Exam Question
(a) Why tie-rods are provided on a 2-stroke main engine? (6)
(b) Why tie rods are placed close to the centerline of the crankshaft? (5)
(c) What is a tie rod pinch screw? And what is its purpose? (5)
Class 4 (4th Engineer)
MEKM
📅 Jun 2024
Reference Answer
### (a) Why tie-rods are provided on a 2-stroke main engine?
Tie-rods are fundamental structural components in large two-stroke marine diesel engines, primarily designed to maintain the overall structural integrity, rigidity, and alignment of the engine frame under the immense forces generated during operation. They achieve this by pre-tensioning the engine structure.
Here are the detailed reasons:
* **Counteracting Combustion Forces:**
Tie-rods are fundamental structural components in large two-stroke marine diesel engines, primarily designed to maintain the overall structural integrity, rigidity, and alignment of the engine frame under the immense forces generated during operation. They achieve this by pre-tensioning the engine structure.
Here are the detailed reasons:
* **Counteracting Combustion Forces:**
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