Quote:
Originally Posted by serialk11r
Those are diesel engines, not the same thing. A spark ignition engine running 1.1 equivalence ratio, max possible compression with minimum possible pumping and volumetric efficiency, and a turbo to recover the very slight amount of blowdown would be more efficient than a diesel at peak load yea. Efficiency depends on application and operating conditions.
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More than anything, it depends on how you drive, and while diesels do operate differently, they are still pumps. The same vehicle with a turbo motor will almost always come with a smaller engine that makes more power and if you stay off the gas, it will do better on gas... those are the facts.
