Capacity Calculator Engine

Engine Capacity Formula:

\[ Engine\ Capacity = Bore \times Bore \times Stroke \times Cyls \times 0.7854 / 1000 \]

Bore:

Stroke:

Number of Cylinders:

Output Unit:

Engine Capacity:

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1. What is Engine Capacity?

Engine capacity, also known as engine displacement, is the total volume of all the cylinders in an engine. It's a key measurement that indicates the size and potential power output of an engine, typically measured in cubic inches (ci) or liters.

2. How Does the Calculator Work?

The calculator uses the engine capacity formula:

\[ Engine\ Capacity = Bore \times Bore \times Stroke \times Cyls \times 0.7854 / 1000 \]

Where:

\( Bore \) — Diameter of each cylinder (mm)
\( Stroke \) — Distance the piston travels (mm)
\( Cyls \) — Number of cylinders
\( 0.7854 \) — Constant (π/4)
\( /1000 \) — Conversion factor to cubic centimeters

Explanation: The formula calculates the volume of a single cylinder (π × bore²/4 × stroke) and multiplies by the number of cylinders to get total displacement.

3. Importance of Engine Capacity

Details: Engine capacity is a primary factor in determining an engine's power output, fuel consumption, and emissions. Larger engines typically produce more power but consume more fuel.

4. Using the Calculator

Tips: Enter bore and stroke measurements in millimeters, select the number of cylinders, and choose your preferred output unit (cubic inches or liters). All values must be valid positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between cubic inches and liters?
A: Cubic inches (ci) is the imperial measurement, while liters is the metric measurement. 1 liter equals approximately 61 cubic inches.

Q2: How does engine capacity relate to power output?
A: Generally, larger engine capacity means more potential power, but efficiency, design, and technology also significantly impact actual power output.

Q3: Why is engine capacity important for vehicle classification?
A: Many regions use engine capacity to determine vehicle taxes, insurance rates, and regulatory classifications.

Q4: Can two engines with the same capacity have different performance?
A: Yes, factors like compression ratio, forced induction, valve timing, and engine design can cause significant performance differences.

Q5: What is a typical engine capacity range?
A: Modern passenger cars typically range from 1.0 to 6.0 liters (61-366 ci), with motorcycles and small vehicles at the lower end and performance vehicles at the higher end.