IC ENGINE FORMULAS

$$bp=\frac{2\pi nT}{60000}$$ $$bmep=\frac{bp×6000}{LAnK}$$ $$mps=\frac{2 L rpm}{60}$$ $$ip=\frac{p_{im}LAnK}{60000}$$ $$bp=\eta_{bth}×Heat input$$ $$P_{bm}=\frac{P×60000}{\frac{\pi}{4}D^2L\frac{N}{2}}$$ $$Brakepower=\frac{2\pi nT}{60000}$$ $$fp=ip-bp$$ $$bsec=\frac{kW heat input}{kW heat output}$$ $$bsfc=\frac{m_f'}{bp}$$ $$isfc=bsfc \eta_m$$ $$bsec=bsfc×CV$$

CV=the lower heating value of the fuel

$$imep=\frac{\frac{bp}{\eta_m}×60000}{LAnK}$$ $$\eta_m=\frac{bp}{ip}$$