Better hybrid performance in really hot weather-

[HeyBales]

Just curious, how often do YOU deal with temperature over 110 degrees???

Since that or higher is only in the cabin after sitting in the sun, AC on.
But I'm pretty sure I'd use the AC if it was 110 outside too!

There have been several threads thru the 2 prior summers discussing charging process and at what temp that seems to be where the system protects itself.

Since at those temps max AC is likely to be on anyway, any side benefit to the battery and getting a tad more use out of it would actually help MPG.

Of course I could see initially the ICE needing to run to provide electric to the AC thru DCDC, at least until the battery benefits from it AC running.

I'm sure it's still a net loss to MPG no matter what.
I'd sure hate to think the system is keeping grill fins closed for aerodynamics on days like that unless the AC is running full bore!

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[HeyBales]

I don't know how hybrids work but in an ice vehicle, when you enter a hot car you put the a/c on regular, not max. That draws in fresh air that's not as hot as the inside air. Once the cabin cools down you switch to max which recirculate the cold air and stops the hot outside air from entering.

Maybe a hybrid is different.

Ya - auto-AC does recirc from the start - in the manual they tell you to open windows to cool it down until you feel cool air.

 

[Glen Baker LLC]

Temperature set on auto 70 to 72°
My mpg seems to have dropped during the summer. 32-36 mpg and having to work at 36 mpg
During the winter and early spring I was getting 37-42 mpg easily.
Regardless my experience is still anecdotal just as the OP. Scientifically proven facts. Just personal experiences.

 

[Vaportrail]

Well, you use up the battery on running the AC now there is less to provide propulsion

Unless it's over 110 degrees, then the AC can help the high voltage battery capacity...

Just to be clear, I'm talking about driving through the desert, with AMBIENT temperature above 110-

I don't want to argue about it with a person who's never even been in 110 degree weather...

I've got 40k trouble free, desert driving miles on my maverick. And, my mpg has improved drastically after learning how to drive when it's really hot...

 

[huunvubu]

HUH-

I thought our hybrid air-conditioning ran off the battery???

Shouldn't impact MPG like running an ICE AC...

Running the AC takes energy.

In an ICE only vehicle that comes from the gas engine turning the compressor.

In the Ford Maverick Hybrid that comes from the HV Battery.

In this case the energy in the HV battery is finite and when it gets too low the ICE engine runs to recharge the HV battery.

You can see this happening by just having the Maverick parked with the AC running. The AC will run cold using the HV battery but the ICE engine will turn on when the HV battery needs recharging.

This reduces MPG.

 

[AVC]

A little info on the hybrid use of the A/C compressor for HV battery cooling

https://www.mavericktruckclub.com/forum/threads/a-c-on-even-when-the-led-is-off.51505/post-904684

 

[HeyBales]

Unless it's over 110 degrees, then the AC can help the high voltage battery capacity...

Just to be clear, I'm talking about driving through the desert, with AMBIENT temperature above 110-

I don't want to argue about it with a person who's never even been in 110 degree weather...

I've got 40k trouble free, desert driving miles on my maverick. And, my mpg has improved drastically after learning how to drive when it's really hot...

Huh - I wasn't arguing.

You expressed a view wondering how AC usage would impact the battery.
I explained how. Along with others.
Not arguing, just educating since that specific fact didn't seem to be known before.

Did you read what I wrote? - even theorized how it's possible you are getting better than what would be expected.

You might be surprised how much knowledge you've taken in thru the years from people that didn't actually experience whatever they were passing on. (at least I hope you haven't rejected that knowledge, leads one down the path to be a flat earther!)

 

[Vaportrail]

Huh - I wasn't arguing.
(at least I hope you haven't rejected that knowledge, leads one down the path to be a flat earther!)

LOL

Hey-

If you EVER find yourself driving across town in 120 degree weather, feel free to turn off your air conditioner and check your mpg...

Or try running it like I suggested and see for yourself???

But for the record, I wouldn't mind if you just scroll on by, and keep your vast knowledge out of my thread!!!

 

[wax87]

What does the MAX AC do anyway? You can hit the MAX AC, and of course it turns the FAN on high. You can then turn the fan down and the MAX AC button is still illuminated. Does it do anything more than just turn the AC fan on high?

 

[Master Blaster]

I don't know how hybrids work but in an ice vehicle, when you enter a hot car you put the a/c on regular, not max. That draws in fresh air that's not as hot as the inside air. Once the cabin cools down you switch to max which recirculate the cold air and stops the hot outside air from entering.

Maybe a hybrid is different.

The AC works exactly the same in both drivetrain variants, with the exception that the compressor is run by the engine in the EB model and a 400V electric motor in the hybrid in order to provide cooling when the ICE is not running.

 

[wax87]

The AC works exactly the same in both drivetrain variants, with the exception that the compressor is run by the engine in the EB model and a 400V electric motor in the hybrid in order to provide cooling when the ICE is not running.

what voltage does the compressor run with?

 

[Master Blaster]

what voltage does the compressor run with?

400V

 

[NC_Pinz]

I started driving my hybrid maverick in June 2023-

We had 55 days over 110 degrees. I pretty much gave up on getting any electric sailing...

This summer, we set a record with 60 days over 110.

I discovered that running the ac on max coldest setting fan full blast with vents barely cracked helps electric driving on accident. Wife complaining about burning up in the back seat...

I'm not an engineer, just sharing my personal experience...

Why do you crack the vents and not open them fully to allow good airflow across the evaporator and into the cabin? You're artificially reducing the capacity of the A/C system; granted it would reduce the power drawn by the compressor but you aren't adequately conditioning the space.

Seems odd.

 

[AVC]

The HV battery is nominally 230V or so according to OBD PID's while driving. An OBD error is set if the battery voltage exceeds 258V, as the DC-DC and DC/3-Phase converters apparently don't like it higher than that. The service manual variously states "about 400V" and in other section "about 300V".

 

[MakinDoForNow]

I don't doubt you but I am still trying to figure out how the two cooling systems - ICE engine and hybrid battery - benefit from this. Does the hybrid system stay on longer or at a higher pump volume? Dunno and still scratching my head.

On max heat or max cool temp setting the ice runs constantly. Due electrical draw on hybrid. If you want ice possibly cycling on/off do not select max or highest or lowest temp setting.per manual. Max cool will get cabin to below 60°F as fast as it can flat out. Max heat will heat cabin to "Hi" above 85°F using ice coolant loop plus the auxiliary electric ceramic heater with max current. Do not know actual limits!!

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