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First Look at 1.2TSi EA211 Engine and a Question
- Thread starter dephead2004
- Start date
Thanks a lot terryt. So here it is along with the question again:
Not seen any under bonnet pics so thought I'd post one with a question for the experts.
On the air intake are three closed tubes like Pan's Pipes. (circled) Are they to do with the turbo? Not had one before so never seen anything like this.
Help is appreciated
If your struggling posting images, have a look here - http://www.seatcupra.net/forums/showthread.php?t=239550
Shot in the dark here... but... are they there to generate turbulence in the airflow running into the inlet manifold?
If you look at the bottom of the picture, right at the grille, you can see the inlet pipe. The air runs through the airbox (and thus through the air filter), then past those 3 panpipes (I like that description!
), then - I presume - into the inlet manifold.
I think the big pipe to the right of that may be turbo-related. I haven't got my car yet but the 1.4 I looked at briefly on test drive looked pretty much the same.
As for 'why would you want turbulence in the air intake?', well, this is because when the fuel is injected into the cylinder, it will form an uneven mist. By introducing turbulent air into the cylinder, the clumps of fuel vapor get knocked around and spread out more evenly. This way, when Mr Spark comes along to the party, the fuel burn is more complete and effective, increasing power and reducing fuel consumption as a result of less unburnt fuel in the exhaust gases.
A long time ago I faffed around with a thing called an Ecotek Valve on my old 8v 1.4 Ibiza. This was a thing that you fitted onto the side of a breather hose which, allegedly, introduced turbulence into the air intake. In reality all it seemed to do was vibrate a lot, thus making a honking noise under acceleration, so I was driving around with an engine that sounded like it had a duck trapped under the bonnet.
If you look at the bottom of the picture, right at the grille, you can see the inlet pipe. The air runs through the airbox (and thus through the air filter), then past those 3 panpipes (I like that description!
), then - I presume - into the inlet manifold.I think the big pipe to the right of that may be turbo-related. I haven't got my car yet but the 1.4 I looked at briefly on test drive looked pretty much the same.
As for 'why would you want turbulence in the air intake?', well, this is because when the fuel is injected into the cylinder, it will form an uneven mist. By introducing turbulent air into the cylinder, the clumps of fuel vapor get knocked around and spread out more evenly. This way, when Mr Spark comes along to the party, the fuel burn is more complete and effective, increasing power and reducing fuel consumption as a result of less unburnt fuel in the exhaust gases.
A long time ago I faffed around with a thing called an Ecotek Valve on my old 8v 1.4 Ibiza. This was a thing that you fitted onto the side of a breather hose which, allegedly, introduced turbulence into the air intake. In reality all it seemed to do was vibrate a lot, thus making a honking noise under acceleration, so I was driving around with an engine that sounded like it had a duck trapped under the bonnet.
Well I think you may be right Bubbs. Grateful for that input. I have looked at the VAG diagrams of this engine but cannot see any mention of the Pan Pipes!
BTW The new Leon does not sound like a duck
BTW The new Leon does not sound like a duck
Possibly a set of Helmholtz resonators to reduce standing waves in the air column between the turbo and the air filter.
See: http://en.wikipedia.org/wiki/Helmholtz_resonator
The three large pipes will be:
1. Air intake to air filter
2. Air from filter to turbo.
3. Compressed air from turbo to intake manifold (and presumably intercooler).
Exhaust is at rear, intake is at front (reversed from my Ibiza 1.2 TSi engine).
See: http://en.wikipedia.org/wiki/Helmholtz_resonator
The three large pipes will be:
1. Air intake to air filter
2. Air from filter to turbo.
3. Compressed air from turbo to intake manifold (and presumably intercooler).
Exhaust is at rear, intake is at front (reversed from my Ibiza 1.2 TSi engine).
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