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Old 01-03-2014, 05:35 PM   #1 (permalink)
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Mpguino on a carberutted motorbike.

I have recently traded in a 2001 fzs which had an ultragauge installed.

It's a small computer that replaces the fuel gauge and taps into fuel level, rpm, speed pulse etc. It also had a feature that could provide fuel economy readings.

It did this by tapping into the fuel pump. Then pump was a diaphragm type which would pump up, then hit a contact which would turn the pump off again, essentially providing a "click per liter".

It seemed to work pretty well and was fairly accurate.

Each click had a defined amount of fuel flow (my setting was 1778 clicks per liter).

Would the Mpguino work using this fuel pump click instead of an injector pulse?

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Old 01-07-2014, 01:30 PM   #2 (permalink)
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It sounds like it would work. You'd have to determine the length of time (in microseconds) for a given click.
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Old 01-07-2014, 01:38 PM   #3 (permalink)
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Is it possible to set a range? I suspect the time will change based on the amount of fuel being pumped?
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Old 01-07-2014, 01:42 PM   #4 (permalink)
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It's not possible to set a range on click length. From how I understand how this fuel pump works, it's not really necessary, either.

If it takes 1778 clicks for this thing to pump a liter, you could measure the on-time for these clicks, and calculate the average value for microseconds per liter by dividing your total on-time measurement by 1778.

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