Air-to-Fuel Ratio question

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Nov 20, 2008 | 06:51 PM

xxblazexx

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From: garden grove, ca, usa

Air-to-Fuel Ratio question

I know 11 parts air to 1 part fuel is the ideal AFR but what is the unit of measurement?
mass? weight? volume? number of molecules?
and I searched and I got nothing

Last edited by xxblazexx; Nov 20, 2008 at 11:29 PM.

Nov 20, 2008 | 07:06 PM

gstrudler

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From: Oregon City, OR, USA

11:1 is extremely rich. 14.7:1 is stoichiometric and I believe around 13.2:1 is MBT (mean best torque).

I'm pretty sure it refers to volume, but now that you ask I'm not 100% sure.

Nov 20, 2008 | 11:29 PM

xxblazexx

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From: garden grove, ca, usa

bump!
such a basic question and yet no one knows the answer >_<

Nov 21, 2008 | 04:20 AM

mmuller

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From: tallafizzy, FL state

its a ratio, 1 gallon of fuel per 11 gallons or air, 1 spaceship full of gas to 11 space ships full or air

Nov 21, 2008 | 06:59 PM

Scott_Tucker

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From: Ben Lomond, Ca, USA

It's actually weight. Roughly 14.7 lbs of air is required to burn 1 lb of gasoline completely. 14.7 lbs of air is about 42,000 gallons. 1 gallon of gasoline weighs roughly 6 lbs so that's over 250,000 gallons of air required to burn 1 gallon of gasoline.