2013.

By Chris Lui Staff Writer

Copyright © 2015 JCN. All rights reserved. A division of Japan Corporate News Network KK.

 Company Profile |   Print  |   Alerts
ACN Newswire

 Recent  Yokohama Rubber News  
  Yokohama Rubber Breaks Ground for New Marine Products Plant in Indonesia  (July 29, 2014)
  Yokohama Rubber, JAXA Succeed in World's First Simulation of Acoustics around a Rolling Tire  (Mar 20, 2014)
  Yokohama Rubber to Build Pneumatic Marine Fenders and Marine Hoses Plant in Indonesia  (Oct 11, 2013)
  Yokohama Rubber to Establish Sales Subsidiary in Singapore  (Feb 15, 2013)
  YOKOHAMA Introduces "AERO-Y" EV Concept Car Using Proprietary Technology  (Jan 12, 2013)
  YOKOHAMA Develops Tire Design Technology that Reduces Aerodynamic Drag on Vehicles  (Dec 20, 2012)
  Yokohama Rubber Supports Ecological Preservation at Laojun Mountain, Yunnan Province, China  (July 27, 2012)
  Yokohama Rubber Opens New Tire Plant in Russia  (June 1, 2012)
  Electric Vehicle with Yokohama Tires Nearly Bests EV Record on First Try at Most Famous Hill Climb in the World  (Aug 31, 2009)
  'Yokohama Forever Forest' Project Tree-Planting Ceremony Held at Key Tire Production Site in Thailand  (Jan 20, 2009)

 Recent  Automobile Parts and Manufacturing News   
Suzuki Holds Foundation Stone Ceremony of Gujarat, India Plant (Jan 29, 2015)
Bridgestone Renews Global Website  (Dec 9, 2014)
Daihatsu Releases COPEN XPLAY  (Nov 28, 2014)
Bridgestone Opens First US Giant Off Road Radial Tire Manufacturing Facility  (Nov 19, 2014)
Subaru to Exhibit All-New "Outback" at 2014 Guangzhou Motor Show (Nov 14, 2014)
Aisin Enters Plea Agreement with U.S. DOJ  (Nov 14, 2014)
Suzuki Hustler Minicar Wins 2015 RJC Car of the Year Award (Nov 12, 2014)
Yamaha Named a Thomson Reuters 2014 Top 100 Global Innovator (Nov 11, 2014)
Bridgestone Ologic Tyre Technology Wins BMW Innovation Supplier Award  (Oct 13, 2014)
NTN Delivers Two-seater EV Equipped with 'In-wheel Motor' to Shizuoka Prefecture (Oct 8, 2014)

More Automobile Parts and Manufacturing news...
CSR Report Download
Annual Reports

  More >>    
Most Popular

About JCN | Privacy Policy | Terms of Use | JCN Network (日本語)