WÄRTSILÄ WARTSILA 20, Product Manual

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ME
SCR
mode
ME
SCR
mode
AE/DE
SCR
mode
AE/DE
SCR
mode
ME
Tier 2
mode
ME
Tier 2
mode
AE/DE
Tier 2
mode
AE/DE
Tier 2
mode
Wärtsilä 8L20
200 200 200 185 200 200 200 185
kW Cylinder output
1000 1000 1000 900 1000 1000 1000 900 RPM Engine speed
30 30 30 30 30 30 30 30
kPa Pressure drop over charge air cooler
30 30 30 30 30 30 30 30
kPa Pressure drop over oil cooler
120 120 120 120 120 120 120 120 kPa Pressure drop in external system, max.
70...150 70...150 70...150 70...150 70...150 70...150 70...150 70...150 kPa Pressure from expansion tank
Starting air system
3000 3000 3000 3000 3000 3000 3000 3000 kPa Pressure, nom.
3000 3000 3000 3000 3000 3000 3000 3000
kPa Pressure, max.
1800 1800 1800 1800 1800 1800 1800 1800
kPa Low pressure limit in air vessels
1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2
Nm
3
Starting air consumption, start (successful)
Notes:
At ISO 15550 conditions (ambient air temperature 25°C, LT-water 25°C) and 100% load. Flow tolerance 5%. Note 1
At ISO 15550 conditions (ambient air temperature 25°C, LT-water 25°C). Flow tolerance 5% and temperature tolerance
10°C. Note 2
At ISO 15550 conditions (ambient air temperature 25°C, LT-water 25°C) and 100% load. Tolerance for cooling water heat
10%, tolerance for radiation heat 30%. Fouling factors and a margin to be taken into account when dimensioning heat
exchangers. Note 3
At ambient conditions according to ISO 15550. Lower calorific value 42 700 kJ/kg. With engine driven pumps (two cooling
water + one lubricating oil pump). Tolerance 5%. Note 4
ME = Engine driving propeller, variable speed
AE = Auxiliary engine driving generator
DE = Diesel-Electric engine driving generator
Subject to revision without notice.
Wärtsilä 20 Product Guide - a13 - 6 September 2016 3-9
3. Technical Data Wärtsilä 20 Product Guide