Hi NG,

The high compression ratios for diesel piston engines cause
detonation using
wide cut jet fuel.

Diesel engines cannot "detonate". The term "detonation" applies to
preignition of part of the charge before ignition or before the
flamefront has reached that portion of the charge. Sometimes if the
flamefront goes supersonic this is also called "detonation". Neither
can happen on a diesel engine, as the charge contains only air and the
fuel burnes as it is injected.

As said before, Diesel engines will burn jetfuel, however the
lubrication properties are much lower so the injection system has to be
designed to live with that. (As a matter of fact, the same thing
applies to Diesel engines for GA aircraft, which are just hitting the
market now, and all of which run on Jetfuel!) Also energy content is
somewhat lower. If designed for it, this can be compensated by
increasing the amount of injected fuel accordingly.

regards,
Friedrich

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