piston ring

简明释义

活塞环

英英释义

例句

1.When rebuilding the engine, it's crucial to install new piston rings.

在重建发动机时，安装新的活塞环至关重要。

2.The mechanic replaced the piston ring to improve engine performance.

机械师更换了活塞环以提高发动机性能。

3.The piston ring creates a seal between the piston and the cylinder wall.

活塞环在活塞和气缸壁之间形成密封。

4.A worn piston ring can lead to excessive oil consumption.

磨损的活塞环会导致过度消耗机油。

5.If the piston ring is damaged, it can cause a loss of compression.

如果活塞环损坏，可能会导致压缩失效。

作文

The engine is often considered the heart of a vehicle, and within this complex machine lies a crucial component known as the piston ring. The piston ring is a metallic ring that fits into a groove on the outer diameter of a piston. Its primary function is to create a seal between the piston and the cylinder wall, preventing the escape of gases during combustion and ensuring that oil does not enter the combustion chamber. This sealing ability is vital for maintaining engine efficiency and performance.In a typical internal combustion engine, the piston ring plays a significant role in the overall operation. When fuel and air are ignited in the combustion chamber, the pressure generated pushes the piston down, creating power for the vehicle. Without the piston ring, the high-pressure gases would leak past the piston, resulting in a loss of power and increased fuel consumption. This leakage can also lead to oil burning, which can produce harmful emissions and damage the engine over time.There are generally two types of piston rings: compression rings and oil control rings. Compression rings are located at the top of the piston and are designed to withstand high pressures. They help maintain the compression needed for efficient combustion. On the other hand, oil control rings are found below the compression rings and are responsible for regulating the amount of oil that coats the cylinder walls. By controlling this oil film, the piston ring ensures that the engine operates smoothly while minimizing friction and wear.Over time, piston rings can wear out due to the harsh conditions inside an engine. Factors such as high temperatures, excessive pressure, and the presence of contaminants can accelerate this wear. When piston rings become worn, they may no longer create an effective seal, leading to reduced engine performance, increased oil consumption, and higher emissions.To maintain optimal engine performance, it is essential to monitor the condition of the piston ring. Regular maintenance, including oil changes and inspections, can help ensure that the piston rings remain in good condition. In some cases, if the piston rings are significantly worn, they may need to be replaced. This process typically involves disassembling the engine, which can be labor-intensive and costly.In conclusion, the piston ring is a small yet vital component of an engine that plays a significant role in its efficiency and performance. Understanding the function and importance of the piston ring can help vehicle owners appreciate the complexities of their engines and the necessity of regular maintenance. By taking care of this critical part, one can ensure that their vehicle runs smoothly and efficiently for years to come.

发动机通常被认为是车辆的心脏，而在这台复杂的机器中，有一个至关重要的组件被称为活塞环。活塞环是一个金属环，适合于活塞外径的凹槽中。它的主要功能是在活塞和气缸壁之间形成密封，防止燃烧过程中气体的逸出，并确保油不会进入燃烧室。这种密封能力对于维持发动机的效率和性能至关重要。在典型的内燃机中，活塞环在整体操作中扮演着重要角色。当燃料和空气在燃烧室点燃时，产生的压力推动活塞向下，产生车辆所需的动力。如果没有活塞环，高压气体将会泄漏到活塞周围，从而导致动力损失和燃料消耗增加。这种泄漏还可能导致油烧毁，从而产生有害排放并随着时间推移损坏发动机。通常有两种类型的活塞环：压缩环和油控制环。压缩环位于活塞顶部，旨在承受高压。它们帮助维持高效燃烧所需的压缩。另一方面，油控制环位于压缩环下方，负责调节涂覆气缸壁的油量。通过控制这一油膜，活塞环确保发动机平稳运行，同时最小化摩擦和磨损。随着时间的推移，由于发动机内部的恶劣条件，活塞环可能会磨损。高温、过高的压力以及污染物的存在等因素都可能加速这种磨损。当活塞环磨损严重时，它们可能不再形成有效的密封，导致发动机性能下降、油耗增加和排放增高。为了保持最佳的发动机性能，监测活塞环的状况至关重要。定期维护，包括换油和检查，可以帮助确保活塞环保持良好状态。在某些情况下，如果活塞环严重磨损，可能需要更换。这一过程通常涉及拆解发动机，可能是劳动密集型且费用高昂。总之，活塞环是发动机中一个小但至关重要的组件，对其效率和性能起着重要作用。理解活塞环的功能和重要性可以帮助车辆拥有者欣赏他们发动机的复杂性以及定期维护的必要性。通过照顾这个关键部分，可以确保他们的车辆在未来几年内平稳高效地运行。