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Mechanical Engineering - IC Engines and Nuclear Power Plants - Discussion

Discussion Forum : IC Engines and Nuclear Power Plants - Section 3 (Q.No. 44)
IC Engines and Nuclear Power Plants
44.
The increase in intake temperature of internal combustion engines will __________ efficiency.
have no effect on
increase
decrease
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
13 comments Page 1 of 2.
KUKKU said:   1 decade ago
Depends upon engines whether si or ci.
AJAY said:   1 decade ago
But increase in temp should increase efficiency.
Pratik said:   9 years ago
The efficiency should be increased.
Yogesh said:   8 years ago
It increases.
Kartik khandelwal said:   8 years ago
Yes, It will be increased.
S Bera said:   8 years ago
It is different for diesel and Petrol engine.
Pradeep gk said:   8 years ago
1) If increases intake temperature density of air decrease so less air is available for combustion of fuel.

2) if increases intake temperature then the more work is required to compress the air Resulting efficiency is decreases.
Hriday rudra said:   6 years ago
For that purpose, we are using charged air cooler and aftercooler to gain more oxygen density. It will decrease efficiency.

So, the correct Answer is C.
Keno Teshome said:   6 years ago
It depends on the types of engine!.

For Petrol engine increment of intake, temperature causes knocking and decreases the efficiency of the engine.

For Diesel or Dual engine, it is very important to increase the intake temperature of air for better efficiency of the engine!
Vaishnavi said:   6 years ago
The efficiency of otto cycle=1-(T4-T1)/(T3-T2).

IF T1 decreases then efficiency decreases.
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