Originally Posted by Pikey Dave
'scuse me if I'm being thick, but it never occurred to me that you could have a 2 stroke diesel, dunno why, just never thought about it. I'm assuming that it's just the "top end" that's 2 stroke & the bottom end, crank, bearings etc will be conventionally oiled.
Its not a new idea, the most novel incarnation was used by the germans as an aero engine during WW2.
It was a 6 cylinder, 12 piston supercharged 2 stroke diesel.
There is a better description here Junkers Jumo 205
The same type of engine was used in the UK for commercial road vehicles by Tillings Stevens, known as the TS3.
There is a whole host of pictures and schematics here, Commer TS3 & Two Stroke Diesels
, this is also good TS3 again
It was also used by the british army in an armoured troop carrier, can't remember the name.
And finally, this is worth a look Napier Deltic
, too complicated to explain. (Click on the image to see it work)