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Daihatsu

5LDK-20e-GS-60Hz

Daihatsu Diesel DK-20 Marine Auxiliary Series — Marinediesel, Bohrung 200 x Hub 300 mm, 720, 750, 900 rpm, 400-1020 kW (3DK-20: 450 kW / 5DK-20: 560-800 kW / 6DK-20: 760 kW / 8DK-20: 1020 kW). Brennstoff: Marine Diesel Oil (MDO) up to 700 mm²/s at 50°C; Heavy Fuel Oil (HFO). Status: Production/Active service in marine auxiliary power applications. Verifiziert, Datenblatt verlinkt.

900.0 kW
Power

Engine Specifications

5
Cylinders
200 mm
Bore
300 mm
Stroke
4-stroke
Stroke Type

Components & Design

Component data being added…

Technical Data

Type Vertical water-cooling direct injection 4-cycle diesel engine
Mean Effective Pressure (Pme) 2.16-2.45 MPa
Piston Speed @ 900 rpm 9.00 m/sec
Piston Speed @ 720 rpm 7.20 m/sec
6DK-20e Dry Weight 16.0 tonnes (16000 kg)
5DK-20e Dry Weight 13.5 tonnes (13500 kg)
8DK-20e Dry Weight 22.0 tonnes (22000 kg)
Displacement (6-cylinder calculated) 56.5 liters (56500 cc)
Cooling System Jacket cooling with fresh water and sea water cooler option
Fuel Injection Direct injection with nozzle cooling system (critical for HFO operation)
Starting System Direct electric start (6DK+); Air motor start (5DK)
power kw 900
rpm 900
fuel type HFO/MDO
configuration L
genset kw 855
genset kva 1069
frequency hz 60

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Common failures & inspection points

Fuel injection nozzle corrosion from improper cooling temperature control. Low temperatures cause sulfated corrosion on nozzle tip; high temperatures cause carb
www.dieselduck.info/forum/viewtopic...
Vibration and fatigue failure of fuel oil piping due to high-pressure oscillations; documented technical bulletin countermeasures exist
Cylinder ring groove wear and chromium plating degradation requiring renewal; chromium-plated piston rings must be replaced when original surface appears worn
O-ring degradation in cooling water connecting pipes leading to sealing failures and coolant leakage; improved O-ring specifications documented
Piston ring seal degradation causing insufficient compression pressure; non-airtight piston rings require maintenance or replacement
www.scribd.com/document/718173221/D...

Type-general inspection and maintenance points for this equipment category — not model-specific.

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Equipment Model #124559 · ✓ still in production