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
📅 Nov 2023
Reference Answer
### (a) Piston Stroke
**Definition:**
The Piston Stroke ($$S$$) is defined as the linear distance travelled by the piston from its uppermost position, known as Top Dead Centre (TDC), to its lowermost position, known as Bottom Dead Centre (BDC), within the cylinder liner. Conversely, it is also the distance from BDC to TDC. This travel is dictated by the throw of the crankshaft and the length of the connecting rod.
**Detailed Explanation and Significance:**
**Definition:**
The Piston Stroke ($$S$$) is defined as the linear distance travelled by the piston from its uppermost position, known as Top Dead Centre (TDC), to its lowermost position, known as Bottom Dead Centre (BDC), within the cylinder liner. Conversely, it is also the distance from BDC to TDC. This travel is dictated by the throw of the crankshaft and the length of the connecting rod.
**Detailed Explanation and Significance:**
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