Forum Discussion
rjstractor
May 01, 2022Nomad
Bionic Man wrote:rjstractor wrote:Bionic Man wrote:
How would it not burn more fuel when it has twice the displacement?
When I mentioned "naturally aspirated engines in pickups", I was referring to the V8s used in HD pickups produced by Ford, Stellantis and GM. Those engines are all roughly the same size as the 6.7L B-series Cummins, not twice the displacement. A modern engine's fuel usage is based more on power output, not displacement, especially under high loading. We'll have to wait and see what the specs end up being on these new engines. If they are less fuel efficient than the current gas pickup engines they will fail.
That still doesn’t make sense to me. Adding a turbo effectively increases displacement. When the turbo is spooling it would absolutely use more fuel than a NA similarly sized engine.
I guess the Cummins engineers will have to sort that out if they want this engine to succeed. ;)
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