エンジン排気量計算機

共有リンク

はじめに

Engine Displacement Calculator — Calculate total engine displacement from bore, stroke, and cylinder count. Enter Bore (mm), Stroke (mm), Number of cylinders to get an instant, accurate result.

計算式

Displacement (cc) = (π/4) × bore(cm)² × stroke(cm) × number of cylinders — the swept volume of all cylinders combined.

ステップごとの説明

Enter the Bore (mm).
Enter the Stroke (mm).
Enter the Number of cylinders.
Click Calculate to see your result instantly.

実例

Example: With Bore (mm) = 86, Stroke (mm) = 86, Number of cylinders = 4, the Engine Displacement Calculator gives a result of 1998.2289.

よくある質問

What are bore and stroke?

Bore is the diameter of each cylinder; stroke is the distance the piston travels up and down inside it.

Does a larger displacement always mean more power?

Not necessarily — displacement sets the theoretical air/fuel capacity per cycle, but actual power also depends on compression, boost, RPM range, and engine efficiency.

What inputs does the Engine Displacement Calculator need?

You'll need to provide: Bore (mm), Stroke (mm), Number of cylinders. All fields use sensible defaults, so you can see a working example immediately and then adjust the values to match your own numbers.

How accurate is the Engine Displacement Calculator?

The Engine Displacement Calculator applies the formula exactly as calculated — Displacement (cc) = (π/4) × bore(cm)² × stroke(cm) × number of cylinders — the swept volume of all cylinders combined. — so results are precise for the inputs you provide. Accuracy depends on entering correct, realistic input values.

Is the Engine Displacement Calculator free to use?

Yes, the Engine Displacement Calculator is completely free, requires no signup, and runs instantly in your browser.