Audi launched three new engines at the 2006 Paris Motor Show – one being a new 2.8 litre V6 FSI engine with Audi’s new valvelift system, a new 1.8 litre Turbo FSI engine and a new more powerful variant of the venerable 2.0 litre Turbo FSI engine that will find it’s way into the new Audi S3 hot hatch.
The new 2.8 litre V6 FSI engine which will debut in the Audi A6 makes 210hp at 5,500rpm as well as a constant peak torque wave of 280Nm between 3,000rpm and 5,000rpm. The new engine is a shorter stroke version of it’s 3.2 litre big brother, 82.4mm instead of 92.8mm, and retains the same bore of 84.5mm, making it a slightly oversquare configuration. The engine uses an alloy crankcase which gives it a weight of only 165kg. Precise 100 bar pressure FSI direct injection allows a high compression ratio of 12.0:1.
New to the engine is Audi’s valvelift system which gives the engine two valve lift profiles on the intake cam. The higher cam profile opens valve through 11mm, while the other cam opens the intake valves at two different lifts – one at 5.7mm and the other at 2mm. This is deliberately done for a swirl and tumble flow effect for intake air. The transition between the two cam profiles is smoothened out via a combination of tricks like temporary retardation of ignition, adjustment of camshafts and closing of throttle valves.
A slightly different style of how an engine is built is shown in the form of the new 1.8 Turbo FSI engine. The new 1.8 TFSI engine has higher pressure six-hole injectors – up to 150 bar. A watercooled Borg Warner K03 turbocharger gives the 1.8 TFSI engine a good torque figure of 165Nm at just 1,000rpm, and this peaks at 250Nm slightly further up in the rev range at 1,500rpm – this figure stretches all the way up to 4,200rpm. Peak horsepower is 160hp from 5,000rpm to 6,200rpm. Compression ratio is lower than the 2.0 TFSI though, at only 9.6:1 compression.
The final engine is the new motor that goes into the Audi S3 hot hatch, an updated 2.0 TFSI with a higher power of 265bhp at 6,000rpm and a stronger peak torque of 320Nm constant up to 5,000rpm. To keep up with the stronger boost, the engine features pistons with stronger pins, stronger conrods and a reinforced cylinder block made of a new highly heat-resistant alloy.
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With high compression ration of 12 to 1, usage of high octane fuel is a must. Sadly such car wouldn't happen to operate it's maximum performance here in Malaysia with lower rating of fuel octane….not to mention the shorter life span of the engine.
FSI has no worry of engine knocking, even without the usage of higher octane fuel. That's the beauty. ;)
Awesome man!
But I am still drooling over VAG's 1.4L twin-charged FSI motor…
Yeah, Twin charged – 170hp for 1.4 liter road tax. Awesome. I wonder how the buyers of B7 1.8T would felt since the new 1,8TFSi will definitely be brought on later. But i wonder the justification over a 1.8TFSi and 2.0TFSi; ain't them a bit too close to each other?
the outputs for 1.8t and 2.0t are so far apart, of course there's a justification. in fact, looking at the 2.0t figures, it's even more powerful than the 2.8 v6!
You are right Charger, thanks for correcting me; myself had check several online America mag and they had stated that the engine runs smooth even putting 87 Octane fuel into it, though usage of 91 octane fuel it's advisible….it simply fasinating
Ingolstadt,
Your observation's right.
In Bolehland, there may be no place for the 1.8TFSI in the A4 unless it replaces the B7 1.8T (just introduced!) at the similar price level…
Whatever it may be, long live FSI + forced inductions!
yesterday i saw a stoopid fella in kancil (with sepot ekzos) trying to race an Audi A4 at traffic light…i laugh all the way while driving home :D
Well dont look down on kancil man.. If the kancil fitted wif a L2/L5 turbo inside.. I think it can win it in 100-300meter.. But after that loss loo.. Coz no top speed haha..
agreed. Sometimes this little monsters can out drag a fully mod civic in the qtr.mile run.
FSI is the way to go now especially with rocketing fuel prices.
Car to car comparison and similar driving style, the FSI engined Audi faired much better in fuel consumption as compared even with the A4 B6 variants with CVT Gbox.
Audi engines can be liken as the european version of Honda ,being able to compress more and more stallions into a tight engine block, and yet with only low fuel consumption needed.
german technology rox !