piston displacement

简明释义

汽缸有效容积

英英释义

例句

1.The engine's performance can be significantly affected by its piston displacement.

发动机的性能可能会受到其活塞排量的显著影响。

2.A larger piston displacement usually means more power and torque.

更大的活塞排量通常意味着更多的动力和扭矩。

3.When tuning a car, understanding the piston displacement is essential.

在调校汽车时，了解活塞排量是必不可少的。

4.The manufacturer specifies the piston displacement for each engine model.

制造商为每个发动机型号指定了活塞排量。

5.In racing, teams often optimize piston displacement to gain an edge.

在赛车中，车队经常优化活塞排量以获得优势。

作文

Understanding the concept of piston displacement is crucial for anyone interested in automotive engineering or mechanics. Piston displacement refers to the volume of space that a piston sweeps through in a cylinder during its movement. This measurement is essential because it directly influences the engine's performance, efficiency, and power output. The larger the piston displacement, the more air and fuel can be drawn into the cylinder, which typically results in increased power. In internal combustion engines, the piston displacement is calculated using the formula: \[ V = \frac{\pi}{4} d^2 h \] Where \( V \) is the volume, \( d \) is the diameter of the piston, and \( h \) is the stroke length. This formula highlights the importance of both the diameter and the stroke of the piston in determining the overall displacement. For example, consider a car engine with a piston diameter of 10 cm and a stroke length of 8 cm. Plugging these values into the formula gives us: \[ V = \frac{\pi}{4} (10)^2 (8) \approx 628.32 \text{ cm}^3 \] This means that each piston in this engine displaces approximately 628.32 cubic centimeters of volume during each cycle. When multiple cylinders are involved, the total piston displacement can be calculated by summing the displacements of all the pistons. The significance of piston displacement extends beyond mere calculations; it affects various aspects of engine design and functionality. For instance, manufacturers often balance piston displacement with other features such as turbocharging and supercharging to achieve optimal performance. A larger piston displacement can lead to higher torque and horsepower, but it may also result in decreased fuel efficiency. Thus, engineers must find a suitable compromise that meets the desired performance metrics while considering environmental regulations and consumer expectations. Moreover, piston displacement plays a vital role in categorizing engines. For example, engines are often classified as small displacement or large displacement based on their piston displacement. Smaller engines are typically more fuel-efficient and are preferred for compact cars, while larger engines are favored in performance vehicles for their power and speed. In conclusion, understanding piston displacement is essential for grasping how engines work and how they can be optimized for various applications. Whether you are an aspiring engineer, a car enthusiast, or simply someone curious about how vehicles operate, knowledge of piston displacement will enhance your understanding of automotive technology. By exploring the relationship between piston displacement and engine performance, one can appreciate the intricate balance that engineers must achieve in creating efficient and powerful engines.

理解活塞位移的概念对于任何对汽车工程或机械感兴趣的人来说都是至关重要的。活塞位移指的是活塞在气缸内运动时所扫过的空间体积。这个测量值至关重要，因为它直接影响发动机的性能、效率和功率输出。活塞位移越大，气缸内可以吸入的空气和燃料就越多，这通常会导致功率增加。在内燃机中，活塞位移的计算公式为：\[ V = \frac{\pi}{4} d^2 h \]其中\( V \)是体积，\( d \)是活塞的直径，\( h \)是行程长度。这个公式突显了活塞的直径和行程在确定总体位移中的重要性。例如，考虑一个活塞直径为10厘米、行程长度为8厘米的汽车发动机。将这些值代入公式，我们得到：\[ V = \frac{\pi}{4} (10)^2 (8) \approx 628.32 \text{ cm}^3 \]这意味着该发动机中的每个活塞在每个循环中大约排出628.32立方厘米的体积。当涉及多个气缸时，总的活塞位移可以通过将所有活塞的位移相加来计算。活塞位移的重要性超越了简单的计算；它影响着发动机设计和功能的各个方面。例如，制造商通常在涡轮增压和机械增压等其他特性之间平衡活塞位移以实现最佳性能。更大的活塞位移可能导致更高的扭矩和马力，但也可能导致燃油效率下降。因此，工程师必须找到合适的妥协，以满足所需的性能指标，同时考虑环境法规和消费者期望。此外，活塞位移在对发动机进行分类时也起着至关重要的作用。例如，发动机通常根据其活塞位移被分类为小位移或大位移。较小的发动机通常更省油，适合紧凑型汽车，而较大的发动机则因其动力和速度而受到性能车的青睐。总之，理解活塞位移对于掌握发动机如何工作以及如何优化发动机以适应各种应用至关重要。无论您是有志的工程师、汽车爱好者，还是仅仅对车辆操作感到好奇的人，了解活塞位移都将增强您对汽车技术的理解。通过探索活塞位移与发动机性能之间的关系，人们可以欣赏到工程师在创造高效且强大的发动机时必须达到的微妙平衡。