volumetric efficiency

简明释义

容积效率

英英释义

例句

1.The volumetric efficiency 容积效率 of a reciprocating pump is crucial for its performance.

往复泵的容积效率 volumetric efficiency 对其性能至关重要。

2.Improving the volumetric efficiency 容积效率 of a turbocharged engine can lead to significant performance gains.

提升涡轮增压发动机的容积效率 volumetric efficiency 可以带来显著的性能提升。

3.The engine's volumetric efficiency 容积效率 directly impacts its power output.

发动机的容积效率 volumetric efficiency 直接影响其功率输出。

4.A well-tuned intake system can improve the volumetric efficiency 容积效率 of an internal combustion engine.

调校良好的进气系统可以改善内燃机的容积效率 volumetric efficiency。

5.Engine designers often strive for higher volumetric efficiency 容积效率 to enhance fuel economy.

发动机设计师通常努力提高容积效率 volumetric efficiency 以增强燃油经济性。

作文

Volumetric efficiency is a critical concept in the field of engineering, particularly in the design and analysis of internal combustion engines. It refers to the effectiveness with which an engine draws in air or air-fuel mixture during the intake stroke relative to its total displacement volume. In simpler terms, it measures how much of the available space in the engine's cylinders is filled with air or fuel when the piston moves down during the intake phase. A high volumetric efficiency indicates that the engine can fill its cylinders more completely, leading to better performance and power output.To understand volumetric efficiency, it is essential to consider several factors that influence this parameter. The design of the intake system plays a significant role; for instance, the shape and length of the intake manifold can affect the airflow into the engine. Additionally, the timing of the intake valves is crucial. If the valves open and close at optimal moments, the engine will be able to draw in more air, thus improving volumetric efficiency.Another important aspect is the engine speed. At lower RPMs, engines may struggle to achieve high volumetric efficiency due to insufficient airflow. However, as engine speed increases, the inertia of the air helps fill the cylinders more effectively. This relationship highlights the importance of tuning the engine for specific operational ranges to maximize volumetric efficiency.Moreover, environmental conditions such as temperature and atmospheric pressure also impact volumetric efficiency. For example, colder air is denser than warmer air, allowing for a greater mass of air to enter the cylinders. Therefore, an engine operating in cooler conditions may exhibit higher volumetric efficiency compared to one running in hotter environments.In practical applications, engineers often strive to enhance volumetric efficiency through various modifications. Performance upgrades such as installing aftermarket intake systems, optimizing valve timing, or utilizing forced induction systems like turbochargers can significantly improve an engine's ability to breathe. These enhancements not only boost power output but also contribute to better fuel efficiency, making them attractive options for both enthusiasts and everyday drivers.In conclusion, volumetric efficiency is a vital measure of an engine's performance capabilities. By understanding the factors that influence this parameter, engineers can design more efficient and powerful engines. As technology advances, the quest for improved volumetric efficiency continues, pushing the boundaries of what is possible in automotive engineering. Whether it’s for racing applications or everyday vehicles, maximizing volumetric efficiency remains a key goal in the pursuit of high-performance engines.

容积效率是工程领域中的一个关键概念，特别是在内燃机的设计和分析中。它指的是发动机在进气行程中相对于其总排量的有效吸入空气或空气-燃料混合物的能力。简单来说，它衡量了当活塞在进气阶段向下移动时，发动机气缸中可用空间的多少被空气或燃料填充。高容积效率表明发动机能够更完全地填充气缸，从而提高性能和功率输出。要理解容积效率，必须考虑几个影响该参数的因素。进气系统的设计起着重要作用；例如，进气歧管的形状和长度会影响空气流入发动机的方式。此外，进气阀的时机至关重要。如果阀门在最佳时刻打开和关闭，发动机将能够吸入更多的空气，从而改善容积效率。另一个重要方面是发动机转速。在较低的转速下，发动机可能难以实现高容积效率，因为空气流动不足。然而，随着发动机转速的提高，空气的惯性有助于更有效地填充气缸。这种关系突显了为特定操作范围调校发动机以最大化容积效率的重要性。此外，温度和大气压力等环境条件也会影响容积效率。例如，冷空气比热空气更密集，从而允许更多的空气进入气缸。因此，在较凉爽的条件下运行的发动机可能表现出比在较热环境中运行的发动机更高的容积效率。在实际应用中，工程师们常常通过各种改装来提升容积效率。性能升级，例如安装售后市场进气系统、优化阀门时机或利用涡轮增压等强制进气系统，可以显著提高发动机的呼吸能力。这些增强不仅提升了功率输出，还促进了更好的燃油效率，使其成为爱好者和日常驾驶者的吸引选项。总之，容积效率是衡量发动机性能能力的重要指标。通过了解影响该参数的因素，工程师可以设计出更高效、更强大的发动机。随着技术的进步，改善容积效率的追求仍在继续，推动着汽车工程的可能性界限。无论是用于赛车应用还是日常车辆，最大化容积效率始终是追求高性能发动机的关键目标。