The Engine Volume Calculator determines the total displacement or swept volume of an internal combustion engine. This value represents the volume swept by all pistons inside the cylinders from the top to the bottom of the stroke. It’s a critical specification used in engine classification, performance tuning, fuel 效率 studies, and emissions analysis. The calculator belongs to the Automotive Engineering and Engine Specification Calculator 类别。
Displacement directly influences torque, 功率, and regulatory classification. This calculator helps engineers, mechanics, students, and enthusiasts ensure accurate engine 测量 跨各种应用程序。
Formula of Engine Volume Calculator
详细分类：
- V = Total engine volume or displacement (in cubic centimeters – cc or liters)
- D = Bore diameter of each cylinder (in centimeters or inches)
- S = Stroke length of the piston (in the same unit as bore)
- N = Number of cylinders in the engine
- 圆周率 / 4 ≈ 0.7854, used to convert diameter to cross-sectional area of a circle
Ensure that units are consistent (either all in inches or all in centimeters) before using the formula. The output can be converted into liters (1,000 cc = 1 L) as needed.
快速参考表
Below is a helpful table showing estimated engine volumes based on bore, stroke, and cylinder count combinations:
| Bore (cm) | Stroke (cm) | 气缸 | Engine Volume (cc) |
|---|---|---|---|
| 7.5 | 8.0 | 4 | 1,413 |
| 8.0 | 8.5 | 4 | 1,709 |
| 9.0 | 9.0 | 6 | 3,431 |
| 9.5 | 9.5 | 8 | 5,370 |
| 10.0 | 10.0 | 12 | 9,424 |
Use this table to make quick estimates without full calculation, especially when comparing engine specs.
Example of Engine Volume Calculator
Let’s calculate the engine volume for a 4-cylinder engine with the following specs:
- 缸径 = 8.2厘米
- 行程 = 9.0厘米
- 气缸 = 4
步骤1：
应用公式：
V = 0.7854 × (8.2)² × 9.0 × 4
V = 0.7854 × 67.24 × 9.0 × 4 ≈ 0.7854 × 2419.68 ≈ 1,900.1
所以， 发动机排量 约 1900 CC or 1.9升.
最常见的常见问题解答
Engine displacement refers to the total volume swept by all pistons in the engine’s cylinders. It’s a 键 factor in determining engine size, output, and classification.
Yes. Generally, larger displacement allows for more air and fuel per cycle, resulting in more torque and potentially higher 马力. However, design and tuning also play major roles.
Yes. As long as bore, stroke, and cylinder count are known, this calculator can be used for gasoline, diesel, and motorcycle engines alike.