valve seat

简明释义

阀座

英英释义

例句

1.Proper alignment of the valve seat is essential for optimal engine performance.

正确对齐阀座对优化发动机性能至关重要。

2.The mechanic inspected the valve seat for any signs of wear.

机械师检查了阀座是否有磨损的迹象。

3.The technician used a special tool to grind the valve seat for a better seal.

技术员使用特殊工具打磨阀座以获得更好的密封效果。

4.A damaged valve seat can lead to engine overheating.

受损的阀座可能导致发动机过热。

5.He replaced the old valve seat with a new one to improve efficiency.

他用新的阀座替换了旧的，以提高效率。

作文

The term valve seat refers to a crucial component in various mechanical systems, particularly in internal combustion engines. The valve seat is the surface against which the valve closes, providing a seal to prevent the escape of gases during the engine's operation. Understanding the function and importance of the valve seat can help in diagnosing engine problems and ensuring optimal performance.In an engine, the valve seat is typically made of durable materials such as hardened steel or cast iron, designed to withstand high temperatures and pressures. When the engine operates, the valves open and close rapidly, and the valve seat must maintain its integrity to ensure that the combustion chamber remains sealed. If the valve seat becomes worn or damaged, it can lead to leaks, reduced engine efficiency, and increased emissions.One common issue related to the valve seat is valve seat recession, which occurs when the seat wears away due to constant impact from the valve. This problem is often exacerbated in engines using unleaded fuel, as lead was previously used to lubricate and protect the valve seat. Mechanics may need to perform a process called 'valve seat cutting' or 'valve seat grinding' to restore the proper shape and function of the valve seat.Additionally, the alignment of the valve seat is critical for the engine's performance. If the valve seat is misaligned, it can cause uneven wear on the valve and lead to premature failure. Regular maintenance and inspections can help identify any issues with the valve seat before they escalate into more serious problems.In summary, the valve seat plays a vital role in the functioning of an engine. It ensures a proper seal during combustion, and any issues with the valve seat can have significant impacts on engine performance and longevity. Understanding the valve seat and its maintenance needs is essential for anyone involved in automotive repair or engine design. By keeping the valve seat in good condition, one can ensure that the engine runs smoothly and efficiently, ultimately leading to better performance and lower emissions. Therefore, it is important to be aware of the signs of wear and to take proactive measures to maintain the valve seat in optimal condition.

术语valve seat指的是各种机械系统中的一个关键组成部分，特别是在内燃机中。valve seat是阀门关闭时接触的表面，提供密封以防止在发动机运行期间气体的逃逸。理解valve seat的功能和重要性有助于诊断发动机问题并确保最佳性能。在发动机中，valve seat通常由耐用材料如硬化钢或铸铁制成，旨在承受高温和高压。当发动机运行时，阀门快速开闭，valve seat必须保持其完整性，以确保燃烧室保持密封。如果valve seat磨损或损坏，可能会导致泄漏、降低发动机效率和增加排放。与valve seat相关的一个常见问题是阀座退缩，这发生在阀座因不断撞击阀门而磨损时。这种问题在使用无铅燃料的发动机中尤为严重，因为铅以前用于润滑和保护valve seat。机械师可能需要执行称为“阀座切割”或“阀座打磨”的过程，以恢复valve seat的适当形状和功能。此外，valve seat的对齐对于发动机的性能至关重要。如果valve seat未对齐，可能会导致阀门磨损不均匀，并导致提前失效。定期维护和检查可以帮助识别valve seat的任何问题，以便在问题升级为更严重的问题之前解决。总之，valve seat在发动机的运作中发挥着至关重要的作用。它确保在燃烧过程中良好的密封，任何与valve seat相关的问题都可能对发动机性能和寿命产生重大影响。了解valve seat及其维护需求，对于任何参与汽车维修或发动机设计的人来说都是至关重要的。通过保持valve seat的良好状态，可以确保发动机平稳高效地运行，最终提高性能并降低排放。因此，了解磨损的迹象并采取主动措施保持valve seat处于最佳状态非常重要。