Posted by David G on March 26, 2016 at 15:16:24 from (75.167.200.131):
In Reply to: Re: The EFI itch posted by Guido on March 26, 2016 at 12:21:17:
Guido,
The best indicator of cylinder effectiveness is to trend the cylinder pressures, but the cost of doing that is much more than trending EGT. One of the 10,000 HP engines we have worked on for the NG pipeline has high pressure NG injection with cylinder pressure trending. It is really informative, you can see pre ignition, detonation, mixture and ignition timing results right on the screen for each cylinder. That conversion was right at a million bucks, so really out of my budget. The computer trims the injection for each cylinder to balance them.
The siamese manifold adds to the complexity, but that is part of the fun. I just want to be able to inject into each pair at the right time to get them close. I have no idea how far apart they are right now with common injection.
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