Quote:
Originally Posted by vskid3
One question, how do you figure that the Atkinson valve timing makes it 750cc and 6:1 compression? I've never seen any numbers for the effective compression ratio and I just didn't expect it to be so extreme.
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The air/fuel charge is not trapped until the inlet valve closes. When that does occur, the volume of air/fuel trapped is that defined by the remainder of the stroke. Compression likewise does not occur until the inlet valve closes.