Mach1E
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- Sep 5, 2021
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- #16
We don’t need to guess. Ford has acknowledged “5 seconds” as a limit.well.... we certainly have different opinions on this one. I've been driving BEVs since 2008, and I can tell you that Inverters are capable of sensing their internal temps rapidly, and clamping down on current to reduce heat is the typical way they prevent damage to themselves.
The resolution of the sensor readings in those runs I don't think is fine enough to make any definitive statements. If it were just current versus inverter temp, on as fine a time resolution as possible, you may draw different conclusions.
..... unless we have an actual Ford Engineer to chime in, its just conjecture until disproved. One simple reversible mod to test the theory would be to splice in a chiller on the Inverter coolant loop and see if you get full current for more time by keeping the Inverter below xxx degrees.
That’s a time limit, not a temp limit.
We also know that it’s often less than 5 seconds, but never more.
If it’s a time thing, you can’t trick a clock by changing temperature parameters.
Now your “trick” could make gray bars go away sooner after a run or at highway speeds for example if temp feedback limits it more in those situations.
For example you might get 3 seconds at 60-100 mph instead of 2.
But nothing like this will get you 6 seconds.
The resolution on the log is fine. You can clearly see the inverter temp drop to normal BEFORE the 5 second limit kicks in.
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