valve lifter

简明释义

起阀器

英英释义

例句

1.If you hear a ticking noise, it might be a sign that your valve lifter is failing.

如果你听到嘀嗒声，这可能是你的气门挺杆出现故障的迹象。

2.The mechanic replaced the worn-out valve lifter to improve engine performance.

机械师更换了磨损的气门挺杆以提高发动机性能。

3.Regular maintenance can help extend the life of your valve lifter.

定期维护可以帮助延长你的气门挺杆的使用寿命。

4.The new valve lifter design reduces friction and improves fuel efficiency.

新的气门挺杆设计减少了摩擦，提高了燃油效率。

5.During the inspection, the technician noticed a problem with the valve lifter assembly.

在检查过程中，技术员注意到气门挺杆组件存在问题。

作文

In the world of automotive engineering, understanding the various components that contribute to a vehicle's performance is crucial. One such component is the valve lifter, known in Chinese as 气门挺杆. The valve lifter plays a vital role in the operation of an internal combustion engine, acting as a mechanism that opens and closes the engine's valves. This function is essential for the engine to intake air and fuel while expelling exhaust gases effectively.The valve lifter is typically located within the engine's cylinder head, and its primary purpose is to transfer the motion from the camshaft to the valves. When the camshaft rotates, it pushes against the valve lifter, which in turn pushes the valve open. Once the camshaft moves past the peak of the lobe, the valve lifter allows the valve to close again, often aided by a spring mechanism. This precise timing is critical for optimal engine performance, as any delay or malfunction can lead to poor engine efficiency or even damage.There are different types of valve lifters, including solid and hydraulic designs. Solid valve lifters require manual adjustment to maintain the correct clearance between the lifter and the valve, while hydraulic valve lifters automatically adjust themselves based on oil pressure. This self-adjusting feature makes hydraulic valve lifters popular in modern engines, as they reduce maintenance needs and improve reliability.Understanding how the valve lifter operates is also essential when diagnosing engine issues. For instance, if an engine is making a ticking noise, it could be a sign of a faulty valve lifter. This noise often indicates that the lifter is not maintaining proper contact with the valve, which can lead to inefficient engine operation. Mechanics often recommend checking the valve lifter when investigating such noises, as a simple adjustment or replacement can resolve the issue.Moreover, the material and design of the valve lifter can significantly influence an engine's performance. High-performance engines may utilize lightweight materials for their valve lifters to reduce inertia and improve responsiveness. This is particularly important in racing applications where every millisecond counts. Engineers continuously innovate to develop valve lifters that can withstand extreme conditions while providing reliable performance.In conclusion, the valve lifter is an integral part of an internal combustion engine, influencing both its functionality and performance. Understanding the role of the valve lifter helps car enthusiasts and mechanics alike appreciate the complexities of engine design. As technology advances, the evolution of the valve lifter will continue to shape the future of automotive engineering, leading to more efficient and powerful engines. By grasping the significance of the valve lifter, one can gain deeper insights into the workings of vehicles and the innovations that drive them forward.

在汽车工程的世界中，理解构成车辆性能的各种组件至关重要。其中一个组件就是气门挺杆，它在发动机的运作中发挥着重要作用，充当一个打开和关闭发动机气门的机制。这个功能对于发动机有效地吸入空气和燃料，同时排放废气是必不可少的。气门挺杆通常位于发动机的气缸盖内，其主要目的是将凸轮轴的运动传递到气门。当凸轮轴旋转时，它推动气门挺杆，进而推动气门打开。一旦凸轮轴越过峰值，气门挺杆就会让气门再次关闭，通常由弹簧机制协助。这一精确的时机对于最佳的发动机性能至关重要，因为任何延迟或故障都可能导致发动机效率低下甚至损坏。气门挺杆有不同类型，包括固体和液压设计。固体气门挺杆需要手动调整以保持挺杆与气门之间的正确间隙，而液压气门挺杆则根据油压自动调整。这种自我调整的特性使得液压气门挺杆在现代发动机中受到欢迎，因为它们减少了维护需求并提高了可靠性。理解气门挺杆的操作对于诊断发动机问题也至关重要。例如，如果发动机发出滴答声，这可能是气门挺杆故障的迹象。这种噪音通常表明挺杆与气门之间未能保持适当接触，这可能导致发动机运行效率低下。在调查此类噪音时，机械师通常建议检查气门挺杆，因为简单的调整或更换可以解决问题。此外，气门挺杆的材料和设计可以显著影响发动机的性能。高性能发动机可能会使用轻质材料制造其气门挺杆，以减少惯性并提高响应性。这在赛车应用中特别重要，因为每毫秒都至关重要。工程师们不断创新，开发能够承受极端条件同时提供可靠性能的气门挺杆。总之，气门挺杆是内燃发动机的重要组成部分，影响着其功能和性能。理解气门挺杆的角色有助于汽车爱好者和机械师欣赏发动机设计的复杂性。随着技术的进步，气门挺杆的演变将继续塑造汽车工程的未来，导致更高效和更强大的发动机。通过掌握气门挺杆的重要性，人们可以更深入地了解车辆的工作原理以及推动它们前进的创新。