Dana’s motor and inverter joint venture, TM4, has produced its 12,000th TM4 SUMO electric powertrain for buses and commercial vehicles in China.

Initially introduced for China, TM4 SUMO systems are operating on electric buses in more than 20 cities, including Beijing, Tianjin, Shanghai, Suzhou, Chongqing, Shenzhen. Chinese original equipment customers include Higer, Yaxing, Foton, Yinlong and King Long.

“Our goal is to provide our customers around the world with a powerful and convenient solution to support their e-mobility initiatives,” said Dana CTO, Christophe Dominiak.

“The TM4 SUMO direct-drive electric powertrain is a solution that has been quickly adopted in China for its efficiency, reliability, ease of integration and low maintenance.

We are also quickly gaining market share in Europe, North America, and India, positioning Dana as a market leader in electrodynamic solutions.”

The TM4 SUMO system is optimised for medium- and heavy-duty electric and hybrid vehicles, such as six-to-18-metre buses, delivery trucks and shuttles.

By allowing direct drive operation, the system reduces powertrain complexity. A direct drive system yields more than 10% efficiency gains throughout the driving cycle, representing an equivalent gain in battery usage.

The TM4 SUMO systems can be optimised to offer driveline efficiencies to different vehicle platforms based on selected duty cycles.

The systems are designed and engineered at TM4 in Boucherville, Quebec, Canada and manufactured by its Chinese joint-venture, Prestolite E-Propulsion Systems in Weifang, Shandong province.

Both are equipped with high volume, flexible, and automated production lines and a large range of dynamometers and test cells, making it possible to conduct full validation and certification of electric and hybrid powertrains.

Prestolite E-Propulsion Systems (PEPS) is a joint venture between TM4 and Prestolite Electric Beijing.

TM4 is a joint-venture between Dana and Hydro-Quebec, Canada’s largest electricity producer and one of the world’s largest hydroelectric power producers.