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post #21 of 22 Old 04-09-2010
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Originally Posted by Omatako View Post

You've got distance and time to factor into the equation.
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post #22 of 22 Old 04-11-2010
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Originally Posted by lancelot9898 View Post
You've got distance and time to factor into the equation.
Are you saying that you are trying to balance fuel consumption versus your own time? I find the easiest graphs to read the ones that compare fuel consumption/power versus rpm. On most diesel engines, this will occur near the torque peak. This can be manipulated a little through things like timing but not much. At high rpms (which I would consider 80% to be), you are putting a lot of energy into simply spinning the engine which is also not running as efficiently. 80% is perfectly acceptable if you want to get somewhere relatively quickly but it is not going to yield optimal fuel economy.
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