How ELFI Valve works in marine engines | shebin biju posted on the topic

Behind the Precision: ELFI Valve from MAN B&W ME Engine

One of the most critical components in electronically controlled marine engines is the ELFI Valve (Electronic Fuel Injection Valve)—and here’s a close-up look at it in action!

This valve plays a crucial role in delivering precise hydraulic signals to the fuel booster units, controlling fuel injection timing and quantity with exceptional accuracy.

Major components:

1. Hydraulic Actuator

It receives hydraulic oil pressure to actuate the valve mechanism.

2. Position Feedback Sensor (LVDT / Inductive sensor)

This sensor sends the spool position feedback to the engine control system.


3. Solenoid Coil –

The black rectangular component with wiring and a label. It energizes to shift the valve spool and control hydraulic flow.


These components work together to ensure efficient combustion, fuel economy, and emission control—making it a cornerstone of modern marine engine technology.

As a Marine electro-technical supplier, we offer professional service on that.

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