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Daihatsu

6/8 DK(M)-28(e)(F)(L)

Daihatsu Diesel DK series (DK-26 / DK-28 medium-speed marine diesel engines) — Marinediesel, Bohrung 260 (DK-26), 280 (DK-28) x Hub 380 (DK-26), 390 (DK-28) mm, 720, 750 rpm, DK-26: 1280-1681 kW (5DK-26: ~1280 kW, 6DK-26: 1681 kW at 720/750 rpm); DK-28: 1915-2800 kW (6DK-28: ~1600 kW, 8DK-28e: 1915-2800 kW at 720/750 rpm). Brennstoff: MDO (Marine Diesel Oil), HFO (Heavy Fuel Oil) up to 700 mm²/s @ 50°C. Status: Production status: Active/Historic - DK series was a mainstay marine diesel engine family through at least 2010s; current production details not publicly accessible. Verifiziert, Datenblatt verlinkt.

Per Hersteller-Datenblatt
Capacity
HFO / VLSFO / MGO
Medium

Components & Design

Component data being added…

Technical Data

Specific Fuel Consumption (DK-28) 178-190 g/kWh
Bore Mean Effective Pressure (Pme) DK-26: 2.11-2.43 MPa; DK-28: 2.33-2.43 MPa
Piston Speed (720 rpm) DK-26: 9.12 m/sec; DK-28: 9.36 m/sec
Weight (8DK-28e approx.) 46 tonnes / 9500-13500 kg depending on variant
Design Type 4-stroke, turbocharged, intercooled, direct injection
Emission Standard IMO Tier II/III
Lubrication Forced system with water-cooled exhaust manifold

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Common failures & inspection points

Connecting rod bolts hitting the frame (three-piece connecting rod models)
www.daihatsu.cc/bulletins.htm
Ring groove wear requiring chromium plating of No. 1 and 2 ring grooves (5DK-26, 6DK-26 models); also alteration of top ring width needed
www.daihatsu.cc/bulletinsDK.htm
Fuel injection pump tappet adjustment screw loosening (DK-28, DK-32)
www.daihatsu.cc/bulletins.htm
Pulse absorber degradation requiring regular renewal for reliability (DK-20, DK-26, DK-28)
www.daihatsu.cc/bulletinsDK.htm
Crankshaft journal wear in high-service applications; on-site grinding to 0.50 mm undersize documented as restoration method
injegov.gr/on-site-crankshaft-grind...

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

Service & Maintenance

Wartung per Hersteller-Handbuch und Klassifikationsgesellschafts-Anforderungen. Jährliche Inspektion bei Class Survey. Ersatzteile per Herstellerangabe bevorraten.

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Replacement Parts

Ersatzteile über Daihatsu Diesel Mfg. Co., Ltd. Moriyama Division oder zugelassene Vertriebspartner. Lead time: 2-6 Wochen.
Equipment Model #29865 · ✓ still in production