8M21 series marine diesel engine (735-1000kW)
High-speed engine products including WP4.1,WP4,WP6,WP7,WD10,WD12,WP10, WP12,WP13,M26,M33, which are mainly used as the main engine and auxiliary engine of the high-speed ships and boats, passenger ship, and fishing boat and inland river transport ship; WHM6160/170 medium speed engine products, which are mainly used as the main engine, electric propeller and auxiliary engine of the bulk cargo carrier, car/passenger ferry, public service ship, offshore support vessel, ocean fishing vessel, engineering ship, multi-purpose ship; CW200/CW250/WH620/WH20/WH25/WH28 medium speed engine products, which are mainly used as the main engine, and auxiliary engine of the engineering ship, passenger ship, fishing boat, and bulk cargo carrier; and MAN series L21/31, L23/30A, L27/38, L32/40 and V32/40 products, which are mainly used as the main engine, electric propeller and auxiliary engine of the bulk cargo carrier, engineering ship, multi-purpose ship, and marine traffic management ship.
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Parameters Table
| Type | Four-stroke, water cooled, V type, dual stage turbocharged and intercooled | Number of cylinders | 8 |
| Bore & stroke | 127×165 (mm) | Displacement | 16.72 L |
| Oil consumption rate | ≤0.5 g/kW.h | Noise | ≤100 dB(A) |
| Minimum fuel consumption rate | 200 g/kW.h | Idle speed | 700±50 r/min |
| Rotation (facing the flywheel) |
Counter-clockwise | Net weight | 1900 kg |
| Dimensions (L×W×H) | 1300×1200×1285 (mm) | ||
Model Portfolio Table
| Series | Model | Aspiration | Rated power kW/Ps |
Speed r/min |
Fuel system | Emission | Power rating |
| 8M21* | 8M21Y1000-23E200 | Dual TA | 735/1000 | 2300 | HPCR | IMO Ⅱ | P3 |
| 8M21Y1100-23E200 | Dual TA | 809/1100 | 2300 | HPCR | IMO Ⅱ / EPA III | P3 | |
| 8M21Y1250-23E200 | Dual TA | 919/1250 | 2300 | HPCR | IMO Ⅱ / EPA III | P4 | |
| 8M21Y1360-23E200 | Dual TA | 1000/1360 | 2300 | HPCR | IMO Ⅱ / EPA III | P5 |
Remark: The delivery date of products marked with * shall be subject to the reply of the manufacturer. Product parameters and model portfolio are for reference only. Please contact relevant personnel for official information on delivery time and fishing boat model portfolio.
Product description
Safe and reliable
- The high-strength design of structural parts such as engine block, piston and bearing bush ensures the reliability of diesel engine under high explosion pressure
- Using the global excellent supplier system of Weichai, the quality of parts is reliable
- Both cooling and lubrication systems have emergency interfaces
- Perfect self-diagnosis system, perfect failure protection mode, and safe control strategy
- Replace the filter without stopping
Strong power
- Accurate control by electronic control units, high injection pressure, small fluctuation of rotating speed, and strong power
- High torque range is wide, quick response, and fast speed increase
- Constant power in high speed range
Economical and fuel-efficient
- The fuel injection law is optimized, the fuel injection pressure, fuel injection quantity and fuel injection time are accurately controlled, the fuel is fully atomized, and the minimum fuel consumption rate is 200g/kW•h
- Customized design for lower fuel consumption
Comfortable and environmentally friendly
- It can realize multiple injections such as pre-injection and post-injection, and the noise and vibration are reduced by 20% compared with the mechanical pump system
- Emission complies to IMO Tier II and EPA III
Strong practicability
- LCD Internet instruments, vibration isolators, and hand-pressed oil well pumps can be equipped to meet the requirements of different customers
- Modular design, compact structure, convenient engine room layout
- Convenient maintenance, beautiful compact appearance
- Different control strategies are adjusted according to different performance requirements
- Receive/output various control signals, which meet the requirements of automation control
8M21 series marine diesel engi...
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