Otto cycle

简明释义

等容燃烧循环

英英释义

例句

1.Engineers often compare the performance of an engine using the Otto cycle 奥托循环 with that of a diesel engine.

工程师们常常将使用奥托循环的发动机性能与柴油发动机进行比较。

2.The Otto cycle 奥托循环 is named after Nikolaus Otto, who invented the first successful internal combustion engine.

奥托循环以尼古拉斯·奥托命名，他发明了第一台成功的内燃机。

3.Understanding the Otto cycle 奥托循环 helps mechanics troubleshoot engine issues effectively.

理解奥托循环有助于机械师有效地排除发动机故障。

4.In a typical Otto cycle 奥托循环, the air-fuel mixture is compressed before ignition.

在典型的奥托循环中，空气和燃料混合物在点火前被压缩。

5.The efficiency of the Otto cycle 奥托循环 is a key factor in designing modern gasoline engines.

现代汽油发动机设计中，奥托循环的效率是一个关键因素。

作文

The Otto cycle is a fundamental thermodynamic cycle that serves as the basis for the operation of many internal combustion engines, particularly those found in gasoline-powered vehicles. Named after Nikolaus Otto, who invented the first practical four-stroke engine in the late 19th century, the Otto cycle describes the process by which fuel and air are mixed, compressed, ignited, and then expelled from the engine. Understanding this cycle is essential for anyone interested in automotive engineering or the mechanics of engines.The Otto cycle consists of four distinct processes: intake, compression, power, and exhaust. During the intake phase, the engine draws in a mixture of air and fuel through the intake valves. This mixture is crucial because it determines the efficiency and power output of the engine. Once the piston moves down to the bottom of the cylinder, the intake valves close, and the compression phase begins.In the compression phase, the piston moves upward, compressing the air-fuel mixture. This compression increases the temperature and pressure of the mixture, making it more volatile and ready for ignition. The higher the compression ratio, the more efficient the engine can be. However, if the compression is too high, it can lead to knocking, which can damage the engine.Next comes the power phase, where the spark plug ignites the compressed air-fuel mixture. This ignition causes a rapid expansion of gases, pushing the piston down and generating power. This is the stage where the engine produces its work, converting chemical energy from the fuel into mechanical energy that drives the vehicle.Finally, the exhaust phase occurs when the piston moves back up, expelling the burnt gases through the exhaust valves. This phase is critical for maintaining engine efficiency, as any leftover exhaust gases can reduce performance and increase emissions.The Otto cycle is often contrasted with the Diesel cycle, which operates under different principles, primarily involving auto-ignition without a spark plug. While both cycles are used in internal combustion engines, the Otto cycle is typically associated with lighter vehicles and offers smoother operation compared to the Diesel cycle.One of the key advantages of the Otto cycle is its ability to operate efficiently at lower speeds, making it ideal for city driving. Additionally, advancements in technology have allowed for improvements in fuel injection systems and engine management, further enhancing the performance of engines operating on the Otto cycle.Despite its advantages, the Otto cycle also has some limitations. For instance, it tends to be less fuel-efficient than the Diesel cycle, especially at high loads. Furthermore, the reliance on spark plugs makes it susceptible to misfiring, which can lead to increased emissions and reduced performance.In conclusion, the Otto cycle is an essential concept in the field of automotive engineering. Its understanding is crucial for designing and optimizing internal combustion engines. As we continue to innovate and seek more efficient energy sources, the principles of the Otto cycle will remain relevant, even as the industry shifts towards electric and hybrid vehicles. By comprehending the intricacies of the Otto cycle, engineers can develop better engines that meet the demands of modern transportation while minimizing environmental impact.

奥托循环是一个基本的热力学循环，作为许多内燃机（特别是汽油动力车辆）运作的基础。它以尼古劳斯·奥托的名字命名，他在19世纪晚期发明了第一台实用的四冲程发动机。奥托循环描述了燃料和空气混合、压缩、点燃，然后从发动机中排出的过程。理解这个循环对于任何对汽车工程或发动机机械感兴趣的人来说都是至关重要的。奥托循环包括四个不同的过程：进气、压缩、功率和排气。在进气阶段，发动机通过进气阀吸入空气和燃料的混合物。这种混合物至关重要，因为它决定了发动机的效率和功率输出。一旦活塞移动到气缸底部，进气阀关闭，压缩阶段开始。在压缩阶段，活塞向上移动，压缩空气-燃料混合物。这种压缩增加了混合物的温度和压力，使其更具挥发性并准备点燃。压缩比越高，发动机的效率就越高。然而，如果压缩过高，可能会导致敲击，这会损坏发动机。接下来是功率阶段，此时火花塞点燃压缩的空气-燃料混合物。这种点燃引起气体的快速膨胀，推动活塞向下运动并产生功率。这是发动机产生工作的阶段，将燃料中的化学能转化为驱动车辆的机械能。最后，排气阶段发生，当活塞再次向上移动，通过排气阀排出燃烧后的气体。这个阶段对于保持发动机效率至关重要，因为任何残留的废气都可能降低性能并增加排放。奥托循环通常与柴油循环进行对比，后者在不同的原理下运作，主要涉及无火花塞的自燃。虽然这两种循环都用于内燃机，但奥托循环通常与轻型车辆相关，并且相比柴油循环提供更平稳的操作。奥托循环的一个主要优点是它能够在较低速度下高效运行，使其非常适合城市驾驶。此外，技术的进步使燃油喷射系统和发动机管理的改进成为可能，进一步增强了基于奥托循环的发动机性能。尽管有其优点，但奥托循环也存在一些局限性。例如，它在高负载下往往比柴油循环效率低。此外，依赖火花塞使其容易发生失火，这可能导致排放增加和性能下降。总之，奥托循环是汽车工程领域的一个重要概念。理解这一点对于设计和优化内燃机至关重要。随着我们继续创新并寻求更高效的能源来源，奥托循环的原理将保持相关性，即使行业正在转向电动和混合动力车辆。通过理解奥托循环的复杂性，工程师可以开发出更好的发动机，以满足现代交通的需求，同时最小化对环境的影响。