by litesong » Sun 23 Oct 2016, 12:19:31
Blast from the Past on how to reduce fuel consumption while ascending & descending hills. Other posts about neglected fuel reduction tips would be appreciated:
$this->bbcode_second_pass_quote('litesong', 'O')h, yeah. Here's tips to get better MPG (on hills). When approaching hills or mountain slopes (lots of them in my Washington state), slowly ease your velocity a bit faster than your normal pace, BEFORE the hill starts rising. As you begin to ascend, carefully don't lose speed at the bottom of the hill (but don't accelerate either). As you approach the steepest part of the hill, carefully & slowly decrease your speed, till you ascend to the very flat top of the hill & are going a bit slower than your usual pace. With the varying slope of the hill, my instructions can be difficult to master, but keep trying. Once you are on the flat top of the hill, slowly bring your speed back up to your normal pace. This method is called flattening out the hill. Tho you lose MPG as you accelerate above your usual pace before you begin ascending the hill, you decrease fuel consumption a lot, as you lose a bit of speed in the steepest part of the hill.
If the hill descends immediately after you obtain the flat of the hilltop, DON'T immediately accelerate to your normal pace. But as you begin descending & best if you wait till the steepest part of the descent, let the hill give back your speed till you are at your usual pace. Basically, you are trading your kinetic energy BEFORE the bottom of the hill, for the hill's potential energy (due to its altitude), while extracting the least amount of fuel energy out of your gas tank, through the drive system of your car.