Aircon as supercharger
Aircon as supercharger
Author
Discussion

jonbarrett

Original Poster:

800 posts

219 months

Tuesday 21st August 2007
quotequote all
Just to prove how dull I am, is an aircon pump the same as a small roots blower? If so, what is the cfm of the 4.5 aircon pump and how fast would it need to run to be an effective super charger.

Assumming it would need to run way beyond its design rpm it would need some form of lubrication system and would overhead and die anyway.

Just a mad idea. Don't flame me too bad!

Hold on, it gets better! A full throttle microswitch could be wired to the air con clutch and an Emerald ECU with two maps, one for supercharged, one without. Thus, during normal driving the engine would run uncharged, then, hit the throttle, charger and map cuts in and off you go!

Please discuss.

dkennedyvxt

242 posts

251 months

Tuesday 21st August 2007
quotequote all
Just to show how mechanically minded I am......you lost me at "JUST" smile

GreenV8S

30,956 posts

301 months

Tuesday 21st August 2007
quotequote all
jonbarrett said:
Please discuss.
sillybiggrin

Tanguero

4,535 posts

218 months

Tuesday 21st August 2007
quotequote all
Sorry - the displacement of an air con compressor is fairly miniscule compared to how much the engine needs to breathe normaly. It works a bit like the cheap tyre inflators - tiny amounts quite highly compressed, which is why they take so long to do anything!


Byker28i

77,337 posts

234 months

Tuesday 21st August 2007
quotequote all
erm...have you seen the size of a supercharger compared to your air compressor. The ac compressor pumps gas around a system designed to cool. A Supercharger pumps large volumes of air.

Different beasts for different jobs

cerbieboy

292 posts

224 months

Thursday 23rd August 2007
quotequote all
where is the ac compressor on the car. mine seems to have stopped working. checked all fuses.

GreenV8S

30,956 posts

301 months

Thursday 23rd August 2007
quotequote all
cerbieboy said:
where is the ac compressor on the car. mine seems to have stopped working. checked all fuses.
Perhaps it needs recharging?

cerbieboy

292 posts

224 months

Thursday 23rd August 2007
quotequote all
yes maybe , but i need to know it has it first, i am sure i've seen the light on before, but have read a thread on here saying that having an ac button dont mean th car has ac, dont want to turn up 'please top up my ac gas' find it doesnt have and get laughed at......

Mr Cerbera

5,144 posts

247 months

Tuesday 10th November 2020
quotequote all
.... and as an additional idea to the O/P

What about replacing the A/C Pump with a Mercedes Supercharger ?
(Like the one on the SLK ?)

TwinKam

3,351 posts

112 months

Tuesday 10th November 2020
quotequote all
There is at least one s/c Cerb running around out there, it was at the SRR day last December. It was running a centrifugal type (looks like a turbo).... made 540 bhp

Penelope Stopit

11,209 posts

126 months

Tuesday 10th November 2020
quotequote all

julian64

14,317 posts

271 months

Tuesday 10th November 2020
quotequote all
Penelope Stopit said:
hehe 2bar, and all you would have to do is drive round and round a local powerplant with a lead attached between the car and the powerplant.

Penelope Stopit

11,209 posts

126 months

Tuesday 10th November 2020
quotequote all
Keep up at the back

Tesla and others run on batteries, latest battery technology is achieving much

2 bar is more than 29 PSI

julian64

14,317 posts

271 months

Tuesday 10th November 2020
quotequote all
Penelope Stopit said:
Keep up at the back

Tesla and others run on batteries, latest battery technology is achieving much

2 bar is more than 29 PSI
I don't doubt the pump can produce 2 bar. I just doubt your cerb can produce the necessary 600A.!! hehe that's a mighty alternator you are planning there.

Penelope Stopit

11,209 posts

126 months

Tuesday 10th November 2020
quotequote all
julian64 said:
Penelope Stopit said:
Keep up at the back

Tesla and others run on batteries, latest battery technology is achieving much

2 bar is more than 29 PSI
I don't doubt the pump can produce 2 bar. I just doubt your cerb can produce the necessary 600A.!! hehe that's a mighty alternator you are planning there.
Read it as worded, reads like 2 bar isn't worth having

Yes your bang on with the high current consumption

That above supercharger is a load of bks, it's drawing more than a twin starter motor system

You make a good point

Still good though innit, would be great for a bit of fun using it for several seconds every 20 minutes or so, mmmm maybe not

I don't own a cerb, simply try and help fixing electrical issues or in this case cause one big one

gruffalo

7,951 posts

243 months

Tuesday 10th November 2020
quotequote all
Penelope Stopit said:
Keep up at the back

Tesla and others run on batteries, latest battery technology is achieving much

2 bar is more than 29 PSI
Yeah but dragging around a ton of battery would somewhat dull the handling of a Cerbera.

a1rak

556 posts

200 months

Tuesday 10th November 2020
quotequote all
I once thought about using a high reving 125cc bike engine to drive a supercharger.
Plenty of room in front of the engine. You could adjust the boost by adjusting the revs of the bike engine
have a throttle cable connected to the accelerator pedal so it follows the Cerb engine. Not as mad as it sounds as the fuel, cooling system, electrics are all there in the engine bay. Mad may be, but a better than a 600amp electric charger. Probably ruin the Cerb sound track though.

Eventually opted for a more traditional route.

Penelope Stopit

11,209 posts

126 months

Tuesday 10th November 2020
quotequote all
a1rak said:
I once thought about using a high reving 125cc bike engine to drive a supercharger.
Plenty of room in front of the engine. You could adjust the boost by adjusting the revs of the bike engine
have a throttle cable connected to the accelerator pedal so it follows the Cerb engine. Not as mad as it sounds as the fuel, cooling system, electrics are all there in the engine bay. Mad may be, but a better than a 600amp electric charger. Probably ruin the Cerb sound track though.

Eventually opted for a more traditional route.
Great idea, get it on the market

Kawasicki

13,787 posts

252 months

Tuesday 10th November 2020
quotequote all
julian64 said:
Penelope Stopit said:
hehe 2bar, and all you would have to do is drive round and round a local powerplant with a lead attached between the car and the powerplant.
2 bar boost, for a 45 cc engine at idle.

ruggedscotty

5,907 posts

226 months

Tuesday 10th November 2020
quotequote all
https://www.motor1.com/news/139005/supercharged-ja...

reminds me of this... a supercharger ontop of a V8 driving a fuel pump to supply fuel to the main engine....

thinking of alternative methods for getting boost for a car engine ?

compressed air tanks charged by an air compressor during normal driving, and when required those air tanks being used to supply extra air

or as said before a small displacement engine used to drive a fan to supply air as and when required ?

fine in theory but is all the theory fully understood, how much hp is required to prodiuce the required air pressure for the engine ?