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 Post subject: "Solenoid Valve Current" - actual or presumed?
PostPosted: Mon Jan 14, 2019 2:06 pm 
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Joined: Mon Oct 21, 2013 6:35 am
Posts: 52
Location: Eastern ON, Canada
In the Romraider Logger definitions there are parameters for "Solenoid Valve Current". In regard to those related to the 5AT transmission for shifting, AWD, lock-up and line pressure, is the indicated current an actual measurement (made by the TCM of the [average] current flow to the solenoid), or is it a target or presumed current (perhaps calculated from the duty cycle and battery voltage)?

(There's also corresponding "Solenoid Valve Pressure" parameters in the definition list, but in the FSM these are described as "Target Pressure" and, therefore, clearly not actual pressure.)


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 Post subject: Re: "Solenoid Valve Current" - actual or presumed?
PostPosted: Mon Jan 14, 2019 5:07 pm 
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Joined: Mon Jan 19, 2009 2:31 pm
Posts: 1615
Location: Moscow, Russia
Solenoid current value is most probably calculated from the duty cycle.
This is exactly so for ecu OCV Solenoid Current Right\Left values.


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 Post subject: Re: "Solenoid Valve Current" - actual or presumed?
PostPosted: Mon Jan 14, 2019 5:36 pm 
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Joined: Mon Oct 21, 2013 6:35 am
Posts: 52
Location: Eastern ON, Canada
Sasha_A80 wrote:
Solenoid current value is most probably calculated from the duty cycle.
This is exactly so for ecu OCV Solenoid Current Right\Left values.


That's what I thought, but haven't been able to find any documentation or results of actual measurements. I was focusing on the transmission parameters. Is there any documentation or actual test reports that indicate this for the ECU values?


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 Post subject: Re: "Solenoid Valve Current" - actual or presumed?
PostPosted: Tue Jan 15, 2019 3:01 am 
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Joined: Mon Jan 19, 2009 2:31 pm
Posts: 1615
Location: Moscow, Russia
Those findings are from ecu software hacking.
You may analyze SSM parameter calculations in you particular ecu software.


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