Author Topic: Higher voltage  (Read 664 times)

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Re: Higher voltage
« Reply #15 on: June 09 2018, 11:58:59 AM »
The pcm in my car has correction from 4.5-18v. I highly doubt the injectors or coils would fire that low!
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Re: Higher voltage
« Reply #16 on: June 09 2018, 02:57:50 PM »
I imagine that is mainly for the dead alternator limp home mode when we see such extremes
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Re: Higher voltage
« Reply #17 on: June 09 2018, 03:09:14 PM »
People forget that hot battery needs to charged at a lower rate, some of the drop is by design.


The recommended compensation is a 3mV drop per cell for every degree Celsius rise in  temperature.
 If the float voltage is set to 2.30V/cell at 25C (77F), the voltage should read 2.27V/cell at 35C (95F).

 Going colder, the voltage should be 2.33V/cell at 15C (59F). These 10C adjustments represent 30mV change.
« Last Edit: June 09 2018, 04:31:35 PM by daveismissing »
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Offline good2win22

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Re: Higher voltage
« Reply #18 on: June 09 2018, 11:26:09 PM »
Steve,


I recently won a waffle for a champion A/C delete.  Was going to check the alternator wire to the battery when I get some time to install that new bracket.  Getting rid of that pesky tensioner is gonna be nice.


Voltage drop across the length of the wire has always been an issue for electricity thus the development of alternating current and all those voltage drop charts.  My issue is dropping voltage at higher RPM.


So the short answer Steve, is I haven't got back to it yet   
Jason

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Re: Higher voltage
« Reply #19 on: June 09 2018, 11:58:41 PM »
A regulated switching power supply should give a constant output regardless on the input voltage. I presume that is what the 'boost a pump' type devices are. Run your ignition , injectors etc off of that. That sort of set up would avoid damage to the battery if that is a concern.
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Offline Steve Wood

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Re: Higher voltage
« Reply #20 on: June 10 2018, 12:04:59 AM »
LOL
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Re: Higher voltage
« Reply #21 on: June 10 2018, 09:42:07 AM »
I'll guess LOL can be interpreted as "waste of time"
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Offline Steve Wood

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Re: Higher voltage
« Reply #22 on: June 10 2018, 10:01:28 AM »
I was answering Jason's comment about "Haven't got back to it"  It reminded me of myself.

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