Dual-Fuel Engines

Dual-Fuel Engines
DE20DF / DE23DF / DE28DF / DE35DF

BlueGK28DF

Further reducing the environmental impact of our engines we introduce our DF engine lineup: dual-fuel engines that switch seamlessly between gas and liquid fuel and, unlike a conventional diesel engine, can cut NOx by up to 80% during gas mode operation. This series brings together tried and tested technologies from our accredited diesel and gas lines into one economic solution.

  1. Complies with IMO NOx Tier3 exhaust emission regulations (in gas mode)
  2. Low-fuel consumption realized with lean combustion technology and optimum valve timing(variable valve timing-mechanism)
  3. Improved redundancies with the independent pilot fuel injection system, and peace of mind thanks to the Independent Safety System (ISS) fail-safe control
  4. Four-stage loading possible in gas mode (load response improvement)
    *In the case of using DE28DF
  5. Supports various fuels (Oil:HFO/MDO/MGO, Gas:LNG)

CATALOG

CATALOG

PDF CATALOG

Safety Features of the Engine's Gas Piping Area

  • Double-walled gas piping system
  • Ventilation function of first wall piping lines, and installed gas leak detection
  • Instantaneous switching to diesel mode in the event of gas slip (failure of gas supply system), with injection of inert gas into the gas fuel pipe
Gas Piping Layout Diagram

Specifications

Model Unit DE20DF DE23DF
Maximum engine output kWm 890 1,200
Rotation speed min-1 900 900
No. of cylinders 6 6
Bore mm 205 230
Stroke mm 300 320
Fuel Natural gas(gas mode)
MDO, MGO, HFO(diesel mode)
Pilot fuel(gas mode) MDO or MGO(approx. 1% of total heating value)
Overall Length(*) mm 5,395 6,205
Overall Width(*) mm 1,885 1,925
Overall Height(*) mm 3,245 3,330
Piston Overhaul Height(*) mm 1,530 1,645
Generator Set Dry Mass(*) ton 17 27
Model Unit DE28DF DE35DF
Maximum engine output kWm 1,730 / 2,300 3,060 / 4,080
Rotation speed min-1 720 / 750 720
No. of cylinders 6 / 8 6 / 8
Bore mm 280 350
Stroke mm 390 440
Fuel Natural gas(gas mode)
MDO, MGO, HFO(diesel mode)
Pilot fuel(gas mode) MDO or MGO(approx. 1% of total heating value)
Overall Length(*) mm 7,195 / 9,100 9,065 / 10,470
Overall Width(*) mm 2,040 2,395
Overall Height(*) mm 3,995 / 4,055 4150
Piston Overhaul Height(*) mm 2,065 2,555
Generator Set Dry Mass(*) ton 36 / 47 81 / 98

※ Actual dimensions and mass may vary depending on the specifications of the generator unit.

DF Engine Structure

DF Engine Structure

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