Video Exclusives


Inside Arctic Falls' Indoor Flex facility

Sentury

Raw footage taken in the new test hall at the Swedish proving ground, scheduled to open later this month

Click here to watch the video


Michelin launches recycling campaign

Sentury

The French tire maker has unveiled its ambitious future recycling strategy to ensure that by 2048, all of its tires are manufactured using 80% sustainable materials, and 100% of all end-of-life tires are recycled.

Click here to watch the video


A glimpse at Nokian's new test facility

Sentury

A rendering of the tire maker's new technology center in Spain shows what the facility will look like when it is complete in 2019. Find out more in the March 2018 issue (p60) of TTI

Click here to watch the video


In what year did Bridgestone officially launch its first run-flat tire?

Web Exclusive Articles

« back to listing

Nanogenerator harvests energy from rolling tires

A new nanogenerator that harvests power from rolling tires has been developed at the University of Wisconsin-Madison, USA

by Rachel Evans

 

A group of engineers from the University of Wisconsin-Madison in the USA and a collaborator from China have developed a nanogenerator that harvests energy from a car’s rolling tire friction. This could enable auto manufacturers to gain greater efficiency out of their vehicles by using the recovered energy to charge the car’s battery.

Xudong Wang, an associate professor of materials science and engineering at UW-Madison, and his PhD student Yanchao Mao have been working on this device for approximately a year.

The nanogenerator relies on the triboelectric effect to harness energy from the changing electric potential between the pavement and a vehicle’s wheels. The triboelectric effect is the electric charge that results from the contact or rubbing together of two dissimilar objects. The nanogenerator takes advantage of energy that is usually lost due to friction.

“The friction between the tire and the ground consumes about 10% of a vehicle’s fuel. That energy is wasted, so if we can convert it, it could give us very good improvement in fuel efficiency,” Wang explains.

The nanogenerator relies on an electrode integrated into a segment of the tire. When this part of the tire surface comes into contact with the ground, the friction between those two surfaces ultimately produces an electrical charge - a type of contact electrification known as the triboelectric effect.

During initial trials, Wang and his colleagues used a toy car with LED lights to demonstrate the concept. They attached an electrode to the wheels of the car, and as it rolled across the ground, the LED lights flashed on and off. The movement of electrons caused by friction was able to generate enough energy to power the lights.

“The nanogenerator was installed on the surface of the tire in the prototype device, however the ultimate design is to integrate it inside the tire, so that it won’t wear out,” Wang notes.

The researchers also determined that the amount of energy harnessed is directly related to the weight of a car, as well as its speed. According to Wang, the technology could be easily scaled up and may only require an additional fabrication step in tire manufacturing.

“Right now I am still working on the design of how to effectively realize this requirement,” he says. “We are also testing the system on a real car and it has shown a much higher energy output, but still more work needs to be done to make the output more regular and quantitative. The next key step will be to come up with a smart design to integrate the nanogenerator inside a real tire and test it.”

August 12, 2015

 

RECEIVE THE
LATEST NEWS


Your email address:



Read Latest Issue

Read Latest Issue

Read Latest Issue

Web Exclusives

Arctic Falls' Indoor Flex facility now operational
The grand opening of Arctic Falls' new Indoor Flex facility, which will offer new tire and vehicle testing possibilities, is scheduled for the end of June.
Read Now

ETRMA consolidates used tire management data for 2016
Data gathered by the ETRMA from 32 countries in the EU shows that 94% of used tires in 2016 were collected and treated
Read Now

BKT in R&D tie-up with Kultevat
Indian tire giant BKT has entered into a research and development partnership with US biotechnology firm Kultevat to further the use of TKS rubber as a substitute for natural rubber
Read Now

Completely truckworthy
Bridgestone America's director for commercial tire development, Mitchel Kritzell, gives an update on the SuperTruck II program
Read Now

Q&A: Sam Visaisouk, CEO, Tyromer
The Retread Tire Association (RTA) speaks with Tyromer CEO, Sam Visaisouk, about the testing of its new tire-derived polymer recycled rubber product in truck and passenger car tires
Read Now


Supplier Spotlight

Supplier SpotlightWe are building a list of leading suppliers covering all aspects of the tire industry. Want to see your company included? Contact olivia.campbell@ukimediaevents.com for more details.

Submit your industry opinion

Industry BlogDo you have an opinion you'd like to share with the tire technology community? We'd like to hear your views and opinions on the leading issues shaping the industry. Share your comments by sending up to 500 words to rachel.evans@ukimediaevents.com

Submit Your Recruitment Ad

Recruitment AdTo send us your recruitment advertising or to receive information on placing a banner please email olivia.campbell@ukimediaevents.com