The 8CM34DF 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.
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 - Engine design based on the higher requirements of crude oil - High efficiency turbocharger - Cylinder liner semi dry, only cooled outside the engine block - Compact module for lower valve drives and injection pump drives with cam followers - Flexible Camshaft Technology optimizes valve operation to maintain low emissions- Super fine honed cylinder liner for low lube oil consumption- Hardened piston ring grooves- Diamond coated piston rings
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
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
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 - Engine design based on the higher requirements of crude oil - High efficiency turbocharger - Cylinder liner semi dry, only cooled outside the engine block - Compact module for lower valve drives and injection pump drives with cam followers - Flexible Camshaft Technology optimizes valve operation to maintain low emissions- Super fine honed cylinder liner for low lube oil consumption- Hardened piston ring grooves- Diamond coated piston rings
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
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
| Minimum Rating | 4800.0 kV·A 3840.0 ekW |
| Maximum Rating | 4800.0 kV·A 3840.0 ekW |
| Emissions | IMO Tier II IMO Tier II |
| Displacement | 20382.0 in³ 334.0 l |
| Bore | 13.4 in 340.0 mm |
| Aspiration | Turbocharged Aftercooler Turbocharged Aftercooler |
| Stroke | 18.1 in 460.0 mm |
| Weight | 187000.0 lb 93.5 ton (US) |
| Engine Control | Electronic Electronic |
| Width | 102.4 in 2600.0 mm |
| Height | 213.1 in 5413.0 mm |
| Length | 425.0 in³ 10784.0 mm |
