Hi Bill,

I have to say that I was exceptionally disappointed when I learned that the Atkinson-Cycle engines used by both Toyota and Ford (Escape Hybrid) were not true Atkinson-Cycle in that they still have 4 distinct cycles and it takes two full revolutions of the crankshaft to complete one power cycle.
The True Atkinson Cycle engine takes 1 full revolution to accomplish all 4 strokes via it's linkage and intermediate shaft (a marvelous design).

The Engines we are dealing with here are (for all intents and purposes) standard Otto Cycle 4 stroke engines that have a special valve timing mechanism (VVT). I truly have no idea at this point how either Toyota or Ford can claim Atkinson-Cycle engine..

Atkinson:


Otto:

Regards - Randy




If there's one thing I've learned in online forums its this:
Never argue with an idiot, they'll drag you down to their level and beat you with experience!