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Effect of turbine pressure on rod tensile loads?

Discussion in 'Advanced Tech Section' started by Dave Flanders, Dec 9, 2008.

  1. Dave Flanders

    Joined:
    Feb 4, 2003
    Does anyone have a formula for computing rod tensile loads? Also is there a formula for calculating the effect that turbine pressure working against the piston on the exhaust stroke has on the tensile forces?
     
    Dave Flanders, Dec 9, 2008
    #1

  2. Boost Engineer

    Joined:
    May 19, 2004
    Boost Engineer, Dec 9, 2008
    #2

  3. Dave Flanders

    Joined:
    Feb 4, 2003
    I was hoping it would be as easy as TIP, RPM and bore size. No such luck? :( What info would be required?
     
    Dave Flanders, Dec 9, 2008
    #3

  4. Anthony Fury

    Joined:
    Sep 16, 2003
    Give me a little bit here to post this - right or wrong, I made an excel spreadsheet that calc's maximum piston acceleration (based on bottom end geometry and RPM), then based on piston mass, gives (what I think is a good approximation of) the rod's tensile load. I did some calcs based simply on piston area and pre-turbine pressure (I'm sure there are many other factors)...it helps (vs. N/A), but not a super amount.
     
    Anthony Fury, Dec 19, 2008
    #4
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