Exam Question
Describe following terms with respect to Diesel Engine with suitable diagram:
(a) Piston Stroke (4)
(b) Swept Volume (4)
(c) Clearance volume (4)
(d) Compression ratio (4)
Class 4 (4th Engineer)
MEKM
📅 Mar 2024
Reference Answer
### (a) Piston Stroke (4 Marks)
* **Concept Definition**:
* The piston stroke (often simply referred to as 'stroke') in a reciprocating internal combustion engine is the linear distance traversed by the piston within the cylinder bore, from one extreme position to the other.
* These extreme positions are the **Top Dead Centre (TDC)**, which is the uppermost point of the piston's travel, and the **Bottom Dead Centre (BDC)**, which is the lowermost point of its travel.
* **Concept Definition**:
* The piston stroke (often simply referred to as 'stroke') in a reciprocating internal combustion engine is the linear distance traversed by the piston within the cylinder bore, from one extreme position to the other.
* These extreme positions are the **Top Dead Centre (TDC)**, which is the uppermost point of the piston's travel, and the **Bottom Dead Centre (BDC)**, which is the lowermost point of its travel.
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