Exam Question
(a) Name a few types of filters used in the engine room (5)
(b) Sketch atleast two types and indicate, how they perform with reference to the medium used (5)
(c) Sketch and describe lub oil filters used in M.E. lub oil system (6)
Class 4 (4th Engineer)
MEKG
📅 Jan 2023
Reference Answer
### (a) Types of Filters Used in the Engine Room
Based on their principle of operation and application, several types of filters are utilized in a vessel's engine room to maintain the purity of various fluids. Five common types are:
1. **Fine Mesh Screen Filter:** This is a surface-type filter that uses a woven metallic mesh or perforated screen as the filtering medium. It physically blocks particles larger than the mesh size. They are extensively used in fuel oil, lubricating oil, and hydraulic oil systems. They are often arranged in a duplex configuration to allow for cleaning without interrupting system operation.
2. **Magnetic Filter:** This filter employs powerful permanent magnets or electromagnets to capture and remove ferrous metallic particles (iron, steel) from lubricating oil. It is critical for protecting gears, bearings, and other components from abrasive wear caused by metallic debris. They are typically installed in gearbox LO systems or main engine LO systems.
Based on their principle of operation and application, several types of filters are utilized in a vessel's engine room to maintain the purity of various fluids. Five common types are:
1. **Fine Mesh Screen Filter:** This is a surface-type filter that uses a woven metallic mesh or perforated screen as the filtering medium. It physically blocks particles larger than the mesh size. They are extensively used in fuel oil, lubricating oil, and hydraulic oil systems. They are often arranged in a duplex configuration to allow for cleaning without interrupting system operation.
2. **Magnetic Filter:** This filter employs powerful permanent magnets or electromagnets to capture and remove ferrous metallic particles (iron, steel) from lubricating oil. It is critical for protecting gears, bearings, and other components from abrasive wear caused by metallic debris. They are typically installed in gearbox LO systems or main engine LO systems.
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