In article , John Williamson johnwilli
scribeth thus
Doctor Drivel wrote:

"Dave Plowman (News)" wrote in message
...
In article ,
John Williamson wrote:

It's not possible to make a two stroke meet emissions regs in
practice.
Their fuel consumption is also poor. This is why they're only used for
purposes where their low production costs outweigh this. In countries
where it doesn't matter.

Almost all large diesels as used in ships are two stroke. They also have
the highest fuel efficiencies of all internal combustion engines,
currently over 50%. Two stroke engines scale up better than four stroke
engines.

Large diesels used for this sort of application aren't comparable to what
is suitable for road use.

There are two-stroke diseel trucks. The Commer TS-3 was two-stroke.

Abandoned by the makers half a century ago as too complex, too expensive
to produce and too inefficient. Next...


Napier Deltic anyone .. Two stroke IIRC;?...
--
Tony Sayer