Quote:
Originally Posted by autoteach
It is the bore/stroke ratio that is important. A recent discussion on these matters had a link that I posted talking about the expansion ratio of a higher compression ration, which is similar to a low bore/stroke ratio.
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Yes. The bore/stroke ratio is important. But for the comparison of a 2.0l engine, one with 4 cylinders and one with 12 cylinders it is necessary to use the same bore/stroke ratio in order to compare the engines. I have choosen a bore/stroke ratio of 1.0 but could of picked any sensible ratio. The result would be the same for a 2.0l engine running at 1200 revs/min.
1/ 12 cylinder engine has less torque than the 4 cylinder engine.
2/ 12 cylinder engine has poorer fuel consumption than a 4 cylinder engine.