Stuttgart-based
Mahle, a supplier of electric drives for the automotive sector, has developed a ‘new technology kit’ for electric motors that combines the advantages of its benchmark SCT (superior continuous torque) and MCT (magnet-free contactless transmitter) electric motors to provide ‘the perfect motor’, one that combines permanently high peak power, contactless (and thus wear-free) power transmission, the absence of rare earths, and maximum efficiency.
Mahle says dispensing with rare earths in MCT technology not only makes production more environment friendly but also brings advantages in terms of costs and raw-material security; it is also ‘particularly efficient at almost all operating points’.
“The MCT electric motor is characterised by high durability because the necessary transmission of electric currents between the rotating and stationary parts inside the motor is contactless and thus wear-free. Therefore, the motor is maintenance-free and suitable for a wide range of applications.
“Furthermore, with the SCT electric motor, Mahle currently has the most enduring electric motor in its range. The traction motor can operate at high power for an unlimited period of time, thanks to a new cooling concept that features integrated oil cooling that not only makes the e-motor robust but also allows the waste heat generated to be used in a vehicle’s overall system.
“The new e-motor is unrivalled in its small size, light weight, and efficiency. The extremely compact design also gives savings in material cost and weight; a lighter motor requires less material in production and at the same time increases the possible payload in commercial vehicles.”