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 sol
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)