Wärtsilä 50 marine engine

Engine Summary

Engine Information

Engine Family: Wärtsilä 50

Engine Type: Diesel Engine

Description

The Wärtsilä 50 engine family includes both diesel and dual‑fuel variants, offering flexible fuel options and compliance with modern emissions standards. Its robust design, long maintenance intervals, and high continuous‑duty performance make it a preferred choice for heavy marine applications and large power plants.

The Wärtsilä 50 is available in multiple cylinder configurations, typically ranging from 6 to 18 cylinders, depending on the installation requirements and vessel type.

Learn more on the official Wärtsilä website

Compatible Filters

Wärtsilä 50 Air Filter Wärtsilä 50 Lube Oil Filter Element

Specifications

Dimensions & Weight

Compliance

Accessories

Standard Accessories

Baseframe & Mounting System — Heavy‑duty engine baseframe with integrated vibration‑damping mounts.
Charge Air Cooler — High‑efficiency charge‑air cooling unit for optimized combustion.
Turbocharger Unit — Single or dual turbocharger configuration depending on cylinder layout.
Fuel Injection Equipment — Standard high‑pressure fuel pumps and injectors for diesel operation.
Lubrication Oil Filters — Full‑flow lube‑oil filtration system with automatic back‑flushing.
Cooling Water Pumps — HT and LT fresh‑water circulation pumps included as standard.
Jacket Water Heater — Pre‑heating system for stable engine starts and thermal balance.
Starting Air System — Pneumatic air‑start valves and distribution manifold.
Exhaust Gas Manifold — Water‑cooled exhaust manifold for safe thermal management.
Control & Monitoring System — Wärtsilä UNIC engine control unit with integrated safety and monitoring functions.
Crankcase Ventilation System — Closed crankcase ventilation with oil mist separation.
Fuel Oil Pre‑Treatment Interfaces — Standard connections for separators, heaters, and viscosity control.
Cooling Water Expansion Tank — Integrated expansion tank for HT/LT circuits.
Standard Tool Kit — Basic maintenance tools for routine service tasks.
Engine Safety Devices — Overspeed protection, shutdown valves, and temperature/pressure alarms.

Optional Accessories

SCR Emission Reduction Module — Selective Catalytic Reduction system for IMO Tier III compliance in diesel mode.
Exhaust Gas Economizer — Waste‑heat recovery unit for improved thermal efficiency.
Additional Fuel Conditioning Unit — Extra heating, separation, and viscosity‑control modules for heavy fuel operation.
Duplex Fuel Filters — Switchable dual‑filter system for uninterrupted operation during maintenance.
Heavy‑Duty Air Intake Filters — Enhanced filtration for dusty, offshore, or tropical environments.
Extended Lube Oil Separator System — High‑capacity centrifugal separators for longer oil life.
Remote Control & Monitoring Package — Advanced remote diagnostics, data logging, and predictive maintenance.
Redundant Starting Air System — Dual starting‑air circuits for increased reliability.
Alternative Baseframe Options — Reinforced or lightweight mounting frames for special vessel layouts.
Acoustic Insulation Package — Noise‑reduction panels and vibration‑damping components.
Additional Cooling Capacity — Upgraded HT/LT cooling modules for high‑ambient‑temperature regions.
Fuel Changeover System — Automated switching between MDO, HFO, and LNG (DF variant).
Shaft Coupling & Flexible Couplers — Optional couplings for propulsion line integration.
Battery‑Hybrid Integration Kit — Interfaces and control logic for hybrid propulsion systems.
Emergency Shutdown Package — Additional safety valves, sensors, and shutdown logic for critical operations.

Warranty

Additional Notes

Installation Requirements — Engine foundation and alignment must follow Wärtsilä’s approved installation guidelines.
Ambient Conditions — Performance values may vary depending on temperature, humidity, and site altitude.
Fuel Quality Impact — Poor fuel quality can increase wear and reduce efficiency; pre‑treatment systems are recommended.
Load Profile Considerations — Continuous high‑load operation may require adjusted maintenance intervals.
Vibration & Noise Levels — Actual values depend on installation, mounting system, and vessel structure.
Service Accessibility — Adequate clearance must be maintained around the engine for maintenance tasks.
Control System Integration — UNIC control system requires proper electrical and network interfaces.
Exhaust Backpressure Limits — Exhaust system must remain within specified backpressure limits to ensure optimal performance.
Cooling Water Quality — HT/LT circuits require treated water to prevent corrosion and scaling.
Oil Analysis Recommendation — Regular lube‑oil analysis is recommended for predictive maintenance.
Transport & Handling — Engine must be lifted using approved lifting points and certified equipment.
Commissioning Requirements — Commissioning must be performed by authorized Wärtsilä personnel.