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Piston Engine Displacement Calculator — result sheet
Calculate swept engine displacement from cylinder bore, stroke, and cylinder count.
Inputs used
Results
Visual chart
Breakdown
Calculation steps
Returned data table
Formula and methodology
Formula: V = (π/4)b²sN.
The swept volume of one cylindrical bore is multiplied by stroke and the number of cylinders, with results shown in cubic centimetres and litres.
This result follows the calculator's declared inputs, precision, validation boundaries, and model limits.
Input contract
- Bore diameter — mm; minimum 1.0E-6; maximum 100000
- Stroke — mm; minimum 1.0E-6; maximum 100000
- Number of cylinders — minimum 1; maximum 1000
Worked example
| Input | Value |
|---|---|
| Bore diameter | 86 |
| Stroke | 86 |
| Number of cylinders | 4 |
Swept displacement is about 1,998.2 cm³, or 2.0 L.
Assumptions and limits
- Bore and stroke describe circular cylinders and are entered in millimetres; the result is geometric swept volume only.
- Clearance volume, compression ratio, piston crown shape, valve pockets, and manufacturing tolerances are not modeled.
- Displacement does not predict power, fuel economy, emissions, or legal vehicle classification.
Calculator note
Source and methodology
Use the official WorldCalculate methodology policy for the source, formula, precision, and boundary standards behind this calculator.
Planning estimate, not financial, medical, legal, or professional advice. © WorldCalculate — reuse with attribution. Built and curated by Hassan ALRowaie.
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