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16V34DF

Main Engine 4-Stroke · Main Engines (4-Stroke)

Technical data from manufacturer or class sources · not yet verified by a person​​‍‌‍​​⁠‌‍⁠⁠‌‌‌⁠‌​‌‍
8,000 kWPower
16Cylinders
340 mmBore
400 mmStroke
750 rpmMCR RPM
11606Dimensions

Operating on the lean burn principle to reduce peak temperatures and lower NOx emissions, the Wärtsilä 16V34DF is a versatile multi-fuel engine generating set that ensures seamless switching between different fuels. This flexibility allows operators to maintain energy security even when faced with price instability or supply challenges. The 16V34DF can run on natural gas or any liquid fuel, including heavy fuel oil (HFO), and meets stringent emission limits with exhaust gas after treatment. With a rated electrical power of 7830 kW at 50 Hz and 7491 kW at 60 Hz, the 16V34DF delivers high efficiency, reaching up to 48.6% in gas mode and 45.8% in HFO mode. The engine is based on the well-proven Wärtsilä 32 engine, known for its reliability since the mid-1990s. It can achieve full load within just two minutes of a fast start, ensuring rapid response to grid demands. With more than 1,000 generating sets delivered, Wärtsilä’s commitment to lifecycle support guarantees the performance and efficiency of the 16V34DF.

Specifications

Technical data.from datasheet

Every value below comes from the manufacturer datasheet or class-society record on file for this model.

Power per cylinder (main engine 34DF)500 kW @ 750 rpm
Power per cylinder (auxiliary 34DF)520 kW @ 720-750 rpm
Mean effective pressure (main)20.0-19.8 bar
Piston speed9.6-10.0 m/s
Compression ratio (16V/20V)12.6:1
Engine type4-stroke, turbocharged intercooled non-reversible
Swept volume per cylinder36.3 dm³
34DF Max output (16V main)8000 kW
34DF/34SG Max output (20V genset)9800 kW
34SG designSpark-ignited, lean-burn, pre-chamber
20V34SG dimensionsL:12.7m × W:3.3m × H:4.65m
20V34SG weight131,500 kg
Dimensions11606 mm🔖
Engine kW7 680 kW🔖
Gen. kW7 370 kW🔖
Dimensions (mm)11 465 mm🔖
Weight124 tonnes🔖
Rated electrical power (kW)7830 / 7491🔖
Electrical efficiency (%)GAS: 48.6 / 48.4🔖
Heat rate at generator terminals (kJ/kWh)7408 / 7438🔖
📄
Download datasheet (PDF) (125 KB)
Manufacturer documentation

Images from manufacturer documentation.

Photos, drawings and page previews from this model’s datasheet or catalog.

“1 Rated electrical power and electrical efficiencies are given at generator terminals at 100kPa ambient pressure, 25°C suction air temperature and 30% relative humidity, and without engine driven…”

Wärtsilä 16V34DF – Photo (Wärtsilä datasheet S. 1)
Photo · Wärtsilä datasheet · S. 1
Source: Wärtsilä 16V34DF datasheet, p. 1
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