Paul,

I have been thinking about this since the beginning of this time to climb project.
I can't seem to find a reason that it wouldn't work.
The idea is to start the engine using gasoline in port fuel injection configuration and then once boost is passing 20-30psi to switch over to twin direct diesel injectors. This would be a constant speed application with that speed being the highest bsfc point. Boost could be maintained at 40 to 100 psi. Timing is controlled by the injection and detonation is not part of the equation any longer.
I'm not sure if the housings can handle this type of chamber pressures. Then again people are pushing them to extreme hp.
Once running on diesel the throttle plates would remain wide open with output and rpm strictly controlled by the amount of fuel injected. Super lean cruise compared with gasoline. Heavy load the A/F is similar but diesel is still lighter than gasoline with more BTUs by volume.
Does anyone have a solid reason this would not work?

Cheers,

Kurt Emerson

The reason the diesel is not popular for aircraft use is the fuel savings
advantages decrease at high power levels and the diesel engine generally weighs more.

Engine weight is extremely important in aircraft.

Paul Lamar

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