Bruce:
So, where does the two stroke diesel engine get the air necessary to
support combustion of the next injection of diesel fuel if not through
the use of a mechanical air pump, usually referred to as a "Blower"

"Del Cecchi" wrote:
Presumably it would get them by using the crankcase as a compressor like
a gas 2stroke does.

Problem with that assumption is, a DD crankcase is designed like a 4
stroke, with an oil bath and filter. A DD crankcase is not connected
in any way to the intake port (not to mention, a DD cylinder has no
exhaust port. it has an exhaust valve, and rocker arms, and pushrods,
and cam, like a 4 stroke). A DD 2 storke design is nothing like the 2
stroke design we're all familiar with for outboards etc.
Its air intake comes directly from outside, not through the crankcase.
And without a blower to push the air in, it won't run.

Rick