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7CM46DF

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Engine Specifications
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Minimum Rating 7640.0 kV·A 6110.0 ekW
Maximum Rating 8190.0 kV·A 6552.0 ekW
Emissions IMO Tier II IMO Tier II

Engine Design

World-class reliability and durability; Medium speed long-stroke engine design; Compact cylinder head design; Nodular cast-iron block with integrated ducts for lubricating oil and charge air; Segmental camshaft design; Capable of operation fuels up to 700 cSt/50°C fuel quality according to CIMAC H55/K55 and Crude Oil; High efficiency turbocharger; Cylinder liner semi-dry, only cooled outside the engine block; Engine control terminal with analog instrumentation in robust cast casing; Connecting rod, oblique split design for easy maintenance; Compact module for lower valve drives and injection pump drives with cam followers; Flexible Camshaft Technology (FCT), optional; Engine design based on the higher requirements of crude oil; Super fine honed cylinder liner for low lube oil consumption; Hardened piston ring grooves; Diamond coated piston rings; Fuel injection and integrated gas admission valve with easy service and maintenance access; Cylinder pressure sensors for highest operational reliability and efficiency, replacing conventional knocking sensor technology; Piston, rings and liners designed for operation on gas and liquid fuels; Optimized engine efficiency in gas and diesel operation; Blow-off valve and waste gate technology for optimized air-fuel ratio control

Ease of installation

Standard modular design allows for ease of installation and reduced complexity; Installation-friendly, due to pumps and filters installed on the engine; Cooling water system with simple plug-in connections; Full range of factory-installed engine attachments allows customization and reduction in installation time

Packaging Concept

Assembled, tested and validated as a package to minimize package vibration and maximize component life

Improved Serviceability

Large inspection openings allow for convenient access to core engine internals for easier serviceability; Core engine components designed for reconditioning and reuse at overhaul; Worldwide dealer network with factory-trained technicians means that parts and support are never out of reach; Simplified parts spectrum by using single-pipe exhaust gas; Split connecting rod design for quick piston removal; Individual camshaft segments for easy removal

7CM46DF Standard Equipment

Engine
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  • Motor-driven barring gear, fitted on engine
  • Reversing contractor and pushbutton switch with cable
  • Electronic speed setting equipment with actuator and speed pick-up
  • Emergency shutdown equipment with pushbutton, separate, for manual emergency stop

7CM46DF Optional Equipment

Monitoring for Unattended Operation
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  • Start/stop logic, controlled by engine automatic start
  • Optional alarm system, cassette type, designed for alarm inputs for the engine including exhaust mean-value monitoring equipment as well as alarm inputs for the propulsion plant
  • Optional group alarm panel for the bridge and with optional and acoustic alarm equipment