8M20

Описание двигателя:

8M20 представляет собой восьмицилиндровый четырехтактный дизельный двигатель, нереверсивный, с турбонаддувом, промежуточным охлаждением и с прямым впрыском топлива.

Технические характеристики

Technical data 8M20
Performance Data
Maximum continuous rating acc. ISO 3046/1	kW	1360	1520
Speed	1/min	900	1000
Minimum speed	1/min	280	300
Brake mean effective pressure	bar	24,06	24,20
Charge air pressure	bar	3,30	3,40
Firing pressure	bar	185	185
Combustion air demand (ta = 20⁰C)	m³/h	9240	9485
Specific fuel oil consumption n = const 1)
100%	g/kWh	189	190
85%	g/kWh	188	189
75%	g/kWh	190	190
50%	g/kWh	203	202
Lubricating oil consumption 2)	g/kWh	0,60
NOx  emission 6)	g/kWh	8,50
Turbochargertype		KBB HPR4000
Fuel
Engine driven booster pump	m³/h /bar	1,2/5
Stand-by booster pump	m³/h /bar	1,0/10
Mesh size MDO fine filter	mm	0,025
Mesh size HFO automatic filter	mm	0,010
Mesh size HFO fine filter	mm	0,034
Lubricating Oil
Engine driven pump	m³/h /bar	52,5/10	58,8/10
Independent pump	m³/h /bar	45/10
Working pressure at engine inlet	bar	4-5
Independent suction pump	m³/h /bar	--
Priming pump pressure/suction pump	m³/h /bar	8/5/10/3
Sump tank content/dry sump content	m³	2,3/0,5
Temperature at engine inlet	⁰C	55-65
Temperature controller NB	mm	--
Double filter NB	mm	65/65
Mesh size double filter	mm	--
Mesh size automatic filter	mm	0,030
Fresh water cooling
Engine content	m³	0,160
Pressure at engine inlet min/max	bar	2,5/6,0
Headertank capacity	m³	0,10
Temperature at engine outlet	⁰C	80-90
Two-circuit system
Engine driven pump HT	m³/h /bar	30/3,4	35/4,2
Independent pump HT	m³/h /bar	40/4,0
HT-controller NB	mm	65
Water demand LT-charge air cooler	m³/h	40/3,2	45/4,0
Temperature at LT-charger air cooler inlet	⁰C	38
Heat dissipation
Specific jacket water heat	kJ/kW	550
Specific lube oil heat	kJ/kW	500
Lube oil cooler	kW	189	211
Jacket water	kW	208	232
Charge air cooler 3)	kW	613	648
Heat radiation engine	kW	69
Exhaust gas
Silencer/spark arrester NB 25 dBA	mm	500
Pipe diameter NB afterturbine	mm	500
Maximum exhaust gas pressure drop	bar	0,030
Exhaust gas temp after turbine (25⁰C intake air) 5)	⁰C	290	330
Exhaust gas mass flow (25⁰C intake air)5)	kg/h	1142	11723
Exhaust gas temp after turbine (25⁰C intake air) 5)	⁰C	309
Exhaust gas mass flow (45⁰C intake air) 5)	kg/h	10775	11060
Starting air
Starting air pressure max.	bar	30
Minimum starting air pressure	bar	7
Air consumption per start 4)	Nm³	0,50
Max. crankcase pressure nominal diameter ventilation pipe	mmWs/ mm	25/50
1) Reference conditions: LCV = 42700 kJ/kg ambient temperature 25 ⁰C
charge air coolanttemperature 25 ⁰C tolerance 5 %
+ 1 % for engine driven pump
2) Standard value tolerance ± 0.3 g/kWh related on full load
3) Charge air heat based on 45 ⁰C ambienttemperature
4) Preheated engine
5) Tolerance 10 % rel. humidity 60 %
6) MARPOL 73/78 Annex VI Cycle E2 E3 D2

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