SRI tyre concept harvests static electricity


A team of engineers in Japan from Falken’s parent company, Sumitomo Rubber Industries (SRI), together with Professor Hiroshi Tani of Kansai University, have developed a technology that could see tyres generate electricity during driving. The key to the tyre design is an ‘energy harvester’ that takes advantage of the build-up of static electricity – known as frictional charging – to produce power efficiently as the tyre rotates.

Inside the energy harvester are two layers of rubber, each covered in an electrode, along with a negatively charged film that interfaces with a positively charged film. When fixed to the inside of a conventional tyre carcass, the harvester generates electricity as the tyre deforms during rotation.

The team of engineers believe that the energy harvester could lead to practical applications as a power source for sensors used in TPMS and other automotive devices, removing the need for batteries.

The research has been selected by the Japan Science and Technology Agency as a Type FS Seed Project (meaning joint academia and enterprise) under the Adaptable and Seamless Technology Transfer Program through target-driven R&D. SRI has stated that it will continue to advance the research with support from the Japan Science and Technology Agency.


About Author

Adam divides his time as an editor between the worlds of aviation and motoring. These worlds may seem a little diverse today, but autonomous technology and future urban mobility is bringing them ever-closer. Adam is also chairman of the Vehicle Dynamics International Awards.

Comments are closed.