6CM20C

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The 6CM20C generator set brings to the offshore industry a legacy of proven reliability and durability in the marine industry. CM offshore generator sets feature standard modular designs, ...

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Engine Specifications

Minimum Rating: 1230kV·A
Maximum Rating: 2050kV·A
Emissions: IMO Tier II
Stroke: 11.81in
Displacement: 3442in³
Bore: 7.87in
Aspiration: Turbocharged-Aftercooled
Engine Control: Electronic
Generator Set Control: Electronic
Weight: 41446lb

Dimensions

Width: 66.14in
Length: 239.1in
Height: 126.7in

Engine Design

World-class reliability and durability - Incorporates years of proven component reliability and - durability in marine industry n Medium speed long-stroke engine design n Ideal configuration for dynamically positioned semisubmersible rigs and drillships n Compact cylinder head design n Nodular cast-iron block with integrated ducts for lubricating oil and charge air n Segmental camshaft design n 25° tilt capability in all directions n Engine design based on the higher requirements of heavy fuel oil n High efficiency turbocharger n Cylinder liner, only cooled outside the engine block n Engine control terminal with analog instrumentation in robust cast casing n Connecting rod, oblique split design n Compact module for lower valve drives and injection pump drives with cam followers n Flexible Camshaft Technology (FCT)

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 ducting

Web Site

For all your petroleum power requirements, visit www.catoilandgasinfo.com

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, and 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

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

Lube oil pressure at full load below danger level - Low lube oil pressure - Lube oil pressure below danger level - Lube oil pressure prelubrication failed - Low fresh water pressure at engine inlet - Fresh water pressure at engine inlet below danger level - Low fresh water pressure in LT circuit - Low starting air pressure - Low control air pressure engine/shutdown air pressure - Low fuel pressure at engine inlet Switches for: - High lube oil temperature at engine inlet - Lube oil temperature at engine inlet above danger level - High water temperature at engine inlet - Water temperature at engine outlet above danger level - High charge-air temperature at engine inlet - Detection of water in charge-air duct - Leak fuel level - Alarm contact for high differential pressure at fuel filter - Alarm contact for high differential pressure at lube oil back flushing filter - Set of thermocouples after each cylinder, before and after turbocharger - Crankcase oil mist detector 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 overspeed, firing speed and minimum speed - Start /stop logic, controlled by engine automatic start (optional) - Service hour counter - Optional Noris 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

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

Air Intake System

Air intake filter, fitted on the turbocharger
Air bottles, separate

Diesel Oil System

Circulating pump fitted on engine
Duplex filter with differential pressure indication

Exhaust System

Turbocharger at free end with transition nozzle (0 degrees from the vertical and away from engine), with compressor cleaning device
Expansion joint separate
Separate silencer and spark arrester, unlagged 35 dB(A)

Fresh Cooling Water System

HT pump, fitted on engine
LT pump, fitted on engine
HT thermostat, not powered and separate
Engine preheating equipment, fitted on base frame

Lubricating Oil System

Plate cooler, fitted on engine
Force pump, fitted on engine
Prelubrication pump, fitted on base frame, electric motor driven
Boll and Kirch automatic backflushing filter, fitted on engine
Pressure control valve, fitted on engine

Connecting 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
Set of bonded rubber rails for resilient mounting of the base frame
Set of flexible pipe connections

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