The cross-sectional area of a piston ring is a geometric parameter that helps to understand the dimensions and characteristics of the ring. It can be calculated using the formula for the cross-sectional area of a ring, which has a rectangular cross-section:
- A is the cross-sectional area through which air enters (in square meters, m²).
- ṁ is the mass flow rate in kilograms per second (kg/s).
- ρ is the air density in kilograms per cubic meter (kg/m³).
- V is the velocity of the air entering the engine (in meters per second, m/s).