Operation and Maintenance Manual for WP2.1C/WP3.9C Series Marine Diesel
1
Section I Main Specifications and Engine Data
1.1 Specifications of the Engines
Model WP2.1C27E1 WP2.1C35E1
Type
Water-cooled, vertical, in-line, four-stroke
Apiration
Natural aspiration
No of cylinder - Bore×Stroke mm
4-85×92
Total displacement L 2.09
Compression ratio 18 ：1
Mean effective pressure kPa
574.6 553.4
Mean piston speed m/s
6.13 8.28
Rated output kW
20 26
Rated Speed r/min 2000 2700
Fuel consumption at rated power
[g/kW
·
h）]
≤245
Oil consumption % ≤0.5
Speed droop % ≤5
Low idle speed r/min 800～850
Firing order 1-3-4-2
Lubricating method
Combination of pressure and splash
Cooling method Pressurized water-cooling
Starting method
Electric
Dry weight kg
375
Overall dimensions
L(mm) 1084
W(mm)
718
H(mm) 890
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