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Tires

[Due to the increasing size of the archives, each topic page now contains only the prior 365 days of content. Access to older stories is now solely through the Monthly Archive pages or the site search function.]

Tire-integrated triboelectric generator harvests electricity from rolling tire friction; est. up to +10% fuel econ

June 30, 2015

A group of University of Wisconsin-Madison engineers and a collaborator from China have developed a triboelectric nanogenerator (TENG) that harvests energy from a car’s rolling tire friction. An innovative method of reusing energy, the nanogenerator ultimately could provide automobile manufacturers a new way to squeeze greater efficiency out of their vehicles.

The TENG is a novel energy harvesting device to convert mechanical energy into electricity based on the universally known triboelectric principle—i.e., the generation of an electric charge resulting from the contact or rubbing together of two dissimilar objects. Specifically, the nanogenerator relies on the triboelectric effect to harness energy from the changing electric potential between the pavement and a vehicle’s wheels.

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Cooper Tire completes work on $1.5M DOE project to develop fuel efficient tires, exceeding targets

May 04, 2015

Cooper Tire & Rubber Company completed work under a $1.5-million government grant to develop advanced tire technology aimed at increasing vehicle fuel efficiency. The grant, awarded by the US Department of Energy (DOE) Office of Energy Efficiency and Renewable Energy, called for Cooper to develop technology for light vehicle tires that delivered a minimum 3% improvement in vehicle fuel efficiency while lowering average tire weight by at least 20%, all without sacrificing performance.

Cooper was successful in developing technologies that exceeded the project’s goals, delivering an average fuel efficiency improvement of 5.5% and weight reduction ranging from 23% to 37% in concept tires.

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Cooper Tire begins testing tires made with guayule component; consortium progress on genomics, agronomics

October 22, 2014

Cooper Tire & Rubber Company has completed tire builds using rubber derived from guayule plants and new guayule related materials. The tires are being evaluated by Cooper’s technical team using wheel, road and track tests, which are ongoing, but to date suggest tire performance that is at least equal to tires made of components derived from the Hevea rubber plant.

This development was reported by Cooper to its consortium partners—PanAridus, Arizona State University, Cornell University, and the Agricultural Research Service of the United States Department of Agriculture (USDA-ARS)—as the group met recently in Maricopa, Arizona for its third annual meeting and progress report on their $6.9-million Biomass Research and Development Initiative (BRDI) grant, “Securing the Future of Natural Rubber—An American Tire and Bioenergy Platform from Guayule.” (Earlier post.)

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ORNL team tailors the structure of carbon black from waste tires to create higher performance carbon anode material for Li-ion batteries

August 28, 2014

Researchers at Oak Ridge National Laboratory (ORNL) have tailored the microstructural characteristics of carbon black recovered from discarded tires to produce a higher performance, low-cost carbon anode material for Li-ion batteries.

Electrochemical studies reported in their paper published in the journal RSC Advances showed that the recovered-carbon-based anode had a a reversible capacity of nearly 390 mAh/g of carbon anode after 100 cycles—exceeding the best properties of commercial graphite. Researchers attribute this to the unique microstructure of the tire-derived carbon. Anodes made with the sulfonated tire-rubber-derived carbon and a control tire-rubber-derived carbon exhibited an initial coulombic efficiency of 71% and 45%, respectively.

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DOE to award more than $55M to 31 projects for plug-in and efficient vehicle technologies; Delphi receives $10M to further GDCI

August 14, 2014

The US Department of Energy (DOE) is awarding more than $55 million to 31 new projects to accelerate research and development of vehicle technologies that will improve fuel efficiency and reduce costs under a program-wide funding opportunity announced in January. (DE-FOA-0000991, earlier post.) These new projects are aimed at meeting the goals and objectives of the President’s EV Everywhere Grand Challenge (19 projects), as well as improvements in other vehicle technologies such as powertrains, fuel, tires and auxiliary systems (12 projects).

The largest single award ($10 million) goes to Delphi Automotive Systems to further the development of its Gasoline Direct-Injection Compression Ignition (GDCI) low-temperature combustion technology (earlier post) that provides high thermal efficiency with low NOx and PM emissions. The largest number of awards (9) in a single area of interest goes to developing beyond Li-ion battery technologies.

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