HND MAN 8L Marine Main Engine

The 8L diesel engine is a high-performance power core specifically designed for heavy equipment such as ships. It boasts a rated power of up to 1720 kW, a stable rated speed of 1000 r/min, and cylinder bore and stroke specifications of 210 mm/310 mm. Its powerful output and smooth operation fully meet the power requirements of various navigation conditions.

This product combines strong power, excellent fuel economy, and a long service life. It not only offers superior acceleration performance but also significantly reduces operating costs. Simultaneously, it meets Tier II/Tier III emission standards. Its superior structural reliability and comprehensive compliance with international environmental standards ensure efficient, economical, and compliant operation of ships under various navigation conditions.

Advantages of Marine Main Engine MAN 8L

Powerful performance and excellent acceleration.
Outstanding fuel efficiency significantly reduces operating costs.
Extended service life reduces future maintenance costs.
Excellent structural reliability adaptable to various navigation conditions.
Fully compliant with international environmental standards, meeting compliance requirements.

Technical Specifications

Engine Model :	8L
Rated Power :	1720 kW
Speed :	1000 r/min
Emission :	TierⅡ/TierⅢ

coming soon…

Engine Model	Rated Power	Speed	Emission
6L	1290 kW	1000 r/min	TierⅡ/TierⅢ
7L	1505 kW	1000 r/min	TierⅡ/TierⅢ
8L	1720 kW	1000 r/min	TierⅡ/TierⅢ
9L	1935 kW	1000 r/min	TierⅡ/TierⅢ
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8L Marine Main Engine Type
Model Parameters	8L
Rated Power	1720 kW
Speed	1000 r/min
Emission	Tier Ⅱ/Tier Ⅲ

Technical Parameter of 21/31 Series Marine Main Engine
Bore/Stroke	210/310 mm
Cylinder Arrangement	Inline
Cylinder Numbers	6、7、8、9
Unit Cylinder Displacement	10.7 L
Compression Ratio	16.5 : 1
Rated Unit Cylinder Power	215 r/min
Maximum Explosion Pressure	21 MPa
Rotation Direction	Clockwise/Counterclockwise
Fuel Quality	HFO (not exceeding 700 cSt/50°C, RMK700) MDO (DMB) – MGO(DMA, DMZ)
Fuel Consumption (+5%)	192 g/kw·h
Lube Oil Consumption (MCR)	0.4~0.8 g/kW·h

21/31 Series Marine Main Engine Dimension and Weight

Diesel Engine Model	Weight (kg)	Dimension (mm)
Diesel Engine Model	Weight (kg)	L	W	H
6L	16	4185	1880	3113
7L	17.5	4540	1880	3267
8L	19	4895	1880	3267
9L	20.5	5250	1880	3267
The data in the table is for reference only, and the final approved drawing shall prevail.

Power Code Definition
I	ISO rating. Standard ambient condition: Air temp. 25℃, Charging air coolant 25℃, Air pressure 0.1 MPa, Relative humidity 30%
M	ISO unlimited navigation marine main engine or auxiliary engine output power. Standard ambient condition: Air temp. 45℃, Charging air coolant 32℃, Air pressure 0.1 MPa, Relative humidity 60%
C	Continuous power
F	Fuel limited power, time limited
X	Overload 10%
N	Net effective power
2h/12h	Operation 2 hours each 12 hours
1h/12h	Operation 1 hour each 12 hours
1h/6h	Operation 1 hour each 6 hours
0.5h/6h	Operation 0.5 hour each 6 hours
1000h/y	Operation 1000 hours within one year
For example: MCFN: Marine unlimited navigation fuel limited power, can operate continuously, without overload capability.