Re: MPG Meter - Cadillac, Lincoln, Imperial
From: Brian Holm (peugeots@vtlink.net)
Date: Sat 27 Mar 2004 - 19:29:27 EST
At 07:29 AM 3/27/2004, you wrote:
> If you want the MPG displayed while driving, then you have to devise
> some type of electronics system to tell you.
>***That is what I was asking the List for. I was hoping that one of the
>wizards doing the turbo boost circuits could help with this circuit.
>As for economy driving, carb or injected, a vacuum gage connected to the
>intake manifold plenum chamber, after the throttle plate, not on a single
>intake runner, will give you some idea of throttle position. At a steady
>cruise speed on flat ground, the vacuum would be high. If you open the
>throttle some, the vacuum drops off. In any fuel supply system I can think
>of, the larger the throttle opening, the more fuel is supplied to the
>engine. The larger the throttle opening, the less vacuum you will see.Some
>cars have vacuum advance units on the distributors, and the larger
>throttle openings give less ignition advance, and less MPG.
>***But it is still the case that dropping down a gear, or two, will give a
>higher vacuum reading, but that is probably inverseley related to fuel
>consumption, so how do you know what gear to be in for maximum mpg?
>A vacuum gage mounted where you can see it easily, would be an aid to
>keeping a light foot on the the throttle. That gets better MPG, no matter
>how you look at it.
>***I have driven with a dash-mounted vacuum gauge for years in several
>different cars. I have learned what I can from that. Including an
>aversion to the constant clicking of the gauge.
***I like to drive fast. Any fool knows that driving slower saves fuel; I
would like to see what the actual cost in fuel consumption is as speed
increases. I like to take a hilly dirt road commute; I want to compare
fuel consumption between that and the paved road. I would like to see the
difference changing plugs, or oil, or tires, or tire pressures, or running
A/C or opening windows makes on mpg. I am not interested in homilies about
these things--I want to see comparable numbers.
>In your digital display, the smaller the throttle opening you have, the
>higher MPG reading would achieve.
>***This is one of the homilies I am not interested in, except as an
>hypothesis to be tested with an actual mpg gauge.
>Brian Holm
>
>Art Hughes Columbus, Ohio
>-------Original Message-------
>
>From: <mailto:peugeots@vtlink.net>Brian Holm
>Date: 03/26/04 19:44:27
>To: <mailto:pro4art@core.com>Art Hughes;
><mailto:peugeot-l@yahoogroups.com>peugeot-l@yahoogroups.com;
><mailto:akwanten@nourison.com>akwanten@nourison.com;
><mailto:PEUGPETE@AOL.COM>PEUGPETE@AOL.COM
>Subject: Re: [Peugeot-L] MPG Meter - Cadillac, Lincoln, Imperial
>
>But I want to know actual mpg.
>____________________________________________________
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Brian Holm, Parts for Peugeots
at Peugeot Holm, since 1969
2120 Maple Hill
Plainfield, VT, 05667
802-454-7132, fax -1310
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