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Japan’s Honda Motor has co-developed the world’s first hybrid car motor without using heavy rare earth metals, which it says will reduce its dependence on the expensive materials.
Hybrid vehicles combining a gasoline engine and electric motor have become increasingly popular in many countries, but sourcing a steady supply of rare earth elements such as dysprosium and terbium has been a challenge.
In 2010 China imposed a temporary ban on exports of rare earth minerals to Japan as the two nations engaged in territorial disputes.
Honda, Japan’s third-largest automaker, said that its new motors used magnets developed by Daido Steel Co that do not contain dysprosium and terbium.
This reduced the cost of producing the magnets, a key component in motors, by about 10 per cent while making them nearly eight per cent lighter, Honda said.
The new motors will be used in the next Freed minivan to be unveiled in the autumn.
Honda started looking to reduce the use of heavy rare earth metals 10 years ago, but a spike in prices around 2011 prompted the tie-up with Daido, the company said.
“This technology will lower our costs and reduce our exposure to price fluctuations,” a Honda official told reporters.
The redesigned motor still uses the light rare earth element neodymium, which is found in North America and Australia, as well as China.
Honda is aiming for new-energy vehicles, including gasoline-electric hybrids, plug-in hybrids, battery-electric and fuel cell vehicles to account for two thirds of its line-up by 2030, from around five per cent now.
Honda announced in June that it will release a new model of the Freed compact minivan in a few months’ time. The current model was released in May 2008, and this will be the first time in eight years that the vehicle has been fully remodelled.
