Still cool if the gearbox can be omitted in car applications.
Do EV's have gearboxes?
Model S/X/3/Y all have a reduction gear but no multi-speed transmission, same for all others other than the Taycan.
Hunstable Electric Turbine can produce up to 3x the torque of other motors
21–30 of 48 posts
Re: Hunstable Electric Turbine can produce up to 3x the torque of other motors
#22Earlier quoted context omitted.
Do EV's have gearboxes?
Some do, some don't. The Koenigsegg hybrid (so not strictly an EV, but can be operated as a pure EV) famously don't have a gearbox but a single, fixed reduction gear. There is a hydraulic coupling for the electrical motors to allow slow speeds. At higher speeds the coupling is mechanically locked to directly connect all engines to the wheels. https://en.wikipedia.org/wiki/Koenigsegg_Regera https://www.koenigsegg.com/…
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Re: Hunstable Electric Turbine can produce up to 3x the torque of other motors
#23Light expert analysis of this motor (it's nothing special and not manufacturable): https://www.anttilehikoinen.fi/technology/evaluation-of-the-...
Re: Hunstable Electric Turbine can produce up to 3x the torque of other motors
#24The key quote from the linked article seems to be "It’s essentially two concentric radial motors bookended by two axial ones." My question is where's the cooling? You can put more magnetic field and torque into an ever smaller area, always true, but still going to have to dump heat out via some path. And the bigger the path for whatever is cooling, the lower the magnetic flux density and torque. So I'd be interested…
Generally speaking, airplane engines avoid gearboxes for reliability reasons.
Re: Hunstable Electric Turbine can produce up to 3x the torque of other motors
#25The motors are not really taking up a lot of useful space in the car and are not underpowered by any stretch so this tech needs to be price competitive. Like Hyundai said batteries are where we need to see advances. Don't get me wrong it is interesting and I am glad to see advances but I don't see this as a terribly useful advance today.
Perhaps it has its place -low-velocity lightweight vehicles? They are starting with a scooter, so perhaps they agree.
Re: Hunstable Electric Turbine can produce up to 3x the torque of other motors
#26Light expert analysis of this motor (it's nothing special and not manufacturable): https://www.anttilehikoinen.fi/technology/evaluation-of-the-...
Having read the article you linked that seems to be a misrepresentative summary of it.
Re: Hunstable Electric Turbine can produce up to 3x the torque of other motors
#27The key quote from the linked article seems to be "It’s essentially two concentric radial motors bookended by two axial ones." My question is where's the cooling? You can put more magnetic field and torque into an ever smaller area, always true, but still going to have to dump heat out via some path. And the bigger the path for whatever is cooling, the lower the magnetic flux density and torque. So I'd be interested…
The aerospace suggestion would also lend itself to battery-powered passenger flight, which is starting to creep into the realm of feasibility.
But the difficult bit is proving and scaling the tech. It looks like they're sensibly starting small, with e-scooters. I'm reminded of Mazda and the Wankel engine somehow; a "unique" topology that remained niche.
Re: Hunstable Electric Turbine can produce up to 3x the torque of other motors
#28Still cool if the gearbox can be omitted in car applications.
Do EV's have gearboxes?
The Mitsubishi Outlander phev, which only directly powers the wheels with the ICE in specific modes, uses only a hydraulic clutch for that purpose. There might be a fixed gear reduction somewhere, but no true gearbox.
Re: Hunstable Electric Turbine can produce up to 3x the torque of other motors
#29Light expert analysis of this motor (it's nothing special and not manufacturable): https://www.anttilehikoinen.fi/technology/evaluation-of-the-...
Having read the article you linked that seems to be a misrepresentative summary of it.
Yep, I've also read the linked article and for me the summary is more like "HET motor has some interesting ideas, some difficulties, some claims are incorrect and it's probably a bit difficult to manufacture."
Re: Hunstable Electric Turbine can produce up to 3x the torque of other motors
#30Call me when they have put it on a dyno next to a Tesla or some other reasonably efficient EV powertrain.
Until then total snake oil crying for attention.