Overview

The MTU Series 8000 diesel engines are designed specifically for high-power marine applications including fast commercial vessels with large payloads and military ships. These engines emphasize reliability, ecological design, low operating costs, and ease of installation due to their compact and integrated system.

Key Benefits

• Economy: Low life-cycle costs, long service intervals, competitive pricing, and straightforward maintenance.
• Engine Characteristics: High power output and unrestricted low-load operation.
• Environmental Performance: Low fuel consumption, reduced exhaust emissions, and low noise levels.
• Service: 24/7 worldwide support.

Technical Features and Components

Crankcase

Constructed from ductile cast iron with integral intake-air channels and a centrally positioned camshaft. Features include hydraulically tensioned pins for main bearing caps and a large inspection cover.

• Exceptional rigidity and strong crankshaft support.
• Main bearings replaceable without engine removal.

Cooling System

Split-circuit cooling ensures engine components contact only coolant, optimizing coolant, oil, and intake-air temperatures under all conditions.

Cylinder Heads

Made of ductile cast iron with annular coolant channels, two inlet and two exhaust valves per cylinder, cooled valve inserts, valve rotation mechanisms, and optimized ports.

• Designed for high ignition pressures.
• Replaceable seat inserts reduce maintenance costs.
• Lower black smoke and NOx emissions.

Pistons

Composite design with forged steel crown and steel skirt, oil injection cooling, two compression rings, one oil scraper ring, and large-diameter gudgeon pin.

• Supports high ignition pressures.
• Low oil consumption and emissions.

Service Block on Auxiliary PTO End

All main auxiliary systems are located here for simplified servicing and fewer ship system interfaces.

Fuel Injection System

Common-rail technology with operating-status based injection control optimizes injection timing, pressure, and flow rate without mechanical adjustments.

• Virtually no exhaust blackening.
• Low fuel consumption across all engine speeds.

Oil Filtration

Main oil-flow filter with constant recirculation and bypass filtration via oil centrifuges ensures consistent filter grade, environmental friendliness, and low maintenance.

Power Unit

Modular assembly including cylinder head, spacer, liner, piston, and connecting rod, bolted to the crankcase. Separates sealing and power transmission functions.

• High stability and low blow-by.
• Long service intervals and ease of maintenance.

Technical Data

Note: Power ratings are defined according to DIN/ISO 3046 at intake air temperature 25 °C and sea-water temperature 25 °C, with rated power available up to intake air temperature 45 °C and sea-water temperature 32 °C.

Typical Applications

• Fast yachts
• Frigates
• Corvettes
• Ferries
• Commercial vessels
• Catamarans

Control and Monitoring System

The engine and gearbox management system integrates safety and testing functions with interfaces for remote control and monitoring systems. It features redundant backup and is maintenance-free.

Load Profiles and Time Between Overhaul (TBO)

Graphs illustrate standard load profiles for application groups 1B and 1DS, with TBO values of 24,000 hours for M91 and M71/M71L models, and 32,000 hours for M71R.

Contact Information

MTU Friedrichshafen GmbH (Europe, Middle East, Africa, Latin America)
Phone: +49 7541 90 7003
Email: [email protected]

MTU Asia Pte. Ltd. (Asia, Australia, Pacific)
Phone: +65 6861 5922
Email: [email protected]

MTU Detroit Diesel, Inc. (USA, Canada, Mexico)
Phone: +1 313 592 7806
Email: [email protected]