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Exhibition Debut of Goodyear Self-Inflating Technology for Commercial Tires at the IAA

Self-Inflating Technology
Goodyear technology can aid in fuel savings and CO2 reductions;
Potential to improve performance and eliminate need for external inflation pressure intervention
Brussels/Hanover – Over the past year, researchers at The Goodyear Tire & Rubber Company have been working on a new Air Maintenance Technology application that can aid in fuel savings and CO2 reductions while potentially improving performance and eliminating need for external inflation pressure intervention. The commercial application of Goodyear’s Air Maintenance Technology will make its debut at the 2012 IAA Commercial Vehicle Show in Hanover, Germany, on stand B22 in Hall 12 from September 20 to 27.
Self-Inflating Technology
Goodyear’s Air Maintenance Technology mechanism allows tires to maintain constant, optimum pressure without the use of external pumps, electronics and driver intervention. Proper tire inflation can result in improved fuel economy, prolonged tread life and improved tire performance. Customers should receive the following key benefits from Air Maintenance Technology-enabled tires:

Improved Fuel Economy

Proper tire inflation is key in the commercial market. It is estimated that for every 0.5 bar (50 kPa) lost in tire inflation, there is a 1 percent loss in km per liter.
While 1 percent may seem insignificant, it could cost a truck owner over 735 € in fuel, based on a vehicle that has a fuel consumption of 35 l/100 km, runs 150,000 km a year with a fuel price of € 1.402.

Prolonged Tread Life

AMT is expected to play a major role in prolonging tread life in the commercial tire market. Tires which are 10 percent under-inflated decrease tread life by 9-16 percent3. By utilizing Goodyear’s Air Maintenance Technology, commercial vehicle fleet operators will be able to realize the full mileage potential of their tires.

Optimized Performance

Tire-related costs are the single largest maintenance item for commercial vehicle fleet operators with nearly 50 percent of all truck and trailer breakdowns involving a tire in some way4.
Properly inflated tires are also necessary to keep a vehicle’s handling performance at optimal levels. Under-inflation means less evenly distributed pressure on the road. It also reduces the tread area that is in direct contact with the road and can impact the integrity of the tire casing, which is key to the retreading process.
Commercial trucks pose a different challenge for AMT as tires are larger, have higher inflation pressures, drive longer distances and carry much heavier loads. Commercial tires operate at a higher air pressure, typically 850 kPa for commercial tires vs. 250 kPa for consumer tires. This is a much more challenging performance requirement for the pump system. The life of a commercial truck tire is often extended by retreading. The commercial truck AMT system is being designed to perform after the retreading process.
“We believe the Air Maintenance Technology application for commercial vehicle tires will not only enhance the performance of the tire, but will also provide cost savings to fleet owners and operators through the extension of tire tread life and increased fuel economy” stated Goodyear’s Chief Technical Officer, Jean-Claude Kihn. “The progress we continue to make with this technology is very encouraging. We look forward to further testing of this concept.”
Engineers at Goodyear’s Innovation Center in Akron, Ohio, USA are credited with the development of the commercial application of this concept and the supporting technology. Prototype tires have been produced in Goodyear’s Topeka manufacturing plant in Kansas, USA, and rigorous validation testing has confirmed that the AMT pumping mechanism works. Next year, an extensive fleet trial is planned to gather real-world information from customers.
A $1.5 million grant from The United States Department of Energy’s Office (DOE) of Vehicle Technology is helping speed up research, development and demonstration of the AMT system for commercial vehicle tires. A grant from the Luxembourg government for research and development will continue to help fund Goodyear’s efforts in researching and developing the AMT system for consumer tires.

1Goodyear (2003). Section 10: Factors Affecting Truck Fuel Economy. Radial Truck and Tire Retread Service Manual, pg. 64-81.
2Kotanides Jr., J. (2012).
3Statistic according to “The High Cost of Low Tire Pressure” by Mark S. Kuhar
4American Trucking Association, (2008). Tire Pressure Monitoring and Inflation. Heavy Duty Trucking Magazine.