4
N73B60 Engine - Diagnosis
Technical Data
Technical Data Comparison
N73B60
M73B54
V-angle configuration
12 cyl. V / 60º
12 cyl. V / 60º
Displacement (cm 3)
5972
5379
Bore / Stroke (mm)
89 / 80
79 / 85
Cylinder spacing (mm)
98
91
Crankshaft main bearing diam. (mm)
70
75
Conrod big end diam. (mm)
54
48
Power output (kW/HP)
at engine speed (rpm)
320 / 438
6000
240 / 326
5000
Torque (Nm)
at engine speed (rpm)
600
3950
490
3900
Idle speed (rpm)
Maximum engine speed (rpm)
550
6500
600
6500
Compression ratio
11.3 : 1
10 : 1
Valves per cylinder
4
2
Intake valve diam. (mm)
35
42
Exhaust valve diam. (mm)
29
36
Intake valve lift (mm)
0.3 - 9.85
10.3
Exhaust valve lift (mm)
9.7
10.3
Engine weight (kg)
280
-
Fuel requirement
Premium unleaded
Premium unleaded
Knock control
Yes
Yes
Injection pressure (bar)
50 - 120
3.5
Digital Motor Electronics (ECM)
2x MED 9.2.1 & Valvetronic ECU
with 2x HDEV ECU
2x ME 5.2 & EML IIIs
Emission compliance level
LEV
LEV
Firing order
1-7-5-11-3-9-6-12-2-8-4-10
1-7-5-11-3-9-6-12-2-8-4-10
Fuel consumption savings compared
with M73
12 %
-
Maxmimum regulated vehicle speed
(km/h / mph)
250 / 155
250 / 155
