Engine Capacity Calculator

Engine Capacity Formula:

\[ \text{Engine Capacity} = \frac{\pi \times \text{Bore}^2 \times \text{Stroke} \times \text{Number of Cylinders}}{4 \times 1000} \text{ (liters)} \]

Engine Capacity:

Unit Converter ▲

Unit Converter ▼

From:	To:

1. What Is The Formula For Calculating Engine Capacity?

Engine 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 size and potential power output of an engine.

2. How Does The Calculator Work?

The calculator uses the engine capacity formula:

\[ \text{Engine Capacity} = \frac{\pi \times \text{Bore}^2 \times \text{Stroke} \times \text{Number of Cylinders}}{4 \times 1000} \text{ (liters)} \]

Where:

\( \pi \) — Mathematical constant (approximately 3.1416)
\( \text{Bore} \) — Diameter of each cylinder (mm)
\( \text{Stroke} \) — Distance the piston travels (mm)
\( \text{Number of Cylinders} \) — Total cylinders in the engine

Explanation: The formula calculates the volume of a single cylinder (π × bore² × stroke / 4) and multiplies it by the number of cylinders, then converts from cubic millimeters to liters by dividing by 1000.

3. Importance Of Engine Capacity Calculation

Details: Engine capacity is a fundamental specification that affects engine performance, fuel consumption, emissions, and vehicle classification. Larger engines typically produce more power but 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: Why is engine capacity measured in liters?
A: Liters provide a convenient unit for comparing engine sizes across different manufacturers and vehicle types, with 1000 cubic centimeters equaling 1 liter.

Q2: How does engine capacity relate to engine power?
A: Generally, larger engine capacity means more potential power, but actual power output also depends on factors like engine design, compression ratio, and forced induction.

Q3: 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. These dimensions determine the engine's displacement per cylinder.

Q4: Can this formula be used for any engine type?
A: Yes, this formula works for calculating the displacement of both gasoline and diesel engines, regardless of configuration (inline, V-type, flat, etc.).

Q5: How accurate is this calculation?
A: This provides the theoretical displacement. Actual working volume may vary slightly due to manufacturing tolerances and combustion chamber design.