Class 4 (4th Engineer) MEKG 📅 May 2023

Exam Question

Sketch and describe a fuel system diagram for a 2 stroke Marine diesel engine from storage service tank to fuel injectors. Show the various components and fittings which are provided in the circuit. What is the purpose of mixing columns columns and auto deaerating valve? (16)

Reference Answer

### Fuel System for a 2-Stroke Marine Diesel Engine
The primary purpose of the heavy fuel oil (HFO) system is to deliver clean fuel from the service tank to the fuel injectors at the correct pressure, temperature, and, most critically, the required viscosity for efficient atomization and combustion, while ensuring operational safety.
### Path of Fuel Flow
The system can be divided into a low-pressure supply section and a high-pressure circulating section.

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