ecoboost towing mpg.......
#21
Senior Member
thanks for posting this. for some reason, many people dont understand that power isnt free. Many of the eco boost customers are complaining that their milage isnt what is advertised. Part of this isnt their fault as there is no real way for them to know weather they are boosting or not because there is no boost gauge on their trucks. But the bottom line is if you want v8 power from a boosted v6 you will get worse fuel economy than a NA v8. it is a mathematical certainty. it all has to do with volumetric efficiency. it is simple, a twinturbo v6 will not be as fuel efficient as a v8 making the same power. this has been tested and proven by the company for decades.
#22
Originally Posted by klumb15
Wrong. A turbocharger will increase the overall efficiency of a motor. A turbo motor will always be more efficient than a N/A motor assuming the power output is identical.
#23
Senior Member
Ok, you're right. It's easier for an engine to scavenge it's intake air opposed to forcing it down it's throat. Forcing air into a motor increases combustion efficiency, there is no way around it. Do you think the auto companies are putting turbos on motors just for the fun of it? The only time a forced induction motor appears to be less efficient than a NA motor is during situations that cause a massive amount of heat to be generated in the compression of the intake air. In order to combat these high temperatures, a combination of intercooling and additional fuel is needed to keep the motor from melting down. However, the perceived reduction of efficiency isn't due to the turbo, it's due to the safe guards put in place to save the motor.
#24
oh man...you really dont know what u are talking about. do you have any training in engineering or even physics 101 for that matter? do you even know what an intercooler is? look, please dont pass yourself off as someone of knowledge because you really dont know.....i am sorry if my posts are more pointed but i am really tired of people on these threads posting information that is so far from fact is isnt funny. for the record.....turbo engines are designed to give the efficiency of a smaller engine when they are unloaded.......when they are under boost and more power is demanded, all bets are off.......
#25
Senior Member
Pull a 31' 11'6" tall tt weighing in the low to mid 8000lb range. I get about 10.5mpg@ 55mph, 9.5 @ 65, and about 8.7 @ 72. One day the truck netted me about 11.2 on a 40 mile trip on country roads going 55mph.
#26
Any thoughts on this contributing to the towing fuel mileage of the EB?
#27
Back to the original post,he said he had it in Tow Haul.Doesn't that keep the Torque Converter from locking up?And will it shift into overdrive in Tow Haul mode?If no on both maybe that's why he only got 6.6 mpg towing.
Later Mark.
Later Mark.
#28
Senior Member
I am seeing numbers that are more than 10% worse than my V8. My back ground is aircraft and it's very common (and a source of great argument) to use rich mixtures to cool the combustion chamber at high loads. A side effect of this is a large amount carbon coming out of the exhaust. Is it possible that the Eco is dumping fuel at high loads to keep things working cool. ...
Diesel fuel has some fundamental differences vs gasoline, namely, stable combustion at extremely lean a/f ratio's. Gasoline does not maintain stable combustion at a/f ratio's much leaner than stoichiometric, making it impossible to cool the cylinder with excess air.
#30
For all us dumb ***** rednecks out there it takes fuel air and fire to make power. The more power you make the more fuel and air is needed no matter the displacement or configuration, forced or natural.
Efficiency in how it makes it is another story as posted by engineermike.
Efficiency in how it makes it is another story as posted by engineermike.
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swayse (09-27-2012)