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Looks like Cummins is making a new engine.


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#1 Torque Monkey

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Posted 12 October 2017 - 09:22 AM

Of course it's for the military and 2-stroke so the EPA isn't going to like it for normal people.

http://www.foxnews.c...r-u-s-army.html

My Brother sent this to me. Looks like a mini submarine engine from WW2.


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#2 stroketeck

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Posted 12 October 2017 - 10:50 AM

very cool



#3 GTroyer

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Posted 12 October 2017 - 10:52 AM

interesting , wonder how the sound levels will be  if it will reach Detroit levels  :(

 

IMHO nothing worse than a Detroit 8 or 12 V be it 53,72,93 all bad IMHO



#4 Bob V

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Posted 12 October 2017 - 10:54 AM

Very interesting, didn't see it in the vedio, but I would think it would need a roots style Supercharger.
It will also be interesting to see how the get the right amount of fuel in the right places.
How would they keep oil form pooling on the crank side of the top pistons?

#5 Woodenhead

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Posted 12 October 2017 - 10:56 AM

Super cool!  I once got a personal tour the Cummins R&D facility from one of their R&D engineers and saw the test cells, prototyping shop and labs.  It's nothing short of amazing what goes into developing an engine and how many iterations they go through before they get what they want. 


Edited by Woodenhead, 12 October 2017 - 10:56 AM.


#6 Torque Monkey

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Posted 12 October 2017 - 11:21 AM

One very interesting thing to think about with this design is the energy that is usually put into lifting a cylinder head on a regular engine is put directly into the crankshaft. also since energy is not being put into the firing deck of a cylinder head but instead to the piston on both sides, cooling is diminished considerably as the energy is converted to shaft power instead of heat. There are no valves, no mechanical parasitic loss other than the supercharger and crankshaft/gear train. With common rail technology and multiple points of injection the potential of this platform on efficiency will be amazing. The only thing missing is a turbo charger to bypass the super charger at higher loads.

 

The super charger has to be used due to it being a 2 stroke .It needs positive air pressure in the scavenging air box to keep combustion gas moving in the right direction during start up.

 

The really funny part is, this engine can be started in either direction and probably not know the difference.

 

It is going to be a very impressive platform...



#7 Diesel Freak

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Posted 12 October 2017 - 04:30 PM

Cool. A small version if the 10 cyl 20 piston Fairbanks we had as emergency diesel generators on the boat.




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