New Anti Lag Turbo System

[chuntington101]

There is already a compressor that gives you boost no matter your RPM. It's called a positive displacement supercharger!

Why not just run one of these and the have a power recovery turbine to recover some of the thermal energy from the exhaust? (This was done back at the end of WW2).

[227bhp]

The Spruce goose said:

Would an electric fan/turbine be better, if there is one available?

Using an electric motor to spool a turbo or a completely electric turbo have already been done.

[anonymous-user]

Trust me, developing a gearbox and shaft orbit/thrust control system for a high speed dynamic compressor is non trivial......

[anonymous-user]

Here's one i did earlier:


Supergen


(and i now have the grey hairs to show for it.......)

[SIAhmad]

Looks amazing max torque, I can imagine it being a pretty difficult task. Which part in designing it did you find the hardest?
Any idea why they aren't used more commonly in production vehicles? Is the cost prohibitive / reliability?

Edited by SIAhmad on Sunday 29th November 17:15

[andygtt]

Could the 'bleed off' from the turbo system not be stored during full throttle and then released through the turbo during closed throttle for same effect but for free?

If this was to be successful then the air would need to go somewhere and you will increase the pressure in the system behind the throttle body significantly (or superheat the air?) and thus it might oveboost when the throttle is opened again?

[EricE]

SIAhmad said:

Any idea why they aren't used more commonly in production vehicles? Is the cost prohibitive / reliability?

Many manufacturers are working on these electrical superchargers at the moment, expect them to be more common in the near future. One factor is that they require a 48V on-board electrical system as opposed to the current 12V standard. The new Q7 & Bentayga already made the switch to the higher voltage system.

http://www.greencarcongress.com/2014/08/audi-movin...

[AW111]

Max_Torque said:

Here's one i did earlier:


Supergen


(and i now have the grey hairs to show for it.......)

pffft - facts and experience. What place have they on the internet?

[AntiLagGC8]

Volvo released their new anti-lag device which uses compressed air;

http://jalopnik.com/volvos-powerpulse-technology-a...

Interesting!

[Equus]

chrisgtx said:

I if remember correctly. There was a caterham hill climb car which ran a similar set up using a helicopter turbine to keep the boost up. I'll try find it.

Not quite a Caterham, but I think it's the Manic Beattie you're thinking of.

Very successful, and still competing on the Hills.

OP: Without wishing to sound patronising, that's very impressive and innovative thinking for someone of your age and experience - well done indeed!

[chuntington101]

AntiLagGC8 said:

Volvo released their new anti-lag device which uses compressed air;

http://jalopnik.com/volvos-powerpulse-technology-a...

Interesting!

I thought Volvo was working on an electric supercharger to complement the twin turbos? Well it was on it's petrol engines anyway....

Although I wonder what this would be like on a petrol motor with a little anti-lag.

[Ive]

A few videos of the manic hill climb car. All wheel drive as well

https://youtu.be/6EMleegZQLw
https://youtu.be/11687nVdzdk
https://youtu.be/gFNnXOAAhWI


The car uses a APU turbine powering a turbo compressor to provide permanent boost to e piston engine. Zero lag :-)

[anonymous-user]

^^^^ impressive if complex / heavy solution to the issue. The inline post engine combustor we developed at Prodrive was a much more elegant solution. For a hill climb car I'd use a medium voltage LIPO battery and brushless motor S/C these days

[GTiRichTea]

Bobby Shaftoe said:

IIRC an American firm back in the 1960's had developed and marketed a self powered turbo, along with other such madness as a rocket powered rear differential (that actually drove the rear wheels, rather than solely providing thrust) for drag racing.

I think your talking about the Turbonique Drag Axle instant 1000bhp from a turbine powered by rocket fuel connected to the rear axle an amazing thing especially in the 60's.
http://www.tunersgroup.com/tunerwire_live/turboniq...

I think also remember some kind of compressed air tank anti lag maybe in a escort cosworth rally car which was used and then banned.

Great project and really interesting.

[anonymous-user]

GTiRichTea said:

I think your talking about the Turbonique Drag Axle instant 1000bhp from a turbine powered by rocket fuel connected to the rear axle an amazing thing especially in the 60's.
http://www.tunersgroup.com/tunerwire_live/turboniq...

I think also remember some kind of compressed air tank anti lag maybe in a escort cosworth rally car which was used and then banned.

Great project and really interesting.

The Prodrive S7 scoot had "hidden" tanks in the bumper cover voids, but the escort WRC just stuck a huge ally tank across the back of the passenger cabin. A max post restrict or intake volume rule was
Introduced after two events to outlaw all these systems

[BogBeast]

I see that Rotrex is now doing electrically assisted superchargers - http://www.rotrex.com/Home/Products/Variable-Speed...

[k20erham]

Eaton have had a TVS under development 2 years or so with electric assistance and clutch drives all clever stuff, some very very clever bods have done all this some years ago, makes one feel humble indeed

[chuntington101]

I can see the benefit of an electronically assisted Rotrex style blower but NOT a TVS. They are positive displacement anyway so will be making boost very early on anyway.

[Pri91]

Going to have to have to booomark this page. Currently doing my third year dissertation and I am looking into introducing electric assistance to (cheaper) downsized turbocharged engines.