Re: electric supercharger
Originally Posted by uclaXfire
I bow to old school EE master.
I am about to wrap up my M.S. EE soon, hence springing for the new car.
Originally Posted by uclaXfire
does that mean to properly trick the system, you must measure the MAP, and provide (intelligently, not thru a freaking resistor) a suitable air pressure to maintain the air fuel ratio?
However, my original question about the partial throttle opening and increase air flow has more to do with the efficiency of the combustion process. If we were able to increase the air density slightly at 1/4 throttle how does that fair against 1/4 throttle naturally aspirated?
chung
Question/answer #1,
Actually, if you don't have access to the power enrichment tables in the Engine Management Computer about the only thing you can do is increase fuel pressure with a variable fuel pressure regulator. Take the car to the dyno and make a few runs with a wide band O2 sensor in place. You would adjust the fuel pressure regulator until you got about 12.7:1 air fuel ratio for max performance. This only affects WOT (wide open throttle or Power Enrichment mode).
Question/answer #2,
If I understand the question, 1/4 throttle would be restrictive enough to maybe allow 100 cfm to pass into the plenum. If you tried to force a little more air at 1/4 throttle maybe 150 cfm the engine would initially lean out then the O2 sensor would detect a lean condition and ask the BLM (block learn mode) to update the volume metric efficiency table. RPM would pick up.
Last edited by Wayne1992; Feb 5, 2006 at 01:00 PM.