posted on Aug, 16 2008 @ 01:12 PM
Originally posted by TheHunted
reply to post by cautiouslypessimistic
I'm calling this one a hoax or that you are from a different unvierse with different laws of physics. The higher the Revolutions Per Minute means how
fast your engine is turning. The faster the turn then the more energy required. In this case the energy being used is fuel.
Then there is the resistance of air. The faster you move the more air resistance there is. No matter the size of your vehicle or engine you cannot
escape that. The force of this restance slows your vehicle down, so to maintain speed your engine requires more energy. Once again the energy used is
[edit on 15-8-2008 by TheHunted]
You can not believe me all you want, but until you either do the research or test it yourself, you will not understand that you are wrong.
Yes at higher rpm you use more fuel, but you are also covering an exponentially increased amount of distance. Therefore, until you pass the point of
peak efficiency(which is different for every car), you gain mileage by increasing speed.
Now, you cant figure this all out by a simple math equation. Really the only way to do it is on a graph, with a line for fuel used and a line for
distance traveled. When those lines converge, that is your peak efficiency. And in an efficient car, that will be at higher speeds. Now, driving in
stop and go traffic changes things dramatically, so keep in mind I am only speaking of constant speed freeway travel.
Also, say you travel 30 miles at a constant 90 mph and then make another trip of 200 miles at a constant 90 mph. You will get noticably better mileage
on the second trip, because you have a greater amount of distance to make up for the disporportionate amount of fuel used to accelerate to 90 mph.
Now, obviously there are infinate factors that will affect the exact numbers, from maintanance to tire inflation to quality of gas, but as a whole,
you will see an increase in mileage.
I dont expect you to understand this. But it is the truth.