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echo: oldtruck
to: MATTHIAS KNAPPIK
from: TOM WALKER
date: 1996-11-17 08:53:00
subject: ? two stroke diesel

-> Tach zusammen,
-> in this discussion we taked about a diesel engine as two stroke.
->
-> there are sucht engines!
-> i asked the cummins company but they never built two stroke diesel.
-> but they told me, that detroit diesel builts such engines.
  That is correct. The Detroit 2 Stroke Diesels were Quite popular. I was 
involved with the Larger ones, 258 and UP Cubic Inches PER cylinder in both 
V-12 and V-16 configurations. This was in the 50's on a WWII submarine. The 
GM engines had intake ports like a regular 2 stroke engine but had a Cam and 
Valves for the Exhaust.
-> i could use drawings, pictures, tec.descriptions.
-> i would even download such stuff from overseas.
 The best place is to go to a Library and check some books on Diesel engines.
-> there are engines with and without valves. how do two-stroker work
-> with valves? how do they work at all?
  The Valveless engines I was around also didn't have a Cylinder Head. How is 
that fro you? It was the Opposed Piston Fairbanks Morrse engine. Had Two 
crankshafts. One upper and one lower and the Pistons met in the center. No 
Physical contact of course just sufficient clearance for the desired 
Compression ratio. It was a port only engine. All two stroke Desiels I have 
been around also required a Supercharger. The Roots type was to most common 
although I saw a French Two Stroke Diesel over in a power plant in Vietnam 
that had a centrifugal blower. It had an electric motor on the shaft for 
starting powered by a small auxurilary generator. 
--- InterEcho 1.19
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* Origin: Node (1:202/815)

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