Answer :
The camshaft is responsible for regulating the opening and closing of the exhaust valve in an engine. It is connected to the crankshaft and uses cam profiles to control the valve timings during the combustion cycle.
The component that regulates the timing of the opening and closing of the exhaust valve is the camshaft. Essentially, the crankshaft is connected to the camshaft which in turn dictates the movements of the camshaft at a fixed ratio. The cams on the camshaft interact with followers to open and close the valves at specific intervals in the combustion cycle. Specifically, during the constant-volume exhaust phase and the isobaric compression phase, the camshaft ensures the exhaust valve is opened to allow combustion gases to escape and then closes to enable the next phase of intake of fresh air-fuel mixture.
