Exam Question
(a) How a 2-stroke engine started? Describe the sequence of engine starting (5)
(b) Draw Timing Diagram of engine starting, showing crank position of each step (6)
(c) What is OVERLAP in engine starting (5)
Class 4 (4th Engineer)
MEKM
📅 Jul 2023
Reference Answer
### (a) How a 2-stroke engine is started? Describe the sequence of engine starting.
A 2-stroke marine diesel engine is started using high-pressure compressed air, typically at 15-30 bar. The sequence is a precisely timed series of events controlled by the engine's control system to ensure a safe, reliable, and directional start.
**Starting Sequence:**
1. **Preparation (Engine at STOP):**
A 2-stroke marine diesel engine is started using high-pressure compressed air, typically at 15-30 bar. The sequence is a precisely timed series of events controlled by the engine's control system to ensure a safe, reliable, and directional start.
**Starting Sequence:**
1. **Preparation (Engine at STOP):**
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