Hydro-Québec subsidiary TM4 has joined with motor-maker Cummins to develop a plug-in hybrid powertrain for Class 7/8 transit buses.

TM4 equipped 5,000 buses in China with its electric powertrain last year.

The new system consists of a genset (Cummins’ Euro 2019 B4.5 engine coupled with TM4’s LSG130 electric generator), a TM4 SUMO electric motor, a 111 kWh Li-ion battery, and an external charging infrastructure.

“Our goal is to offer a system that can achieve 35 km EV range and benefit from the 450 kW fast charging infrastructure to recharge in less than 5 minutes,” said Robert Baril, Managing Director of TM4. “The range extender allows for peace of mind and significant flexibility.”

Source: TM4