WinGD X72DF - Methane Number Dependent Engine Output; Methane Number Calculation

Marine Installation Manual 2021-08 4-37
4 Ancillary Systems
4.4 Fuel gas system
X72DF
Methane number dependent engine output
The Methane Number (MN) has an influence on the maximum available power
output.
Figure 4-18 Maximum achievable power
Methane number calculation
An application provided by the European Association of Internal Combustion
Engine Manufacturers (EUROMOT) allows calculating the methane number of
natural gas mixtures. The application is free software and can be accessed with
the following link:
https://www.euromot.eu/wp-content/up-
loads/2019/07/MWM-MN-Code-for-distribution-2016-04-22.zip
SM-0036
60
Engine power [%]
50
55
65
70
75
80
90
85
95
100
105
8070
90
10060
MN
65 75
85
95
maximum engine power