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Old 08-22-2008, 11:32 PM   #1 (permalink)
bbjsw10
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Join Date: Jul 2008
Location: Findlay,OH
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bbjsw10 - '91 Geo Metro Xfi
90 day: 51.06 mpg (US)
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Deceleration Alternator

I was thinking tonight about making my alternator kill, into a deceleration alternator. Would give me atleast a couple extra miles of run time that way.

I am using a Potter-Brumfield 70a relay to disconnect the output, and a Bosch 30a relay to kill the field wire. I was thinking of putting in a switch like this.
Nitrous Oxide Systems (NOS) 15640NOS - NOS Micro Throttle Switches - summitracing.com
on the throttle to be activated at idle position, but also connected to the clutch pedal through a set of relays as well, Basically only allowing it to run alternator when clutch is engaged and throttle is at idle. This way avoiding pretty much all conditions except for neutral idling, and deceleration.

I figure if the car is idling it might as well be doing something, and DFCO sounds like a good time to charge the battery to me.

Suggestions? If it sounds feasible I could possible get some diagrams started and a How-to. I have it stuck in my brain and need to get it out.

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