twins are alive and well
congarts
Jul 19, 2006 | 07:11 AM
#54
How do I change this text
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From: Behind the TIG welder
Originally Posted by parish8
yep,2 fuel cells, 2 fuel systems, 2 sets of injectors. it will be completely automatic, as the boost goes past 10psi the race fuel will start to flow out of the 2nd set of injectors and the pump gas fuel will be phased out. it isn't a new idea. it alows you to run cheap gas except when under lots of boost.
Jul 19, 2006 | 05:10 PM
#56
Thread Starter
single digit dreamer
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From: omaha ne
Originally Posted by maddboost
What engine management system are you going to use for the dual fuel system. I think only BS3 supports it.
i run a dry shot but yes you are right when i spray the nitrous i will add fuel thru the "race fuel" injectors.
what is soo great about the duel fuel set up is i will be putting around on 87 octane most of the time but when i floor it the good gas will phase right in. very little good gas will be used so i will be able to afford to buy really good gas like c16. it will truely be 1000+rwhp daily driver(no fuel change required)
Jul 20, 2006 | 12:53 PM
#57
On The Tree
Joined: Jan 2004
Posts: 133
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From: Omaha, NE
Originally Posted by maddboost
What engine management system are you going to use for the dual fuel system. I think only BS3 supports it.
MS and the Rotary guys developed a very cool staged injection setup, a while back. I've used it on the one rotary I've tuned, and it is pretty slick.
Read about it here: http://megasquirt.sourceforge.net/extra/stagedinj.html
Jul 20, 2006 | 04:46 PM
#59
Launching!
Joined: Dec 2005
Posts: 230
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From: San Diego,CA
Originally Posted by BeefTip
Well, at least this stuff isnt getting complicated. 
Jul 20, 2006 | 04:49 PM
#60
On The Tree
Joined: Jan 2004
Posts: 133
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From: Omaha, NE
Originally Posted by AintNoHo
I don't want to highjack the thread but I'm getting a little confused and intrigued by the handing off to the race injectors comment. Is it a supplemental cpu and injector setup like vortech or whipple (see pict below), or 16 injectors and 2 cpu, or 8 injectors and nitrous-like solenoid and fuel jets (without the nitrous) underneath or what? Can you give a brief discription?
Real simple. The megasquirt has TWO separate injector drivers, so you can run eight injectors on one bank and fire them together; then we run eight separate injectors on the secondary bank. The software is set up so you can use boost (or TPS, or other variables) to decide when the secondary fuel kicks in. That secondary fuel has it's own "VE table" so you base it's fuelling off of manifold pressure (engine load) and RPM. So it's not like a piggyback setup, the megasquirt is in full control of both fuels. Tons of guys run it overseas, it's been out for a few years on the MS.
-scott