Engine Air Exhaust Valve 145701 

An engine's air exhaust valve is a crucial component in the combustion process of an internal combustion engine. The exhaust valve plays a key role in managing the flow of exhaust gases out of the engine cylinders during the exhaust stroke. Here are the main points regarding the engine air exhaust valve:

1. Function:

   • The primary function of the exhaust valve is to open and close to allow the expulsion of burned gases from the combustion chamber after the power stroke.

2. Location:

   • Exhaust valves are located in the cylinder head, usually above the combustion chamber. Each cylinder has at least one exhaust valve.

3. Valve Operation:

   • The exhaust valve opens during the exhaust stroke, allowing the high-pressure exhaust gases to exit the cylinder and flow into the exhaust system. It then closes to seal the combustion chamber during the intake and compression strokes.

4. Material and Construction:

   • Exhaust valves are typically made of heat-resistant materials such as stainless steel or a nickel-based alloy. This is because exhaust valves are exposed to high temperatures due to the hot gases passing through them.

5. Valve Actuation:

   • The movement of the exhaust valve is controlled by the engine's camshaft, which has lobes designed to push against the valve stem, causing it to open and close.

6. Valve Timing:

   • The timing of the exhaust valve opening and closing is critical for engine performance. Proper valve timing ensures that exhaust gases are expelled efficiently, optimizing power and fuel efficiency.

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