Fiat Multiair Technology Explained

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Tags for this video: Fiat Multiair Technology

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if you watched the ... ( 1 year ago by shalmaneser)
if you watched the video then you'd know it's not. It is a big deal.
Actually, it's VTEC ... ( 1 year ago by 787Bisurdaddy)
Actually, it's VTEC, not "V-Tech," and VTEC doesn't incorporate variable valve timing... i-VTEC does.
VVT doesn't incorporate different cam profiles, but VVT-i (gotta love these name schemes) does. i-VTEC and VVT-i do the same thing, but started out from different directions.
Array ( 1 year ago by ohmannhey)
@UncleGiun
I believe the first Common Rail Diesel was in the Fiat Croma ... ;-)
Тез клапани колко ... ( 1 year ago by AngelDimov85)
Тез клапани колко пъти ще се отварят да вкарват горивна смес???
and Fiat was the ... ( 1 year ago by anassgame)
and Fiat was the first whos product the TURBO DIESEL  IN 1948.
That is cool... ... ( 1 year ago by Cypern)
That is cool...Fiat rocks
Array ( 1 year ago by TheAXL35784)
@787Bisurdaddy
i-VTEC and VVT-i don't control the valve lift and timing in efficient mode as Multiair, because they can't work on full range of engine rpm.
PS : sorry for my english
Rebuilding these ... ( 1 year ago by richardmaudsley77)
Rebuilding these cylinder heads is going to be a huge pain in the arse. I'm wondering why this isn't on the Exhaust valves though.
@richardmaudsley77 ... ( 1 year ago by shamarone)
@richardmaudsley77 i think it's been found that very little is gained from mods on the exhaust side...? at least not enough to warrant the added cost and complexity. since it's "before" the combustion event, anything that optimises volumetric efficiency (turbocharging, supercharging, porting, VVT, direct injection, etc.) yields the biggest returns. this seems to hold true for most engines. rotary, piston, turbine, gas, diesel, motorcycle, car, truck, airplane, etc.
ok NOW i see why ... ( 1 year ago by shamarone)
ok NOW i see why this won engine of the year...? it is basically just variable valve timing, something that honda and most mfgs now all have a spin on. but, being able to "double tap" a valve during an intake stroke is definitely something not done before. this is analagous to the multi injection events being employed by modern common rail diesels. what we're seeing is prolly the first commercial application of F1 valve control learned from ferrari. albeit hydraulics substitute for pneumatics.
for all it's "cool ... ( 1 year ago by shamarone)
for all it's "cool factor" there is a sobering reality to machine design and mass production. added complexity ='s more failure points and so begets 2 questions that will probably be best answered in time...? #1, how reliable is it...?  and #2, what's it cost in parts and man hours to repair if and when it does break...? and trust me... it WILL break. EVERYTHING fashioned by man inevitably breaks.
Why not make it in ... ( 1 year ago by lbgagliardi)
Why not make it in conjunction with direct fuel injection?
I don't quite get ... ( 1 year ago by bigmedge)
I don't quite get it, what's the difference between Multiair & any other variable valve timing technology?
@bigmedge Todays ... ( 1 year ago by MrLowAltitude)
@bigmedge Todays engines with variable valve timing can (As the name says.) adjust the timing of the valve. The opening time and stroke remains, they just shift the timing of the valves.
With multiair, they are able to control not only the timing, but also the stroke and opening time. So you don't need a throttle body anymore because you can control the air flow with the stroke and opening time of the valves! It's genius!
@MrLowAltitude ... ( 1 year ago by viperxraptor2001)
@MrLowAltitude ferrari could use this technology
site me some ... ( 1 year ago by AdMiRaLeDpIeTt)
site me some examples of HP and how many liters for this to work.
yipeee! - finally ... ( 9 months ago by testacorsa150)
yipeee! - finally a real step forward in petrol engine technology. So much more fun and responsive to drive that a diesel.
Array ( 9 months ago by ConteZero76)
@AdMiRaLeDpIeTt
Search Alfa Romeo MiTo multiair on wikipedia.
1.400cc TBI Multiair delivers 170cv.
FIAT THE BEST ( 9 months ago by anassgame)
FIAT THE BEST
I think that now ... ( 9 months ago by viperconcept)
I think that now it's better to invest in other energy resources. Gasoline is going to be obsolete now.
more to go wrong ( 7 months ago by davebig28)
more to go wrong
Yet it's not GDI? ... ( 5 months ago by moondogcow)
Yet it's not GDI? why?
They need to get ... ( 1 month ago by SirMosesWellington)
They need to get GDI on the MultiAir engines. I know its harder and more expensive to make GDI, but it should be cheaper and better than doing MultiAir. And if you combine the 2, then add a turbo and maybe that 9 speed auto from ZF ;) gonna be awesome.


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