Engine Cubic Capacity Calculator

Engine Cubic Capacity Formula:

\[ \text{Displacement} = \pi \times \left( \frac{D}{2} \right)^2 \times S \times N / 1000 \text{ (liters)} \]

Engine Displacement:

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1. What is Engine Cubic Capacity?

Engine cubic capacity, also known as engine displacement, is the total volume of all the cylinders in an engine. It represents the swept volume of all pistons moving from bottom dead center to top dead center and is typically measured in liters or cubic centimeters.

2. How Does the Calculator Work?

The calculator uses the engine displacement formula:

\[ \text{Displacement} = \pi \times \left( \frac{D}{2} \right)^2 \times S \times N / 1000 \text{ (liters)} \]

Where:

\( D \) — Bore diameter (mm)
\( S \) — Stroke length (mm)
\( N \) — Number of cylinders
\( \pi \) — Mathematical constant Pi (approximately 3.1416)

Explanation: The formula calculates the volume of a single cylinder (π × radius² × stroke) and multiplies it by the number of cylinders, then converts from cubic millimeters to liters by dividing by 1000.

3. Importance of Engine Displacement

Details: Engine displacement is a key indicator of an engine's power potential and fuel consumption. Larger displacement engines typically produce more power but may consume more fuel. It's used for vehicle classification, taxation purposes, and performance comparisons.

4. Using the Calculator

Tips: Enter bore diameter and stroke in millimeters, and the number of cylinders. All values must be positive numbers. The calculator will provide the total engine displacement in liters.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between bore and stroke?
A: Bore is the diameter of the cylinder, while stroke is the distance the piston travels from top to bottom dead center.

Q2: How does displacement affect engine performance?
A: Generally, larger displacement engines produce more power and torque, but may have lower fuel efficiency compared to smaller engines.

Q3: What is a typical displacement range for passenger cars?
A: Most passenger cars have displacements between 1.0L and 3.0L, though this can vary significantly based on vehicle type and market.

Q4: Can I calculate displacement in cubic centimeters?
A: Yes, simply remove the division by 1000 from the formula to get the result in cubic centimeters (cc).

Q5: Does this formula work for all engine types?
A: This formula works for most piston engines including inline, V, and flat configurations, but may not apply to rotary or other unconventional engine designs.