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Lehanover@aol.com wrote:
It seems to me to be the next step in evolution. But it may be that it is for economy rather than power, and not worth it for aircraft but required for a car engine.
I've been trying to clean my inbox, and remembered that I had meant to respond to this earlier, but I'd like to hear your opinion, Lynn.
Economy in the airplane is good for either increasing range or decreasing the amount of fuel to be carried, but I think the biggest gain would be in simplifying the exhaust system. If you could somehow arrange it so that most of the fuel in the F/A mixture is concentrated to the center of the combustion chamber, there wouldn't be that unburnt fuel ready to ignite as soon as it is spit into the exhaust headers. You'd drop both the heat and the power of that super-sonic pulse that kills any flat exhaust surface.
Would this be possible with the following two modifications:
1) Move the manifold mounted injectors to the oil injection ports.
2) Timing the injection pulse so that the spray is centered on the passing chamber. Basically, your hitting a moving (however predictably) target.
The MegaSquirt can time the injection based off of the ignition timing. I'm having some issues with my manifold. The way I built it is causing fuel to puddle in the bottom (so, you live, learn and rebuild). I can probably move the two fuel injectors to the oil injection ports easier than I can build a new manifold. The other two injectors are at the stock position in the center plate. Then I would tune the fuel injector timing to minimize EGT.
Am I fooling myself? And, if so, how?
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