Engine Cylinder Capacity Calculator

Engine Displacement Formula:

\[ Capacity = \frac{\pi \times Bore^2 \times Stroke \times Cylinders}{4 \times 1000} \]

Capacity:

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1. What is Engine Cylinder Capacity?

Engine cylinder capacity, also known as engine displacement, is the total volume of all the cylinders in an engine. It's a key specification that indicates the engine's size and power potential, typically measured in liters or cubic centimeters.

2. How Does the Calculator Work?

The calculator uses the engine displacement formula:

\[ Capacity = \frac{\pi \times Bore^2 \times Stroke \times Cylinders}{4 \times 1000} \]

Where:

\( Bore \) — Cylinder bore diameter (mm)
\( Stroke \) — Piston stroke length (mm)
\( Cylinders \) — Number of cylinders
\( \pi \) — Mathematical constant (approximately 3.14159)

Explanation: The formula calculates the volume of a single cylinder (π × bore² × stroke / 4) and multiplies 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 critical factor in determining an engine's power output, torque characteristics, and fuel consumption. Larger displacement engines generally produce more power but may consume more fuel.

4. Using the Calculator

Tips: Enter bore and stroke measurements 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.

5. Frequently Asked Questions (FAQ)

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

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

Q3: What are common engine displacements?
A: Common displacements range from 1.0L for small economy cars to 6.0L+ for performance and truck engines, with various sizes in between.

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 instead of liters.

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.