Diesel engine power
Is a 300hp diesel sufficient for a 36/37 foot motor home? Will a 300hp lug down on hills?
Forum Discussion
bluwtr49 wrote:
Regarding the "lugging down", Cat recommends that a diesel be allowed to "lug" for the best efficiency. I think they define lugging as letting it the rpm drop to the peak torque speed and only downshift if that rpm can not be maintained. To do this with the Allison I just keep it in the Mode setting and the performance is amazing.
However, a caveat is on extended grades running at peak torque the engine RPM is too low for maximum cooling so a downshift is necessary if coolant temp becomes excessive.
In other words, don't worry about "lugging" it.
Yep!
Cummins, for example, defines lugging as the application of full throttle below torque peak.
OP, the answer is a definite maybe. We need more info as to the vehicle and towing to compare it to the real world.
Enough being a relative term directly related to the size of your wallet.
