top dead center

简明释义

上死点

英英释义

例句

1.When tuning the engine, ensure the valves are closed at top dead center.

调校发动机时，确保在上死点时阀门关闭。

2.To adjust the ignition timing, you need to find the top dead center of the engine.

要调整点火时机，你需要找到发动机的上死点。

3.You should check the cylinder pressure when the piston is at top dead center.

当活塞处于上死点时，你应该检查气缸压力。

4.The mechanic marked the crankshaft at top dead center for reference.

机械师在曲轴上标记了上死点以供参考。

5.The piston reaches top dead center during the compression stroke.

活塞在压缩行程中达到上死点。

作文

In the world of automotive engineering, understanding various technical terms is crucial for both professionals and enthusiasts. One such term that often comes up in discussions about engine performance is top dead center. This phrase refers to a specific position of the piston within the cylinder of an internal combustion engine. When the piston reaches this position, it is at its highest point in the cylinder, meaning that the volume of the combustion chamber is at its minimum. This is a critical moment in the engine cycle, as it marks the end of the compression stroke and the beginning of the power stroke. The significance of top dead center cannot be overstated. For instance, during the compression stroke, the air-fuel mixture is compressed to a point where it can ignite efficiently, producing the power necessary to drive the vehicle. If the timing is off, and the piston does not reach top dead center at the right moment, it can lead to poor engine performance, knocking, or even engine failure. Moreover, tuning an engine involves adjusting various components to ensure that the piston reaches top dead center at the optimal time. Mechanics often use specialized tools, such as a timing light, to check the ignition timing in relation to the position of the piston. A well-timed engine will fire just as the piston reaches top dead center, maximizing efficiency and power output. In addition to its role in engine performance, top dead center is also important for maintenance and repair. When performing tasks like replacing spark plugs or timing belts, mechanics need to know how to accurately locate top dead center. This ensures that they can perform their work effectively without causing any damage to the engine. Understanding top dead center is not limited to professionals; car enthusiasts can benefit greatly from this knowledge as well. Many hobbyists enjoy modifying their vehicles for better performance. Knowing how to adjust the timing and ensure the engine reaches top dead center at the right moment can make a significant difference in the overall performance of their cars. In conclusion, the term top dead center is not just a piece of jargon; it is a fundamental concept in the field of automotive engineering. Whether you are a mechanic, an engineer, or simply a car enthusiast, grasping the significance of top dead center can enhance your understanding of how engines work and improve your ability to maintain and modify them effectively. As technology continues to evolve, staying informed about these essential terms will help you keep pace with advancements in automotive engineering. Ultimately, mastering the concept of top dead center can lead to better engine performance, more efficient repairs, and a deeper appreciation for the intricate workings of internal combustion engines.

在汽车工程的世界中，理解各种技术术语对专业人士和爱好者都至关重要。其中一个常常出现在关于发动机性能讨论中的术语是顶死点。这个短语指的是内燃机气缸内活塞的特定位置。当活塞达到这个位置时，它处于气缸的最高点，这意味着燃烧室的体积达到了最小值。这是发动机循环中的一个关键时刻，因为它标志着压缩行程的结束和动力行程的开始。顶死点的重要性不容小觑。例如，在压缩行程中，空气-燃料混合物被压缩到一个可以高效点燃的程度，从而产生驱动车辆所需的动力。如果时机不对，活塞没有在正确的时刻达到顶死点，可能会导致发动机性能差、敲击声甚至发动机故障。此外，调校发动机涉及调整各种组件，以确保活塞在最佳时机达到顶死点。机械师通常使用专用工具，如点火时光表，检查点火时机与活塞位置的关系。一个时机良好的发动机会在活塞达到顶死点时点火，从而最大化效率和功率输出。除了在发动机性能中的作用，顶死点在维护和修理中也很重要。在更换火花塞或正时皮带等任务时，机械师需要准确找到顶死点。这确保他们能够有效地进行工作，而不会对发动机造成任何损害。了解顶死点不仅限于专业人士；汽车爱好者也能从中受益匪浅。许多爱好者喜欢改装他们的车辆以提高性能。知道如何调整时机并确保发动机在正确的时刻达到顶死点，可以显著改善他们汽车的整体性能。总之，术语顶死点不仅仅是一种行话；它是汽车工程领域的一个基本概念。无论您是机械师、工程师还是仅仅是汽车爱好者，掌握顶死点的重要性都能增强您对发动机工作原理的理解，并提高您有效维护和改装它们的能力。随着技术的不断发展，了解这些基本术语将帮助您跟上汽车工程的进步。最终，掌握顶死点的概念可以带来更好的发动机性能、更高效的维修以及对内燃机复杂工作原理的更深刻理解。