OceanSphereENGINES
Library› Engine Room› Main Engines (4-Stroke)› Main Engine 4-Stroke› MAN Energy Solutions 35/44DF

35/44DF

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

Technical data from manufacturer or class sources · not yet verified by a person​‌​​‌​‌⁠⁠‍‌‌‌⁠​‌‍‌​‌
350 mmBore
440 mmStroke

The MAN 35/44DF is a medium‑speed, inline (L‑configuration) four‑stroke main engine that can run on LNG, HFO or MGO using dual‑fuel common‑rail technology.

Specifications

Technical data.from datasheet

Every value below comes from the manufacturer datasheet or class-society record on file for this model.

Displacement per cylinder42.3 liters
Power per cylinder @ 750 RPM530 kW (L35/44DF standard); 560 kW (L35/44DF CD)
MEP (Mean Effective Pressure)20.0–20.1 bar
SFOC liquid fuel @ 85% MCR175.5 g/kWh
SFC gas operation7440 kJ/kWh
Dry mass – 6L/7L/8L/9L/10L40.5 / 45.6 / 50.7 / 55.0 / 59.7 tonnes
Methane slip reduction (CD variant)85% vs. industry standard
Emissions complianceIMO Tier II (diesel) / Tier III (gas)
Speed (rpm)720
ConfigurationL
Fuel TypeLNG/HFO/MGO
TechnologyDual-Fuel Common Rail (LNG/HFO/MGO)
📄
Download datasheet (PDF) (415 KB)
Manufacturer documentation

Images from manufacturer documentation.

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

MAN Energy Solutions MAN 35/44DF – Photo (MAN Energy Solutions datasheet S. 1)
Photo · MAN Energy Solutions datasheet · S. 1
MAN Energy Solutions MAN 35/44DF – Photo (man-35-44df-cd_kampagne_16-9)
Photo · man-35-44df-cd_kampagne_16-9
Documentation

Manuals

Need this part?

Request a quote for this model.

Free of charge — send us your request for MAN Energy Solutions equipment. Our team checks it and replies by e-mail.

For marine equipment hardly any maker or authorised dealer will name a price while the vessel is unknown. With the vessel details, availability and price can be settled faster; without them we may have to ask first, which costs a few days. If you are not allowed to name the vessel, a photo of the rating plate is enough — attach it below or send it as a reply to our confirmation e-mail.

Your contact details are not published. No account required.
Related models

Also in Main Engine 4-Stroke.

Other models of the same equipment type, MAN Energy Solutions first.

By manufacturer MAN Energy SolutionsWärtsiläCaterpillarHiMSENMTUVolvo PentaYanmar Power Technology Co., Ltd.HanshinDaihatsuPielstickMaK (Caterpillar)Rolls-Royce / BergenCaterpillar MaKCumminsBaudouinAll manufacturersSpare parts by equipmentNew here? Create a free account Can't read the plate? Try the nameplate scanner All MAN Energy Solutions models More like MAN 35/44DF
More than the data sheet shows

We answer by e-mail, never with an automatic reply.

Tell us what you need for this MAN Energy Solutions 35/44DF — a part, a service call, a second opinion. Are you MAN Energy Solutions? Claim this brand page.

Service engineer? Write the day report for this 35/44DF in OceanSphere Work — photos, hours and parts, as a PDF for the owner. Try it free for 14 days →

Frequently asked

Questions that come up with this equipment.

Is this model's data free?

Yes. Specifications, documents and service notes for this model are readable without an account. An account adds saved searches and requests, nothing is taken away.

Can you find a part for this exact model?

Yes. Tell us the manufacturer, the model and what you need — a person reads every request and replies by e-mail.

The specifications look wrong — what now?

Send us the nameplate or the correct value. We check it against the manufacturer datasheet or class-society record and update the page.