L21/31 diesel engines in the power range of 1000-1980KW. Based on the same L16/24 and L27/38 diesel innovative , streamlined design , L21/31 diesel engine small size and light weight, modular structure, pipeless , fewer components , low maintenance requirements, high-power , low- noise, economic and low exhaust emissions to meet the IMO organization NOX emissions.
In its smooth, uncluttered exterior , L21/31 diesel engine uses a lot of advanced technology, resulting in its high reliability and long overhaul intervals . Its support system designed to make fuel supply , cooling water , start the air interface is integrated in one . The advantage is lower initial cost , easier to operate and maintain.
Compact
In the same power range , L21/31 diesel and other long-stroke diesel engine compared to a shorter length , height lower , can be installed in a relatively narrow cabin . Dual camshaft structure, with unsurpassed flexibility, allowing a wide range of fuel consumption and low emissions inherent to choose between .
Independent cylinder unit
Including cylinder head, piston, cylinder liner , connecting rod , etc. can be a whole unit for easy replacement and maintenance , reducing maintenance time.
Low bearing wear
Linkage of the marine type, and the use of lower surface bearing pressure design, but also reduces bearing wear and a longer bearing life .
Front-end concept
All ancillary equipment, such as oil and water pumps , coolers, filters , safety and control valves are housed in a single front-end box. Easy access and maintenance.
HFO
The entire load range , L21/31 diesel fuel can be very effective in heavy oil with cheap , has a high output , low oil , fuel consumption characteristics.
Lifting cylinder interval of 20000-25000 hours , L21/31 will minimize daily maintenance workload , each cylinder assembly can be removed as a unit for maintenance or replacement, without requiring a high lifting cylinder space .
Optimal operating temperature control
L21/31 diesel engine with integrated cooling water system to ensure that the entire load range , from zero to full load can achieve the optimum temperature control. In addition , the air cooler is equipped with water mist catcher to reduce the amount of condensation inside the cooler .
Lambda controller A
Lambda controller can guarantee that all of the fuel injected into the cylinder can complete combustion , reducing the load on the machine increases inside the machine generated pollution and wear.
Data:
1. Configuration: In-line
2. Bore: 210mm
3. Stroke: 310mm
4. Speed: 900/1000rpm
5. Piston Speed: 9.3/10.3m/sec
6. BMEP: 27.3/24.6 bar
7. Max combustion pressure: 210bar
8. Fuel quality: HFO up to 700cSt/50℃
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