but we have a throttle limiting the amt of air entering the engine (unless
you have a diesel).

John
Aircooled.Net Inc.

----- Original Message -----
From: "mike elliott" <camping.elliott@GMAIL.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Saturday, November 24, 2007 5:26 PM
Subject: Re: Calculate fuel consumption when idling?

> Do you win? Heck, I don't know. I'll take a shot at it. Watch me get
> it spectacularly wrong.
>
> The 1.9L engine has 475cc displacement per cylinder. I think two
> cylinders fire per revolution, so at 900 rpm we got 900 x 2 x 475 =
> 855cc of air per minute being sucked into the engine. If the mixture
> is a good stoichiometric one, we'd have about a 1:15 fuel:air mass
> ratio. Air has a mass of 1.3g per liter, so that's .855 x 1.3 = 1.1kg
> of air per minute, with being one-fifteenth of that, or 74g per
> minute. At 60 minutes that's 4.4kg of fuel. Gasoline masses roughly
> 740 grams per /liter, so that's 6 liters, roughly 1.6 gallons U.S. per
> hour.
>
> Those are the numbers I come up with and I bet they're within an order
> of magnitude of being right.
>
> Mike "Rocket J Squirrel" Elliott
>
> On Nov 24, 2007 3:52 PM, Matthew Snook <matt@snooksband.com> wrote:
> > 0.9375?  Is that right?  Do I win?
> >
> > :)
> >
> > At 60mph, mine's turning @ 3200rpm.  It will burn 3 gallons doing that.
3
> > gallons per hour at 3200rpm.  But it idles at 1000rpm.  So that comes to
> > 0.9375 gallons per hour at 1000rpm.  Of course there's no wind
resistance at
> > that speed, so maybe less...
> >
> > Matthew Snook (@ ~3000 ft)
> >
> >
> >
> > -----Original Message-----
> > From: Michael Elliott
> > Subject: Calculate fuel consumption when idling?
> >
> > A properly-tuned 1.9L WBX engine would consume how many gallons of
> > gasoline per hour when idling at sea level? Would this be significantly
> > different at 6,000 feet?
> >
> >
>
> !DSPAM:4748b1c081151569112627!
>
>