Table 2: The accuracies of the measurements and the uncertainties in the calculated results.

MeasurementsAccuracy

Load±0.1 N.m
Speed±3/min
Temperatures±1.6°C
Cylinder pressure±2 bars
Crank angle±0.05°V
Fuel volumetric rate±0.5%
Air flow rate±1.0%
HC±10 ppm
CO±50 ppm
NO±100 ppm
Particulates±10 ng/s

Calculated resultsUncertainty range (%)
Power0.4–1.9
BSFC0.6–2.0
BTE0.7–2.0