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Thread: Closed Loop Airflow Mode vs Airflow - basis?

  1. #1
    Senior Tuner
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    Closed Loop Airflow Mode vs Airflow - basis?

    Closed Loop Airflow Mode vs Airflow shows an index
    from 0 to 320. The Help does not tell the units or
    basis. What is the reference quantity, what PID
    would match it (w/ or w/o scaling) in the scanner?

  2. #2
    Senior Tuner
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    Re: Closed Loop Airflow Mode vs Airflow - basis?

    That table shifts/squeezes the airflow range down to a smaller size axis.

    2D tables are always set up as:
    Table returned value vs. Variable

    In this case the airflow variable is used on the lookup table to return a number. This means the airflow range of 0-320gm/s will be divided into 80 table locations.
    That gives you 4gm/s per row. Returned table value can be from 0-16. This is your "Airflow Mode".

    Now take your returned table (0-16) value and use it as the new axis against all of the closed loop vs Ariflow mode tables.

    You can work it forwards or backwards to see what the airflow is going to be.

    Ken

  3. #3
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    Re: Closed Loop Airflow Mode vs Airflow - basis?

    OK, thanks... the upper end of 320 had me thinking
    it couldn't be gm/sec (since that can range a lot
    higher).