Quote:
Originally Posted by MetroMPG
Constant speed is less fuel-efficient than DWL because at a constant speed:
- More fuel is burned ascending.
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Sure, but let say you slow down your constant speed target just a little bit, so the time to destination is the same with either method. Then you will use more on the climb, but use less the rest of the time.
Quote:
Originally Posted by MetroMPG
- While descending, the energy invested in the climb is then "wasted" through increased engine braking.
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If the hill is steep enuf you can coast. If it is not steep enuf to coast you will waste more energy by increasing your speed due to due to aero drag, velocity squared.
Quote:
Originally Posted by MetroMPG
One thing to keep in mind is that while target driving, you are typically exceeding the average (constant) speed by the bottom of the descent while still maintaining the target consumption.
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