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Old 02-21-2013, 02:32 PM   #10 (permalink)
3-Wheeler
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Quote:
Originally Posted by 2000neon View Post
...This is the most efficient way to do it, and even in these applications, cutting 2 cylinders from a V8 does not result in 25% more fuel economy, because there are energy losses in the system.
Yes, like piston and ring friction losses and so on.

If you check out engines that have used cylinder cutout, the economy gain probably less than 10%. And this is for a V-8 switching to four cylinders on the highway.

I don't typically follow this closely, because the gains are not as large as lean burn, which I have in the Insight.

The lean burn gain is more like 20% or so.

Jim.
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