Quote:
Originally Posted by JohnnyGrey
OK, now that we're looking at the same image, it's time for you to realize a few things...
1. Highway cruise is done in a narrow window between 2000-2500 rpm on the X axis and between 0-40 BMEP on the Y axis. In this region, the maps are EXACTLY THE SAME between the two motors.
2. 0.42 BSFC can be accomplished with either engine DURING ACCELERATION OR HILL CLIMB ONLY by putting your foot 80% to the floor and shifting at 2400 RPM. The turbo engine will simply allow you to accelerate faster, but will use no less fuel per unit of power produced.
Now, Duffman, for the third time, please go on and explain to us with your own map as an example, why P&G is more efficient than single speed cruising.
John, if you're wondering why I'm getting ticked, it's because someone who doesn't understand what torque is, is trying to school me on BSFC maps, insisting that an entire axis of the map is irrelevent! Ironically, he claims the Y axis doesn't matter, but a turbocharger stretching the regions along the Y axis does matter. Go figure! Guess what buddy, torque decides if you're getting 0.42 or 1.7 FC @ 2K RPM!!!
|
Now that you know the diagram we are discussing, I suggest you go back to post 60 and reread all the posts since because I am not going to rewrite my argument a second time. Rude or not, it is still obvious you are not paying attention. Nowhere have I even mentioned P&G. When I say hilly areas, think someone in San Francisco or a Colorado resident as this should clarify the point I am trying to make.
It is also apparent that you having trouble with BMEP, here is a link to help you:
http://en.wikipedia.org/wiki/BMEP
What this means is that the 40 on the BMEP axis does not translate into the same torque in a 1L metro as it does in a 6.8L Ford V10. Additionally the power requirements to push a metro down the road are vastly different than a F450 with a GCWR of 20,000 lbs. So again without any additional information the numbers on the BMEP axis provide nothing more than to lay a scale down (ie 10 is twice a big as 5), thus it is effectively unit less. Like many discussions on this board, this is purely theoretical.
I know that I am not right 100% of the time or on 100% of subjects. What I don’t appreciate is someone telling me that I don’t know what I am talking about when they have no clue what my background is. I’m done with your pissing match, I am tagging out, and maybe someone else will pick up and continue to pointlessly argue with you.