7CM46DF

Specifications

Benefits & Features

Equipment

7CM46DF

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US
Metric

Engine Specifications

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

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

Engine Indicators

Gauge board with set liquid damped pressure gauges for: fuel, lubricating oil, fresh water, starting air, charge air

On-engine thermometers for fuel, lubricating oil, fresh water and charge air

Electric remote speed indicator

Turbocharger and remote speed indicator

Exhaust gas temperature indicator

Control System

Manual control on engine, including: control panel with start/stop key, speed setting device, mechanical shutdown device, change over of control functions from engine to remote control

Starting solenoid valve on engine, 24 V DC

Separate electronic speed governor

Monitoring for Unattended Operation

Pressure switches, mounted on engine

Control Cabinet with housings for wall mounting, including: Protection equipment designed for automatic and manual stop input signals, starting interlock input signals, monitoring for the wire break of the input signal units and the emergency shutdown solenoid / Speed recording system for over speed, firing speed and minimum speed / Service hour counter

Starting Air System

Separate non-return valve for the starting air pipe to the engine

Air Inlet System

Air intake filter, separate

Gas System

Double-walled gas piping to support an inherently safe engine room concept

Leakage detection

Gas valve unit

Segmented gas detection system on request

Micro pilot fuel injection system

Gear driven high pressure fuel pump and filter system with easy service access

Reliability combined with service and maintenance simplicity, through individual ignition fuel injector and “in-cylinder head” integrated ignition fuel return pipes

Fuel System

Circulating pump, separate, electric motor driven

Duplex filter with differential pressure indication

Exhaust System

Turbocharger at free end with transition nozzle (0 degree from the vertical and away from engine), with compressor cleaning device

Expansion joint separate

Cooling System

HT pump, separate on module, vertical design, electric motor driven

LT pump, separate on module, vertical design, electric motor driven

HT thermostat, not powered and separate on module

Engine preheating equipment, fitted on base frame

Lube System

Plate cooler, separate on module

Force pump, fitted on engine

Pre-Lubrication pump, separate on module, electric motor driven

Automatic back flushing filter, fitted on engine

Duplex filter with differential pressure indication, separate on module

Pressure control valve, fitted on engine

Thermostats, not powered, separate on module

Connection Parts-Engine

Set of connecting parts between flange coupling and flywheel

Flexible flange coupling between engine and generator

Base frame with flywheel guard and incorporating lube oil sump tank, for engine and generator

Mounting of engine and generator on the base frame

Set of bonded rubber rails for resilient mounting of the base frame

Set of flexible pipe connection

Tools

Set of tools for the engine including hydraulic tightening tools and nozzle tester

Set of tools for turbocharger

Inside micrometer for cylinder liners

Ruler for cylinder liner

Spare Parts

Set of engine spare parts for unrestricted operation

Set of spare flexible pipe connections

7CM46DF Optional Equipment

Monitoring for Unattended Operation

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

Starting Air System

Air bottle, separate

Exhaust System

Separate silencer and spark arrester, unlagged 35 dB(A)

7CM46DF

Engine Design

Ease of installation

Packaging Concept

Improved Serviceability

7CM46DF Standard Equipment

7CM46DF Optional Equipment

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