Volumetric Efficiency for an Enzo | FerrariChat
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Volumetric Efficiency for an Enzo

Discussion in '288GTO/F40/F50/Enzo/LaFerrari/F80' started by WKM, Feb 10, 2010.

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  1. WKM

    WKM Rookie

    Oct 23, 2009
    46
    Riverton, Utah
    #1 WKM, Feb 10, 2010
    I'm am trying to determine the engine airflow rate of the Enzo. After many unsuccessful Google searches and seeing the level of math required to make those types of calculations...I am wondering if anyone on this forum might have the answer.

    Your help is appreciated!!
     
  2. bbs911

    bbs911 Formula Junior

    May 31, 2007
    590
    Dallas
    #2 bbs911, Feb 10, 2010
    Last edited: Feb 10, 2010
    Bill S, where are you? This question is tailor made for you.
     
  3. Bill S

    Bill S Formula 3

    Oct 2, 2004
    1,995
    #3 Bill S, Feb 10, 2010
    Good one! Unfortunately you can't calculate VE unless you have the complete model for the Enzo engine. It must be measured, and I don't know if anyone has measure that. I could probably do it from the Mass Airflow Sensor (MAFS).

    In simple terms, VE is just the actual amount of air being pumped by the engine compared to its theoretical maximum. This is expressed as a percentage.

    You can calculate the theoretical maximum airflow for the Enzo assuming 100% VE:

    100% VE airflow (SCFM) = Displacement (liters) X RPM X .01766

    So, for a 6.0-liter Enzo engine turning 8,000 rpm, you get 847 SCFM (sea level standard day cubic feet per minute).
     
  4. JH

    JH F1 Veteran
    Silver Subscribed

    Nov 14, 2002
    5,080
    Odense, Denmark
    Full Name:
    Jonas H.
    #4 JH, Feb 11, 2010
    Are you a engineer? :D
     
  5. bbs911

    bbs911 Formula Junior

    May 31, 2007
    590
    Dallas
    #5 bbs911, Feb 11, 2010
    Here's how I interpreted Bill's response:

    Good one! Unfortunately huh what huh what huh what huh what the Enzo engine. Huh what huh what (what).

    In simple terms, Huh what huh what huh what huh what. This is expressed as a percentage.

    Huh what huh whta Enzo huh what:

    huh% what (huh) = Displacement (liters) X RPM X .01766 (where'd this number come from?)

    So, for a 6.0-liter Enzo engine turning 8,000 rpm, you get 847 SCFM (sea level huh what cubic feet per minute).
     
  6. WJC

    WJC Formula Junior

    Apr 28, 2004
    855
    Austin, TX
    Full Name:
    Joe C.
    #6 WJC, Feb 11, 2010
    LOL!

    That is awesome!

    I can follow what Bill is saying but I just thought this was great!
     
  7. Bill S

    Bill S Formula 3

    Oct 2, 2004
    1,995
    #7 Bill S, Feb 11, 2010
    Excellent!!!
     
  8. bbs911

    bbs911 Formula Junior

    May 31, 2007
    590
    Dallas
    #8 bbs911, Feb 11, 2010
    Now you're probably wondering, "How'd that guy ever get a CGT?"
     
  9. Bill S

    Bill S Formula 3

    Oct 2, 2004
    1,995
    #9 Bill S, Feb 11, 2010
    Not with something as creative as that!
     
  10. INTMD8

    INTMD8 F1 Veteran
    Owner Silver Subscribed

    Jun 10, 2007
    6,757
    Lake Villa IL
    #10 INTMD8, Feb 12, 2010
    Well, the enzo makes 651hp. It takes roughly 10lbs/min airflow to make 100hp so the airflow rate at peak hp of this engine is approximately-

    65lbs/min or 491 grams/sec

    What are you trying to figure this out for?
     
  11. WKM

    WKM Rookie

    Oct 23, 2009
    46
    Riverton, Utah
    #11 WKM, Feb 15, 2010
    Thanks Bill and INTMD8....I will put this information to good use! I am doing some theoretical "what ifs" on the potential power gains that could be produced with modifications to the Enzo induction system.
     

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