7CM46DF
Specifications
Benefits & Features
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
Equipment
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)
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