ICE restart
When the ICE cycles off and on, is it using the 12V battery to restart or the BatteryPack? It seems if you start/stop alot the battery is getting worked much harder than a conventional setup.
Im assuming there is no "starter" being used since its an instantaneous startup.... How does it work exactly? |
Re: ICE restart
Originally Posted by grnhybrid
(Post 147761)
When the ICE cycles off and on, is it using the 12V battery to restart or the BatteryPack? It seems if you start/stop alot the battery is getting worked much harder than a conventional setup.
Im assuming there is no "starter" being used since its an instantaneous startup.... How does it work exactly? When the ICE cycles off, MG1 continues to turn the engine during fuel cut till all the unburned fuel in the intake manifold etc. is burned for emissions purposes. The HV battery is designed to handle starting with MG1 with little effort as many times it takes for FE. GaryG |
Re: ICE restart
Thanks Gary,
What about starting from a cold start (key turn). Does the 12v battery work alone here or is it also being assisted some way? Are the CCA the same as a conventional start? john |
Re: ICE restart
Originally Posted by grnhybrid
(Post 147765)
Thanks Gary,
What about starting from a cold start (key turn). Does the 12v battery work alone here or is it also being assisted some way? Are the CCA the same as a conventional start? john GaryG |
Re: ICE restart
Got it. One last thing then I'll stop bothering you.
It seams that given the 12V battery is only being used for that purpose that it will last longer? or does the HV battery fall below its SoC limits often enough to put a drain on it? (what is the SoC exactly). please exuse my ignorance, 1st FEH. |
Re: ICE restart
The 12 v battery will last as long as most 12 v auto batteries. Its not the useage its the time since manufacture, though abuse will kill a battery sooner. I think the batteries in the 05s are reaching their useful life right now. If you didnt have the possible, though rare need to "jumpstart" the HV battery you could use a motorcycle battery.
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Re: ICE restart
Originally Posted by grnhybrid
(Post 147773)
Got it. One last thing then I'll stop bothering you.
It seams that given the 12V battery is only being used for that purpose that it will last longer? or does the HV battery fall below its SoC limits often enough to put a drain on it? (what is the SoC exactly). please exuse my ignorance, 1st FEH. Your not bothering me, all of us were in your shoes and many people don't want to ask these questions. I want you to learn how to pay back big oil with good mileage. Learning how the FEH/MMH works will help. GaryG |
Re: ICE restart
Originally Posted by GaryG
(Post 147775)
It is very rare that the HV battery falls below the SoC (state of charge) limits required to start the ICE. Normal SoC range is 40-60% capacity which means the computers will try to keep the HV battery above 40% on the low side and 60% on the high side. This is what helps make the HV battery last over 150,000 miles which is its maximum warranty.
Your not bothering me, all of us were in your shoes and many people don't want to ask these questions. I want you to learn how to pay back big oil with good mileage. Learning how the FEH/MMH works will help. GaryG Don |
Re: ICE restart
Originally Posted by econoline
(Post 147776)
Gary, that was your 1000th post. Congratulations and thanks for all the good info.
Don GaryG |
Re: ICE restart
Over the years, I feel I've gotten better than average life from auto batteries by keeping them clean and, several times a year, giving them a long trickle charge to max them out. Is this of potential benefit on the FEH?
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