Mechanical Engineering - Thermodynamics - Discussion

Discussion Forum : Thermodynamics - Section 3 (Q.No. 27)
27.
The compression ratio is the ratio of
swept volume to total volume
total volume to swept volume
swept volume to clearance volume
total volume to clearance volume
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
6 comments Page 1 of 1.

Rashid Khan Kakar said:   4 years ago
Total v =s v + c v.
So, total v/c v =compression ratio.
(1)

Ajay kumar said:   6 years ago
Total volume = Vc+Vs.

Where Vc= Clearance volume.
Vs= Swept volume.
Compression ratio (r) = Total.
volume/clearance volume.
(1)

Sivaji G said:   8 years ago
When the piston has moved up to the top of its stroke inside the cylinder, and the remaining volume inside the head or combustion chamber has been reduced to 100 cc, then the compression ratio would be proportionally described as 1000:100, or with fractional reduction, a 10:1 compression ratio.

So in short, Compression ratio = total volume/clearance volume.

Raj said:   8 years ago
Please clarify it.

Vishwajeet said:   1 decade ago
Compression ratio = Total volume/Swept volume.

Vinoth said:   1 decade ago
Compression ratio = Total volume/Clearance volume.

Total volume-Clearance volume = Swept volume.

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