Cummins test-drives new ePowertrain at Millbrook
A new electric powertrain for heavy-duty vehicles is undergoing track testing at Millbrook Proving Ground in Bedfordshire. The 17Xe ePowertrain, developed by Meritor (now part of Cummins) with Advanced Propulsion Centre consortium partners Danfoss’ Editron division and Electra, is been successfully demonstrated in a test Volvo FH tractor unit and differs from the majority of current electric heavy trucks by using a e-axle, with the traction motor integrated into the structure of the drive axle.
With output capabilities of 430kW continuous power (equivalent to 576 hp), the integrated 17Xe ePowertrain will power heavy-duty trucks and buses in 6×2 or 4×2 configurations. It is available in a range of ratios and with three-speed transmission capabilities.
Danfoss’ Editron division developed and supplied the high-power electric motor and high-efficiency silicon carbide inverter powering the axle. The electric motor will be based on a patented architecture and thermal management methodology exceeding the Advanced Propulsion Centre’s 2035 Roadmap targets for power density. As a result, only one motor will be required in the electric powertrain design, marking a significant step forward for the industry, as current alternatives usually need two motors to meet this product segment’s power requirements.
John Bennett, general manager ePowertrain at Cummins, said: “We’re excited to showcase the capabilities of the 17Xe ePowertrain.
“The compact, integrated design and power density are ideal for OEMs interested in developing future-proof, sustainable heavy-duty equipment. We look forward to working with our customers to accelerate decarbonisation of the heavy-duty vehicle market.”
Sunil Maher, Senior Project Delivery Lead, at APC said: “I am really proud to see this major milestone by demonstrating a fully integrated e-axle into a heavy-duty vehicle.
“Seeing this prototype vehicle in operation is a significant step to addressing net-zero transport challenges in the UK. I look forward to the next stage of development which will see technical improvements and further product variation, to deliver solutions for heavy-duty and commercial vehicles. The collaboration between Cummins, Danfoss’ Editron division, and Electra Commercial vehicles accelerates technology development, and with the funding support this enhances skills, and increases capabilities which strengthen the UK’s supply chain as well as safeguarding and creating jobs.”
The 17Xe ePowertrain has been developed as part of an APC Electric Powertrain Integration for heavy Commercial vehicles (EPIC) project, to support the commercial vehicle sector to meet future regulations targeting CO₂ reduction from 2025.
