At 8:20 PM +0000 2/8/03, olympus-digest wrote:
>Date: Sat, 08 Feb 2003 11:33:16 -0800
>From: siddiq <iddibhai@xxxxxxx>
>Subject: Re: RE: [OM] [OT] No more big SUV (fuel and air mass-flow meters)
>
>2/8/2003 11:16:40 AM, Joe Gwinn <joegwinn@xxxxxxxxx> wrote:
> >
> >OM Content: My Volvo-brand camera transporter likes single-digit OMs best,
> >and measures airfolw with a hot-wire anometer. The wire
>is made of platinium. Don't know how the fuel flow is measured.
> >
> >Joe Gwinn
>
>i'd think by measuring injector pulse length, as mentioned before. somehow i
>doubt an inline-flow measuring device can be accurate
>enough, easier to measure to how long injectors are open since they put out a
>set volume multiply by length pulsed.
Sounds plausible, although one would also need to compensate for variations in
fuel viscosity with temperature, a matter of table look-up.
I too have a dynamic miles-per-gallon (MPG) dashboard meter, and its answers
are always plausible, and the dashboard long-term MPG dashboard agrees with
manual computations from gas-purchase receipts, so the car must have an
accurate method of measurement.
Joe Gwinn
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