Re: How to accelerate at the lights



Ed Pirrero wrote: <brevity snip>
gpsman wrote:

Surely you've noticed that your fuel mileage suffers when you do more
stop & go driving as opposed to highway driving. What do you think
causes that?

Time spent at 0mpg (stopped, idling.) Also, lots of cycles of brake
use.

1. Drive gently! Reduce your breaking and quick acceleration. Cars use
the least amount of gas when they maintain a reasonable speed. Use
cruise control whenever possible. Also, driving at slower speeds saves
gas, which is all the more reason to do so.
http://www.suite101.com/article.cfm/7518/42023
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-> TIP- Slow down

Because wind resistance increases dramatically with speed, every mile
that you drive at a speed over 55 MPH, your fuel economy actually goes
down by two percent. In other words, you'll get about half the mileage
driving at 70 MPH compared to 50 MPH! That's why aerodynamics has
become so important in the last 15 years, and why all of our cars now
look like jelly beans.

Here's another rule of thumb, from the EPA: Every 5 MPH you drive over
60 MPH you're paying an additional $0.21 per gallon for gas.

So slow down. You'll be a safer, more relaxed driver, and you'll
increase your fuel efficiency. And, believe it or not, due to an
unexplained Einsteinian time warp, you'll also get to your destination
in about the same time.
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Getting into the highest gear you can, at the lowest possible speed,
will save you plenty of gas.

Why? Because you use less gas when the engine is turning slowly. The
slower the engine turns, the fewer the number of explosions in the
cylinders. And fewer explosions means less gas consumed.

So, if you drive a manual transmission car, shift sooner. As long as
the engine doesn't buck, shutter, or ping, you're fine. You'll
sacrifice the ability to accelerate quickly - but you can always
downshift if you need to accelerate.
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Every time you step on your car's brakes, you're wasting gas.

Why is that? Simple. Every time you use the brakes, you're wasting the
"acceleration" you've already used. Instead of moving your car, that
energy is being transformed into steaming hot brake pads.

How do you use the brakes less? Anticipate. If you're at a stoplight,
don't speed away when there's a good chance you'll have to stop again
soon. Accelerate slowly, and then coast to the next light. If you see a
need to stop up ahead, coast. Don't continue to accelerate and then
brake at the last minute. If you anticipate your stops, you'll cut down
on your wasteful acceleration, and save lots of fuel.
http://www.cartalk.com/content/features/fueleconomy/
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- gpsman

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