Overview
The 6CM34DF generator set is based on the successful CM32C medium speed engine. Caterpillar Motoren designed the CM34DF to meet and exceed the CM32C reliability and lifetime expectations, while maintaining its class leading position regarding operational efficiency and reliability. The CM34DF is an ideal solution as main power for offshore production platforms and top sides. The CM34DF clean design allows fast and easy access to system and components, supporting the operation, service and maintenance simplicity. Designed to operate on gaseous fuel with methane numbers down to MN 50 and liquid fuels as MGO, MDO, heavy fuels and crude oil. The CM34DF is certified to IMO Tier II standards and meets proposed IMO Tier III emissions levels while operating in gas mode. Care and attention was paid to customers demand for a safe and reliable operation at varying engine loads and gas qualities.
Specifications
| Minimum Rating | 3600 kV·A |
| Maximum Rating | 3600 kV·A |
| Emissions | IMO Tier II |
| Minimum Rating | 2880 ekW |
| Maximum Rating | 2880 ekW |
| Emissions | IMO Tier II |
Benefits & Features
Ease of Installation
Standard modular design allows for ease of installation and reduced complexity - Low installation cost with auxiliary systems mounted on engine - Cooling water system with simple plug-in connections
Improved Serviceability
Large inspection openings for convenient access to core engine components - 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 - Segmental camshaft design - Split connecting rod design for quick piston removal -Individual camshaft segments for easy removal
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Specifications
| Minimum Rating | 3600 kV·A |
| Maximum Rating | 3600 kV·A |
| Emissions | IMO Tier II |
| Width | 103.9 in |
| Weight | 128000 lb |
| Displacement | 15317 in³ |
| Height | 207.7 in |
| Speed - 60 Hz | 720 rpm |
| Aspiration | Turbocharged Aftercooler |
| Length | 359.4 in |
| Stroke | 18.1 in |
| Speed - 50 Hz | 750 rpm |
| Engine Control | Electronic |
| Bore | 13.39 in |
| Minimum Rating | 2880 ekW |
| Maximum Rating | 2880 ekW |
| Emissions | IMO Tier II |
| Width | 2639 mm |
| Weight | 64 t |
| Displacement | 251 l |
| Height | 5275 mm |
| Speed - 60 Hz | 720 rpm |
| Aspiration | Turbocharged Aftercooler |
| Length | 9129 mm |
| Stroke | 460 mm |
| Speed - 50 Hz | 750 rpm |
| Engine Control | Electronic |
| Bore | 340 mm |
Benefits & Features
Ease of Installation
Standard modular design allows for ease of installation and reduced complexity - Low installation cost with auxiliary systems mounted on engine - Cooling water system with simple plug-in connections
Improved Serviceability
Large inspection openings for convenient access to core engine components - 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 - Segmental camshaft design - Split connecting rod design for quick piston removal -Individual camshaft segments for easy removal
Standard Equipment
- Engine
- Motor-driven barring gear, fitted on engine
- Emergency shutdown equipment with pushbutton for manual emergency stop
- Fuel injector 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
- Turbo Charger
- Optimized engine efficiency in gas and diesel operation
- Blow-off valve and waste gate technology for optimized air-fuel ratio control
- 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.
- Exhaust System
- Front-mounted 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
- Fresh Cooling Water System
- HT pump, fitted on engine
- LT pump, separate, vertical design, electric motor driven
- HT thermostat, remote-mounted, electric controlled
- Cooling water preheating equipment, fitted on base frame
- Lubricating Oil System
- Plate cooler, fitted on engine
- Force pump, fitted on engine
- Pre-lubrication pump, fitted on base frame, electric motor driven
- Automatic back-flushing filter
- Duplex filter with differential pressure indication, fitted on engine
- Pressure control valve, fitted on engine
- Thermostat, remote-mounted, electric controlled
- Connections
- 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 connections
- Instrumentation
- Gauge board with liquid-dampened 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
- Monitoring
- Manual control on engine, including: control panel with start/stop key, speed setting device, mechanical shutdown device, changeover of control functions from engine to remote control
- Starting solenoid valve on engine, 24 V DC
- Separate electronic speed governor
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