Class 4 (4th Engineer) MEKM 📅 Jun 2023

Exam Question

(a) Draw a diagrammatic Sketch of the Fuel Oil system used in an Electronic type engine (8)

(b) Describe how fuel injection to unit is carried out. (4)

(d) Why fuel injection timing is precise in this system? (2)

Reference Answer

### (a) Diagrammatic Sketch of the Fuel Oil system used in an Electronic type engine
The diagram should illustrate the complete path of fuel from the service tank to the injection into the cylinder, clearly demarcating the low-pressure and high-pressure sections. Key components to be included are:
* **Fuel Oil Service Tank:** Starting point of the system.
* **Low Pressure Supply Pumps (Redundant):** Typically screw or gear pumps, providing initial pressure to the system.

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