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ShinerBock's avatar
ShinerBock
Explorer
Oct 20, 2020

Why diesels are most efficient around 1,800 rpm

Finally got more of an answer to why all diesels are most efficient around 1,800 rpm. In comparison to what I thought, it has more to do with how diesel burns than other things like compression ratio...
Tow Vehicles
4x4ord's avatar
4x4ord
Explorer III
Oct 27, 2020
This is the torque curve for the PACCAR MX 13 that’s Peterbilt uses in their medium duty truck



Looks like PACCAR is unaware of the 1800 rpm fuel saving rule.

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