Two Stroke Diesel

[evetsmd]

Found this to be incredible....wonder what an oil change costs?
How big do you think the oil filter might be?
What kind of battery starts the puppy or better yet maybe it needs an explosion to get started>

 

[jeffnick]

Amazing.

I assume this is done so the the sideways forces produced by the connecting rod are absorbed by the crosshead and not by the piston. Those sideways forces are what makes the cylinders in an auto engine get oval-shaped over
time.

-OR-

a conventional connecting rod wouldn't clear the bore with a stroke that large?

 

[MaxOut]

Sweet engine. 102 RPMs thats less than 2 revs per second...Over 5.6 million pounds of torque! 50% thermal efficiency very impressive.

Probably start with huge electric motor driven by ships generator.

 

[jeffnick]

We saw a micro-mini version of this type motor in a trawler. It was direct drive to the prop and was started by compressed air - ran 200 rpm and had recently made a transatlantic crossing. For reverse, you shut it down and started it in the other direction. It was lubed by an open loop system...the oil only ran thru the motor once, it was then fed into the diesel tank. I guess you don't need a volume of oil for a motor that is hardly turning? There was a timing lever used to manually 'tune' the motor on the run, depending on the rpm.