Table 4 Uncertainty analysis.

From: Statistical and machine learning analysis of diesel engines fueled with Moringa oleifera biodiesel doped with 1-hexanol and Zr2O3 nanoparticles

S no

Instrument

Accuracy

Range

Uncertainty %

1

Smoke meter

 ± 0.15

0–14 BSU

2.1

2

Stopwatch

 ± 0.5 s

-

0.34

3

Manometer

 ± 2.5 mm

0–400 mm

1.13

4

Tachometer

 ± 12 rpm

0–12,000 rev/min

0.111

5

Exhaust gas Temperature

 ± 2.5 ◦C

0–910 ◦C

0.14

6

Encoder of the Crank angle

 ± 2◦deg

210–410 deg

0.15

7

Loading indicator

 ± 2.1 kg

0–190 kg

0.22

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