horsepower ques.
2nd Gear
Joined: Aug 2007
Posts: 700
From: Earth
RE: horsepower ques.
actually, im going to disagree....while the FSI can improve HP, not 14 more in an already uber-efficient motor. The FSI will help efficiency more in this engine. The gain is going to be in the higher flow exhaust the S5 has, as well as in the better air intake system they can incorporate from the larger engine bay.
3rd Gear
Joined: Aug 2007
Posts: 2,847
RE: horsepower ques.
Im sure thats a factor too. This is form the the audi s5 website info.
FSI® direct injection technology increases the torque and power of spark-ignition engines, makes them as much as 15 percent more economical and reduces exhaust emissions. In contrast to conventional intake manifold injection on conventional spark-ignition engines, FSI® engines inject fuel directly into the combustion chambers. This technology dispenses with the throttle plate. That ‘unthrottles’ the engine, reduces heat loss and thus increases output while reducing fuel consumption.
The system uses two charge-air supply modes: stratified charge at partial load and homogeneous operation at full load. In the stratified charge mode, an combustible fuel-air mixture is only produced in a defined zone around the spark plug. The engine management electronics monitor engine load and adjust injection timing, pressure, quantity parameters as well as the air flow inside the cylinder via the air intake channel. At full load, FSI® increases compression as well as engine efficiency and performance.[
I just feel that audis justification for increasing the HP rating on the same motor would be the addition of the FSI system. FSI is used in the RS4 and R8 v8's too
FSI® direct injection technology increases the torque and power of spark-ignition engines, makes them as much as 15 percent more economical and reduces exhaust emissions. In contrast to conventional intake manifold injection on conventional spark-ignition engines, FSI® engines inject fuel directly into the combustion chambers. This technology dispenses with the throttle plate. That ‘unthrottles’ the engine, reduces heat loss and thus increases output while reducing fuel consumption.
The system uses two charge-air supply modes: stratified charge at partial load and homogeneous operation at full load. In the stratified charge mode, an combustible fuel-air mixture is only produced in a defined zone around the spark plug. The engine management electronics monitor engine load and adjust injection timing, pressure, quantity parameters as well as the air flow inside the cylinder via the air intake channel. At full load, FSI® increases compression as well as engine efficiency and performance.[
I just feel that audis justification for increasing the HP rating on the same motor would be the addition of the FSI system. FSI is used in the RS4 and R8 v8's too
Thread
Thread Starter
Forum
Replies
Last Post