four stroke diesel cycle

简明释义

四冲程狄赛尔循环

英英释义

例句

1.The four stroke diesel cycle involves intake, compression, power, and exhaust strokes.

四冲程柴油循环包括进气、压缩、做功和排气冲程。

2.In marine applications, the four stroke diesel cycle is preferred for its reliability.

在海洋应用中，四冲程柴油循环因其可靠性而受到青睐。

3.Many modern trucks utilize the four stroke diesel cycle for better fuel efficiency.

许多现代卡车利用四冲程柴油循环来提高燃油效率。

4.The engine operates on a four stroke diesel cycle, which is efficient for heavy-duty vehicles.

该发动机采用四冲程柴油循环，对重型车辆来说效率很高。

5.Understanding the four stroke diesel cycle can help mechanics diagnose engine problems.

理解四冲程柴油循环可以帮助机械师诊断发动机问题。

作文

The internal combustion engine is a crucial component in modern vehicles, and understanding its operation is essential for anyone interested in automotive engineering. One of the most common types of internal combustion engines is the diesel engine, which operates on the principles of the four stroke diesel cycle. This cycle consists of four distinct strokes: intake, compression, power, and exhaust. Each stroke plays a vital role in the engine's overall efficiency and performance.During the intake stroke, the engine draws in air through the intake valve as the piston moves down the cylinder. Unlike gasoline engines that mix fuel with air before entering the cylinder, diesel engines only draw in air during this phase. This is crucial because it allows for a higher compression ratio, which is one of the defining characteristics of diesel engines.The next phase is the compression stroke, where the piston moves back up the cylinder, compressing the air to a very high pressure and temperature. At the end of this stroke, fuel is injected directly into the highly compressed air, causing it to ignite spontaneously due to the elevated temperature. This process is known as auto-ignition, and it is what differentiates the four stroke diesel cycle from the gasoline engine cycle, where spark plugs are used to ignite the fuel-air mixture.Following the compression stroke is the power stroke. As the fuel ignites, it creates a rapid expansion of gases, pushing the piston down the cylinder. This downward movement generates the power needed to turn the crankshaft, ultimately propelling the vehicle forward. The efficiency of this power stroke is a significant reason why diesel engines are often more fuel-efficient than their gasoline counterparts.Finally, the exhaust stroke occurs when the piston moves back up the cylinder again, pushing the spent gases out through the exhaust valve. This stroke clears the cylinder of exhaust gases, making way for fresh air to be drawn in during the next intake stroke. The entire four stroke diesel cycle then repeats itself, allowing the engine to produce continuous power.Understanding the four stroke diesel cycle is essential not just for engineers but also for anyone who wishes to comprehend how their vehicles operate. Diesel engines are widely used in various applications, from trucks and buses to ships and industrial machinery, due to their durability and efficiency. Moreover, advancements in technology have led to the development of cleaner and more efficient diesel engines, making them a viable option in the push for sustainable transportation solutions.In conclusion, the four stroke diesel cycle is a fundamental concept in the field of internal combustion engines. By breaking down the process into its four strokes—intake, compression, power, and exhaust—we can appreciate the complexity and efficiency of diesel engines. This understanding not only enhances our knowledge of automotive engineering but also informs our choices as consumers in an increasingly environmentally-conscious world.

内燃机是现代车辆的重要组成部分，理解其工作原理对任何对汽车工程感兴趣的人来说都是必不可少的。最常见的内燃机类型之一是柴油机，它基于四冲程柴油循环的原理工作。这个循环由四个不同的冲程组成：进气、压缩、动力和排气。每个冲程在发动机的整体效率和性能中都起着至关重要的作用。在进气冲程中，发动机通过进气阀吸入空气，活塞向下移动气缸。与汽油发动机在进入气缸之前混合燃料和空气不同，柴油发动机在此阶段只吸入空气。这一点至关重要，因为它允许更高的压缩比，这也是柴油发动机的一个定义特征。接下来的阶段是压缩冲程，此时活塞再次向上移动气缸，压缩空气至非常高的压力和温度。在这一冲程结束时，燃料被直接喷入高度压缩的空气中，由于温度升高而自发点燃。这一过程被称为自燃，它是将四冲程柴油循环与汽油发动机循环区分开的原因，因为后者使用火花塞点燃燃料-空气混合物。压缩冲程之后是动力冲程。当燃料点燃时，会产生快速膨胀的气体，推动活塞向下移动气缸。这一向下运动产生了转动曲轴所需的动力，最终推动车辆前进。这个动力冲程的效率是柴油发动机通常比汽油发动机更省油的一个重要原因。最后，排气冲程发生，当活塞再次向上移动气缸时，将废气通过排气阀推出。这个冲程清除了气缸中的废气，为下一个进气冲程吸入新鲜空气腾出了空间。整个四冲程柴油循环然后重复，使发动机能够持续产生动力。理解四冲程柴油循环不仅对工程师至关重要，而且对任何希望理解他们的车辆如何运作的人也是如此。由于其耐用性和效率，柴油发动机广泛应用于各种领域，从卡车和公共汽车到船舶和工业机械。此外，技术的进步导致了更清洁、更高效的柴油发动机的发展，使其成为推动可持续交通解决方案的有效选择。总之，四冲程柴油循环是内燃机领域的基本概念。通过将这一过程分解为四个冲程——进气、压缩、动力和排气，我们可以欣赏柴油发动机的复杂性和效率。这种理解不仅增强了我们对汽车工程的知识，也在日益关注环境的世界中影响了我们作为消费者的选择。