John-Del wrote:

> I have been told that the original (maybe military version) H1 could
> burn any kind of fuel available, including gasoline.

This required a multi fuel engine. To avoid tendency to knock and advanced
ignition they work in sequence first with a mixture formation and then with
a diesel like fuel injection.
This demands of some special parameters. A high compression rate of 25:1,
lubrication of fuel injection pump with an annular lubrication channel
supplied from the engine lubrication circuit. In some cases an externally
supplied ignition with spark plugs, etc.

Regards,

Ralf
--
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deren noch inne-wohnende Energie bis dahin vergeudet wurde ..."