Power usage for MME vs competition

[selstam]

Hi!

Do we know anything about how power hungry the MME is compared to the competition? Are there any real world numbers out there?

This is a graph I got from a test that was made to compare the usage at 120 km/h ....

These are supposed to be real world examples by a Norwegian guy, Bjørn Nyland.

More information here:


... and in his links he has some range test here ...

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[timbop]

no, not yet

 

[dbsb3233]

Only estimates from Ford so far. We've all been waiting anxiously for months for that crucial data. Especially for high speed highway driving (realistic road trip range).

 

[DBC]

Only estimates from Ford so far. We've all been waiting anxiously for months for that crucial data. Especially for high speed highway driving (realistic road trip range).

There won't be a single realistic number since there are so many variables which can make a large difference. The most obvious of course is that since drag goes up by the square of the velocity, going from 65 MPH to 75 MPH increases drag (and potentially range) by 30%. Then there are a ton of other variables like elevation gain/loss and wind speed and wind direction and temperature and humidity and altitude. And of course driver behavior. So your road trip range is going to be tres different depending on location and season and weather and driver.

My rule of thumb is 3 mi/kW but you will get a good by experimenting. That said, a steady 60-65 MPH doesn't use that much energy, so this would be a great question for the webcast. Even better would be more DC fast chargers!

 

[selstam]

Well, since I'm kind of rooting for Ford and the MME I'd like it to be as good as it can on every level. Although efficiency could potentially make a cheaper car just by having better range than competitors with smaller batteries.

But yes, you're right, the total range matters but efficiency can be tuned and as with the Teslas OTA updates efficiency might just get better with future updates.

 

[selstam]

There won't be a single realistic number since there are so many variables which can make a large difference.

That's true, but I'd assume a lot of the range anxiety could go away if people have numbers, any numbers.

The only real world test I've seen is the Norwegian Ford executive driving- and for whatever it's worth it looks promising.

 

[dbsb3233]

There won't be a single realistic number since there are so many variables which can make a large difference. The most obvious of course is that since drag goes up by the square of the velocity, going from 65 MPH to 75 MPH increases drag (and potentially range) by 30%. Then there are a ton of other variables like elevation gain/loss and wind speed and wind direction and temperature and humidity and altitude. And of course driver behavior. So your road trip range is going to be tres different depending on location and season and weather and driver.

My rule of thumb is 3 mi/kW but you will get a good by experimenting. That said, a steady 60-65 MPH doesn't use that much energy, so this would be a great question for the webcast. Even better would be more DC fast chargers!

That's why I'm anxiously awaiting real world reviews more than the EPA numbers. Through this whole learning process this year, I've come to find the EPA numbers are less and less useful for much. (Bordering on worthless.)

Although TBH, I'm not sure a 10% difference in interstate range is really gonna change much anyway. The spacing of EA stations along interstates pretty well determines where and how often we'll have to stop, far more than another 10% of high speed range would.

 

[ajmartineau]

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