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Table 3
The uncertainties of the remarkable parameters.
| Instrument | Percentage uncertainty (%) | ||
|---|---|---|---|
| Temperature indicator | ± 0.72 | ||
| Speed sensor | ± 0.067 | ||
| Pressure sensor | ± 0.53 | ||
| Fuel flow burette | ± 1.00 | ||
| Air flow rate | ± 0.78 | ||
| Time | ± 0.20 | ||
| Crank angle encoder | ± 1.00 | ||
| Load indicator | ± 0.83 | ||
| Engine power | ± 0.72 | ||
| Fuel consumption | ± 0.48 | ||
| Thermal efficiency | ± 0.86 | ||
| Exhaust gas analyzer | Range | Accuracy | |
| CO | 0–10% | 0.001% | ± 0.75 |
| CO2 | 0–19.99% | 0.001% | ± 0.64 |
| UHC | 0–10000 ppm | 1 ppm | ± 0.98 |
| O2 | 0–25% | 0.01% | ± 0.48 |
| NOX | 0–5000 ppm | 1 ppm | ± 0.92 |
| Smoke intensity (k) | 0–9.99 1/m | 0.01 1/m | ± 0.51 |
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