Charging Cycles

[MakinDoForNow]

My Ecoboost slippery equally powers all four wheels all the time. And slackens throttle response nothing more. I coast better/best in normal mode, I assume because my RDU is not “In Gear”, engaged as much. That for the Ecoboost is less drag.

So I guess the Mavbrid does regen at both ends. ?
Odd, I’ll try and look into it more.

I haven't looked at 25 hybrid Regen. If the rear wheels have their separate drive motor then both end could regen but I expect that would add too much to build cost.

Sponsored

 

[Darnon]

I haven't looked at 25 hybrid Regen. If the rear wheels have their separate drive motor then both end could regen but I expect that would add too much to build cost.

Hybrid AWD doesn't utilize any additional electric motors for propulsion.

 

[Cherokee]

Hybrid AWD doesn't utilize any additional electric motors for propulsion.

So,
How would slippery mode increase mpg in the Mavbrid ? I would think it had to be additional regen ?

I know it’s weird but I’d kinda like to see schematics. But I’d prolly not understand them all that well cause I’m an old codger

 

[heady]

It seems like Slippery reduces off-throttle regen; unexpected engine braking is not good for ice and such, but it also makes it easier to coast/roll farther too without having to feather the accelerator pedal, which is best for efficiency as well.

 

[MakinDoForNow]

So,
How would slippery mode increase mpg in the Mavbrid ? I would think it had to be additional regen ?

I know it’s weird but I’d kinda like to see schematics. But I’d prolly not understand them all that well cause I’m an old codger

Less regen when let off go pedal allows further coasting so you do not suffer from the energy lost converting to electricity then loosing some energy storing into battery then seconds later removing the stored energy in the battery and converting that into electricity.say you loose 15-20% in conversion losses. You can coast further in neutral if you don't Regen anything just Coast from 75 to 15 and then accelerating back to 75mph.

 

[Cherokee]

I’d have to relearn driving, more than a little.
I’m more of a hang with the F-150’s and 250’s that like to go Ten over the speed limit.

Our only way to get decent mpg’s is to get er’ into overdrive as quickly as possible without hammering the thing.
This old fart ‘Gasser’ will wind up in a Mavbrid sooner or later think.

But still the Mavbrid mileage is really something, for a truck it’s outstanding.

 

[dochawk]

NOTE: The optimum coasting/gliding gear with 0% Regen = NEUTRAL!

ahh, yes. Good old "Oklahoma overdrive" . . .

 

[HeyBales]

So,
How would slippery mode increase mpg in the Mavbrid ? I would think it had to be additional regen ?

I know it’s weird but I’d kinda like to see schematics. But I’d prolly not understand them all that well cause I’m an old codger

It is very odd.

Slippery mode has just a tad less regen than Normal mode when you let off the gas at slower speeds. So it's about allowing easier coasting without needing to feather the Go pedal to remove regen.
The difference increases as speed increases. Going faster Normal is even heavier regen on coast, Slippery is even less. (I've got some data files on test runs I really need time to spreadsheet and graph, but after the battery charging scheme data files are graphed)

On the other hand, because of that, the gentle slower rate of regen on coasting and braking that occurs in the top 80% of the meter, means the last 20% is a feathering job not to jamb right on in to the brake dust when desiring to slow down faster.

Personally, for my driving situations around here, I can feather the Go pedal pretty good and remove all regen and coast for as long as gravity will help - in Normal mode anyway.
When others talk about totally letting up on Go pedal when ICE is on, in order to slip into EV mode when the Go is gently pressed again, I can almost always just feather the pedal down to close to coast and grab the thin blue EV bar. (got some data log test runs for Go pedal too and % of press, but trying to figure out best way to graph, after the others are done)

On the other hand, my driving situations make the feathering of that last 20% of regen to get more serious braking very difficult for me and I'm constantly going into the physical brakes when using Slippery mode.

It's a trade off. And what your normal drive route gives you probably makes a good difference.

Eco mode on the other hand, not as gentle on the Go pedal as slippery, even heavier regen on the coast & braking than Normal. Probably works great for some scenarios, but not for my normal drives.

 

[mavtrik]

I had the same question early on—those constant charge cycles felt excessive. But from what I’ve read, hybrids are designed for that, and regen braking is actually good for battery health. It still feels weird at first, but I’ve come to trust the system. Curious to see how it holds up long-term though.

Mini Militia App Lock​

 

[Waterick]

I had the same question early on—those constant charge cycles felt excessive. But from what I’ve read, hybrids are designed for that, and regen braking is actually good for battery health. It still feels weird at first, but I’ve come to trust the system. Curious to see how it holds up long-term though.

None of this is new tech, it's already proven long term with both Nickle-Metal and Lithium-Ion batteries which have been used for decades now in this technology. Longevity of ten years plus and hundreds of thousands of miles is pretty much a norm with these systems. Maverick is our third hybrid behind two trouble free Prius' with each over 100k.

 

[MakinDoForNow]

I had the same question early on—those constant charge cycles felt excessive. But from what I’ve read, hybrids are designed for that, and regen braking is actually good for battery health. It still feels weird at first, but I’ve come to trust the system. Curious to see how it holds up long-term though.

Only soc 28-72% is actually all that's used the rest is for reserve/life. I'm think that a lot of the switching ice/elec.... Is diversion of generated current to elec drive instead of actually being put into battery and ice power is solely what's sent to drive train. Don't actually know. Perhaps removal of the float charge before it's chemically stored in battery doesn't actually count as a discharge. How many milliseconds does it take to "store" the float? There are a couple of capacitors in the DCDC but I think they are used to smooth the 3 phase. I trust in the guy that said the design usage of the battery can be considered as if it's a capacitor!

 

[heady]

Yeah, mild hybrids use the battery the same way you'd use a super capacitor, in fact the military versions like in the HEMTT do use fancy capacitors instead for even longer durability since cost is no object. Any charge that enters the lithium cell is immediately stored through the process of intercalation of electrons. Each cycle in a hybrid is small relative to the overall capacity, so it takes many of those smaller cycles to make an equivalent of 1 full cycle in an lithium ion cell, which is one common measure of durability, for instance a cell might expect to have a 2000 cycle life span before it reaches "end of life", which in commercial terms means it is down to 80% capacity remaining. Mild hybrids take a long time to use up cells with cycles which is why the batteries end up lasting so long, and they don't really mind cells that are degraded beyond 80% capacity either, so they can cycle longer without as much noticeable impact vs. plug in hybrids or EVs.

On top of that, the Maverick only has a reported 1.1kWh of cell capacity, and battery cost per kWh is around $115 now, so the battery has a nominal value of about $130. It will cost more per kWh than a comparable EV battery, because a larger portion of the total cost is the fixed costs, packaging, management PCBs, etc and less of the total is the cell cost, but still a very very cheap component in the truck.

 

[The Real Maverick]

None of this is new tech, it's already proven long term with both Nickle-Metal and Lithium-Ion batteries which have been used for decades now in this technology. Longevity of ten years plus and hundreds of thousands of miles is pretty much a norm with these systems. Maverick is our third hybrid behind two trouble free Prius' with each over 100k.

100k is nothing. They are guaranteed to last 100k. 200k is typical. 350-400k possible if used regularly and in milder weather conditions.

Extreme temperatures and non-use will cause a lower life.

 

[Cougar70]

My Ecoboost slippery equally powers all four wheels all the time. And slackens throttle response nothing more. I coast better/best in normal mode, I assume because my RDU is not “In Gear”, engaged as much. That for the Ecoboost is less drag.

So I guess the Mavbrid does regen at both ends. ?
Odd, I’ll try and look into it more.

When your Mav powers all wheels in Slippery mode, I don't know for sure, but I would think putting it in Slippery mode tells the truck that you are on a slippery surface, and it uses all available traction (as in all wheels instead of just front wheels) to better control traction. It doesn't know that you're just using it in an effort to increase mpg.
It's quite possible that on a fwd hybrid, it may be able to improve mpg.

I've only tried Slippery mode a couple of times and unless you're ready for the braking characteristics, I kinda think it's dangerous.
The first time I tried it, it almost felt like the brakes were failing, because I had to press the pedal harder to get the braking that I needed. I think it's trying to modulate the brakes so you don't go sliding on a "slippery" surface.
I'm actually tempted to see if I can remove Slippery mode in Forscan.

 

[Cougar70]

So,
How would slippery mode increase mpg in the Mavbrid ? I would think it had to be additional regen ?

I know it’s weird but I’d kinda like to see schematics. But I’d prolly not understand them all that well cause I’m an old codger

I think it's due to a more efficient use of the regen braking, where Slippery mode makes it easier to recapture more during braking than the other modes

Sponsored