compression ratio

简明释义

压缩比

英英释义

例句

1.A higher compression ratio typically means more power output in an engine.

更高的压缩比通常意味着引擎输出更多的功率。

2.The compression ratio can significantly affect the thermal efficiency of an engine.

对引擎来说，压缩比可以显著影响热效率。

3.When tuning the car, we need to consider the compression ratio for optimal performance.

在调校汽车时，我们需要考虑压缩比以获得最佳性能。

4.The compression ratio of this engine is designed to improve fuel efficiency.

这个引擎的压缩比旨在提高燃油效率。

5.To achieve better mileage, manufacturers often increase the compression ratio in new models.

为了获得更好的油耗，制造商通常会在新车型中提高压缩比。

作文

In the world of engineering and mechanics, the term compression ratio refers to a crucial parameter that defines the efficiency and performance of an engine. Specifically, it is the ratio of the volume of the combustion chamber when the piston is at the bottom of its stroke (BDC) to the volume when the piston is at the top of its stroke (TDC). This concept is vital for understanding how internal combustion engines operate and how they can be optimized for better fuel efficiency and power output. When we talk about compression ratio (压缩比), we are essentially discussing how much the air-fuel mixture is compressed before ignition occurs. A higher compression ratio typically indicates that the engine can extract more energy from the fuel, leading to improved performance and efficiency.The compression ratio also plays a significant role in determining the type of fuel that can be used in an engine. For instance, high-performance engines often have a higher compression ratio and may require higher octane fuels to prevent knocking or pre-ignition. Knocking occurs when the air-fuel mixture ignites prematurely due to high pressure and temperature, which can cause severe damage to the engine over time. Thus, understanding the implications of compression ratio is essential for both engineers designing engines and consumers choosing the right vehicle for their needs.Moreover, the compression ratio affects emissions as well. Engines with a higher compression ratio generally produce fewer emissions because they burn fuel more completely. This is particularly important in today’s automotive industry, where environmental regulations are becoming increasingly stringent. Manufacturers are constantly striving to develop engines that not only perform well but also meet these regulatory standards. By optimizing the compression ratio, manufacturers can create engines that are both powerful and environmentally friendly.In addition to traditional internal combustion engines, the concept of compression ratio is also applicable in other fields, such as data compression and audio/video encoding. In these contexts, compression ratio refers to the ratio of the original size of data to the size of the compressed data. A higher compression ratio indicates that more data has been compressed into a smaller space, which is desirable for efficient storage and transmission. Understanding this aspect of compression ratio can help individuals and businesses make informed decisions about data management and technology use.In conclusion, the compression ratio is a multifaceted concept that permeates various domains, from automotive engineering to data management. Its significance cannot be overstated, as it directly influences engine performance, fuel efficiency, emissions, and even data handling capabilities. As technology continues to evolve, a deeper understanding of compression ratio will be essential for innovation and improvement in many fields. Whether one is an engineer, a consumer, or a tech enthusiast, grasping the intricacies of compression ratio will undoubtedly enhance one's knowledge and appreciation of the complexities involved in modern technology.

在工程和机械的世界中，术语compression ratio（压缩比）是一个关键参数，定义了发动机的效率和性能。具体来说，它是指活塞在下止点（BDC）时燃烧室的体积与活塞在上止点（TDC）时的体积的比率。这个概念对于理解内燃机的工作原理以及如何优化以提高燃油效率和动力输出至关重要。当我们谈论compression ratio时，我们实际上是在讨论空气-燃料混合物在点火发生之前被压缩的程度。较高的compression ratio通常表明发动机能够从燃料中提取更多的能量，从而提高性能和效率。compression ratio还在决定发动机可以使用的燃料类型方面发挥着重要作用。例如，高性能发动机通常具有更高的compression ratio，可能需要更高辛烷值的燃料，以防止敲缸或提前点火。敲缸发生在空气-燃料混合物因高压和高温而过早点燃时，这可能会导致发动机随时间的推移严重损坏。因此，理解compression ratio的影响对于设计发动机的工程师和选择适合自己需求的车辆的消费者来说都是至关重要的。此外，compression ratio还影响排放。通常情况下，具有更高compression ratio的发动机会产生更少的排放，因为它们更完全地燃烧燃料。这在当今汽车工业中尤为重要，因为环境法规变得越来越严格。制造商们不断努力开发不仅性能优越而且符合这些法规标准的发动机。通过优化compression ratio，制造商可以创造出既强大又环保的发动机。除了传统的内燃机，compression ratio的概念在其他领域也适用，例如数据压缩和音频/视频编码。在这些背景下，compression ratio指的是原始数据大小与压缩数据大小的比率。较高的compression ratio意味着更多的数据被压缩到更小的空间中，这对于高效存储和传输是可取的。理解compression ratio的这一方面可以帮助个人和企业在数据管理和技术使用方面做出明智的决策。总之，compression ratio是一个多方面的概念，渗透到多个领域，从汽车工程到数据管理。其重要性不容低估，因为它直接影响发动机性能、燃油效率、排放，甚至数据处理能力。随着技术的不断发展，更深入地理解compression ratio将对许多领域的创新和改进至关重要。无论是工程师、消费者还是技术爱好者，掌握compression ratio的复杂性无疑会增强人们对现代技术所涉及复杂性的知识和欣赏。