sci.compression-ratio Calculator
Calculates internal combustion engine compression ratio CR = V_total/V_clearance and estimates thermal efficiency using the Otto or Diesel cycle formula. Higher CR improves efficiency but increases knock risk in spark-ignition engines — premium gasoline (98 RON) allows CR ≈ 12–14; regular (95 RON) limits CR to ≈ 10–11.
Inputs
- Original Size Kb
- Reference formula or conversion factor shown for context.
- Compressed Size Kb
- Reference formula or conversion factor shown for context.
- Decompression Time Ms
- Duration of the process. Make sure units match the rate inputs (seconds, minutes, or hours).
- Access Time Ms
- Duration of the process. Make sure units match the rate inputs (seconds, minutes, or hours).
Results
- compression ratio
- The computed compression ratio or compressive force. Higher compression ratios store more energy but increase heat and pressure.
- space saving
- Sample size or count used in the calculation.
- time saving from faster transfer (ms)
- The computed duration or time value.
- speedup ratio (net)
- Factor by which the improved approach outperforms the baseline. 2x speedup = half the original time.
- CR = original / compressed size
- Byte size after compression. Divide by original size to get the compression ratio.
- format comparison
- The specific form or variant of the result.
space compressed ratio saving compression