Posted on 07/14/2022 6:30:24 AM PDT by Red Badger
Tier-one auto parts supplier Mahle has announced a groundbreaking "superior continuous torque" (SCT) motor for electric vehicles, capable of continuously pounding out more than 90 percent of its peak power without overheating – and it'll work without magnets.
Electric motors, unlike combustion engines, are often specified with separate peak and continuous (or nominal) power ratings. That's because running them flat-out for long periods can generate enough heat to damage components, so manufacturers build in thermal limiting systems that reduce power output down to the continuous level when they start overheating. The difference between the peak and continuous figures reflects the performance of the motor cooling system.
Here are a couple of examples. At the cheaper end of the scale would be something like the e-motor in the Ox Patagonia electric motorcycle. Peaking at 11 kW, it's so badly cooled that it can only handle a continuous 6 kW – 55 percent of the peak power. Energica's fancy new EMCE motor, on the other hand, peaks at 126 kW, but can handle a continuous 110 kW (87 percent of the peak) thanks to a very effective cooling system.
Mahle – a huge German parts supplier consistently posting sales over US$10 billion a year – says its new SCT motor takes things up a notch, with continuous power ratings over 90 percent of the peak. It uses an innovative oil cooling system that draws in oil through a central intake, then uses the centrifugal force of the spinning rotor to pump the oil up and around the stator coils surrounding it. The heat drawn out can be harvested for use elsewhere around the vehicle if required, or extracted through a radiator.
(Excerpt) Read more at newatlas.com ...
Ozzy Osbourne is The Prince of Darkness!.........................
competition
Is Lucas still around?
I think I had a motorcycle way back where the previous owner had put
Mahle pistons in it - if same company they have been around for years
Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.