admission valve

简明释义

进气阀

英英释义

例句

1.A malfunctioning admission valve can lead to decreased fuel efficiency.

故障的进气阀可能导致燃油效率降低。

2.The mechanic explained that the admission valve controls the airflow into the engine.

机械师解释说，进气阀控制着空气流入发动机的量。

3.We need to replace the admission valve before taking the car on a long trip.

在长途旅行之前，我们需要更换进气阀。

4.The engine's performance improved significantly after we replaced the faulty admission valve.

在我们更换了故障的进气阀后，发动机的性能显著提高。

5.Make sure to check the admission valve for any blockages during routine maintenance.

在例行维护中，请确保检查一下进气阀是否有任何堵塞。

作文

In the world of engineering and mechanics, the term admission valve refers to a crucial component in various types of engines, particularly in internal combustion engines. The admission valve plays a vital role in controlling the flow of air and fuel into the combustion chamber, ensuring that the engine operates efficiently and effectively. Understanding the function and importance of the admission valve can provide insights into how engines work and the principles of thermodynamics that govern their operation.The admission valve is typically located at the top of the engine cylinder and is operated by the camshaft. When the engine is in the intake stroke, the admission valve opens, allowing a mixture of air and fuel to enter the cylinder. This process is critical because it sets the stage for the combustion process that follows. If the admission valve fails to open or close properly, it can lead to a range of issues, including decreased engine performance, increased emissions, and even engine failure.One of the key aspects of the admission valve is its timing. The opening and closing of the valve must be precisely timed with the movements of the piston within the cylinder. This synchronization is achieved through the camshaft, which rotates at half the speed of the crankshaft. As the crankshaft turns, it drives the camshaft, which in turn moves the admission valve in a coordinated manner. This timing is essential for maximizing the efficiency of the engine and ensuring that the correct amount of air-fuel mixture enters the cylinder at the right time.Another important factor to consider is the design of the admission valve. Different engines may use different types of valves, such as poppet valves or rotary valves, each with its own advantages and disadvantages. Poppet valves, for example, are commonly used in most gasoline engines due to their simplicity and effectiveness. On the other hand, rotary valves may be found in some high-performance engines where airflow needs to be optimized for better performance.The maintenance of the admission valve is also crucial for the longevity and reliability of an engine. Regular inspections can help identify any wear or damage to the valve or its components. Issues such as carbon buildup, valve seat wear, or spring fatigue can all affect the performance of the admission valve. Neglecting these problems can lead to more severe engine issues down the line, making it essential for engine owners to stay vigilant about their vehicle's maintenance.In conclusion, the admission valve is an integral part of an engine's operation, playing a significant role in the intake process of the combustion cycle. Its proper functioning ensures that the engine runs smoothly, efficiently, and with minimal emissions. By understanding the importance of the admission valve, engineers and mechanics can better appreciate the complexities of engine design and function, ultimately leading to improved performance and reliability in automotive technology. As we continue to innovate and improve engine designs, the admission valve will remain a key component in the pursuit of efficiency and sustainability in transportation.

在工程和机械的世界中，术语admission valve指的是各种类型发动机中的一个重要组件，特别是在内燃机中。admission valve在控制空气和燃料进入燃烧室的流动方面发挥着至关重要的作用，确保发动机高效、有效地运行。了解admission valve的功能和重要性可以深入了解发动机的工作原理以及支配其操作的热力学原理。admission valve通常位于发动机气缸的顶部，由凸轮轴操作。当发动机处于进气冲程时，admission valve打开，允许空气和燃料的混合物进入气缸。这个过程至关重要，因为它为随后的燃烧过程奠定了基础。如果admission valve未能正确开闭，可能会导致一系列问题，包括发动机性能下降、排放增加甚至发动机故障。admission valve的一个关键方面是其时机。阀门的开闭必须与气缸内活塞的运动精确同步。这种同步是通过凸轮轴实现的，凸轮轴以曲轴的一半速度旋转。当曲轴转动时，它驱动凸轮轴，从而以协调的方式移动admission valve。这种时机对于最大化发动机的效率至关重要，并确保在正确的时间进入气缸正确量的空气-燃料混合物。另一个需要考虑的重要因素是admission valve的设计。不同的发动机可能使用不同类型的阀门，例如阀杆阀或旋转阀，每种都有自己的优缺点。例如，阀杆阀由于其简单性和有效性，通常用于大多数汽油发动机。另一方面，旋转阀可能出现在一些高性能发动机中，在这些发动机中，气流需要优化以获得更好的性能。admission valve的维护对于发动机的耐久性和可靠性也至关重要。定期检查可以帮助识别阀门或其组件的任何磨损或损坏。碳沉积、阀座磨损或弹簧疲劳等问题都可能影响admission valve的性能。忽视这些问题可能导致更严重的发动机问题，因此发动机所有者必须保持警惕，关注自己车辆的维护。总之，admission valve是发动机运行中不可或缺的一部分，在燃烧周期的进气过程中发挥重要作用。其正常运作确保发动机平稳、高效、低排放地运行。通过了解admission valve的重要性，工程师和机械师可以更好地欣赏发动机设计和功能的复杂性，最终提高汽车技术的性能和可靠性。随着我们继续创新和改进发动机设计，admission valve将始终是追求交通运输效率和可持续性的重要组成部分。