Mechanical Engineering - IC Engines and Nuclear Power Plants - Discussion

At the end of the exhaust, the temperature of the cylinder is high. At the beginning of suction stroke the fresh air enters the cylinder (low temperature) and by the end of the suction stroke, the intake fresh air becomes hot (high temperature) why? Because it comes in contact with cylinder wall and gets warm and warm until the suction ends. Also by T-S diagram, it is clearly shown that minimum temperature is at the beginning of the suction stroke.

So, the answer is option A.

At the end of suction stroke the intake air and fuel temperature will be less so according to my opinion the option B is correct.

In the TS diagram, beginning of compression Temperature in the minimum that is the end of suction.

Answer B is 100% correct. It's because when suction stroke begin, the temp of incoming air is high due to the high temp of intake manifold. But as the suction is completed, the P decrease inside the cylinder which lead to reduction in temperature.

B is the right answer.

Please tell me, which is the final answer?

According to me, option B is correct.

I agree @Muhammad Waqas.

Answer A is correct.

Nice explained @Muhammad Waqas.