Class 4 (4th Engineer) MEKM 📅 Jul 2025

Exam Question

The main requirements which a fuel injection system must fulfil are

(a) accurate metering of small amount of fuel oil

(b) control of quality of fuel injection

(d) selective distribution of the fuel in the combustion space

Analyse each of the above statements and State whether they are true or false with a brief reasoning. (16)

Reference Answer

A comprehensive analysis of the four statements reveals that all are fundamental and critical requirements for any marine diesel engine fuel injection system to ensure efficient, reliable, and safe operation. Each statement is analysed below.
### (a) Accurate Metering of Small Amount of Fuel Oil
This statement is **TRUE**.
Accurate metering is the precise control of the quantity of fuel injected into the cylinder during each power stroke. This is fundamentally linked to engine load and speed control.

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