Goodyear Announces Self-inflating Tires

Self-inflating Tire from Goodyear

Goodyear has announced a new line of self-inflating tires for commercial vehicles. The company’s innovative new tires make use of a new system that Goodyear calls “Air Maintenance Technology” (AMT), which automatically keeps tires inflated to their optimum pressure.

The concept is similar to the one employed by the Hummer H1 in the 90s, but there is one major difference: Goodyear’s self-inflating tires operate without the need for any external pumps or electronics. The graphic, below, should give you a good idea of how the system works.

Self-inflating Tire from Goodyear (infographic)
Click to enlarge.

The self-inflating tire system’s components are contained within the tire itself. The heart of the system is an internal regulator that detects when the air pressure drops below a factory-determined pressure. When pressure drops below that point, the regulator opens to allow air from outside the tire into the pumping tube. Air is forced through the pumping tube and into the tire cavity.

Of course, maintaining proper tire pressure reduces rolling resistance and increases a vehicle’s fuel efficiency – not to mention the potential safety benefits offered by Goodyear’s new AMT system. Installed on a few hundred thousand trucks, Goodyear’s self-inflating tires promise to save millions of gallons of fuel over a very short time.

Great stuff, in other words. Here’s hoping they make these for retail drivers sooner than later.

You can check out the company’s official press release, below.




Debut of Goodyear Self-Inflating Technology for Commercial Tires at the International Automobil-Ausstellung (IAA) Commercial Vehicle Show

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 Internationale Automobil-Ausstellung (IAA) Commercial Vehicle Show in Hanover, Germany.

Tire-related costs are the single largest maintenance item for commercial vehicle fleet operators with more than 50 percent of all truck and trailer breakdowns involving a tire in some way1. 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 optimized tire performance. Customers should receive the following key benefits from Air Maintenance Technology-enabled tires:

Improved Fuel Economy

Optimum tire pressure is key in the commercial market. It is estimated that for every 10 psi lost in tire inflation, there is a one percent2 loss in miles per gallon.

While one percent may seem insignificant, it could cost a truck owner over $627.00 in fuel, based on a vehicle that has a fuel consumption of 6.6 miles per gallon, runs 100,000 miles a year with a diesel fuel price of $4.10/gallon.

Prolonged Tread Life

AMT is expected to play a major role in optimizing tread life in the commercial tire market. Tires which are under inflated by ten percent decrease tread life by 9-16 percent4. By utilizing Goodyear’s Air Maintenance Technology, commercial vehicle fleet operators will be able to realize the full mileage potential of their tires, thus saving money by prolonging the use of their tires.

Optimized Performance

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 than that of consumer vehicles as their tires are larger, have higher inflation pressures, drive longer distances and carry much heavier loads. Commercial tires operate at a higher air pressure, typically 105 psi for commercial tires vs. 32 psi 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. An extensive fleet trial is planned to gather real-world information from customers in 2013.

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.

Source: Goodyear, via Gizmag.

 

Jo Borrás

I've been in the auto industry 1997, and write for a number of blogs in the IM network. You can also find me on Twitter, at my Volvo fansite, out on two wheels, or chasing my kids around Oak Park, IL.