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Old 05-18-2010, 02:18 AM   #85 (permalink)
Piwoslaw
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Join Date: Oct 2008
Location: Warsaw, Poland
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Svietlana II - '13 Peugeot 308SW e-HDI 6sp
90 day: 58.1 mpg (US)
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Quote:
Originally Posted by thecheese429 View Post
Why not just put a relay on the field control circuit? I have been thinking of disabling accessory belt items, and think that just "un-field" the alternator would prove satisfactory. I put a light bulb on the EGR valve to monitor when exactly it is engaged. My discovery was that it is active when the engine is cold or not under (some) load. When warm, it would de-activate as soon as I put a little more pressure on the pedal.

Why I mention that is that it could possibly be a way to make the alternator only come on during low-load times (when EGR is active)
This might be a good idea, though engines may differ among themselves as far as EGR is concerned, exactly when EGR is on/off should be tested individually. Only you want the alternator on during high load, not low, if you are doing it for fuel economy. The reason is that the IC engine is more efficient at higher load, so you will use slightly less fuel to produce the same amount of electricity.
Of course, if you are seeking more power, then it should be as you proposed.

What kind of light did you hook up to the EGR? Any idea as to the current there? I may try this to check when my EGR is on/off.
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[Old] Piwoslaw's Peugeot 307sw modding thread
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