M 46 DF
Specifications
Overview
The low emission footprint paired with high efficiency and reliability make the M 46 DF an ideal propulsion engine for operation inside and outside of environmental protected areas as well as waters with HFO limitations. Upcoming IMO III emission regulations, selected operation profiles and low diesel fuel costs make the M 46 DF a preferred engine regarding cost of operation.
Engine Specifications
| Speed Range | 500 / 514 rpm 500 / 514 rpm | More |
| Emissions | IMO II in diesel mode / IMO III in gas mode IMO II in diesel mode / IMO III in gas mode | More |
| Aspiration | Turbocharged Turbocharged | More |
| Bore | 18.11 in 460.0 mm | More |
| Stroke | 24.02 in 610.0 mm | More |
| Rotation (from flywheel end) | Counterclockwise / Clockwise Counterclockwise / Clockwise | More |
| Configuration | 6,7,8,9 Cylinder 6,7,8,9 Cylinder | More |
| Swept Volume | 6181.7 in3 101.3 l/cyl | More |
Benefits & Features
Operational Simplicity
Key attributes of the M 46 DF are class leading efficiency and loading capacity as well as the operational simplicity which is supported by a fully automated engine control.
Operation on natural gas with min. methane number of 55 possible at reduced load.
Supports HFO operation according to CIMAC H55/K55 in diesel mode.
Equipment
M 46 DFStandard Equipment
Air Inlet System
- Air intake silencer / filter
Control System
- Load sharing unit
- Modular Alarm Control Protection System (MACS)
- Speed governor
Cooling System
- Electric cooling water preheater
- HT cooling water pump (engine driven)
- 2-stage charge air cooler
Exhaust System
- Exhaust gas expansion joint
- Exhaust gas insulated manifolds
- Turbocharger at flywheel / counter flywheel end
Fuel System
- Fuel circulating pump (electric driven / for MDO/MGO only)
- Fuel indicator filter
- Fuel pressure valve (separate / for MDO/MGO only)
Gas System
- Gas valve unit
Instrumentation
- Control push buttons and lamps
- Emergency stop lever
- Local control panel
- Pressure and temperature indicator
Lube System
- Dry sump
- Lube oil plate cooler (separate)
- Lube oil pump (engine driven)
- Lube oil safety filter
- Lube oil self-cleaning filter
- Pressure regulating valve
Mounting System
- High flexible coupling
- Rigid mounting
Starting System
- Electrical barring device
- Starting air valve
General
- Lifting device (rental)
- Torsional Vibration Calculation (TVC)
M 46 DFOptional Equipment
Air Inlet System
- Air inlet shut-off valve
- Air intake transition piece
- Expansion joint
- Silencer / filter
Control System
- Engine alarm system
- Remote control system
- Remote indicators (start air pressure, engine speed, etc.)
- Starter for electric driven pumps
- 24 DC UPS
Cooling System
- Cooling water preheater steam / thermal oil / electrical
- FW/SW plate cooler
- HT cooling water pump (electric driven)
- LT cooling water pump (electric driven)
- Sea water cooling pump (electric driven)
- Temperature control valve
Exhaust System
- Exhaust gas ventilation module
- Silencer (with or without spark arrester)
Fuel System
- Fuel oil cooler
- HFO final preheater
- HFO pressure regulating valve
- HFO self-cleaning automatic filter
- HFO supply and booster pumps (electrical driven)
- HFO treatment and supply modules
- HFO viscosity control device
- Mixing tank
Gas System
- Gas flowmeter
- LNG vaporizing unit
Lube System
- Lube oil centrifuge
- Lube oil pump (electrical driven)
- Lube oil treatment and combined modules
- Pre-lubricating oil pump (electrical driven)
- Temperature control valve
- Wet sump with dip stick
Mounting System
- Flexible pipe connections
- Resilient mounting
Propulsion System
- Control system
- Thrusters
Starting System
- Starting air compressor
- Starting air receiver
General
- Engine PTO coupling
- PTO alternator
- PTO shaft on counter-flywheel side
- Reduction gear
- Reduction gear PTO coupling