< Back

Financing & Insurance
See our Current Offers
View Product Downloads
Yes, I would like to receive future marketing communications (such as email) from Caterpillar Inc., its affiliates and subsidiaries worldwide and the Caterpillar dealer network. Regardless of whether you decide to receive these marketing communications, Caterpillar will continue to send service/transactional messages, including those that have to do with any accounts that you may have with us.

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 the reliability and lifetime expectations of the M 43 C while maintaining its class leading position regarding operational efficiency. With its clean design, the M 46 DF does allow fast and easy access to the system and components supporting the 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 will meet 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 customers´ demand for a safe and reliable operation at varying engine loads and gas qualities.

Power Rating

Units:
Power Range 10800 - 15440 kW 10800 - 15440 kW Less

Engine Specifications

Speed Range 500 / 514 rpm 500 / 514 rpm Less
Emissions IMO II in diesel mode / IMO III in gas mode IMO II in diesel mode / IMO III in gas mode Less
Aspiration Turbocharged Turbocharged Less
Bore 18.11 in 460.0 mm Less
Stroke 24.02 in 610.0 mm Less
Rotation (from flywheel end) Counterclockwise / Clockwise Counterclockwise / Clockwise Less
Configuration 12,16 Cylinder 12,16 Cylinder Less
Swept Volume 6181.7 in3 101.3 l/cyl. Less

Dimensions & Weights

Minimum Dry Weight 352740.0 lb 160.0 t Less
Minimum Length 387.7 in 9847.0 mm Less
Maximum Length 470.2 in 11943.0 mm Less
Minimum Height 200.7 in 5098.0 mm Less
Maximum Height 201.7 in 5122.0 mm Less
Minimum Width 153.1 in 3890.0 mm Less
Maximum Width 158.5 in 4027.0 mm Less

Operational Simplicity

Service & Maintenance Simplicity

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.

VM 46 DF Standard 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)

VM 46 DF Optional 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 withour 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