# Total Displacement

Written by Jerry Ratzlaff on . Posted in Fluid Dynamics

In engine design, the total displacement is the amount of volume displaced by engine cylinders.  It is measured in cubic inches, cubic cylinders or liters.

### Total Displacement Formula

$$\large{ DISP = NOC \;*\; \frac{\large{\pi}}{2} \;*\; BORE^2 \;*\; STROKE }$$

Where:

$$\large{ DISP }$$ = total displacement

$$\large{ BORE }$$ = cylinder bore size

$$\large{ NOC }$$ = number of cylinders

$$\large{ STROKE }$$ = piston stroke length