Do our trucks learn, or not??
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Hotshot
Joined: Feb 2007
Posts: 10,499
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From: Sterling Heights,Mi
Do our trucks learn, or not??
Last week I was getting ready to drive 550 miles one direction with a empty 6x12 enclosed trailer. I opted to change my Hyptertech to the 60 hp for fuel savings. I drove the truck for about an hour and said screw it, went back to the 100hp setting. Truck ran fine, no complaints. But my gas milage stunk.. I pulled a trailer with 8000# of block and got 14 on the hiway a year ago, with an empty trailer last week end, I averaged 12.25 up. and with 3 desk, 3 bunk beds, and assorted garbage, i got 11.25..
Any thoughts?
Any thoughts?
Post Fiend
Joined: Sep 2006
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From: Millbrook Alabama
To answer your original question, Yes, to an extent they learn. We asked Jody the exact same question during live tuning, and he told us that the PCM does "Learn" . Basically it adjusts itself to the load place on the engine.
Postmaster
Joined: Jul 2006
Posts: 4,993
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From: Bend, OR
Our PCM's have no logic... I would bet Jody would say the same thing. They do not learn. It looks at tables and ajusts for the conditions. That is not learning.
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Hotshot
Joined: Feb 2007
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From: Sterling Heights,Mi
Brandon, did Jody make any statement to that?
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Elder User
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From: Reno nv
what do you call modifing the LT & ST fuel trims? Mine didn't get to -38 after a reset all by itself.
When my brother drives it for a week, the LTFT goes back to about +10 or so then my mileage stinks for about a month. When my wife drives it, LTFT goes to -15.
How else does Limp mode function? the PCM HAS to know that some sensors have failed and modifies what it can to keep running, if possible
There may not be LOTS of adaptive learning, but it has more than a calculator
When my brother drives it for a week, the LTFT goes back to about +10 or so then my mileage stinks for about a month. When my wife drives it, LTFT goes to -15.
How else does Limp mode function? the PCM HAS to know that some sensors have failed and modifies what it can to keep running, if possible
There may not be LOTS of adaptive learning, but it has more than a calculator
Postmaster
Joined: Jul 2006
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From: Bend, OR
There is NO adaptive learning, only set paramiters for differant operating paramiters.... If its 30 degrees it runs this way. If its 70 it runs this way... If the ICP sensor goes bad it goes to default settings. If the EBP sensor goes bad it throws a code. There is no learning stradigy in the 7.3.
Post Fiend
Joined: Sep 2006
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From: Millbrook Alabama
There is NO adaptive learning, only set paramiters for differant operating paramiters.... If its 30 degrees it runs this way. If its 70 it runs this way... If the ICP sensor goes bad it goes to default settings. If the EBP sensor goes bad it throws a code. There is no learning stradigy in the 7.3.
Now I am not saying he said anything about AI, or quantum adaptive strategies. But a conditioned response as suggested earlier may be a more appropriate answer.