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VALVES & VALVE SEATS GUIDE

机译：阀门和阀座指南

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摘要

The relationship between various engine components is well-recognized, and the valves and valve seats are no exception. The valves are the choke point past which all the air that flows in and out of the engine must circumnavigate. Valves that increase air flow and allow the engine to rev higher will increase volumetric efficiency and horsepower. But for the valves, being closed is just as important as being open. The valve seats are a critical engine component because they are the foundation of the valvetrain. The seats provide a surface for the valves to seal against when they close so there's no loss of compression or pressure from the combustion chamber. The seats also help cool the valves by conducting heat away from valves into the cylinder head.
机译：各种发动机部件之间的关系已广为人知，气门和气门座也不例外。气门是节流点，所有流入和流出发动机的空气都必须经过这个节流点。增大空气流量并允许发动机更高转速的气门将提高容积效率和马力。但是对于阀门而言，关闭与打开同样重要。气门座是发动机的关键部件，因为它们是气门机构的基础。阀座为气门关闭时提供了一个密封的表面，因此不会因燃烧室造成压缩或压力损失。阀座还通过将热量从气门传导到气缸盖中来帮助冷却气门。

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