What is the Principle of Valves?
2 Answers
The principle of valves mainly involves the crankshaft rotating to drive the piston to move up and down in the cylinder, and driving the camshaft through a chain or belt. Then, the cam lobes of the camshaft push the valves to control their opening and closing. Below is relevant information about valves: 1. Valves are divided into three parts: the valve head, valve seat, and valve stem. 2. The valve seat and valve seat ring together form a functional unit. 3. The valve head refers to the entire lower area of the valve, which includes the valve face and inner fillet. This area bears the forces generated by combustion pressure. 4. Valves are mainly categorized into single-metal valves, bimetallic valves, and hollow valves. 5. Whether a valve is made of one or multiple materials, or whether it is hollow or solid, its structure is fundamentally the same.
The valve is a crucial component in a car engine, primarily responsible for opening and closing to control the intake and exhaust in the combustion chamber. Take the intake valve, for example—when it opens, it allows the air-fuel mixture to be drawn into the cylinder, a process that starts as soon as the engine runs. The exhaust valve, on the other hand, does the opposite, opening to expel the waste gases after combustion. This entire process is driven by the camshaft, which synchronizes with the piston's up-and-down movement like a dance. If a valve gets stuck or doesn't seal properly, the engine will consume more fuel, lose power, and make rattling noises. I think understanding this before learning to drive is quite useful, as it directly affects performance and environmental impact. So, during routine checks, remember to listen for unusual sounds and prevent carbon buildup from clogging it. Regular vehicle maintenance can help extend its lifespan.
