Product Details

Wärtsilä Genset 20

Main technical data

Wärtsilä Genset 20			IMO Tier II
Cylinder bore	200 mm	Generator voltage	0.4–13.8 kV
Piston stroke	280 mm	Generator efficiency	0.95–0.96
Cylinder output	185, 200 kW/cyl	Fuel specication: Fuel oil
Speed	900, 1000 rpm	700 cSt/50°C	7200 sR1/100°F
Mean effective pressure	27.3, 28.0 bar	ISO 8217, category ISO-F-RMK 700
Piston speed	8.4, 9.3 m/s	SFOC 187 g/kWh at ISO condition

Option: Common rail fuel injection.

Rated power
	60 Hz		50 Hz
	185 kW/cyl, 900 rpm		200 kW/cyl, 1000 rpm
Engine type	Eng. kW	Gen. kW	Eng. kW	Gen. kW
4L20	740	700	800	760
6L20	1 110	1 055	1 200	1 140
8L20	1 480	1 405	1 600	1 520
9L20	1 665	1 580	1 800	1 710

Dimensions (mm) and weights (tonnes)
Engine type	A*	E*	I*	K	L*	Weight*
4L20	4 910	1770/1920	990	1 800	2338	14.0
6L20	5 325	1770/1920/2070	895/975/1025	1 800	2243/2323/2373	16.8
8L20	6 030	1920/2070	1025/1075	1 800	2474/2524	20.7
9L20	6 535	2070/2300	1075/1125	1 800	2524/2574	23.8

Marine specific information - definitions and notes

Generating set dimensions
A - Total length of the generating set.
E - Total width of the generating set.
I - Distance from the bottom of the common baseframe to the crankshaft centreline.
K - Minimum height from the crankshaft centreline when removing a piston.
L - Total height of the generating set.

Dimensions and weights
Dimensions are in millimetres and weights are in metric tonnes.
Indicated values are for guidance only and are not binding.
Cylinder configurations: L = in-line, and V = V-form.

Specific fuel oil consumption
At ISO standard reference conditions
Lower calorific value of fuel 42 700 kJ/kg
Tolerance 5%
Without engine driven pumps
At 85% load.

ISO standard reference conditions
Total barometric pressure: 1.0 bar
Suction air temperature: 25 °C
Charge air, or scavenge air, cooling water temperature: 25 °C
Relative humidity: 30%

This is a range of medium-speed generating sets running on heavy fuel oil, and based on Wärtsilä 20 engines.

The Auxpac auxiliary generating sets are supplied as pre-engineered and pre-commissioned standard packages. The common base-frame is optimized for the package, which together with the compact design of the engine and the selected generator, offers unmatched power-to-space and power-to-weight ratios.

The Wärtsilä Auxpac generating sets ensure the availability of electrical power in sufficient quantity, as and when it is needed. They cover an electrical power output of 500 to 2,800 kWe for either 50 or 60 Hz operation.

Through modularization, the generating sets can be built to high, comprehensive specifications at a competitive price. Wärtsilä Auxpac generating sets provide easy installation, easy operation, and low operating costs. Other benefits of pre-engineering include readily available documentation, including models in Tribon® format, and short lead-times.

Wärtsilä provides project management and experienced marine engineering to support the design and installation. Installation and commissioning procedures are standardized and well documented, which reduces the risk of shipyard errors. Auxpac generating sets are offered only as 400V/690V– 50Hz and 450V/690V–60 Hz in the power range 500 kW to 2800 kW.

Wärtsilä is continuously developing its products to achieve high environmental performance. The Wärtsilä Auxpac generating sets comply with IMO Tier II MARPOL Annex VI regulations and are supplied with an EIAPP Statement of Compliance.

CONTACT:

Name: Elaine Zheng
Tel: 86-592-3686566
Fax: 86-592-3686886

Mobile: +86 18359108305
Skype: Homealine93
Wechat: Homelaine