Table 5.

Analyses of uncertainty for various variables.

Parameter	Measurement Range	Level of Accuracy	uncertainty
Engine speed	1–3250	±0.2	±0.5
Brake thermal	–	±1Nm	±1.3
Brake powr	–	±0.03 KW	±0.5
Brake thermal efficiency	–	±0.5%	±1.7
Carbon monoxide	0–10%	±0.06%	±0.6
Hydrocarbon	0–5000 ppm	±12	±0.65
Carbon dioxide	0–16%	±0.5	±2.53
Nitric oxide*2	0–1500 ppm	±10 ppm	±0.65
Carbon monoxide	0–15%	±0.06	±0.4