engine is designed to serve a variety of vessel types requiring main engine
propulsion in the 4.2 to 9.8 MW power range – making it ideal for large fishing
the company, the Wärtsilä 31 has significantly reduced maintenance
requirements, while raising fuel efficiency, fuel flexibility, and operational
optimisation to levels that are far beyond anything else currently available.
Its fuel consumption efficiency in its diesel version is as low as
It comes in three alternative versions; Diesel,
Dual-Fuel (DF) and Spark-Ignited Gas (SG). The multi-fuel capabilities that the
Wärtsilä 31 brings to the market extend the possibilities for operators to
utilise different qualities of fuels, from very light to very heavy diesel, and
a range of different qualities of gas.
The increases in fuel efficiency and fuel
flexibility are matched by significant reductions in maintenance costs. For
example, the first service on the Wärtsilä 31 is required after only 8,000
running hours, whereas alternative standard marine engines require maintenance
after 2,000 running hours.
The Wärtsilä 31 is available in 8V, 10V, 12V, 14V
and 16V cylinder configurations. Among the many features of this engine are the
latest developments in fuel injection systems, engine control systems, and
charge air technologies. It is available for applications in mechanical drive
installations, for producing electricity when coupled with a generator, for
hybrid installations, as well as heavy duty installations or as an auxiliary