power stroke

简明释义

动力冲程

英英释义

A power stroke refers to the phase in an engine cycle during which the combustion of fuel occurs, resulting in the expansion of gases that push a piston down, generating mechanical work.

动力冲程是指发动机循环中的一个阶段，在此阶段燃料燃烧，气体膨胀推动活塞向下移动，从而产生机械功。

例句

1.In a four-stroke engine, the power stroke is the third phase of operation.

在四冲程发动机中，动力冲程是操作的第三个阶段。

2.The timing of the power stroke is crucial for optimal performance.

对于最佳性能来说，动力冲程的时机至关重要。

3.During the power stroke, the piston moves down the cylinder, generating energy.

在动力冲程期间，活塞向下移动气缸，产生能量。

4.The engine's efficiency greatly improves with each power stroke.

发动机的效率随着每次动力冲程的增加而大幅提高。

5.Adjusting the fuel mixture can enhance the power stroke output.

调整燃料混合物可以增强动力冲程的输出。

作文

The term power stroke refers to a crucial phase in the operation of an engine, particularly in internal combustion engines. During this phase, the energy generated from the combustion of fuel is converted into mechanical work. This process is fundamental to the overall efficiency and performance of the engine. Understanding the mechanics behind the power stroke can provide insights into how engines operate and how they can be optimized for better performance.In a typical four-stroke engine, the cycle consists of four distinct stages: intake, compression, power, and exhaust. The power stroke occurs after the compression stage and is where the magic happens. Once the air-fuel mixture is compressed, a spark plug ignites it, resulting in a rapid expansion of gases. This expansion pushes the piston down, which is what generates the power needed to turn the crankshaft and ultimately drive the vehicle forward.The efficiency of the power stroke is influenced by several factors, including the quality of the fuel, the design of the engine, and the tuning of the ignition system. For instance, using high-octane fuel can improve the combustion process, leading to a more powerful power stroke. Additionally, advancements in technology, such as turbocharging and fuel injection systems, have significantly enhanced the performance of the power stroke by ensuring that the air-fuel mixture is optimal for combustion.Moreover, the power stroke is not only vital in automotive applications but also plays a significant role in various types of machinery and equipment. For example, in lawnmowers, chainsaws, and other small engines, the power stroke is responsible for providing the necessary force to perform tasks efficiently. Understanding how to maintain and optimize the power stroke in these machines can lead to better performance and longevity.From an engineering perspective, analyzing the power stroke involves studying pressure, temperature, and volume changes within the cylinder. Engineers utilize various tools and simulations to refine the power stroke for maximum efficiency. This analysis is crucial in developing new engine designs that meet environmental regulations while still delivering high performance.In conclusion, the power stroke is a fundamental concept in understanding how engines work. It represents the moment when potential energy from fuel is transformed into kinetic energy, driving the engine's performance. Whether in automobiles, small machinery, or industrial applications, the power stroke is essential for effective operation. By grasping the intricacies of this phase, one can appreciate the complexities of engine design and the importance of continuous innovation in this field. As technology progresses, the optimization of the power stroke will undoubtedly remain a key focus for engineers and manufacturers alike.

短语power stroke指的是发动机运作中的一个关键阶段，特别是在内燃机中。在这个阶段，燃料燃烧产生的能量被转化为机械功。这一过程对发动机的整体效率和性能至关重要。理解power stroke背后的机制可以提供关于发动机如何运作以及如何优化其性能的见解。在典型的四冲程发动机中，循环包括四个不同的阶段：进气、压缩、动力和排气。power stroke发生在压缩阶段之后，是魔法发生的地方。一旦空气-燃料混合物被压缩，火花塞点燃它，导致气体迅速膨胀。这种膨胀将活塞向下推，这就是产生驱动曲轴并最终推动车辆前进所需的动力。power stroke的效率受到多种因素的影响，包括燃料的质量、发动机的设计以及点火系统的调校。例如，使用高辛烷值的燃料可以改善燃烧过程，从而提高power stroke的功率。此外，涡轮增压和燃油喷射系统等技术的进步显著增强了power stroke的性能，确保空气-燃料混合物在燃烧时达到最佳状态。此外，power stroke不仅在汽车应用中至关重要，在各种类型的机械和设备中也发挥着重要作用。例如，在割草机、链锯和其他小型发动机中，power stroke负责提供执行任务所需的力量。了解如何维护和优化这些机器中的power stroke可以提高性能和延长使用寿命。从工程的角度来看，分析power stroke涉及研究气缸内的压力、温度和体积变化。工程师利用各种工具和模拟来精炼power stroke以实现最大效率。这种分析对于开发满足环境法规的新发动机设计至关重要，同时仍能提供高性能。总之，power stroke是理解发动机工作原理的基本概念。它代表了潜在能量从燃料转化为动能的时刻，驱动着发动机的性能。无论是在汽车、小型机械还是工业应用中，power stroke对于有效运作都是必不可少的。通过掌握这一阶段的复杂性，人们可以欣赏到发动机设计的复杂性以及该领域持续创新的重要性。随着技术的进步，power stroke的优化无疑将继续成为工程师和制造商关注的重点。