Vehical Engine Horsepower

Written by Jerry Ratzlaff on . Posted in Fluid Dynamics

Vehical Engine Horsepower Formulas

\(\large{ EHP_v =  W  \left(  \frac{ s }{ 234 }  \right)^3  }\)   
\(\large{ EHP_{vc} =  W \; \left(  \frac{ s_2 }{ 234 }  \right)^3  -  \left(  \frac{ s_1 }{ 234 }  \right)^3  }\)   

Where:

 Units English Metric
\(\large{ EHP_v }\) = vertical engine horsepower \(\large{ \frac{lbf-ft}{sec} }\) \(\large{ \frac{J}{s} }\)
\(\large{ EHP_{vc} }\) = change in horsepower \(\large{ \frac{lbf-ft}{sec} }\) \(\large{ \frac{J}{s} }\)
\(\large{ s }\) = speed \(\large{ \frac{ft}{sec} }\) \(\large{ \frac{m}{s} }\)
\(\large{ s_1 }\) = initial speed \(\large{ \frac{ft}{sec} }\) \(\large{ \frac{m}{s} }\)
\(\large{ s_2 }\) = final speed \(\large{ \frac{ft}{sec} }\) \(\large{ \frac{m}{s} }\)
\(\large{ W }\) = vehical weight \(\large{lbf}\) \(\large{N}\)

 

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Tags: Power Equations Horsepower Equations