wwest Posted October 4, 2007 Share Posted October 4, 2007 The Prius I4 was easily adapted to the Atkinson Cycle since just as one cylinder would be EXHAUSTING a portion of the mixture into the intake manifold the "opposite" cylinder would be beginning an intake strobe and thereby absorb the pressure pulse from the mixture being "exhausted", forced back into the inatke manifold. Obviously the V6 has no such advantage, cylinder intake/exhaust (intake) synchronization, which may be why the Atkinson Cycle is not used on the RXh or HHL. Maxda solved this problem in the Millenia "S" V6 by switching to the Miller Cycle, using an SC to prevent reverse air flow in the throttle intake. Could a "reed" valve or "flapper" valve system such as used in 2-cycle engines be used in the throttle throat of a V6 to overcome this problem..?? Quote Link to comment Share on other sites More sharing options...
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