Latest electric turbos

[Joesson]

At the bottom of the page on that link is a discussion about :
"Cars for $15K That Will Hold Their Value: Window Shop with Car and Driver"

Guess what car the first guy up proposed!

Not sure the proposal met with universal approval...

As is said in the NOP and such like, 1 in 5 of those interviewed were in favour that means 20% approved!
(Of course it could be taken that 4 in 5 were not in favour and 80% did not approve).
I'll settle for our car being described, by one of the dissenters, as " more interesting than a Miata".

[Petrus]

https://www.youtube.com/watch?v=VBiHg5feKIU

the main issue with the concept being unmentioned; that is is a restriction when not boosting.

NOx at least does not cost power to charge nor restricts flow.

Bóth systems are basically boost only though coming at a weight penelty.
I think I´d rather spend the money on permanently added lightness ;-)

[1979scotte]

https://www.youtube.com/watch?v=VBiHg5feKIU

the main issue with the concept being unmentioned; that is is a restriction when not boosting.

NOx at least does not cost power to charge nor restricts flow.

Bóth systems are basically boost only though coming at a weight penelty.
I think I´d rather spend the money on permanently added lightness ;-)

One of the systems got around that by spinning up enough to match the air flow of the engine.
Obviously it used power without gaining you any boost but didn't cost any bhp.

[gon]

they are mainly used for eliminating turbo lag and not as a separate boost solution.
Even at 48V they will never get past 10KW or so and that is miles away from a turbocharger.

https://jalopnik.com/this-is-how-audis-electric-supercharger-works-to-elimin-1823681637

I worked on the above project, it was interesting but short lived as hybrid cars do the "turbo lag elimination" with High voltage electric traction motors, as such the industry lost interest and there is not enough aftermarket volume to justify the cost (at least for the company I worked with, other might have a different opinion).

[Petrus]

they are mainly used for eliminating turbo lag and not as a separate boost solution.
Even at 48V they will never get past 10KW or so and that is miles away from a turbocharger.

https://jalopnik.com/this-is-how-audis-electric-supercharger-works-to-elimin-1823681637

I worked on the above project, it was interesting but short lived as hybrid cars do the "turbo lag elimination" with High voltage electric traction motors, as such the industry lost interest and there is not enough aftermarket volume to justify the cost (at least for the company I worked with, other might have a different opinion).

Ok, you have convinced me; NOS it is ;-)

No, seriously, I think you nailed it on the head. It is never going to be something beyond a hobbyists after market niche.

[1979scotte]

they are mainly used for eliminating turbo lag and not as a separate boost solution.
Even at 48V they will never get past 10KW or so and that is miles away from a turbocharger.

https://jalopnik.com/this-is-how-audis-electric-supercharger-works-to-elimin-1823681637

I worked on the above project, it was interesting but short lived as hybrid cars do the "turbo lag elimination" with High voltage electric traction motors, as such the industry lost interest and there is not enough aftermarket volume to justify the cost (at least for the company I worked with, other might have a different opinion).

Ok, you have convinced me; NOS it is ;-)

No, seriously, I think you nailed it on the head. It is never going to be something beyond a hobbyists after market niche.

Excuse me Garretts E turbos fitted to the next gen MB AMG.
Hardly niche.

[Petrus]

Excuse me Garretts E turbos fitted to the next gen MB AMG.
Hardly niche.

E-turbos are not all the same and the ´hybrid´ ones with exhaust gas and electric drive plus energy recuperation wíll see development.
I was referring to e-only turbos.

[1979scotte]

Excuse me Garretts E turbos fitted to the next gen MB AMG.
Hardly niche.

E-turbos are not all the same and the ´hybrid´ ones with exhaust gas and electric drive plus energy recuperation wíll see development.
I was referring to e-only turbos.

Perhaps we should call them electric superchargers

[Petrus]

Perhaps we should call them electric superchargers

E-only yes, agree, because ´turbo´ infers the exhaust gas drive turbine thus an e-turbo ´should´ have both.

[gon]

yes, dont get the 2 in the same pot.
The electric supercharger is likely to be reliable as it does not have to deal with the extreme temperatures of the exhaust nor with the extreme rotational speeds of the turbocharger.
The electrically assisted turbocharger we are yet to see... either there is a huge temperature differential between both edges of the device or I don't see them being reliable (and I mean reliable as in lasting 10 years and 200k miles , not lasting as in lasting 10 races ...)

Perhaps with seperate electronics/inverter the main motor can get to 200Degc and if it is located on the inlet side then maybe it's reasonable ... but ... there is always a big but ... a good turbocharger these days spools above 200K RPM and there is no electric machine that goes that fast, so most likely they will have to compromise the max speed of the device to integrate an electric motor...

[1979scotte]

yes, dont get the 2 in the same pot.
The electric supercharger is likely to be reliable as it does not have to deal with the extreme temperatures of the exhaust nor with the extreme rotational speeds of the turbocharger.
The electrically assisted turbocharger we are yet to see... either there is a huge temperature differential between both edges of the device or I don't see them being reliable (and I mean reliable as in lasting 10 years and 200k miles , not lasting as in lasting 10 races ...)

Perhaps with seperate electronics/inverter the main motor can get to 200Degc and if it is located on the inlet side then maybe it's reasonable ... but ... there is always a big but ... a good turbocharger these days spools above 200K RPM and there is no electric machine that goes that fast, so most likely they will have to compromise the max speed of the device to integrate an electric motor...

I think technology moves on ridiculously fast and they won't need to compromise the exhaust gases just take over.