Mechanical Engineering - IC Engines and Nuclear Power Plants - Discussion
Discussion Forum : IC Engines and Nuclear Power Plants - Section 1 (Q.No. 25)
25.
In petrol engine, using a fixed octane rating fuel and fixed compression ratio, supercharging will __________ the knocking tendency.
Discussion:
5 comments Page 1 of 1.
Sourav said:
1 decade ago
Why is the knocking tendency increasing ? Someone explain please.
Sakthi said:
1 decade ago
Since the supercharging is done the C.R value increases but the fixed octane number remains same. So the new CR value is more for fixed octane rating fuel, it leads to increase in knocking.
Aftab Ahmad said:
1 decade ago
Actually with supercharging cylinder pressure increases so difference between knocking pressure and cylinder safe pressure (which is below knocking pressure) decreases so knocking tendency increases.
Narayan said:
9 years ago
The supercharging causes the temperature and pressure rise giving diesel engine to knock.
Pradeep gk said:
8 years ago
Superchaging increses temperature and pressure of mixture this causes auto ignition of end charge.
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