Andyw2100
Well-Known Member
You are many times more likely to die in a fatal car accident on the way to/from the SpC!
Well aren't you just Mr. Sunshine!
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You are many times more likely to die in a fatal car accident on the way to/from the SpC!
I believe the car was a CPO. I know it was purchased only a couple of days before the fire. Maybe the technician who went over the car accidentally left something in there that caused a short the first time it was plugged into a supercharger? That would be my first guess. I'd look at the service logs from when the car was prepped for CPO sale and see if anything was opened up in the charging circuitry.
... and I saw from the work order they'd changed my HVJB to gen 2.
.... You are many times more likely to die in a fatal car accident on the way to/from the SpC!
Well aren't you just Mr. Sunshine!
If you like sunshine, here's a bit more: It is certain that each one of us will die. Nothing to worry about, there's no evidence to suggest that dying is worse than living
Out of curiosity to those who have advanced knowledge of these things, is there anything Tesla can do from a small scale fire suppression perspective? In other words, does the technology exist to put in some sort of temperature activated expandable foam that would help in these rare instances? Say the HVJB hits a specific temp range and a canister of expandable foam explodes, in conjunction with the current being cutoff, that fills the HBJB with foam thus putting out the "fire". Yeah that certainly would likely render the HVJB useless but in the 1 and 2.5 million chance...
Or am I simply proposing an unreasonable solution to a very rare problem that is likely already addressed via firmware?
Jeff
Out of curiosity to those who have advanced knowledge of these things, is there anything Tesla can do from a small scale fire suppression perspective? In other words, does the technology exist to put in some sort of temperature activated expandable foam that would help in these rare instances? Say the HVJB hits a specific temp range and a canister of expandable foam explodes, in conjunction with the current being cutoff, that fills the HBJB with foam thus putting out the "fire". Yeah that certainly would likely render the HVJB useless but in the 1 and 2.5 million chance...
Or am I simply proposing an unreasonable solution to a very rare problem that is likely already addressed via firmware?
Jeff
Military aircraft systems mostly work by denying the fire oxygen, substituting an inert gas. One system I'm somewhat familiar with that could be scaled to HVJB size is pretty much an oversize car airbag inflator module without the airbag - when it goes off the propellant burns and produces an expanding gas front that will likely blow out the fire and certainly leaves the enclosed area filled with the inert combustion gasses.
However, if Tesla knows where the heat is being developed and monitors that, cutting power before it gets to fire temperatures would certainly seem wiser - it should prevent damage to the systems as well as the fire.
Even if they don't know where the power is going or have temperature sensors in all the relevant places, doing a power checksum would catch situations like this before they became critical. The car is in digital communication with the Supercharger, so the charger can pass it how much power the charger thinks it is delivering. The car is monitoring the battery pack, it knows how much power is arriving at the pack (and also how much is turning to heat in the pack and how much is being dissipated by the cooling systems, but those aren't central to this discussion.)
If the car compares those two and notices a significant discrepancy between the power the SpC thinks it is delivering and the power the battery is receiving, the car could flag the situation, report an error and disable Supercharging until it is checked (or do some sort of recycle on the systems on one or both sides first.)
Walter
Besides cost, there is also the fact that it's almost always possible to pull your car over and walk away from it within a minute or two of noticing a fire. Try that with a plane.Adding fire suppression systems is worth the extra cost. Compared to the cost of the entire plane, it isn't much. But adding a fire suppression system to a car could add a few thousand to the cost of the car for a system that will probably never get used.