Re:U.S. to release oil from reserves in coordination with ot...
by derefr on Tuesday November 23, 2021 @10:22PM
(#29326626)
> Many of the bigger vehicles have unnecessarily large engines. However, that's not necessarily true across the board.
"Unnecessarily large engine" sure sounds like something that would have negative consequences, but Cylinder Deactivation (CDA) is a thing. Just like your CPU, your engine doesn't need to spin up every "core" if it's not loaded to 100%. And fewer concurrent explosions per second, means less gas needed to drive all those explosions. A V8 that's only driving 4 of its 8 cylinders in most situations, is likely going to be even less gas-guzzling than a V6 that always has to drive all 6 cylinders. (Well, other than the fact that the V8 has to work slightly harder to move a car that's heavier from the additional engine weight.)
Of course, not all vehicles have CDA. But more and more do.
"Unnecessarily large engine" sure sounds like something that would have negative consequences, but Cylinder Deactivation (CDA) is a thing. Just like your CPU, your engine doesn't need to spin up every "core" if it's not loaded to 100%. And fewer concurrent explosions per second, means less gas needed to drive all those explosions. A V8 that's only driving 4 of its 8 cylinders in most situations, is likely going to be even less gas-guzzling than a V6 that always has to drive all 6 cylinders. (Well, other than the fact that the V8 has to work slightly harder to move a car that's heavier from the additional engine weight.)
Of course, not all vehicles have CDA. But more and more do.
And, relevant to the discussion — as of the 2021 model, the F-150 has CDA. (https://pickuptrucktalk.com/2020/10/2021-ford-f150-5-0l-v8-e...)