(HELSINKI) — The technology group Wartsila is launching an upgraded, more powerful version of its well established Wartsila 20 diesel engine. This new development features an increased cylinder output of 220 kW that will increase the engine's power density, thereby enabling vessels to accommodate greater payloads or achieve faster speeds with almost the same low fuel consumption as the current version. The increased maximum output will also improve the bollard pull capacity for tugs and support vessels.
By increasing the output per cylinder from 185 kW to 220 kW, it follows that fewer cylinders will be needed when installed in 60 Hz generating sets. This means that a lighter and more compact generating set is possible within the 1.3 to 2 MW merchant auxiliary segment.
Since the new engine is a refinement of the existing Wartsila 20 engine, there is a high level of compatibility with the spare parts needed. The maintenance procedures are also for the most part unchanged.
The Wartsila 20 can switch from MDO to HFO and vice versa without power interruption at any engine operation load. The engine is fully compliant with the IMO Tier II exhaust emissions regulations set out in Annex VI of the MARPOL 73/78 convention. IMO Tier III compliance is available, as an option, together with the Wartsila NOR SCR system. The engine is a popular choice for a wide range of applications including merchant ships, special vessels, and offshore applications. The upgraded Wartsila 20 is also included in the newly introduced Wartsila HYTug series featuring integrated energy storage and power management systems.