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Displacement Formula:
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Engine displacement refers to the total volume of all the cylinders in an internal combustion engine. It's a key parameter that indicates the engine's size and potential power output, measured in cubic millimeters (mm³) or other volume units.
The calculator uses the displacement formula:
Where:
Explanation: The formula calculates the volume of a single cylinder (π × radius² × stroke) and multiplies it by the number of cylinders to get total displacement.
Details: Engine displacement is crucial for understanding engine performance characteristics, fuel efficiency, emissions, and compliance with various regulations. Larger displacement typically means more power but also higher fuel consumption.
Tips: Enter bore diameter and stroke length in millimeters, and the number of cylinders. All values must be positive numbers with bore and stroke greater than zero, and cylinders must be at least 1.
Q1: What's the difference between mm³ and cc or liters?
A: 1 cubic centimeter (cc) = 1000 mm³, and 1 liter = 1,000,000 mm³. Engine displacement is often expressed in cc or liters for convenience.
Q2: Why is displacement important for engine performance?
A: Larger displacement engines can typically produce more power and torque, but may have lower fuel efficiency compared to smaller engines.
Q3: Can I use this calculator for any engine type?
A: This formula works for most piston engines including inline, V, flat, and rotary engines (with appropriate modifications for rotary engine geometry).
Q4: How accurate is this calculation?
A: The calculation provides theoretical displacement. Actual effective displacement may vary slightly due to manufacturing tolerances and combustion chamber design.
Q5: What about engines with different bore sizes?
A: For engines with varying bore sizes between cylinders, you would need to calculate each cylinder separately and sum the results.