Class 4 (4th Engineer) MEKM 📅 Nov 2022

Exam Question

(a) With a simple sketch, show the cylinder cover used on a low speed two stroke marine propulsion engine (10)

(b) Mention the mountings on cylinder cover and briefly explain the mountings used for fuel, air start and relief purposes. (6)

Reference Answer

### (a) Cylinder Cover of a Low-Speed Two-Stroke Marine Engine
**1. Function and Purpose**
The cylinder cover, also known as the cylinder head, is a critical component of a large two-stroke diesel engine. It performs several essential functions:
* **Combustion Chamber Seal:** It forms the upper boundary of the combustion chamber, creating a gas-tight seal with the cylinder liner to contain the extremely high pressures (up to 200 bar) and temperatures (up to 2000°C) generated during combustion.

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