Intake Valves:
* Open: Allow fresh air and fuel mixture to enter the combustion chamber during the intake stroke.
* Closed: Prevent exhaust gases from leaking into the intake manifold during the compression and power strokes.
Exhaust Valves:
* Open: Allow burnt exhaust gases to escape from the combustion chamber during the exhaust stroke.
* Closed: Prevent fresh air and fuel mixture from entering the exhaust manifold during the intake and compression strokes.
Overall, the primary functions of engine valves are:
* Timing: Controlling the timing of when air and exhaust gases enter and leave the combustion chamber, which is essential for optimal engine performance.
* Efficiency: Ensuring a proper mixture of air and fuel enters the combustion chamber, and exhaust gases are expelled effectively.
* Power: Allowing the engine to operate at different speeds and loads by controlling the volume of air and fuel entering the combustion chamber.
Here's a simple analogy:
Imagine a bicycle pump. The valves in the pump control the flow of air in and out of the cylinder. The intake valve opens to draw air into the cylinder, and the exhaust valve opens to release the compressed air. Similarly, engine valves control the flow of air and exhaust gases in the combustion chamber to power the engine.
Important Note: Engine valves are precision components subjected to extreme heat and pressure. They require regular maintenance and inspection to ensure optimal engine performance and prevent potential engine damage.
