Final answer:
The spring loaded valve used in internal combustion engines for the intake and exhaust valves is the poppet valve. It ensures the correct timing for allowing the air-fuel mixture into the cylinder and releasing exhaust gases during the engine cycle.
Step-by-step explanation:
The spring loaded valve commonly used as intake or exhaust valves for internal combustion engines is the poppet valve. This type of valve mechanism is an integral part of the engine's overall operation, playing a crucial role in managing the flow of air and exhaust gases in and out of the combustion chamber during the intake and exhaust strokes. During the intake stroke, the poppet valve opens to allow an air-fuel mixture into the cylinder, whereas during the exhaust stroke, it opens to let out the combustion products.
In internal combustion engines, specifically in the four-stroke gasoline engine and the ideal diesel cycle, the precise opening and closing of the poppet valves ensure the correct timing of the intake of air-fuel mixture and the expulsion of exhaust gases, contributing to the efficiency of the engine cycle.