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Overview

Based on the successful M 43 C MaK medium speed engine, the M 46 DF was designed by Caterpillar Motoren, Kiel, to meet and exceed reliability and lifetime expectations of its predecessor, while maintaining its class leading position regarding operational efficiency. With its clean design, the M 46 DF allows a fast and easy access to the system and components, supporting operation, service and maintenance simplicity MaK products are known for. Designed to operate on gaseous- as well as liquid (MDO HFO) fuels, the M 46 DF meets IMO III emission limits while operating in gas mode and injecting a small amount of ignition fuel to control combustion. Attention was paid to the customersĀ“ demand for a safe and reliable operation at varying engine loads and gas qualities.

Generator Set Specifications

Units:
Minimum Rating 5179 kWe (6480 kVA) 5179 kWe (6480 kVA) Less
Maximum Rating 8329 kWe (10422 kVA) 8329 kWe (10422 kVA) Less

Engine Specification

Configuration 6,7,8,9 Cylinder 6,7,8,9 Cylinder Less

Engine Specifications

Bore 16.93 in 460.0 mm Less
Stroke 24.02 in 610.0 mm Less
Swept Volume 5406.704 in3 88.6 l/cyl. Less

Generator Set Configurations

Emissions/Fuel Strategy IMO II in diesel mode, IMO III in gas mode IMO II in diesel mode, IMO III in gas mode Less

Generator Set Dimensions and Weights, dependent on generator type

Weight 178 t - 240 t (392422 lbs - 529109 lbs) 178 t - 240 t (392422 lbs - 529109 lbs) Less
Length 12202 mm - 14459 mm (480.4 in - 569.3 in) 12202 mm - 14459 mm (480.4 in - 569.3 in) Less
Width 3400 mm (133.9 in) 3400 mm (133.9 in) Less
Height 6278 mm - 6649 mm (247.2 in - 261.8 in) 6278 mm - 6649 mm (247.2 in - 261.8 in) Less

Class-leading operational reliability

Operational simplicity

Low emission footprint

High efficiency

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 expantion joint
  • Exhaust gas insulated manifolds
  • Turbocharger at flywheel / counter-flywheel end

Gas System
  • Gas valve unit

Fuel System
  • Fuel circulating pump (electric driven / for MDO/MGO only)
  • Fuel indicator filter
  • Fuel pressure valve (separate / for MDO/MGO only)

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 flexibile coupling
  • Rigid mounting

Starting System
  • Electrical barring device
  • Starting air valve

General
  • 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
  • CW piping for generator cooling on base frame
  • CW piping for lubricating oil cooler on base frame
  • 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 system

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
  • Double resilient mounting
  • Flexible pipe connections
  • Resilient mounting

Starting System
  • Starting air compressor
  • Starting air receiver

Propulsion System
  • Control system
  • Thrusters

General
  • Engine PTO coupling
  • Flywheel cover
  • PTO alternator
  • PTO shaft on counter-flywheel side
  • Reduction gear
  • Reduction geat PTO coupling