Audi A3: turbo FSI engine compression ratio
07-22-2004, 06:38 AM
#14
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Does an FSI engine lower the intake temperature much? There'd have to be a =big= decrease to
compensate for 10.5:1 compression.
I also wonder about the fuel injectors. If they're already operating at >1500psi and you turn up the boost, would they be able to overcome the increased pressure inside the cylinders?
Rory
I also wonder about the fuel injectors. If they're already operating at >1500psi and you turn up the boost, would they be able to overcome the increased pressure inside the cylinders?
Rory
07-22-2004, 06:49 AM
#15
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I don't know any numbers
but an R8 runs 1.67 bar (or maybe it's .67 bar???) using this technology. But then again, the engine prolly gets rebuilt after ever race. But we know it can run 24 hours straight.
07-22-2004, 07:30 AM
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noo i'll just use a paintbrush ;)) , j/k i'll do it my self using a spray
i painted things couple times ..1/4 of one of my previous cars too..came out really good 
learned alot from my father , he does it in his free time among many other things (car related)
learned alot from my father , he does it in his free time among many other things (car related)
07-22-2004, 08:07 AM
#17
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"Though 200hp from a 2L isn't exactly earth-shattering... "
But a 200HP/205ft-lb 2.0T that averages 30mpg is pretty impressive.
The 1.8T in a similarly sized vehicle (Golf) might average 27mpg. So the A3 has a 10% increase in power and displacement, but a 10% decrease in fuel consumption.
The old AWD Eclipse 2.0T might have averaged 24.
Subaru wrx might only average 24.
Couple that with a 25% reduction in emissions and kudos to Audi engineers all around.
And AFAIK this is only the first mass production of the Turbo FSI powerplant. Evolution of the motor may yield more power, better fuel economy, and less emissions.
The 1.8T in a similarly sized vehicle (Golf) might average 27mpg. So the A3 has a 10% increase in power and displacement, but a 10% decrease in fuel consumption.
The old AWD Eclipse 2.0T might have averaged 24.
Subaru wrx might only average 24.
Couple that with a 25% reduction in emissions and kudos to Audi engineers all around.
And AFAIK this is only the first mass production of the Turbo FSI powerplant. Evolution of the motor may yield more power, better fuel economy, and less emissions.
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