Wärtsilä 25 multi-fuel engine launches as company eyes use with ammonia

"The Wärtsilä 25 is designed for long periods of maintenance-free operation and it supports drydocking schedules with a time-between-overhauls (TBO) of up to 32,000 hours. As a result, both downtime and operating costs are significantly reduced. Data-driven dynamic maintenance planning and predictive maintenance services can extend the TBO even further," Wärtsilä said.

The Wärtsilä 25 engine has a turbocharging system with a high-pressure ratio and is currently available in 6L, 7L, 8L and 9L cylinder configurations. The dual-fuel version of the engine has a power output ranging from 1.9 to 3.1 MW, and the diesel version from 2.0 to 3.4 MW.

The common-rail high-pressure fuel injection technology optimises combustion and the fuel-injection settings at all loads. This in turn promotes smoke-free operation," Wärtsilä said.

The engine also includes a self-learning control to reduce calibration needs and to gather critical engine data for predictive maintenance, reporting and analysis purposes with the use of Wärtsilä’s Expert Insight service.

Wärtsilä said engine modules can be replaced ‘on the fly’, eliminating the need for separate software downloads. Optional and easy-to-apply adjustments for Arctic or tropical conditions and for reducing emissions to the level of a pure gas engine are also available, the company said.

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