Fault Diagnosis of High-Power Tractor Engine Based on Competitive Multiswarm Cooperative Particle Swarm Optimizer Algorithm

Table 1

Parameter information of engine based on SAE J1939 protocol.

	Data name	PGN	Data length (byte)	Resolution	Data range	Offset
Engine management system	Engine load	61433	1	1%	0%–250%	0
	Intake pressure	65270	1	2 kPa	0–500 kPa	0
	Coolant temperature	65262	1	1 C	−40–200 C	−40
	Engine speed	61444	2	0.125 rpm	0–8031.875 rpm	0
	Intake manifold pressure	65149	2	0.1 kPa	0–6425.5 kPa	0
	Intake camshaft position	65235	2	0.1 deg	0–60 deg	0
	Exhaust camshaft position	65236	2	0.1 deg	−30–0 deg	0
	Fuel supply advance angle	65344	2	0.1 deg	0–15 deg	0