L23/30

Main Engine 4-Stroke · Main Engines (4-Stroke)

Technical data from manufacturer or class sources · not yet verified by a person

L23/30 engine seriesCapacity

Diesel fuelMedium

The MAN Energy Solutions L23/30 is a medium-speed four-stroke diesel engine certified by DNV. It is installed in the engine room and used to drive generators for auxiliary power or, through a gearbox, for propulsion on smaller vessels. The designation indicates the L-series in-line engine family.

Manufacturer documentation

Images from manufacturer documentation.

Photos, drawings and page previews from this model’s datasheet or catalog.

The engines are equipped with a radial type MAN NR/S and TCR turbocharger. The rotor, comprising compressor, turbine wheel and shaft, is supported in floating plain bearing bushes.Source: 30 datasheet, p. 317

Applications

Dry cleaning of turbochargers

Features

Ejector principle
Pressure air (working air) at 5-7 bar
Injection time approx. 2 min
Air consumption approx. 5 Nm3/2 min

Photo · 3e8373e73fc8_S11-317 · S. 14

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Source: 30 datasheet, p. 358

Service

Service notes.

What our service work and the manufacturer documentation say about keeping this model running.

Follow the manufacturer's maintenance schedule for injectors, valves, turbocharger and lube oil. Surveyors check running hours, overhaul records, safety devices and alarm functions.

Inspection

Common failures & inspection points

Fuel injector wear causes poor combustion and smoky exhaust
Turbocharger fouling or bearing wear reduces charge air pressure
Cylinder liner and piston ring wear increases oil consumption
Cooling water leaks affect temperatures and heat exchange
Valve seat wear causes loss of compression

Spares

Replacement Parts

Spare parts notes

Keep spare fuel injectors, filters, gaskets, piston rings, a valve set and a turbocharger service kit. Carry cooling water seals and hoses.

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