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-   -   High RPM's in the heat (https://electricvehicleforums.com/forums/ford-escape-hybrid-26/high-rpms-heat-27161/)

08hybridok 08-26-2011 11:30 AM
High RPM's in the heat
 
Is excessive heat same as excessive cold as far as the ICE goes?

I know in winter, near 0 the engine will 'idle' at ~2200rpm, ie when coasting at speed where it'd normaly drop to ~1500rpm, it stays up.
Now that's it's 110+ every day it seems to be doing the same thing, is it running AC for the batt to keep it cool, and that's why it stays up?

Wish there was a working BTM for the SG for the 08's :(

gpsman1 08-26-2011 12:17 PM
Re: High RPM's in the heat
 
Yes. In my 2005 FEH the idle rpm is as much as 600 rpm higher when I have both the front A/C on Max. and the battery needs cooling at the same time.
While there are two cooling loops with two freon evaporators, there is only one belt driven freon compressor. The compressor cannot compress enough freon for both loops at low rpm.

John

stevedebi 08-26-2011 02:42 PM
Re: High RPM's in the heat
 
Originally Posted by 08hybridok (Post 237366)
Is excessive heat same as excessive cold as far as the ICE goes?

I know in winter, near 0 the engine will 'idle' at ~2200rpm, ie when coasting at speed where it'd normaly drop to ~1500rpm, it stays up.
Now that's it's 110+ every day it seems to be doing the same thing, is it running AC for the batt to keep it cool, and that's why it stays up?

Wish there was a working BTM for the SG for the 08's :(
It is probably coincidence, but mine appears to happen right around 96 degrees exterior temperature. It adds about 500 RPM.

miguel 07-06-2017 08:23 PM
Re: High RPM's in the heat
 
Originally Posted by gpsman1 (Post 237368)
Yes. In my 2005 FEH the idle rpm is as much as 600 rpm higher when I have both the front A/C on Max. and the battery needs cooling at the same time.
While there are two cooling loops with two freon evaporators, there is only one belt driven freon compressor. The compressor cannot compress enough freon for both loops at low rpm.

John
sAME THING HERE WITH MINE AT HIGH TEMPS 96+ ADDS 600 RPM WITH AC ON.

Rex B 07-07-2017 04:59 AM
Re: High RPM's in the heat
 
Originally Posted by 08hybridok (Post 237366)

Wish there was a working BTM for the SG for the 08's :(
TAV - Average Battery Temperature - works in my '08


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