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  • Fuel injection for required Torque.

    Wikiuma

    Member

    Updated: Oct 26, 2024
    Views: 1.3K
    Hello Engineers,

    i wants to know the Exact formula to calculate the fuel consumption of the required Torque.any formula is there to calculate?for example if the torque requested is 50Nm then what quantity of fuel will inject in the four stroke Diesel engine?Please help me .Thanks in Advance😀
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  • zaveri

    Member • Aug 16, 2012

    Refer to any automotive handbook by SAE.
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  • Wikiuma

    Member • Aug 18, 2012

    😎
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  • zaveri

    Member • Aug 18, 2012

    Wikiuma
    😎

    Got it ?
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  • roon.mech

    Member • Aug 18, 2012

    Wiki

    this is a rough derivation. someone correct me if iv made a mistake.

    1 gallon of diesel contains = 147,000 btus
    1 hp = 42.44 btu/min

    to make 1 hp you need to use 0.0002887 gallons of diesel / minute

    1 hp = (torque x rpm)/5252

    torque = (0.0002887 gallons/min) x (5252/rpm)

    torque produced = [gallons/minute] x [1.5162/rpm]

    substitute gallons per minute of diesel and crank rpm into the above formula and you have your torque in lb-ft.

    in the meantime let me see if i can dig up some formulas from somewhere.
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