Seems to me like a good deal, 10% lighter than the 1368cc and 85bhp.
Discuss
Discuss
Technical 900cc TwinAir - who wants one in their Cento?
- Thread starter Eklipze3k
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Technical 900cc TwinAir - who wants one in their Cento?
ECU etc = ££££
all that ££££ could be better spent.
end of discussion
all that ££££ could be better spent.
end of discussion
OP
OP
Errr, no camshaft? Certainly looks like there's one in this video ...
[nomedia="http://www.youtube.com/watch?v=aEwvej-n544"]YouTube- Fiat Twin Cylinder Engine exposed[/nomedia]
[nomedia="http://www.youtube.com/watch?v=aEwvej-n544"]YouTube- Fiat Twin Cylinder Engine exposed[/nomedia]
wow this looks like it could be a good conversion but here is an idea for it,
find an insurance write off one and get the full car, yes i know it will be hard to find, but if you find one it would be a fantastic and new and unique conversion
if some one does it i will defo be watching it closely
find an insurance write off one and get the full car, yes i know it will be hard to find, but if you find one it would be a fantastic and new and unique conversion
if some one does it i will defo be watching it closely
I think the downside to this is it's going to be fly by wire, ECU will then throw a wobbler so you would have to convert to fly by wire.
A 900CC twin cylinder engine with a low blow turbo sounds a bit dodgey, but the torque from it would be very interesting. Wonder what the limits of that engine is, whether it can see you up to 130bhp on some big boost.
Wonder if it can be bored out to 1ltr.
Thanks
A 900CC twin cylinder engine with a low blow turbo sounds a bit dodgey, but the torque from it would be very interesting. Wonder what the limits of that engine is, whether it can see you up to 130bhp on some big boost.
Wonder if it can be bored out to 1ltr
.Thanks
I can't see one there, and I know there isn't one.
Works with air to open and close the valves (hence Multi-Air), this reduces frictional losses and gives you more power. It shows the Multi-Air unit coming from the top of the engine at about 50s into that video
Thanks
Sion
OP
OP
So the chain driven camshaft at 1:42 isn't a camshaft then?
Edit: I'm not being rude, I don't know a lot about how engines so clarity is educational
Ok, the camshaft does not operate all the valves in the traditional sense.
Would still need a dedicated ECU
Cheers
D
I think, even with a complete car, it would be very hard to integrate all the ECUs into a cento.
These wierd modern cars have several ECUs that 'talk' to each other. Miss one out, say body control module, and the other ECUs would fail to perform because they were missing information.
Cheers
D
it would be nice to see someone really look into this and see what systems are linked and so on
So, being a Fiat newbie in every sense of the word, how exactly does the cam operate the valves if not by the lobes opening them at preset timed intervals? Also, how does the whole set up work with both pistons moving up and down together. Would that not cause balance/vibration issues? I am totally confused. Nice video though.
Nice video though.
The concept is that by using a camshaft the timing is fixed the only adjustment available is lift. By using pneumatics the timing is infinitely adjustable as well as the lift allowing the engine to run very efficiently over a greater range of engine speeds.
Cheers
D
Cheers
D
I thought they stopped using timing chains for a reason?
Thanks
Thanks
AFAIK there is no throttle body, so you do not have losses of efficency when the butterfly is not completely open. Hence you are forced to go fly by wire. The multiair system controls the opening of the inlet valves operating between the cam lobe and the valves, shutting them before they would normally shut if driven only by the camshaft when the throttle is not completely pushed down. Exhaust valves are moved traditionally.
I'd love to see this engine in a 126, if you look at this video, you can hear the noise resemble the old 2-cylinder engine of 500s and 126s.
Video: http://domus.cdn.pawstream.com/quattroruote/Fiat500TwinAir.flv
It'd make a total sleeper, awesome
The only downside, that in the video has a bloody heavy flywheel I think.
EDIT: Timing chains are cheap to mantain, you do not have to change them for many km.
I'd love to see this engine in a 126, if you look at this video, you can hear the noise resemble the old 2-cylinder engine of 500s and 126s.
Video: http://domus.cdn.pawstream.com/quattroruote/Fiat500TwinAir.flv
It'd make a total sleeper, awesome
The only downside, that in the video has a bloody heavy flywheel I think.
EDIT: Timing chains are cheap to mantain, you do not have to change them for many km.
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I don't get it. From what i seen,
There is a cam shaft, a crank, and a timing chain. But there isn't a set timing like the traditional engine ?????????
You say the multi air controls the valve opening, is that all controlled by the ECU?
Ming
There is a cam shaft, a crank, and a timing chain. But there isn't a set timing like the traditional engine ?????????
You say the multi air controls the valve opening, is that all controlled by the ECU?
Ming
The whole induction system is not as you would expect, its all controlled by the ecu. Think halfway towards a Formula one engine where there are no camshafts or valve springs.
Cheers
D
