Water Injection suggestions

Testing and development of Megasquirt 3

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93supercoupe
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Water Injection suggestions

Post by 93supercoupe »

Hello all,

Im getting ready for another season with the turbo car and this year id like to rely on my meth injection setup a little more, but i think the feature could use some help.

The main issue i was having that when the meth injection was on, there was no easy way to subtract fuel from the VE table to compensate for the addition of the meth. So in my setup, i was trying to have the meth come on above a certain MAT, but couldnt effectively do that because with the addition of the meth, it would run rich. Also, the possibility of adding or subtraction ignition timing may be helpful, to some.

I was wondering if there was a possibility of the addition of a simple 1 line table, like such. (this example is from a nitrous function)
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tpsretard2
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Re: Water Injection suggestions

Post by tpsretard2 »

This would be a very cool way of handling this.
93supercoupe
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Re: Water Injection suggestions

Post by 93supercoupe »

tpsretard2 wrote:This would be a very cool way of handling this.
I agree, thanks for the support

Obviously it would only use these "mini" tables when the water injection function is active
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franksidebike
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Re: Water Injection suggestions

Post by franksidebike »

:?:
I make Tabel Switch whenn Water Injection goes on :!:
Frank
93supercoupe
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Re: Water Injection suggestions

Post by 93supercoupe »

franksidebike wrote::?:
I make Tabel Switch whenn Water Injection goes on :!:
Frank
Thats definitely an option, but its much more complicated and it also uses up an entire function for a simple process.

Im trying to have my meth come on according to MAT. To use tableswitch to do that, i would have to use an In and Out pin looped over, and those are getting scarce in my setup.
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franksidebike
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Re: Water Injection suggestions

Post by franksidebike »

93supercoupe wrote:
franksidebike wrote::?:
I make Tabel Switch whenn Water Injection goes on :!:
Frank
Thats definitely an option, but its much more complicated and it also uses up an entire function for a simple process.

Im trying to have my meth come on according to MAT. To use tableswitch to do that, i would have to use an In and Out pin looped over, and those are getting scarce in my setup.
Yes you are right!
In my setup I have many In and Out Pin's for this funktion.
In my Wather injection settings Wather pump goes on whenn:
TPS, RPM, MAT, MAP over my setpoint is switch the Watherpump with InjBank1 (Valve Output) on, and Pump Output (FIDLE) goes to PE1 and make the Tabel Switch.
Thus 3 outputs (InjBank1, FIDLE, PE1) for one funktion.
Frank
AbatelliCristian
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Re: Water Injection suggestions

Post by AbatelliCristian »

good idea
93supercoupe
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Re: Water Injection suggestions

Post by 93supercoupe »

Has this been given any thought?
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suberimakuri
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Re: Water Injection suggestions

Post by suberimakuri »

The latest alpha looks to have beginnings of Loop outputs which look to be internal, so you won't need to 'waste' a pair of pins.
That's a great start.
93supercoupe
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Re: Water Injection suggestions

Post by 93supercoupe »

So i downloaded the new 1.4.9, but im still unclear on how a I/O loop applies to my suggestion. I can see that being extremely effective for certain situations, but i dont see it being a better solution then what has been suggested.

Although i did read that the loop function is not complete? maybe it will become more clear later on?
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