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Mean Piston Speed Calculator — result sheet
Calculate mean piston speed from engine stroke and rotational speed.
Inputs used
Results
Visual chart
Breakdown
Calculation steps
Returned data table
Formula and methodology
Formula: Mean piston speed = 2sN/60, with stroke s in metres and speed N in revolutions per minute.
A piston travels one stroke up and one stroke down per revolution, so the average path speed is twice the stroke multiplied by revolutions per second.
This result follows the calculator's declared inputs, precision, validation boundaries, and model limits.
Input contract
- Stroke — mm; minimum 1.0E-6; maximum 100000
- Engine speed — rpm; minimum 1.0E-6; maximum 10000000
Worked example
| Input | Value |
|---|---|
| Stroke | 86 |
| Engine speed | 3000 |
Mean piston speed is 8.60 m/s, or 516 m/min.
Assumptions and limits
- Stroke is the full crank-to-crank travel and RPM is steady; the result is the mean path speed, not peak instantaneous piston speed.
- Connecting-rod ratio, dwell, acceleration, friction, temperature, lubrication, and engine durability are not modeled.
- The output does not establish a safe engine speed or component limit.
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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