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Old 06-09-2011, 10:10 PM   #28 (permalink)
actwithclarity
Underground Man
 
Join Date: Apr 2011
Location: Canada
Posts: 71

Lil Blue - '91 Geo Metro
90 day: 52.54 mpg (US)
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Quote:
Originally Posted by PaleMelanesian View Post
Here's how I interpret the BSFC charts. If you're on the gas, put it in the efficient zone. Approximately 1500-2200 rpm and ~75% throttle. In most cases that makes you accelerate. So you hold that zone until reaching the upper speed limit (either legal or self-imposed). Then go to neutral and coast for a while. I do engine-off coast which saves even more fuel. Then get back in gear (bump-start if EOC) and do another pulse. Repeat repeat repeat...

I find slightly better results at lower rpm - centered at 1700 or so - instead of the 2000+ the charts usually show.
The chart I linked seems to show 3000 RPM as the best?

I don't understand, if I am at 3000 RPM, how do I know if I am at 25, 50, or 80 torque?
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