W linku ktory podalem chodzi o to, ze Dealer Toyota Hogan pozwal Toyote o to, ze recall / software fix nie wyeliminowal problemu, inverter nadal sie grzeje. Klienci wracaja i zglaszaja problem, byly przypadki, ze inverter padl na autostradzie i ktos sie bardzo zdenerwowal bo moglo dojsc do tragedii. Podobno nie jest to jednostkowy przypadek dlatego pozew wyladowal w sadzie. Wedlug Toyota Hogan problemu nie idzie wyeliminowac softem "The dealer claims it is a design issue with the inverter ".
USA = 800 inverter failures <2 months
ZE3 reactionary repair - doesnt prevent - after inverter failure
Dealer Toyota Hogan odmawia/wstrzymuje sprzedaz uzywanych priusow z 2010 to 2014 do czasu wyjasnienia sprawy:
Software fix for inverters?
Toyota has agreed to recall an estimated 800,000 Prius cars that stall due to burnt-out inverters. But Hogan and consumers say that the Priuses are still dying on the road, even after undergoing repairs.
The problem, as Hogan alleges in his lawsuit against Toyota and in a petition to federal regulators, is that Toyota is not addressing the root of the problem -- the inverter itself. Instead, Toyota says that the problem can be fixed with a software adjustment in the car?s computer.
A software fix costs corporate about $80 per car, Hogan says, far less than the estimated $2,000 cost of a new inverter. He is now refusing to sell Prius cars from the model year 2010 to 2014 that have the problem until Toyota agrees to replace the part.
Tu przemyslenia jednego z forumowiczow:
"Failure is caused by overheating of the active semiconductors, not some bulk material. Cooling is needed, not heat resistant material. The implication is the area of the semiconductor that is used to transfer the heat is not large enough for the heat being generated, but there is another issue with semiconductors running close to the limit, the "safe operating area". To extend this you pretty much need to replace the device with one that is larger. This does two things, it increases the "safe operating area" (this is the area under a graphed power vs temperature plot) because the power is shared by more material, and because the device is larger, it also increases the area through which heat may be transported to the "heat sink", in this case the liquid cooled heat sink.
Whether there is enough room to replace the devices in the current design inverter or replace the entire inverter with a newer design or whether there is even a device available to do so, or whether there is a better basic design I cannot determine. But Toyota can!"
Hybrid assistant pokazuje temp invertera wiec warto zwrocic na to uwage.
Wątek: Chek hubryd system auris Hybryd (Przeczytany 12227 razy)