piston stroke

简明释义

活塞冲程

英英释义

例句

1.In a two-stroke engine, the piston stroke is completed in one revolution.

在二冲程发动机中，活塞行程在一次旋转中完成。

2.The piston stroke affects both torque and horsepower in an engine.

活塞行程影响发动机的扭矩和马力。

3.A longer piston stroke usually results in more power output.

更长的活塞行程通常会导致更大的功率输出。

4.Adjusting the piston stroke can help optimize fuel efficiency.

调整活塞行程可以帮助优化燃油效率。

5.The engine's performance depends significantly on the length of the piston stroke.

发动机的性能在很大程度上取决于活塞行程的长度。

作文

The concept of piston stroke is fundamental in the understanding of internal combustion engines and various mechanical systems. A piston stroke refers to the distance that a piston travels within a cylinder during one complete cycle of operation. This movement is crucial as it directly impacts the engine's efficiency, power output, and overall performance. In essence, the piston stroke determines how much air and fuel mixture can enter the combustion chamber, which in turn affects the energy produced during combustion.To illustrate the importance of piston stroke, let’s consider a typical four-stroke engine. Each cycle consists of four distinct phases: intake, compression, power, and exhaust. During the intake phase, the piston moves downwards, creating a vacuum that draws in the air-fuel mixture. The length of this downward movement, or the piston stroke, is critical because it influences how much mixture enters the cylinder. If the piston stroke is too short, insufficient air and fuel may enter, leading to a weaker combustion process.Moreover, the piston stroke also affects the engine’s displacement, which is the total volume of all the cylinders in the engine. Displacement is a key factor in determining an engine’s power and efficiency. A larger piston stroke generally means that more air and fuel can be combusted, resulting in greater power output. However, it is essential to balance the piston stroke with the engine's bore size (the diameter of the cylinder) to optimize performance without sacrificing efficiency.In high-performance engines, engineers often manipulate the piston stroke to achieve desired characteristics. For instance, a longer piston stroke can enhance torque at lower RPMs, making the vehicle feel more responsive in everyday driving conditions. Conversely, a shorter piston stroke can help an engine rev higher, which is beneficial for racing applications where peak horsepower is paramount.Additionally, the piston stroke interacts with other components of the engine, such as the crankshaft and connecting rods. These parts must be designed to accommodate the specific piston stroke to ensure smooth operation and prevent mechanical failures. Engineers must consider factors like material strength and weight distribution when designing these components to withstand the forces generated during the piston stroke.In conclusion, understanding the piston stroke is vital for anyone interested in automotive engineering or mechanics. It plays a significant role in determining an engine's efficiency, power output, and overall performance. As technology advances, the optimization of the piston stroke will continue to evolve, leading to more efficient and powerful engines. Whether you are a car enthusiast or a professional engineer, grasping the nuances of the piston stroke can greatly enhance your understanding of how engines work and how they can be improved for better performance.

“活塞行程”这个概念在理解内燃机和各种机械系统中是至关重要的。“活塞行程”指的是活塞在气缸内一次完整工作循环中移动的距离。这一运动至关重要，因为它直接影响发动机的效率、功率输出和整体性能。从本质上讲，“活塞行程”决定了有多少空气和燃料混合物能够进入燃烧室，而这又会影响燃烧过程中产生的能量。为了说明“活塞行程”的重要性，让我们考虑一个典型的四冲程发动机。每个循环由四个不同的阶段组成：进气、压缩、动力和排气。在进气阶段，活塞向下移动，产生一个真空，吸入空气-燃料混合物。这一向下运动的长度，或称为“活塞行程”，至关重要，因为它影响着进入气缸的混合物量。如果“活塞行程”过短，可能会导致进入的空气和燃料不足，从而导致燃烧过程较弱。此外，“活塞行程”还会影响发动机的排量，即发动机所有气缸的总容积。排量是决定发动机功率和效率的关键因素。一般来说，较大的“活塞行程”意味着可以燃烧更多的空气和燃料，从而产生更大的功率输出。然而，必须平衡“活塞行程”与发动机的缸径（气缸的直径），以优化性能而不牺牲效率。在高性能发动机中，工程师通常会操控“活塞行程”以实现所需的特性。例如，较长的“活塞行程”可以增强低转速下的扭矩，使车辆在日常驾驶条件下感觉更加灵敏。相反，较短的“活塞行程”可以帮助发动机转速更高，这对于赛车应用来说，峰值马力至关重要。此外，“活塞行程”与发动机的其他组件，如曲轴和连杆相互作用。这些部件必须设计成能够适应特定的“活塞行程”，以确保平稳运行并防止机械故障。工程师在设计这些部件时，必须考虑材料强度和重量分布等因素，以承受在“活塞行程”期间产生的力量。总之，理解“活塞行程”对任何对汽车工程或机械感兴趣的人来说都是至关重要的。它在决定发动机的效率、功率输出和整体性能方面发挥着重要作用。随着技术的进步，“活塞行程”的优化将继续发展，从而导致更高效、更强大的发动机。无论你是汽车爱好者还是专业工程师，掌握“活塞行程”的细微差别都可以大大增强你对发动机工作原理及其改进以提升性能的理解。