Class 4 (4th Engineer) MEKM 📅 Dec 2024

Exam Question

(a) Draw Lubricating oil piping diagram with all fittings for a trunk type 4-Stroke

Diesel Engine. (8)

(b) What properties are required for a Lubricating oil used in a 4-stroke Diesel engine? (4)

Reference Answer

### (a) Lubricating Oil Piping System for a Trunk Type 4-Stroke Diesel Engine
A detailed description of the lubricating oil circuit is provided below, corresponding to the requested diagram. The system is a wet sump, forced lubrication type.
**1. Oil Sump/Crankcase:**
- The system starts with the lubricating oil reservoir, which is the engine's crankcase or a dedicated sump tank located in the double bottom beneath the engine.

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