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> Megasquirt V3 ?, Just a few questions for the MS crowd
alpha434
post Mar 14 2006, 12:50 PM
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Does it support direct port injection yet?

That's the first one on my list.
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jsteele22
post Mar 15 2006, 03:56 PM
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Wow, I hadn't heard of ion-sensing before. my first google hit was a pretty good read :
Ion Sensing Description

One thing I've thought about from time to time is using a fine-toothed crank sensor (360 teeth, say) and using the angular acceleration of the crankshaft after each spark to measure output power on a cyclinder-by-cylinder, spark-by-spark basis. This would be way to much work for a 16-bit MCU, but very accesible to an FPGA, which could do lots of calculation in parallel. At the very least, this could auto-fine-tune the relative amount of fuel to each cylinder, but could even do something like the "peak power position" determination mentioned in the reference above. And I do think I read that Ultra-MS is gonna have an FPGA on board.

If only replacement engines were cheaper !
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