Upgrade package - power limitation for 4-stroke engines

Are your vessels prepared for EEXI?

By December 2023 all existing merchant, cruise and ferry vessels, above 400 GT* and which engage in international trade, must comply with the requirements of the IMO’s Energy Efficiency Existing Ship Index (EEXI), which defines a minimum energy efficiency level for vessels.
^{*falling under MARPOL Annex VI}

The Wärtsilä 4-stroke Engine Power Limitation is an upgrade package for vessels with a single main engine per shaft-line with a fixed pitch propeller (FFP) but without PTO/PTI, which will enable compliance with the new requirements. The solution can be installed as an add-on to Wärtsilä 4-stroke engines and has been designed in collaboration with one of the major classification societies.

Key benefits

Ensure compliance with EEXI requirements
A standardised and cost-effective solution
Integrate with existing Wärtsilä 4-stroke engines

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Wärtsilä 4-Stroke Engine Power Limitation

How it works

The speed/load controller measures the instant power delivered by the engine
A software upgrade limits the actuator position when the engine power reaches the EPL set point
The system can be overridden by the ship's master or officer of the watch with a key switch on the bridge
The EPL status is continuously monitored by a dedicated data logging system embedded in the EPL cabinet

Scope of supply

Control cabinet with data collection and storage functionality
Override switch for bridge
EPL documentation
Class plan approval during project executionInstallation, commissioning and verification