Speaker: Walter Bunting, Director OEM AP, Director CTS Driveline AP, Afton Chemical Asia Pte Ltd

The electrification of drivetrain systems has been a move that cannot be reversed, along with global emission rules that are becoming more stringent and the search for increasing efficiency. Annual NEV sales in Asia are rising very quickly, particularly in the Chinese market. In order to better meet the need for fluid in eMobility applications, numerous industry organizations have started their own task forces to develop new testing procedures or ETF specifications. As hybridization (hybrid and PHEV) and BEVs continue to coexist in Asia for the foreseeable future, wet motor integration, high rotational speed, improved efficiency, and longer durability, as well as high voltage systems, will be major technology development trends for eDrivetrain systems.

Along with the introduction of new materials and tougher operating conditions into the eAxle system, we identified eight important performance characteristics for a new EDF design, three of which have a significant impact on eAxle efficiency: fluid viscosity, traction coefficient, and thermal property. Lower fluid viscosity could significantly reduce fluid churning loss to boost efficiency in an eAxle system with high rotation. However, the protection provided by ETF against excessive pressure and wear performances on gears and bearings may be compromised by a thinner fluid coating brought on by a lower fluid viscosity, therefore a strong additive technology is required to offer adequate hardware protections.

Lower traction coefficients could enable for smoother gear mesh due to substantial friction reductions, resulting in improved mechanical efficiency. In addition, wet motor design necessitates increased ETF cooling power to stabilize motor operational temperature and maintain constant power and torque output.

Registration closes on October 25, at 5:00 PM SGT.

Free for ALIA members (Please make sure your membership is active). For non-members, tickets are US$50 each person.