PERSONAL ENERGY / ENGINE CONTROL / DC 24 V UPS
Keep the engine running.
Keep control power uninterrupted.
EngineUPS: Uninterrupted DC 24 V power for marine dual-fuel engine controls.
EngineUPS is a dedicated power system designed and manufactured to maintain the DC 24 V supply to Woodward engine control units (auxiliary equipment). It prevents interruption of control power during shipboard blackouts and power-source changeovers.
2023–2026 / three units per vessel
Three systems per vessel
Blackouts and power-source transfers
Why EngineUPS
Fuel powers the engine. Electricity powers its controls.
Dual-fuel engines use electronic controls to manage operation with gaseous and liquid fuels. Even when fuel remains available, loss of power to the control equipment may compromise continued operation.
Maintaining propulsion or generating-engine operation depends on more than fuel availability. EngineUPS does not back up the engine starting battery or the vessel's entire electrical system. It protects the DC 24 V supply to the equipment that controls engine operation.
Risk 01
Blackout
Control power must remain available when the normal shipboard supply is lost.
Risk 02
Power-source transfer
Changing power sources must not cause an interruption at the controller.
Design focus
DC 24 V continuity
The critical criterion is continuity at the DC load, not an AC-side UPS-mode label.
Marine Engine Control
Control power for LNG-fueled vessels and dual-fuel engines.
On dual-fuel engines that primarily use LNG and can also operate on liquid fuels such as heavy fuel oil, electronic control is fundamental to engine operation. Continuous control power is therefore an important design consideration for LNG-fueled vessels, including Panamax-class coal carriers, during blackouts and onboard power-source transfers.
EngineUPS is designed to supply uninterrupted DC 24 V power to this class of engine control equipment. Our delivery records provide practical evidence for evaluating control-power continuity in newbuilding, retrofit and maritime technical discussions. From 2023 to 2026, nine units were delivered across three vessels.
Power Architecture
Dedicated DC 24 V power for engine control equipment
The delivery-project requirement was three DC 24 V / 80 A systems per vessel. The objective was to maintain uninterrupted power to each protected engine-control circuit during a blackout or power-source transfer.
Required circuit 1
DC 24 V / 80 A
Dedicated power system with battery support
Engine control unit
Required circuit 2
DC 24 V / 80 A
Dedicated power system with battery support
Engine control unit
Required circuit 3
DC 24 V / 80 A
Dedicated power system with battery support
Engine control unit
Conceptual configuration. The 80 A value is the requirement for these projects. Actual circuits, protection, monitoring and warranties depend on the individual design.
The first requirement is no interruption, not a fixed number of backup minutes.
No fixed backup duration was specified for these projects. Continuity through blackouts and power-source changes was the principal objective, with operational margin provided in the design. This does not mean unlimited operation: duration depends on load, battery condition and operating conditions.
Implemented, Not Just Proposed
Nine units delivered to three vessels, 2023–2026.
EngineUPS was designed and manufactured by Kei Communication Technology for integration with actual marine dual-fuel engine control-power systems. Our delivery record comprises nine units across three vessels between 2023 and 2026.
The protected auxiliary engine-control equipment is manufactured by Woodward. EngineUPS itself is our product; no approval or endorsement by Woodward is claimed.
EngineUPS / Product Gallery
EngineUPS product photographs
EngineUPS DCUPS24-2000-224
FAQ
About EngineUPS
Why does an engine need a UPS if it runs on fuel?
EngineUPS protects electronic control equipment, not the mechanical drive or propulsion system. A dual-fuel engine may be unable to continue operating normally if control power is lost. EngineUPS maintains a dedicated 24 V DC supply to the controls.
What does EngineUPS back up?
In the projects described here, EngineUPS protects the 24 V DC power supply to Woodward engine control units used as auxiliary engine-control equipment. It is not presented as an engine starting-battery UPS.
Which power events is the system intended to address?
Its primary purpose is to avoid interruption of control power during shipboard blackouts and changes between power sources.
What was the electrical requirement?
The project requirement was three DC 24 V / 80 A systems per vessel. This describes the requirement for the referenced projects, not a blanket continuous-output guarantee for every configuration.
How long is the backup duration?
No fixed backup-duration requirement was specified for these projects. The systems were designed with operational margin, focusing on continuity through blackouts and transfers. Actual duration depends on the load, battery condition and design conditions.
Has EngineUPS been delivered to operating projects?
Nine EngineUPS units were delivered across three vessels from 2023 to 2026.
Is EngineUPS manufactured or endorsed by Woodward?
No such endorsement is claimed. EngineUPS is designed and manufactured by Kei Communication Technology Inc. Woodward is the manufacturer of the engine control equipment protected in these installations.
Consultation
Vessel operational continuity and uninterrupted engine-control power
We can review control-power continuity requirements for vessel renewal, newbuilding projects and maritime technical assessment. Detailed engineering discussions cover source configuration, required voltage and current, equipment to be protected, and transfer conditions.
Technical consultation →Revision History
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