David,
The Wilksch diesel is a turbocharged 2 stroke. I think the version
in the Europa was an in-line 3 cylinder 100HP water - cooled
inverted unit with pressure - fed wet sump in=A0the cam cover. It
certainly looked a neat installation - the size and orientation
lending itself to a sleek cowl design (prototype courtesy Graham
Singleton's "G Flight" ). I think air is blown into the cylinder
via inlet valves - which close before the compression stroke. The
fuel (which can be avtur) is injected and the combustion stroke
drives the piston down to where the exhaust ports are in the
cylinder. The exhaust exits the cylinder and energises the turbo
which injects a fresh charge of air and so on.
The units are still under development and I don't think the design
has been finalised. It is at least 20Lb heavier than a Rotax 912 -
but then the Rotax doesn't burn Avtur!
Roger Mills
G-BVUV
The scavenging charge of air is blown in through ports in the side
of the cylinder , then compressed by the piston and fuel injected
at the apropriate moment. Ignition occurs , by heat of compression
then the piston descends (actually ascends) the inlet ports are
uncovered , also the 2 or 3 valves in the head open to allow
exhaust. Power is designed 120 HP.
It is intended to develop both 4 and 5 cylinder versions.
Graham
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