2025 Maverick Hybrid HF55 Transaxle Info (nice write up)

[AVC]

The "article" just doesn't sound right to me. No proof (yet) just gut feeling.

Agree, 2nd source, at best.

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[710-oil-614]

Agree, 2nd source, at best.

Spent and hour with the Maverick product manager that’s straight from the horse’s mouth.

Additionally HF55 already paired to 2.0eb in nautilus.

HF55 new and improved putting down much bigger electric power numbers resulting in faster 0-60 and highway passing acceleration while supporting AWD and 4K and maintaining the same efficiency as the FWD HF45. Super impressive!!

 

[MavHarbin]

Does 2025 FWD Hybrid still get HF45? Or it's with the new HF55 suggested by the wired?

 

[710-oil-614]

Does 2025 FWD Hybrid still get HF45? Or it's with the new HF55 suggested by the wired?

All new Mavericks get HF55. That is the reason for the improved MPG rating for FWD over 22-24

 

[The Real Maverick]

Spent and hour with the Maverick product manager that’s straight from the horse’s mouth.

Additionally HF55 already paired to 2.0eb in nautilus...

You did? When? Did you take photos?

 

[twntyfive2life]

Lmao what sort of proof do you want? It is absolutely unhinged to read this completely innocuous interview and choose to not believe it

 

[710-oil-614]

Lmao what sort of proof do you want? It is absolutely unhinged to read this completely innocuous interview and choose to not believe it

I mean Fords product manager is totally lying to Wired

 

[dochawk]

But I'm wondering if the larger generator is pulling more power slowing it, because the battery is never fully charged with the way I drive.

It's variable. The more load you put on it (the more juice you draw), the more it slows you.

Ford never was honest about the Hybrid torque since the beginning.

The best claim was the old Rolls Royce response to questions about horsepower: "Sufficient."

And then came the Bentley Turbo R in the 1980s, when they slapped a pair of turbos on the big Rolls V8, and it could match the top Porsche and Corvette to 60. This time, they said, "more than sufficient."

I’d want,
The 2.0Liter Turbo with the H55 transaxle and the larger electric motors and the

you're thinking small.

Ask for the Powerboost!

 

[LSchicago]

Next they need the 2.0 Turbo setup from the Nautilus in the Maverick from the factory. That would be a great Lobo.

 

[Cherokee]

Or the 2.3 Ltr,
And a plug in,
And a 300 mile battery only range,
All this coupled to a five speed manual.
Now we be talkin’ Smack ya back !

 

[LSchicago]

2nd paragraph, if accurate.
New motors, combined with ICE - boost power to 191 HP.

That's not a boost if they are referring to prior MY's - it was already 191 HP combined.
If they are saying what was true about prior MY's - the motor boosts the combined to 191 HP, then fine.
Not news - actually disappointing with bigger motors.

Here's the prior MY's stats separate. Which combined is 191 HP and 245 TQ.
ICE: 162 hp@5600 / 155 lb-ft@4000
Traction Motor: 94 kW (126 hp) / 173 lb-ft

When someone actually Dynos one well will have real numbers. The 2022 dynoed 267TQ if I remember correctly. Ford never published a number anywhere near that.

 

[LSchicago]

seems like telling people that it has more electric motor capacity would be a thing you could use to sell trucks?

But then no one would buy all the 24's on the lots. Ford hides the 25 Build and price because they are still trying to move the 24's!

 

[23grayXLT84]

All this improvement talk has people in awe, yet less than 10% will ever utilize its capabilities to it's full extent.

Increase battery size, or make a PHEV then we have something to rave about and have something to compete with sliced bread.

 

[LSchicago]

When you look at the HF55 in the Nautilus, it adds 50HP beyond the 2.0 Turbo HP. If the same electric motors and trans add 50 HP to the Maverick's 162 engine HP, potentially raising it to 212HP in The Maverick Hybrid seems to make sense.

 

[Phimosis]

Interesting.

So the effect of regen being too much for the battery already, which didn't change in size, is now that more regen is possible.

So now the engine will be spun up even more often to waste electricity on long regen scenarios.

I wonder if they improved the battery to accept that higher kW, along with wires to conduct it?

Interesting the HP didn't increased when combined.
But since combined torque before was 245, and motor is already at 236 on it's own, new combined should be interesting.
Someone with Scantool or Forscan on the 25MY can at least find out what Ford put into the system for what they think it is.

Thanks for article.

Here’s the crux of the issue:

The transmission has two motor generators MG1 is the larger one, also known as the traction motor. It drives the input shaft of the transmission. This can be done alone, or in conjunction with ICE crankshaft output. MG2, the smaller unit, does most of the regenerative braking and battery charging.

The sun gear (red) is driven by the engine or MG1, or both. It then spins the planetary gears (dark blue), which then spin the ring gear (yellow/green), which spins MG2. In that scenario, the planetary carrier (light blue) is not moving. The planetary carrier is attached to the transmission output. In this condition, the vehicle is stopped.

This gif shows the sun gear (orange) operating at engine idle rpm, while the ring gear (green) is freewheeling and the planetary carrier (grey) is stopped. Since the planetary carrier is connected to the transmission output, the car is stopped.

The next condition to consider is if the ring gear is held at a fixed position. Then the engine drives the sun gear, and planetary gears, which then rotate the planetary carrier, making the transmission output rotate at roughly 1/3 of the speed of the input from the sun gear, because the ring gear is now being held, locked in place.

in this gif, the sun gear is green, the planetary gears are blue, the planetary carrier is red and the ring gear is grey,

Now consider a third condition, where the ring gear is only partially slowed down by adding drag on the ring gear in the form of MG2 serving as a generator. That is how a planetary CVT creates the variable gear ratio.

Add a very light drag on the ring gear and you get a lot of rotations of the sun gear while getting very few rotations of the planetary carrier.

Add a heavy load on the ring gear and you get more rotations out of the planetary carrier for the same input RPM, which means a higher gear ratio.


So if the MG2 generating load is heavy, like you’re generating 50kw and the battery is full, what do you do with that energy? Send it back to MG1, the traction motor, to spin the transmission input even faster, or spin it at the same speed, but with more torque.

Next condition: let’s say MG2 is only 50kw max. What would happen? If you try to accelerate a Maverick with 4k trailer uphill on an onramp at full throttle, it spins engine to a governed 5,500 rpm. MG2 clamps down on the ring gear with 50 kw of force, but the 160 hp ice engine overpowers MG2 and the ring gear spins furiously, which means it is stuck in a lower gear ratio than what the computer is telling it to deliver. The result is that you accelerate slower and deliver less HP to the wheels because MG2 can’t clamp down on the ring gear to deliver the higher gear ratios and because the engine input speed is already maxed out at 5,500 rpm.

The way to deliver that slingshot effect of a CVT at redline is to keep changing the planetary to a higher and higher gear ratio. If MG2 is not big enough, it can’t change to a higher gear ratio.

Also, if you increase the size of MG2, let’s say we double from 50 kw to 100 kw, then, not only will MG2 be able to clamp down harder on the ring gear to get into the higher gear ratios, it will be generating more KW of energy, which it will then to send to MG1, the traction motor, driving the sun gear with even more torque.

In the end, increasing the size of MG2 is not about charging or discharging the battery with more kw. It is about maintaining efficient overdrive ratios at freeway speed to keep engine rpm down, while the load of towing is high.

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