Is it recommended to put the 300h into NEUTRAL when coasting?
07-15-13, 10:36 AM
#1
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Is it recommended to put the 300h into NEUTRAL when coasting?
When I drive manual transmissions and sometimes, when I'm driving automatic, I'll put the car into NEUTRAL because it has reduced friction and allows the car to coast further.
Is this FE improving strategy recommended on hybrids?
Is this FE improving strategy recommended on hybrids?
07-15-13, 10:51 AM
#2
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Why in the world would you want to drive around coasting part of the time?
This is ridiculous.
http://www.popularmechanics.com/cars...l-fuel-economy
John
Last edited by txes; 07-15-13 at 11:01 AM.
07-15-13, 11:10 AM
#3
Shift the shift lever to D when driving.
In the N position, the gasoline engine operates but electricity cannot be generated.
The hybrid battery (traction battery) will discharge, requiring unnecessary engine
power to recharge.
and
Shift the shift lever to P when parking.
In the N position, the hybrid battery (traction battery) does not recharge.
Leaving the shift lever in the N position for an extended period of time may discharge
the hybrid battery. The vehicle cannot run if the hybrid battery is discharged
07-15-13, 12:02 PM
#4
Lead Lap
No coasting Neo. Anytime, any car, anywhere.
07-22-13, 09:37 AM
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Coasting? Really?
Why in the world would you want to drive around coasting part of the time?
This is ridiculous.
http://www.popularmechanics.com/cars...l-fuel-economy
John
Why in the world would you want to drive around coasting part of the time?
This is ridiculous.
http://www.popularmechanics.com/cars...l-fuel-economy
John
I think this article is flawed, but not completely wrong. One factor the author doesn't take into account is the deceleration force exerted by the engine when no fuel is being used. Shifting to neutral removes that deceleration, allowing the car to coast much farther while consuming only the fuel required to idle, which is significantly less than what would be required to maintain even the same rpm under load. As to the safety issue, I agree that it's a potential problem, but can be mitigated/managed by an alert driver. Hypermiling techniques can be overdone, to the detriment of safety and road manners....but if practiced sensibly, are just fine. Another question is whether saving $30-40 per month is really worth all the extra effort....
Last edited by Neoxagon; 07-22-13 at 09:46 AM.
07-22-13, 06:28 PM
#6
coasting with a manual trans is fine. -what you don't want to do is use the trans as a brake... brake pads are much cheaper!
but I've never heard that shifting into neutral with a automatic was a good idea.
but I've never heard that shifting into neutral with a automatic was a good idea.
07-23-13, 12:26 PM
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Doesn't thecars ability to use its stability and traction control become limited by switching to neutral? Not to mention the driver response time to an emergency.
Just not sure its worth the FE on any car.
Just not sure its worth the FE on any car.
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07-23-13, 02:57 PM
#9
To further clarify, when you are braking, especially in a long brake zone, like off the interstate, it is normal to shift to neutral, and use the brakes to stop or slow down. Only putting it in gear when you have completed your braking. (coasting in gear is also fine)
Downshifting in a brake zone, is often called transmission braking. (expensive)
Drivers with paddle shift cars and automatic transmissions should brake harder, downshift just before throttle application.
Transmission braking when turning the wheel can spin the car by locking the rear wheels, too. I saw an F430 go off at homestead doing that....
Downshifting in a brake zone, is often called transmission braking. (expensive)
Drivers with paddle shift cars and automatic transmissions should brake harder, downshift just before throttle application.
Transmission braking when turning the wheel can spin the car by locking the rear wheels, too. I saw an F430 go off at homestead doing that....
07-30-13, 08:17 AM
#10
Driver School Candidate
Down Hill
But remember, if you are descending down a mountain you should shift to a lower gear to avoid overheating the brakes. You can cause the brake fluid to boil and loose your bakes from excessive use.
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