Main Data And Outputs; Maximum Continuous Output - Wartsila 31 Product Manual

Wärtsilä 31 Product Guide
1.

Main Data and Outputs

The Wärtsilä 31 is a 4-stroke, non-reversible, turbocharged and intercooled diesel engine with
direct fuel injection.
Cylinder bore ........................
Stroke ...................................
Number of valves .................
Cylinder configuration .........
V-angle .................................
Direction of rotation .............
Speed ...................................
Mean piston speed ...............
1.1

Maximum continuous output

Table 1-1
Cylinder
configuration
W 8V31
W 10V31
W 12V31
W 14V31
W 16V31
The mean effective pressure Pe can be calculated as follows:
where:
Pe =
P =
n =
D =
L =
c =
Wärtsilä 31 Product Guide - a1 - 18 October 2016
310 mm
430 mm
2 inlet valves
2 exhaust valves
8, 10, 12, 14 and 16
50°
Clockwise, counterclockwise
720, 750 rpm
10.32 - 10.75 m/s
Rating table for Wärtsilä 31
Main engines
750 rpm
[kW]
4880
6100
7320
8540
9760
mean effective pressure [bar]
output per cylinder [kW]
engine speed [r/min]
cylinder diameter [mm]
length of piston stroke [mm]
operating cycle (4)
Generating sets
720 rpm
Engine [kW] Generator [kVA]
4720 5664
5900 7080
7080 8496
8260 9912
9440 11328
1. Main Data and Outputs
750 rpm
Engine [kW] Generator [kVA]
4880 5856
6100 7320
7320 8784
8540 10248
9760 11712
1-1