worth it or not?
any ideas welcome


carl

 

Yes, as long as its not at the expensense of airflow (ie restrictive airboxes).

Pre comp w.i. works well when done right

 

yes, but how u going to do it? the same method would have a greater effect on the hotter compressed air.

 

hmmmmm....


thanks for the replies,...

rick,...thinking some sort of aircon unit, sent through the air filter pipe, but will the pipe going through the air filter pipe disturb the air flow too much and fook it up some how,..???


come on steve,...you input is valued indeed

 

IIRC Ford own some kind of patent which relates to some type of evaporator / condenser set-up thats used to cool the induction charge... never seen it or any similar system used though

 

May as well use the aircon to cool the boosted air rather than the pre-turbo air.

But generally thats not used as its more efficient just not to have aircon full stop (weight and power sapping pumps mainly).

The colder the air is that goes into the turbo, the colder it is going out, increasing efficiency, effectivley moving the compressor map over a bit.

Only worthwhile way tho IMO (barring decent cold air feeds etc) is pre-comp water (or nitrous) injection.

Pre-comp water inj is more effective at dropping temps than at any other point.
Just needs to be done right to not cause damage to the compressor wheel.

 

No - the pipe isn't the problem. How are u going to drive the aircon unit

 

or instead of just a straight pipe going through filter pipe, it could be coiled,....

 

why not just get a better intercooler?

 

Aircon uses power, as much as you'll gain

 

Air con evap would freeze up as you need a calculated continuous air flow to match the cooling load..

 

cause the colder the air, the more that can be compressed in a certain space,....



so theres no point the way i was thinking then,...

but its still worthwhile if dont right????

 

doesnt sound all that bad matt but it would be activating it or banging out loads of compressed oxygen into your engine bay bit of a fire risk matey

 

James has it spot on. Unfortunetly it is impossible, by definition, to create more power by using a process which relies on the engine making power. Thats's why intercoolers dont work at standstill.

 

only with pre comp water/nitrous inj, which is done a fair bit, and has been since WW2 and before.

 

Err?

Superchargers and turbos create power using a process that relies on the engine making power

 

hmmmmmm



this has been playing on my mind for years now.....now and again i get a bit of inspiration and come up with an idea,...but i dont work....

 

You could create an absorbtion type cooling system which would use the heat of the exhaust to drive the cooling system...caravan fridges and he like powered by gas or electric heater use absorbtion....

 

And also USE engine power to make them work

 

I know, thats my point.

But they make more than they use.

Which is my point.

 

Only worthwhile way tho IMO (barring decent cold air feeds etc) is pre-comp water (or nitrous) injection.

Pre-comp water inj is more effective at dropping temps than at any other point.
Just needs to be done right to not cause damage to the compressor wheel.[/quote]

how this done then? is it just inj a few inch from comp wheel?

 

Using aircon wont make more power that's my point

 

inches from comp wheel and air cool already?????

 

Depends how effective it will cool it, dont see how its not possible, if done right. But just rigging up a standard aircon setup isnt a good call.

Ive seen cars, even LeMans cars, use refrigerant to cool the inlet charge.

 

Wouldnt if done right, as per said, been done before.

Pre compressor would be pointless tho.

Only fluid/gas injection pre comp is worthwhile.

 

how is it done right then? is it just std water inj or does it have to be done finer/thicker?

 

surely water injection would make the air moist, rather than just colder,....

wouldnt moist air make the turbo work less effective,....





by the way,...finally an interesting, eductative post,...and whats fucked up is i started it,..lmao....

 

Fine (not nececerally finer than usual, depends what your usual is ).
Ideally sprayed direct at the the centre nut of the compressor, as if too far away or off centre it will pool along the edges of the pipes, just making a stream of water.

It will work fine if bigger droplets or mounted in a conventional way, but the bigger drops of water are more likely to gradually erode the compressor wheel.

 

yes but its harder to heat moist air than dry? or is it just the evaporation process cooling it down?

 

so what if it wasnt water,....and some sort of chemical that would not corode the turbs




maybe this is getting away too much from what i was thinking, and into something thats already been done a billion times before....

 

Look, just trust me, it bloody works

If pre-compressor water injection didnt work we'd all be speaking german as wedve prob lost WW2

 

if its being sucked into the turbo at a billion miles per hour,.....it wont have time will it???

 

Don't forget that if you use this method to get the throttlebody entry temps down, and map it into your ecu, and then you have a problem with it, surely it's just another physical thing to go wrong.

In my opinion the best way is to just rely on a super efficient intercooler - this only goes wrong if you wrap your car around a tree!

Surely the hassle of plumbing in a pre-turbo air cooler wouldnt justify the benefits gained from running it??

 

does it work better than inj in to charge air?

 

At dropping charge temps, yes, purely as its got the most time to do it before the engine.

At lowering in cyl temps, no, as you want that as close to the engine as poss.

Thats why serious cars run pre compressor as well as dirst port w.i.

 

brilliant


what about then,.....


rigging a small engined car injector in the airfilter pipe, and wiring that to feed off a normal injector so when it pulses, it injects said pipe,....