Monitoring Hybrid Battery State-Of-Charge

[GPSMan]

Not very hot. 145 to 165. But I get it up to full operating temperature at least once a week.

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[Sliphorn]

Not very hot. 145 to 165. But I get it up to full operating temperature at least once a week.

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It is good that you get the oil up to full operating temp at least once a week. But I wonder if the accumulated moisture between those full op runs is a detriment to ICE longevity? I know it would bug me. How often do you give it the beans and really let her rip?
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[GPSMan]

Well, driving gently at first I was at 10,000+ for the computed Oil Change Interval. Then I towed over the mountains for a couple of tanks back in October and OCI is now set to run for 9000 miles (total). So 1000 miles drive took 2000 miles off the oil, so the "smart" meter knows I did towing or ran at higher RPM's. I wonder if the OCI counts total RPM's? Like change your oil every 20,000,000 revs. With lots of EV miles, you'll get longer OCI.

 

[GPSMan]

No I see the point. Avoidance might be achievable in Michigan but I don't know how San Francisco guy avoids other drivers while in San Francisco.

What are you talking about???

Avoiding other drivers?!! Around San Francisco?!! It's super congested! I'm bumper to bumper 95% of the time!

Slower you go, the higher your MPG!
Tonight, longer trip, super high MPG:

 

[SuperDave71]

GPSMan,
What are the codes you use for traction battery temp?

 

[DesertSweat]

I have 5400 miles now, mpg showing 52.8 . Worst tank full was 39.9 so far , cold weather and some interstate.

I've found the truck overestimates by 10%. Use fuelly to get real averages.

 

[Uncle Ed]

I've found the truck overestimates by 10%. Use fuelly to get real averages.

The 39.9 mpg was figured by hand, I found each h tank full was over estimated by about 2 mpg by computer, so probably subtract 2 mpg from the 52.9 to be closer to actual.

 

[SuperDave71]

The truck overestimates, but you can use your hand calculated data to calibrate it in engineering mode and make it correct.

 

[Uncle Ed]

The truck overestimates, but you can use your hand calculated data to calibrate it in engineering mode and make it correct.

What is this engineering mode you speak of?

 

[jsus]

What is this engineering mode you speak of?

https://www.mavericktruckclub.com/f...rick-engineering-test-mode-how-to-enter.5672/

Scroll through and find something like AFE Bias. Lower that value based on how far off yours tends to be, based on calculating miles driven over gallons refueled at the pump, vs. what the computer thinks your mpg is.

 

[Uncle Ed]

https://www.mavericktruckclub.com/f...rick-engineering-test-mode-how-to-enter.5672/

Scroll through and find something like AFE Bias. Lower that value based on how far off yours tends to be, based on calculating miles driven over gallons refueled at the pump, vs. what the computer thinks your mpg is.

Thank you very much.

 

[SuperDave71]

Thanks for sharing the link jsus. I added up fuel used over 10 or so cycles, always using the same pump, and calculated fuel used utilizing the trucks indicated mpg. I divided Maverick gallons by Gas station gallons. For my case I came up with 0.95. The AFE bias is default 1000, I changed it to 0.95 x 1000, or 950.

 

[CuriousGary]

Normal, varied, busy, congested San Francisco and surrounding Bay Area cites, yes. Quite do-able; repeatedly, and several owners have done this. I'm one of several.

Keep in mind "winter" here is 40°F and summer is about 80°F with low humidity. You can get away without heating or air-conditioning, if you choose, which is 10% to 25% of your gasoline use, depending on severity of weather. My home does not even have an air conditioner.

I understand 800 miles per tank in Indiana or Michigan is just short of impossible. YOU should understand 800 miles is not too difficult in mild weather. I don't live where you live.

Don't be so quick to judge.

Knowing battery SOC is an advantage, a significant advantage in stop n go conditions. In steady state, highway over 55 mph; sure, not much advantage then.

Key to higher MPG in any condition is keeping the Battery SOC lower, so there is always room to charge. If you are not driving in EV much, or at all, you are driving around with a "full" battery. A rarely used "full" battery is nearly useless to you. Literally dead weight. (And at steady high speeds it is dead weight much of the time, but is charged and ready to give you that boost on a hill or that boost of acceleration for passing.)

You could call the hybrids "Battery Boosted" compared to EcoBoost.

Keeping the SoC low to maximize mpg’s is contra-intuitive. It seems to me, the the higher the SoC, the more it is available to push the truck into “electric driving,” shut off the ICE, and therefore get more mpg’s. Perhaps I have misunderstood you. Please explain.

 

[SuperDave71]

I think different situations call for different approaches. I drive hours on the highways. I’ve found once SOC is in the low 60’s, charging current decreases and instant fuel economy increases. As I enter a small town (on state routes) I usually can make it through on battery.
If I was in an urban stop and go, stoplight to stoplight, I’d never get charged, using the battery after accelerating to maintain speed until the next stop probably bouncing 30-40%

 

[Waterick]

Keeping the SoC low to maximize mpg’s is contra-intuitive. It seems to me, the the higher the SoC, the more it is available to push the truck into “electric driving,” shut off the ICE, and therefore get more mpg’s. Perhaps I have misunderstood you. Please explain.

To get the battery in a low SOC means you have already done just that: driven more on electrics and shut down the ICE.

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