Actual Rotary Displacement Request

Barry Bordes · 06-15-2011, 07:54 AM

From Webster’s New Collegiate Dictionary… displacement\ c: the volume displaced by a piston (as in a pump or engine) in a single stroke; also: the total displaced by all the pistons in an internal combustion engine.

The key phrase being “ in a single stroke”.

Notice that using the dictionary definition of displacement with your “personal convention of a full cycle” to determine displacement of a 4-stroke... the 720º required for the full cycle would incorrectly doubled its displacement.

Barry

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06-15-2011, 07:54 AM	#27
Barry Bordes Rotary Fanatic Join Date: Feb 2008 Location: Slidell, LA Posts: 191 Rep Power: 18	From Webster’s New Collegiate Dictionary… displacement\ c: the volume displaced by a piston (as in a pump or engine) in a single stroke; also: the total displaced by all the pistons in an internal combustion engine. The key phrase being “ in a single stroke”. Notice that using the dictionary definition of displacement with your “personal convention of a full cycle” to determine displacement of a 4-stroke... the 720º required for the full cycle would incorrectly doubled its displacement. Barry