BorgWarner has secured a contract to deliver its high voltage eFan system for use on a major global OEM’s series of heavy-duty battery electric vehicles (BEVs) in North America. The contract marks BorgWarner’s largest eFan business win in North America, with the start of production slated for Q4 2027.
BorgWarner’s eFan system consists of three components, including a fan, e-motor and integrated high-voltage inverter and has the capacity to reach up to 10 kW power and 40 Nm torque. With options for low- and high-power segments, the system is designed to accommodate a wide range of operating temperatures spanning from minus 40 degrees Celsius up to 80 degrees Celsius. The modular design of the system allows customers to scale components of the eFan to meet their specific requirements and standards.
Additionally, the fan geometry is optimized at speeds less than 3,000 RPM which reduces overall noise, especially for sensitive vehicle scenarios like battery charging. The eFan system supports voltage ranges from 550V-850V, guaranteeing compatibility across a wide variety of high-voltage commercial vehicle electric systems. A key feature of the technology is that the e-motor and power electronics within the eFan are liquid-cooled for compactness and robustness, promoting reliability in long-term operation.
Volker Weng, Vice President of BorgWarner Inc. and President and General Manager, Turbos and Thermal Technologies said, “As the industry continues to put a heavy focus on reducing emissions, the need for high-performing power electronic components is essential. Our sophisticated and efficient eFan system has the scalability to meet specific customer requirements, with a wide voltage range and liquid-cooling for long-term reliability.”
BorgWarner’s eFan portfolio includes a variety of different heavy-duty commercial vehicle applications, including both BEVs and fuel-cell electric vehicles. For high-power segment applications, its eFan systems are capable of up to 40 kW and 160 Nm.
