Exam Question
With reference to stuffing Box of a two stroke main engine explain following:
(a) Why stuffing box is required in two stroke diesel engines. (8)
(b) Explain the maintenance carried out on stuffing box during piston overhaul (8)
Class 4 (4th Engineer)
MEP
📅 Apr 2024
Reference Answer
The stuffing box is a crucial component in large two-stroke crosshead marine diesel engines, serving to maintain critical operational boundaries within the engine. Its design and function are paramount for engine efficiency, safety, and longevity.
**(a) Why stuffing box is required in two stroke diesel engines (8 marks)**
The stuffing box in a two-stroke crosshead diesel engine is fundamentally required to create a hermetic seal around the reciprocating piston rod, effectively separating the engine's operational zones and preventing harmful contamination. The primary reasons are detailed below:
* **Isolation of Scavenge Space from Crankcase:**
**(a) Why stuffing box is required in two stroke diesel engines (8 marks)**
The stuffing box in a two-stroke crosshead diesel engine is fundamentally required to create a hermetic seal around the reciprocating piston rod, effectively separating the engine's operational zones and preventing harmful contamination. The primary reasons are detailed below:
* **Isolation of Scavenge Space from Crankcase:**
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