Weichai WD12C400-21 400hp marine propulsion engine

WD12C400-21 Marine Propulsion Engine – Technical Specifications

Basic Specifications

• Rated Power: 294 kW

• Rated Speed: 2150 rpm

• Overload Power: 323 kW

• Overload Speed: 2219 rpm

• Number of Cylinders / Valves: 6 / 12

• Configuration: In-line

• Cycle: 4-stroke

• Bore × Stroke: 126 × 155 mm (4.96 × 6.10 in)

• Compression Ratio: 17:1

• Displacement: 11.596 L (707.6 in³)

• Fuel System: Mechanical

• Injection System: Direct Injection

• Aspiration: Turbocharged and Aftercooled

• Rotation (from flywheel end): Counterclockwise

• Overall Dimensions (L×W×H): 1478 × 808 × 1344 mm (58.2 × 31.8 × 52.9 in)

• Dry / Wet Weight: 1110 kg / 1208 kg (2447 lb / 2663 lb)

• Emission Standard: IMO Tier II

Air Intake System

• Air Flow: 24.5 m³/min (876.1 cfm)

• Max Intake Restriction: 7 kPa (28.1 in H₂O)

• Max Intake Temperature: 50 ± 5 °C (122 ± 41 °F)

Cooling System

• Coolant Capacity: 73 L (16.06 gal)

• Sea Water Pump Flow: 18 m³/h (3960 gal/h)

• Thermostat Range: 71–82 °C (159.8–179.6 °F)

Exhaust System

• Exhaust Flow: 68 m³/min (2426.78 cfm)

• Max Back Pressure: 6 kPa (24.1 in H₂O)

• Exhaust Temperature (after turbo): 550 °C (1022 °F)

Lubricating System

• Oil Capacity (Low/High): 22.2 / 27.2 L (4.88 / 5.98 gal)

• Max Oil Consumption: ≤ 0.3 g/(kW·h)

• Idle Oil Pressure: 130–280 kPa (522–1124 in H₂O)

• Rated Oil Pressure: 380–550 kPa (1526–2209 in H₂O)

Starting System

• Voltage: 24 V

• Starter Power: 7.5 kW (10.2 Ps)

• Recommended Battery: 165 Ah × 2

Noise Level

• SPL: 110.9 dB(A)

Product Offerings

Jinan Diesel Engine: Jichai 190 series, 6190, 8190, 12V190, 16V190 diesel and gas engine.

Shengdong Gas Generator: 500kW, 700kW gas generators.

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Weichai Baudouin Series: 6M26, 6M33, 12M26, 12M33, 16M33, 12M55, M26, M33, M55 Series.

Zichai Engines: Z6170, Z8170, 6210, 8210, LB8250, LC8250, ZC6200, Z6180, Z8180, Z6150, 6300, 8300.

Generator Sets: (20-2000KW) from leading domestic brands such as Jichai, Shengdong, Zichai, and Yuchai.