RAM EcoDiesel a Flop for Towing

wilber1 wrote:
Where did all that fuel go and what did it do?

It powered the EB up the hill while easily being able to hold the speed limit

Power is force applied over distance and time. I'm supposed to believe that the magic EB can apply more force over a greater distance in less time without incurring more stress. Sounds like snake oil.

I understand it sounds like snake oil to the ignorant, but it doesn't to those that understand. Lets take a look at what each engine is doing at 3,500 rpm which is roughly around where both were at going up the hill.

Based on the VM Motori dyno of the Ecodiesel, it is making about 490 Nm at 3,500 rpm. That converts over to about 360 lb-ft. Now since it is making 360 lb-ft at 3,500 rpm, we can apply the rule of 5252 to know that it is making 233 hp at that engine speed.

The 2.7L EB on the other hand it still at its max torque of 375 lb-ft at 3,500 rpm and again using the rule of 5252 the 2.7L would be at 249 hp at that rpm as well. So we can clearly see that the 2.7L Ecoboost was making more power than the Ecodiesel at that engine speed. However, the big difference is that the Ecoboost had plenty more power on tap if needed while the Ecodiesel was just about its max engine speed and could not give anymore.


Lastly, as I said before, I don't know why you would bring up stress in this scenario as if it is your last ditch effort to cling on to something. A diesel engine in general has a lot more stress on it than a regular N/A engine but does that mean it doesn't last longer? No, because it it is overbuilt to handle such stress. So if the Ecoboost is built like a diesel with a CGI block, has a lower cylinder pressure, has a lower boost pressure, and is able to operate at a much lower rpm than its designed engine speed in comparison to the Ecodiesel then what is your point? The extra fuel used also has nothing to do with the added stress since diesel fuel is more energy dense you do not need as much to make the same power.