combustion knock

简明释义

燃烧爆震

英英释义

例句

1.The mechanic explained that combustion knock 燃烧敲击 can cause serious damage to the engine if not addressed promptly.

机械师解释说，燃烧敲击 combustion knock 如果不及时处理，可能会对发动机造成严重损害。

2.During the test drive, I noticed a distinct combustion knock 燃烧敲击 when accelerating rapidly.

在试驾过程中，我注意到在快速加速时有明显的燃烧敲击 combustion knock。

3.The car's manual provided guidelines on how to recognize combustion knock 燃烧敲击 and what steps to take.

汽车手册提供了如何识别燃烧敲击 combustion knock以及应采取的步骤的指南。

4.To prevent combustion knock 燃烧敲击, it's important to use high-octane fuel in performance vehicles.

为了防止燃烧敲击 combustion knock，在高性能车辆中使用高辛烷值燃料是很重要的。

5.Engine tuning can help reduce combustion knock 燃烧敲击 and improve overall vehicle performance.

发动机调校可以帮助减少燃烧敲击 combustion knock并改善整体车辆性能。

作文

Understanding the phenomenon of combustion knock is essential for anyone interested in automotive engineering or the mechanics of internal combustion engines. Combustion knock, also known as engine knock or pinging, refers to the abnormal combustion of fuel-air mixtures in an internal combustion engine. This phenomenon occurs when the fuel ignites prematurely in the engine cylinder, leading to a rapid increase in pressure and temperature. The result is a knocking or pinging sound that can be detrimental to engine performance and longevity.The primary cause of combustion knock is the use of low-octane fuel in high-compression engines. Higher compression ratios are designed to improve efficiency and power output, but they also make the engine more susceptible to knocking. When the fuel mixture ignites too early, it creates shock waves that can damage engine components such as pistons, cylinder heads, and spark plugs. Therefore, understanding the factors that contribute to combustion knock is crucial for maintaining engine health.Several factors can lead to combustion knock. One major factor is the quality of the fuel used. Higher octane fuels are formulated to resist knocking and allow for more efficient combustion. For instance, premium gasoline has a higher octane rating compared to regular gasoline, making it less likely to cause knocking in high-performance engines. Additionally, engine tuning plays a significant role. If an engine is not properly tuned, it may run too lean or too rich, which can exacerbate the risk of combustion knock.Another contributing factor is engine temperature. Overheating can lead to increased cylinder temperatures, which can trigger premature ignition of the fuel-air mixture. This is why proper cooling systems are vital in preventing combustion knock. Moreover, the design of the combustion chamber can influence the likelihood of knocking. Engines with sharp edges or poor airflow may create hot spots that ignite the fuel prematurely.To mitigate combustion knock, manufacturers have developed various technologies. One common solution is the implementation of knock sensors, which detect knocking and adjust the engine’s timing to prevent it. This technology allows for real-time adjustments, ensuring that the engine operates efficiently without knocking. Additionally, advancements in fuel formulation have led to the development of additives that enhance fuel stability and reduce the likelihood of combustion knock.In conclusion, combustion knock is a critical issue in the realm of internal combustion engines. Understanding its causes and effects is vital for both automotive enthusiasts and professionals alike. By using high-octane fuels, ensuring proper engine tuning, and utilizing modern technology, the risks associated with combustion knock can be significantly reduced. As the automotive industry continues to evolve, addressing this phenomenon will remain a priority to enhance engine performance and durability.

理解燃烧敲击现象对于任何对汽车工程或内燃机机械感兴趣的人来说都是至关重要的。燃烧敲击，也称为发动机敲击或嗡嗡声，是指在内燃机中燃料-空气混合物的异常燃烧。这种现象发生在燃料过早点燃于发动机气缸内，导致压力和温度迅速升高。结果是产生一种敲击或嗡嗡的声音，这可能对发动机性能和寿命造成不利影响。导致燃烧敲击的主要原因是使用低辛烷值燃料在高压缩比发动机中。较高的压缩比旨在提高效率和功率输出，但它们也使发动机更容易受到敲击。当燃料混合物过早点燃时，会产生冲击波，可能损坏发动机组件，如活塞、气缸盖和火花塞。因此，理解导致燃烧敲击的因素对于维护发动机健康至关重要。导致燃烧敲击的几个因素。一个主要因素是所用燃料的质量。高辛烷值燃料被设计成抗敲击，并允许更高效的燃烧。例如，优质汽油相比于普通汽油具有更高的辛烷值，使其在高性能发动机中不太可能引起敲击。此外，发动机调校也起着重要作用。如果发动机调校不当，可能会运行得过瘦或过浓，这可能加剧燃烧敲击的风险。另一个促成因素是发动机温度。过热可能导致气缸温度升高，从而触发燃料-空气混合物的过早点燃。这就是为什么适当的冷却系统在防止燃烧敲击中至关重要。此外，燃烧室的设计也会影响敲击的可能性。具有尖锐边缘或气流不良的发动机可能会产生热点，从而过早点燃燃料。为了减轻燃烧敲击，制造商开发了各种技术。一种常见的解决方案是实施敲击传感器，它可以检测敲击并调整发动机的点火时机以防止其发生。这项技术允许实时调整，确保发动机在没有敲击的情况下高效运行。此外，燃料配方的进步导致了增强燃料稳定性并减少燃烧敲击可能性的添加剂的发展。总之，燃烧敲击是内燃机领域的一个关键问题。理解其原因和影响对于汽车爱好者和专业人士来说都是至关重要的。通过使用高辛烷值燃料、确保适当的发动机调校以及利用现代技术，可以显著降低与燃烧敲击相关的风险。随着汽车工业的不断发展，解决这一现象将仍然是提升发动机性能和耐用性的优先事项。