Vehicle & Technical > Discovery
HiClone air swirler
Lord Shagg-Pyle:
I fitted a pair in an effort to improve fuel use etc etc, along with Kenlowe fans, but with the added weight of H/D bumpers, winch and rock sliders, what good had been done by Hiclones, was probably reversed by the added lumps of steel! :roll:
The theory behind them is good, but..............
thermidorthelobster:
From the theory of how they work, by the time the air's been sucked into the engine I can't see they would make a blind bit of difference. I'm convinced this is purely a psychological effect, like the car goes quicker when you've cleaned it. If you want to think it's made a difference, you'll think it has.
A few years ago people were buying "electronic superchargers" for 400 quid or so. The idea was you stuck one in your air intake and it forced more air in. It turns out they were basically computer CPU fans (worth about £2), so had about as much power as a rabbit sneezing. There was no way on god's earth they'd have made any difference at all to hundreds of litres of air rushing through an intake. But people who had just shelled out 400 quid swore blind they did.
There seems to be a correlation: the more money you waste, the harder you brain tries to convince you it was well spent. In fact, now I think about this, Oracle and SAP have built global businesses on the strength of this :lol:
Range Rover Blues:
You know what they say about a fool and his money.....
Horness if you ever find them let me know, I think the LSE would be a good test as it's faily consistant in it's use and economy (lack thereof) so any change would show up.
As for the theory, well yes it could work, in a lab on a bluleprinted engine, but in the real world ona production unit the amount of turbulence within the inlet will vary engine to engine anyway. And if the insides get filthy........
BTW, I notice snorkel cropped up in the conversation somewhere, what's that about exactly? all they will do is slow down the flow of air.
Arightpest:
Hi all :D
You say range rover blues
I notice snorkel cropped up in the conversation somewhere, what's that about exactly? All they will do is slow down the flow of air. :?
What evidence have you got that a snorkel restricts air flow in anyway. :?
How does a snorkel slow down the flow of air when they have an undisturbed access to a clean flow of air rather than pushed behind a grill or placed in a warn engine bay. Also many motor bike manufacturers have spent money developing systems called ram air effect using the system of an extended air intake placed at the front of the bike to force air into the carburettor.
Why is an extended air intake called an induction pipe in other forms of car performance tuning recommended? Is it due to the access of colder free flowing air aiding engine performance if not why would they recommend fitting the devise in the first place if it slowed the air flow down? :?
I know we use it to stop the engine drinking the river we are trying to drive through but I am not sure were you get the idea from that it hinders the engine when most people believe that an extended breather pipe in a free flowing column of air helps the air flow and combustion within the engine.
Please enlighten me.
If you prove me to be wrong with your theory I will gladly eat humble pie and apologise.
The pest
Range Rover Blues:
Ok, not being rude or picking any fights, but I have a degree in mechanical engineering and automotive design, I worked as a development engineer for Ford Motor company until they bought Jaguar, lost their shirt and laid us all off :roll:
I notice snorkel cropped up in the conversation somewhere, what's that about exactly? All they will do is slow down the flow of air.
What evidence have you got that a snorkel restricts air flow in anyway.
It's basic fluid dynamics, I won't confuse the hell out of you by talking about Reynolds numbers, but put anything down a tube and it takes kinetic energy away, especially if there are bends in the tube.
How does a snorkel slow down the flow of air when they have an undisturbed access to a clean flow of air rather than pushed behind a grill or placed in a warn engine bay. Under the hood you have a large volume of air that is at least the same pressure as the air outside, if not a little higher, though it will be warm.
Also many motor bike manufacturers have spent money developing systems called ram air effect using the system of an extended air intake placed at the front of the bike to force air into the carburettor. Ram air is a bit of a myth, the effect can work and indeed does, but I suspect it has as much to do with the stickers on the bike as the true effects. However if you understand the basics of fluid dynamics then there are areas around a body moving in a fluid that experience higher pressures, like the base of the windsceern for one. this can induce a draught, like the Aeroflow ventilation introduced on the facelift MkI Cortina that Ford continued to use until the Scorpio became too slippery for it to work. However the Snorkel is located at an area of negative pressure, the top of the windscreen, so I reseve judgement on that
Why is an extended air intake called an induction pipe in other forms of car performance tuning recommended? Is it due to the access of colder free flowing air aiding engine performance if not why would they recommend fitting the devise in the first place if it slowed the air flow down? Trade off of restricted airflow against the cooler air, you're right. The pipe itself does nothing unless you can place it in an area that allows the car's aerodynamics to force air down it. Also consider whether the induction pipe is a sealed part of the air system or merely delivers cold air to the vicinity of the airbox.
And also I've got one, it definitely doesn't make the car any faster.
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