Mechanical Engineering - IC Engines and Nuclear Power Plants - Discussion
Discussion Forum : IC Engines and Nuclear Power Plants - Section 1 (Q.No. 3)
3.
In a four stroke cycle, the minimum temperature inside the engine cylinder occurs at the
Discussion:
58 comments Page 3 of 6.
Jitendra Kumar Verma said:
6 years ago
For working fluid temperature is minimum at beginning of suction stroke.
For other things like piston, cylinder head, resedual exhaust gases temperature is minimum at the end of suction stroke.
For other things like piston, cylinder head, resedual exhaust gases temperature is minimum at the end of suction stroke.
Manish yadav said:
1 decade ago
I think A is correct because at the beginning of suction stroke volume is less than at end of suction stroke but pressure is same so as per PV=nRT temp. is min. at beginning of suction stroke.
Vineeshkumar said:
5 years ago
Fresh charge with room temp is admitted to the cylinder in the suction stroke. As much as fresh charge better it cools down the cylinder by absorbing heat. So, that temperature decreases.
Yogesh T. said:
9 years ago
I think option A is correct. Because at the beginning of suction stroke air temperature is low. At the end of suction, air temp increase as the air will be in contact with hot cylinder.
Srinibash said:
1 decade ago
A is correct because as suction stroke completes some fresh charge is already in while the cylinder is about to suck.
So its due to the fresh charges that the temperature is minimum.
So its due to the fresh charges that the temperature is minimum.
Segupratheek said:
1 decade ago
He tells the minimum temperature means the ends of suction stroke the piston will comes from TDC to BDC. Because of the friction the minimum heat will be generated. The answer is B.
NIKHILJOSHTE said:
1 decade ago
I think answer B is correct. The inside surface area of cylinder is still hot at the beginning of suction some heat will be transfer to the air by convection at the end of suction.
Swasthika kulamarva said:
1 decade ago
I don't think PV=nRT is valid for open systems like engines. It is valid for only closed systems i.e. until inlet and exhaust valves are closed. So, answer is B according to me.
Aditya s nimje said:
1 decade ago
I think B is the correct answer because, end of the suction stroke fresh air will be come in to the cylinder and which decrease the temp.of cylinder.
Harsh said:
1 decade ago
Option B seems to be more appropriate because the fresh air cools the cylinder and reduces the temperature resulting minimum temperature.
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