In aircraft design, the “diameter of a spark-ignition (SI) engine” typically refers to the width or cross-sectional size of the engine at its widest point. The diameter is a fundamental parameter used in designing and analyzing various aspects of the engine’s geometry and performance.
Formula for Diameter of SI Engine (D):The formula to calculate the diameter of an SI engine depends on the specific component or aspect you are measuring. For a general calculation, you would measure the width or cross-sectional size of the engine at its widest point.
- Diameter (D) is typically measured in meters (m).