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Old 06-29-2013, 11:07 PM   #13 (permalink)
NachtRitter
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Quote:
Originally Posted by Old Mechanic View Post
Piston in cylinder without reciprocation. The big end of the connecting rod rotates around the fixed crank journal. Combustion pressure pushes the cylinder head away from the piston, just the opposite of a reciprocating engine.

Now reverse the pistons and have them backwards of the illustration. No connecting rods, both pistons and cylinders oscillate relative to the crank journal as they rotate around the different eccentrics.

Piston in cylinder compression ignition without reciprocation. The engine block is the flywheel.

Animated Engines - Gnome Rotary

regards
Mech
I'd remembered (after seeing the animation you posted) how the early airplanes had the entire engine rotating around the fixed pistons, though I can't picture something like that in a passenger vehicle.
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