Exam Question
(a) List and explain the desirable properties of lubricating oil for different application such as for main engine, auxiliary engine and for cyliner lubrication. (8)
(b) Sketch an auxiliary engine lubricating oil circuit. (8)
Class 4 (4th Engineer)
MEKM
📅 Jun 2024
Reference Answer
### Part (a): Desirable Properties of Lubricating Oils (8 Marks)
This section outlines the critical properties of lubricating oils for three distinct marine applications. The selection of oil is paramount for engine reliability, efficiency, and longevity.
#### 1. Main Engine Crankcase Oil (System Oil for Crosshead Engines)
This oil lubricates the main running gear and cools the pistons in slow-speed, two-stroke crosshead engines, where it is segregated from the cylinder lubrication system.
This section outlines the critical properties of lubricating oils for three distinct marine applications. The selection of oil is paramount for engine reliability, efficiency, and longevity.
#### 1. Main Engine Crankcase Oil (System Oil for Crosshead Engines)
This oil lubricates the main running gear and cools the pistons in slow-speed, two-stroke crosshead engines, where it is segregated from the cylinder lubrication system.
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