Examples
Examples
Try the starting example
- Measured/nominal cylinder bore (mm)
- 86
- Stroke (mm)
- 86
- Identical cylinder count
- 4
- Swept volume per cylinder (mL)
- 499.557214
- Total nominal swept displacement (mL)
- 1,998.228857
- Total nominal swept displacement (L)
- 1.998229
Try another scenario
- Measured/nominal cylinder bore (mm)
- 86
- Stroke (mm)
- 86
- Identical cylinder count
- 6
- Swept volume per cylinder (mL)
- 499.557214
- Total nominal swept displacement (mL)
- 2,997.343285
- Total nominal swept displacement (L)
- 2.997343
Calculation method
Calculation method
Swept volume per cylinder (mL)
pi×bore²×stroke/4/1000, converting cubic mm to mL.
Total nominal swept displacement (mL)
Per-cylinder swept volume×identical cylinder count.
Total nominal swept displacement (L)
Total mL/1000; combustion chamber volume is excluded.
Symbols and units
- a
- Measured/nominal cylinder bore (mm)
- b
- Stroke (mm)
- c
- Identical cylinder count
Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.
Assumptions & limits
Assumptions & limits
- Ideal circular-bore swept-volume geometry for identical cylinders. It is not engine power, actual measured displacement certification, compression ratio or a modification recommendation.
Are these inputs private?
These calculations run in your browser. A shared link contains the values you choose to share. Only questions submitted to the separate AI finder are sent to OpenAI.
Further reading
OpenStax: ratios, unit rates and supplied measurement arithmetic ↗
Background reading; this does not imply endorsement or independent review of SumFizz.