Weichai MANL21/31 series marine diesel engine (1290-1935KW)

Item No.: 00521
Four-stroke, water-cooled, in-line, supercharged and intercooled
Number of cylinders 5/6/7/8/9
Displacement 53.5/64.2/74.9/85.6/96.3L
Description Review
Description

product description

WEICHAI MAN L21/31 series marine diesel engines are introduced by Weichai and the world marine diesel engine brand German MAN through the signing of a license production agreement. The body of this series of products adopts an overall rigid design with high safety; MAN's advanced turbocharger and two-stage intercooler; SaCoSone safety control system produced by MAN, with high reliability; combustible MGO, MDO, HFO, strong adaptability.

This series of products can be used in marine propulsion main engines and generator sets. The products used to propel the main engine are divided into 6, 7, 8, and 9 cylinders, the speed is 1000r/min, the power covers 1290-1935kW, and the minimum fuel consumption is 192g/kWh. The products used for the generator set are divided into 5, 6, 7, 8 and 9 cylinders, the speed is 900r/min and 1000r/min, the power covers 1000-1980kW, and the minimum fuel consumption is 189g/kWh. The oil consumption rate is less than 0.8g/kW•h, which has good power and economy.

Product parameters

 

Type Four-stroke, water-cooled, in-line, supercharged and intercooled Number of cylinders 5/6/7/8/9
Bore/Stroke 210×310mm Displacement 53.5/64.2/74.9/85.6/96.3L
Minimum fuel consumption 192g/kW·h oil consumption rate 0.8g/kW·h
Start method gas start idle speed 500±50r/min
Crankshaft rotation direction
(facing free end)
Clockwise Counterclockwise Emission Standards IMO TIER II, China I

 

product spectrum

 

Marine main engine
model Number of cylinders Rated power
kW/Ps
Calibration speed
r/min
Dimensions (mm) Net weight (t)
WEICHAI MAN 6L21/31 6 1290/1755 1000 4544*1695*3113 16.0
WEICHAI MAN 7L21/31 7 1505/2050 1000 4899*1695*3267 17.5
WEICHAI MAN 8L21/31 8 1720/2340 1000 5254*1882*3267 19.0
WEICHAI MAN 9L21/31 9 1935/2630 1000 5609*1882*3267 20.5

 

generator set
model Number of cylinders Frequency (Hz) Speed ​​(r/min) Unit power (kW) Dimensions (mm) Net weight (t)
WEICHAI MAN 5L21/31 5 50/60 1000/900 950 5829*1800*3183 22.5
WEICHAI MAN 6L21/31 6 50/60 1000/900 1254 6314*1800*3183 26
WEICHAI MAN 7L21/31 7 50/60 1000/900 1463 6639*1880*3289 29.5
WEICHAI MAN 8L21/31 8 50/60 1000/900 1672 7682*1880*3289 33
WEICHAI MAN 9L21/31 9 50/60 1000/900 1881 8062*1880*3289 36.5

Remarks: Product parameters and model spectrum are for reference only. For fishing boat model spectrum, please contact relevant personnel to obtain official information.

 

Features

 

  • Power: The power covers a wide range, the propulsion main engine is 1290kW-1935kW, and the generator set is 1000-1980kW.
  • Economy: The minimum fuel consumption of the propulsion main engine is 192g/kW•h, the minimum fuel consumption of the generator set is 189g/kW•h, and the lubricating oil consumption rate is less than 0.8g/kW•h.
  • Reliability: The unique structural design of the engine and the advanced SaCoSone safety control system produced by MAN guarantee trouble-free operation of the engine and a long overhaul period.
  • Applicability: The fuel oil has good applicability, and can use light diesel oil MGO, marine diesel MDO, heavy oil (HFO) with a viscosity of up to 700cSt/50℃, and can provide a booster system matching scheme according to the engine operating conditions.
  • Environmental protection: Meets IMO Tier II and China Stage 1 emission requirements.
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