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The Wartsila 46DF Engine is a high-power dual-fuel medium-speed engine developed by Wartsila for large-scale electricity generation and industrial energy production. The Wartsila 46DF platform is based on the well-known Wartsila 46 engine series and is widely used in large power plants around the world.
The DF (Dual Fuel) technology allows the engine to operate on natural gas as the primary fuel, while also having the ability to run on liquid fuels such as marine diesel oil (MDO) or heavy fuel oil (HFO). This flexibility allows operators to switch between fuels depending on availability, cost, and emission regulations.
Because of its fuel flexibility and high efficiency, the Wartsila 46DF engine has become one of the most commonly used engines in gas-powered power plants, LNG power generation facilities, and large industrial power stations.
On IndustrialMarinePower, power plant operators, equipment suppliers, and engine traders can list Wartsila 46DF engines and spare parts for sale or wanted, including complete generator sets and engine components required for maintenance and overhaul projects.
Dual fuel technology allows an engine to run on two different types of fuel.
In the case of the Wartsila 46DF engine:
Primary Fuel: Natural Gas
Backup Fuel: Diesel fuel (MDO or HFO)
When operating in gas mode, the engine uses a small amount of pilot diesel fuel to ignite the gas-air mixture inside the cylinder. This process reduces fuel consumption and significantly lowers emissions such as NOx, SOx, and CO?.
If gas supply becomes unavailable, the engine can automatically switch to diesel mode, ensuring uninterrupted operation in power generation plants.
The Wartsila 46DF engine family is available in several cylinder configurations used in large generator sets:
Wartsila 6L46DF
Wartsila 8L46DF
Wartsila 9L46DF
Wartsila 12V46DF
Wartsila 16V46DF
Wartsila 18V46DF
These engines are typically installed in multi-engine power plant installations, where several engines operate together to generate electricity.
Typical technical specifications of the Wartsila 46DF engine platform include:
Engine Type: Medium-Speed Dual Fuel Engine
Fuel Type: Natural Gas / Marine Diesel Oil / Heavy Fuel Oil
Bore: 460 mm
Stroke: 580 mm
Engine Speed: approx. 500 – 514 RPM
Approximate power output depending on configuration:
| Engine Model | Approx. Power Output |
|---|---|
| 6L46DF | approx. 5,400 – 6,300 kW |
| 8L46DF | approx. 7,200 – 8,400 kW |
| 9L46DF | approx. 8,100 – 9,450 kW |
| 12V46DF | approx. 10,800 – 12,600 kW |
| 16V46DF | approx. 14,400 – 16,800 kW |
| 18V46DF | approx. 16,200 – 18,900 kW |
These engines are designed for large-scale continuous electricity production.
Wartsila 46DF engines are typically installed as part of large gas-powered generator sets in power plants and require a wide range of components for operation and maintenance.
Common spare parts and systems include:
Gas admission systems
Turbochargers
Fuel injection systems
Cylinder heads
Pistons and piston rings
Cylinder liners
Connecting rods
Crankshaft assemblies
Lubrication oil pumps
Cooling water pumps
Engine control and automation systems
Alternators and generator units
Exhaust gas systems
These parts are frequently traded for power plant maintenance, spare parts supply, and major engine overhaul projects.
IndustrialMarinePower is a global marketplace where power plant operators, energy companies, and equipment suppliers can buy, sell, or post wanted listings for Wartsila engines and spare parts.
Users can list:
Wartsila 46DF engines
dual-fuel generator sets
rebuilt or overhauled engines
Wartsila engine spare parts
surplus power plant equipment
Buyers can also post wanted listings to locate engines or spare parts needed for maintenance and repair operations.
The Wartsila 46DF engine is widely used in:
large gas-powered power plants
LNG-based electricity generation facilities
independent power producer (IPP) projects
industrial energy plants
combined heat and power (CHP) facilities
large distributed power generation systems
Because of its fuel flexibility and high efficiency, the Wartsila 46DF is one of the most widely used dual-fuel engines in modern power plant installations worldwide.
Wartsila 46DF engine or spare parts for sale or wanted – dual fuel power plant engine.
Available configurations may include:
Wartsila 6L46DF
Wartsila 8L46DF
Wartsila 9L46DF
Wartsila 12V46DF
Wartsila 16V46DF
Wartsila 18V46DF
Condition: New / Used / Rebuilt / Overhauled
Application: Gas power plants, LNG power generation facilities, and industrial electricity production.
Complete engines, generator sets, and spare parts such as pistons, cylinder liners, turbochargers, injectors, and DF system components can be listed on IndustrialMarinePower.
Contact the seller for price, engine hours, location, and delivery details.
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