valve stem

简明释义

阀杆

英英释义

例句

1.To avoid tire damage, always check the valve stem for any signs of wear.

为避免轮胎损坏，始终检查阀杆是否有磨损迹象。

2.If the valve stem is leaking, you may need to add more air to your tire frequently.

如果阀杆漏气，你可能需要经常给轮胎充气。

3.When replacing a tire, don’t forget to inspect the valve stem for any defects.

更换轮胎时，不要忘记检查阀杆是否有缺陷。

4.The mechanic replaced the broken valve stem to ensure the tire holds air properly.

机械师更换了损坏的阀杆以确保轮胎能正确保持气压。

5.During the inspection, the technician found a cracked valve stem that needed immediate attention.

在检查过程中，技术人员发现了一根需要立即处理的裂纹阀杆。

作文

In the world of mechanical engineering and automotive design, various components play a crucial role in ensuring the efficient operation of machines. One such component that often goes unnoticed is the valve stem, which is an integral part of an engine's valve assembly. The valve stem connects the valve head to the actuator mechanism, allowing for the precise opening and closing of the valve at the right moments during the engine's cycle. Understanding the function and importance of the valve stem can provide insights into how engines operate and why regular maintenance is essential.The valve stem serves as a support structure for the valve itself. When the engine is running, the camshaft rotates and pushes against the valve stem, causing the valve to open. This action allows air and fuel to enter the combustion chamber, where they mix and ignite to produce power. Once the combustion process is complete, the valve must close tightly to retain the pressure within the chamber. The valve stem plays a critical role in this process, as it ensures that the valve remains securely in place and functions smoothly.One of the key attributes of a well-designed valve stem is its ability to withstand high temperatures and pressures. During operation, the engine generates significant heat, which can affect the performance of various components, including the valve stem. Therefore, manufacturers often use materials such as steel or titanium, which have high strength-to-weight ratios and excellent thermal resistance properties. These materials help ensure that the valve stem does not warp or degrade over time, maintaining the engine's efficiency and longevity.Another important aspect of the valve stem is its lubrication. Proper lubrication reduces friction between the valve stem and the valve guide, allowing for smoother movement and preventing premature wear. Engine oil circulates through the engine and coats the valve stem, ensuring that it operates effectively. Regular oil changes and maintenance are crucial to keeping the valve stem and other engine components in good working condition.In addition to its mechanical functions, the valve stem can also be an indicator of an engine's overall health. Mechanics often inspect the valve stem during routine maintenance checks. If they notice any signs of damage, such as bending or excessive wear, it may signal underlying issues within the engine, such as improper timing or insufficient lubrication. Addressing these problems early can prevent more severe damage and costly repairs down the line.In conclusion, the valve stem is a vital component of an engine's valve assembly, playing a crucial role in the engine's performance and efficiency. Its ability to withstand high temperatures and pressures, combined with the need for proper lubrication, makes it essential for maintaining engine health. Understanding the significance of the valve stem helps car owners appreciate the importance of regular maintenance and timely inspections, ultimately leading to a more reliable and efficient vehicle. By taking care of components like the valve stem, we can ensure that our engines continue to perform optimally for years to come.

在机械工程和汽车设计的世界中，各种组件在确保机器高效运转方面发挥着至关重要的作用。其中一个常常被忽视的组件是阀杆，它是发动机阀门组件的重要组成部分。阀杆将阀头与执行机制连接起来，允许在发动机循环的正确时刻精确地打开和关闭阀门。理解阀杆的功能和重要性可以提供对发动机如何运作以及定期维护为何至关重要的洞察。阀杆作为阀门本身的支撑结构。当发动机运行时，凸轮轴旋转并推动阀杆，使阀门打开。这一动作允许空气和燃料进入燃烧室，在那里它们混合并点燃以产生动力。一旦燃烧过程完成，阀门必须紧闭，以保持腔内的压力。阀杆在这一过程中发挥着关键作用，因为它确保阀门安全到位并顺畅运作。一个设计良好的阀杆的关键属性之一是其能够承受高温和高压。在操作过程中，发动机会产生显著的热量，这可能会影响各种组件的性能，包括阀杆。因此，制造商通常使用钢或钛等材料，这些材料具有高强度重量比和优异的耐热性能。这些材料有助于确保阀杆不会因时间的推移而变形或降解，从而保持发动机的效率和耐用性。阀杆的另一个重要方面是其润滑。适当的润滑减少了阀杆与阀导向之间的摩擦，允许更平滑的运动并防止过早磨损。发动机油在发动机中循环并涂抹在阀杆上，确保其有效运作。定期更换机油和维护对于保持阀杆和其他发动机组件的良好工作状态至关重要。除了机械功能外，阀杆还可以作为发动机整体健康状况的指示器。机械师通常在例行维护检查中检查阀杆。如果他们注意到任何损坏的迹象，例如弯曲或过度磨损，这可能表明发动机内部存在潜在问题，例如时机不当或润滑不足。及早解决这些问题可以防止更严重的损害和昂贵的维修。总之，阀杆是发动机阀门组件的重要组成部分，在发动机的性能和效率中发挥着至关重要的作用。它承受高温和高压的能力，以及对适当润滑的需求，使其对维护发动机健康至关重要。理解阀杆的重要性有助于车主认识到定期维护和及时检查的重要性，从而最终导致车辆更可靠和高效。通过照顾好像阀杆这样的组件，我们可以确保我们的发动机在未来几年继续最佳运转。