i personally see absolutely no reason that alcohol could not be used in one of these engines in a dual fuel mode
the octane rating of alcohol is sufficiently high that it will not preignite or detonate, however
i would not suggest injecting it through the diesel injector, i would keep that as the pilot fuel source
if you either carburated the alcohol in or setup another injector to admit it into the intake stream it will not destroy the engine.
the power density of a typical listeroid is so low, and the combustion temps are also relatively low, coupled with alcohols ability to refrigerate
i cannot see how you will burn a piston using it.
a loss of power is likely however because the alcohol will displace oxygen in the intake charge, and also the btu content of alcohol is about 1/2 that
of diesel fuel.. so some loss of power will result.
on the up side you should have a very clean burning engine without the need to decarbon i would think.
i would suspect you could replace as much as 75% of the diesel injected and still have an engine that runs reliably, albeit at a lower power level.
some timing changes might be in order to optimize the power, only some testing would show how much change results in how much power is gained.
might not be worth the effort to alter timing, i don't know.
if you admit a gaseous fuel into the intake the engine will try to increase rpm, at which point the govenor will decrease the amount of diesel injected up to
a point at which the engine will not run smoothly
how you regulate the alcohol injection will determine the complexity of the design, changing loads will also increase the complexity of the design.
btw,, welcome aboard.. and ...
you are responsible for your own bandaids, gloves and cutman
sometimes the dialog gets pretty pointed, and we just like brothers in a family, can mix up a fight with the best of them.
thats part of the fun, and even in a fight we all learn a bit, between the rounds.
bob g