four-stroke internal combustion engine

简明释义

四冲程内燃机

英英释义

例句

1.Understanding the components of a four-stroke internal combustion engine 四冲程内燃机 is crucial for mechanics.

了解<四冲程内燃机> four-stroke internal combustion engine的部件对机械师来说至关重要。

2.Many motorcycles are powered by a four-stroke internal combustion engine 四冲程内燃机 for better fuel efficiency.

许多摩托车由<四冲程内燃机> four-stroke internal combustion engine提供动力，以提高燃油效率。

3.The four-stroke internal combustion engine 四冲程内燃机 is commonly found in cars and trucks.

<四冲程内燃机> four-stroke internal combustion engine通常可以在汽车和卡车中找到。

4.The lawnmower uses a four-stroke internal combustion engine 四冲程内燃机 for efficient cutting.

这台割草机使用<四冲程内燃机> four-stroke internal combustion engine来高效修剪。

5.The efficiency of a four-stroke internal combustion engine 四冲程内燃机 can significantly reduce emissions.

<四冲程内燃机> four-stroke internal combustion engine的效率可以显著减少排放。

作文

The four-stroke internal combustion engine is a fundamental technology that powers many of the vehicles we use today. Understanding how this engine works is crucial for anyone interested in automotive engineering or simply wanting to know more about their car. The four-stroke internal combustion engine operates through four distinct phases: intake, compression, power, and exhaust. Each phase plays a vital role in ensuring the engine runs efficiently and effectively.During the intake phase, the engine draws in air and fuel into the cylinder. This mixture is essential for combustion and is the first step in the engine's cycle. The design of the four-stroke internal combustion engine allows for precise control of this mixture, which can significantly affect performance and efficiency.Next comes the compression phase. The piston moves upward in the cylinder, compressing the air-fuel mixture. This compression is critical because it increases the temperature and pressure of the mixture, making it more volatile. When the piston reaches the top of its stroke, the spark plug ignites the compressed mixture, leading to the power phase.In the power phase, the explosion from the ignition forces the piston down, creating the power needed to turn the crankshaft and ultimately move the vehicle. This phase is where the four-stroke internal combustion engine generates its power, and its efficiency can be measured in terms of horsepower and torque.Finally, the exhaust phase occurs when the piston moves back up, pushing out the spent gases from the combustion process. This phase is crucial for maintaining engine performance, as any leftover gases can reduce efficiency and increase emissions. The design of the exhaust system in a four-stroke internal combustion engine is engineered to minimize back pressure and maximize the expulsion of these gases.The four-stroke internal combustion engine has become the standard in the automotive industry due to its balance of power, efficiency, and reliability. However, it is not without its challenges. Issues such as fuel efficiency, emissions, and the environmental impact of fossil fuels are significant concerns that engineers are continually addressing. Innovations in technology, such as hybrid systems and alternative fuels, are being developed to enhance the performance of the four-stroke internal combustion engine while reducing its ecological footprint.In conclusion, the four-stroke internal combustion engine is a remarkable piece of engineering that has transformed transportation. Its operation through the four phases—intake, compression, power, and exhaust—demonstrates the complexity and efficiency of modern engines. As we move towards a more sustainable future, understanding the workings of the four-stroke internal combustion engine will remain essential for both engineers and consumers alike. The continued evolution of this technology will play a pivotal role in shaping the future of mobility and energy consumption in our society.

四冲程内燃机是一项基本技术，为我们今天使用的许多车辆提供动力。了解这种发动机的工作原理对任何对汽车工程感兴趣的人或仅仅想更多了解自己汽车的人来说都是至关重要的。四冲程内燃机通过四个不同的阶段运作：进气、压缩、动力和排气。每个阶段在确保发动机高效有效运行方面都发挥着重要作用。在进气阶段，发动机将空气和燃料吸入气缸。这种混合物对于燃烧至关重要，是发动机循环的第一步。四冲程内燃机的设计允许对这种混合物进行精确控制，这可以显著影响性能和效率。接下来是压缩阶段。活塞在气缸中向上移动，压缩空气-燃料混合物。这个压缩过程至关重要，因为它提高了混合物的温度和压力，使其更加易燃。当活塞到达行程的顶部时，火花塞点燃压缩混合物，进入动力阶段。在动力阶段，点燃引起的爆炸迫使活塞向下移动，产生转动曲轴并最终推动车辆所需的动力。这个阶段是四冲程内燃机产生动力的地方，其效率可以通过马力和扭矩来衡量。最后，排气阶段发生在活塞向上移动时，将燃烧过程中的废气推出。这个阶段对于保持发动机性能至关重要，因为任何残留的废气都可能降低效率并增加排放。四冲程内燃机的排气系统设计旨在最小化背压并最大化这些气体的排出。由于其动力、效率和可靠性的平衡，四冲程内燃机已成为汽车工业的标准。然而，它并非没有挑战。燃油效率、排放和化石燃料对环境的影响是工程师们持续关注的重要问题。技术创新，如混合动力系统和替代燃料，正在开发中，以增强四冲程内燃机的性能，同时减少其生态足迹。总之，四冲程内燃机是一项卓越的工程作品，改变了交通运输。它通过四个阶段——进气、压缩、动力和排气——的运作展示了现代发动机的复杂性和效率。随着我们朝着更可持续的未来迈进，理解四冲程内燃机的工作原理仍然对工程师和消费者至关重要。这项技术的持续演变将在塑造我们社会的移动性和能源消费的未来中发挥关键作用。