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Ford Escape Hybrid - Driving Tips & Tricks
46 messages, Last post on Apr 13, 2011 at 8:32 PM
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What is this discussion about? Ford Escape Hybrid, Fuel Efficiency (MPG), SUV
#45 of 46 Re: New 2011 FEH question [midlorapid] by chuck1ch
Apr 13, 2011 (8:21 pm)
Replying to: midlorapid (Mar 28, 2011 8:39 am)
I have a 2009 FEH. I tried what you have done going to N downhill and noted the engine fires up above 40 mph. I read somewhere that the engine fires up to minimize the stress on the CVT. So in N, you are using gas to run the engine which is idling. Now if you were coasting in D downhill with the foot off the gas, I believe the engine will go to a fuel shutoff mode and freewheel being driven by the CVT. Somewhere this is big right up in one of the forums that explain how the powertrain works.
Personally, leave in D and use a light foot.
- stevedebi (Apr 13, 2011 8:32 pm)
Replies to this message:
#46 of 46 Re: New 2011 FEH question [chuck1ch] by stevedebi
Apr 13, 2011 (8:32 pm)
Replying to: chuck1ch (Apr 13, 2011 8:21 pm)
"I have a 2009 FEH. I tried what you have done going to N downhill and noted the engine fires up above 40 mph. I read somewhere that the engine fires up to minimize the stress on the CVT. So in N, you are using gas to run the engine which is idling. Now if you were coasting in D downhill with the foot off the gas, I believe the engine will go to a fuel shutoff mode and freewheel being driven by the CVT. Somewhere this is big right up in one of the forums that explain how the powertrain works.
Personally, leave in D and use a light foot. "
No, the engine SPINS up, it does not use gas in this mode. It spins up so that the CVT will not have stress should the drivetrain revert to using gas/electric propulsion. It will also spin up even higher should the battery state of charge (SOC) goes above approximately 66 percent.
In Neutral, the transmission and engine are not connected. I don't recommend this in general, although I have read that some hypermilers use Neutral.
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