MAINTENANCE MANUAL OF ENGINE
4
4. Technical Parameters
4.1 Main technical data
KM385BT diesel engine
No.
Rated power/speed (kw/rpm)
Maximum torque/speed
（
N.m/rpm
）
1
19.4/2400
90/1480-1680
2
18.4/2350
86/1480-1680
3
17.7/2350
83/1480-1680
4
14.7/2350
69/1480-1680
4.2. Main technical parameters
1
Model
KM385BT
KM390BT
4L22BT
2
Type
Vertical, water-cooled, 4-stroke
3
Number of cylinders
3
3
4
4
Combustion chamber type
Direct injection
5
Cylinder bore (mm)
85
90
85
6
Piston stroke (mm)
90
100
95
7
Compression ratio
18
18
18
8
Rated
net
power/Rated
speed
(kW/rpm)
18.4/2350
22/2400
25.7/2350
9
Maximum speed at no load (rpm)
≤2580
≤2640
≤2580
10
Minimum steady speed at no load
(rpm)
≤850
≤850
≤850
11
Minimum fuel consumption at max-
imum opening of valve (g/kW.h)
≤248
≤248
≤248
12
Ratio of engine oil consumption to
fuel consumption
≤0.8%
13
Ratio of maximum torque with en-
gine at full load to the torque with
engine at rated operating conditions
≥15%
14
Total piston displacement (L)
1.532
1.909
2.156
15
Maximum fume at full load (Rb)
≤4.5
16
Exhaust gas temperature (°c)
≤650
17
Engine oil pressure (KPa)
200-400
18
Engine oil temperature (°c)
85-95
19
Cooling water temperature (°c)
75-85
20
Firing order of cylinders
1-3-2
1-3-2
1-3-4-2
21
Crankshaft rotation direction (viewed
towards flywheel)
Counter-clockwise
22
Lubrication manner
Pressurization and splashing
23
Start-up manner
Electrical starter
24
Overall dimension (L
×
W
×
H)
567×494×610
662×497×703
757×494×664
25
Emission
GB20891 National II