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HiMSEN

5LH25/33

Name: HiMSEN 5LH25/33
Brand: HiMSEN

Hyundai HiMSEN H25/33 (250mm bore) — Marinediesel, Bohrung 250 x Hub 330 mm, 720, 750, 900, 1,000 rpm (multiple configurations for 50 Hz and 60 Hz applications) rpm, 1,440 - 2,970 kW (in-line models); 4,080 - 6,800 kW (V-type models). Brennstoff: Marine Diesel Oil (MDO), Heavy Fuel Oil (HFO), Low-Sulphur Fuel (LSFO), Marine Gas Oil (MGO). Status: Production: Manufactured since 2001; Active: Commercial marine and stationary power generation applications; >10,000 units delivered to 550 clients across 43 countries (as of latest data). Verifiziert, Datenblatt verlinkt.

1425.0 kW

Power

Engine Specifications

Cylinders

250 mm

Bore

330 mm

Stroke

4-stroke

Stroke Type

Components & Design

Component data being added…

Technical Data

Swept volume per cylinder 16.2 dm³

Compression ratio 17:1

Max combustion pressure 200 bar

SFOC (100% MCR) 181.0 g/kWh (diesel operation)

Oil consumption 0.6 g/kWh

6H25/33 dry weight 20.2 metric tons

7H25/33 dry weight 22.5 metric tons

8H25/33 dry weight 24.1 metric tons

6H25/33M rated output 1,440-1,596 kW (depending on RPM)

7H25/33M rated output 1,680-1,995 kW (depending on RPM)

8H25/33M rated output 2,320 kW at 900 RPM

9H25/33M rated output 2,565 kW at 900/1000 RPM; 2,700 kW max

Mean piston speed range 7.9-11.0 m/s

Mean effective pressure 22.2-27.2 bar (varies by configuration)

Emissions compliance IMO Tier II, Tier III (with SCR - Selective Catalytic Reduction)

power kw 1425

rpm 720

fuel type HFO/MDO

configuration L

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Common failures & inspection points

Fuel injection pump sticking and plunger immobilization caused by fuel sludge accumulation or low lubricity in low-sulphur fuels (MGO, LSFO). Drain hole/groove

Inspect fuel pump drain line connection for flow blockage during operation; verify fuel viscosity maintained at 2-14 cSt at engine inlet; check for fuel sludge deposits in drain hole and barrel groove

Excessive carbon and sludge deposits in combustion chamber, exhaust gas ways, and turbocharger when operating on low-sulphur fuels without proper lubricating oi

Inspect turbocharger for deposit buildup on turbine blades; examine exhaust valve surfaces and combustion chamber for carbon deposits; verify L.O (lubricating oil) specification matches fuel sulphur content per manufacturer list

Piston ring wear and bearing wear during scheduled overhauls at 16,000 hours (marine auxiliary) or 12,000 hours (stationary). Main bearing studs carry high load

Monitor piston ring clearance and condition; inspect main bearing cap studs for looseness after each overhaul; verify hydraulic tightening force applied to underslung crankshaft support studs

Fuel viscosity instability and pump wear risk when operating with Marine Gas Oil (MGO) at low ambient temperatures. Viscosity can fall below 2 cSt minimum, caus

Verify MGO temperature maintained at ~22°C to achieve 2 cSt viscosity; check fuel heater function for cold climate operation; test actual fuel viscosity at engine inlet before commissioning

Turbocharger pressure ratio performance degradation. While new enhanced-pressure turbochargers were introduced for Tier III compliance, field history shows moni

Monitor boost pressure trending; inspect turbocharger exhaust seal condition during regular intervals; check compressor and turbine blade condition for foreign object damage; verify turbo oil supply/drain lines clear of sludge

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

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Equipment Model #123448 · ✓ still in production