antiknock agent

简明释义

抗爆剂

英英释义

例句

1.Many gasoline blends contain an antiknock agent to enhance combustion efficiency.

许多汽油混合物中含有抗爆剂以提高燃烧效率。

2.Using a high-quality antiknock agent can prevent engine knocking.

使用高质量的抗爆剂可以防止发动机敲击。

3.Older cars may require a specific antiknock agent to function properly.

老旧汽车可能需要特定的抗爆剂才能正常运行。

4.The effectiveness of an antiknock agent is often measured by its octane rating.

一个抗爆剂的有效性通常通过其辛烷值来衡量。

5.The addition of an antiknock agent to fuel improves engine performance.

向燃料中添加抗爆剂可以提高发动机性能。

作文

The internal combustion engine has been a cornerstone of modern transportation, powering everything from cars to airplanes. However, one of the challenges faced by engineers and manufacturers has been the issue of engine knocking, which can severely impact performance and longevity. To combat this problem, the use of an antiknock agent (抗爆剂) has become essential in the formulation of fuels. An antiknock agent is a substance added to fuel to reduce engine knocking, thereby improving the efficiency and reliability of the engine. Engine knocking occurs when the fuel-air mixture in the cylinder ignites prematurely, leading to a sharp knocking sound and potential damage to the engine. This phenomenon is particularly problematic in high-compression engines, where the pressure and temperature of the fuel-air mixture are significantly elevated. The presence of an antiknock agent helps to increase the octane rating of the fuel, making it more resistant to premature ignition. Historically, tetraethyl lead was the most widely used antiknock agent, providing excellent anti-knock properties. However, due to environmental concerns and health risks associated with lead exposure, many countries have phased out its use. This has led to the development of alternative antiknock agents, such as ethanol, methanol, and various oxygenates like MTBE (methyl tert-butyl ether). These alternatives not only help to prevent knocking but also contribute to cleaner emissions, aligning with global efforts to reduce pollution. The importance of antiknock agents extends beyond just performance; they play a critical role in the economic viability of fuels. Higher octane fuels, enhanced with effective antiknock agents, allow for more aggressive tuning of engines, which can lead to increased horsepower and torque without compromising engine durability. This is particularly appealing in the automotive industry, where performance and efficiency are paramount. Moreover, the development of advanced engine technologies, such as turbocharging and direct fuel injection, has further underscored the need for reliable antiknock agents. These technologies can significantly increase the power output of an engine while maintaining fuel efficiency, but they also raise the risk of knocking. Therefore, the right choice of antiknock agent becomes critical in optimizing the performance of these modern engines. In conclusion, the role of antiknock agents in the automotive and aviation industries cannot be overstated. They are essential for preventing engine knocking, enhancing performance, and ensuring compliance with environmental regulations. As technology continues to evolve, so too will the formulations of fuels and the antiknock agents used within them, paving the way for even more efficient and sustainable transportation solutions. Understanding the significance of antiknock agents is crucial for anyone involved in the fields of engineering, manufacturing, or environmental science, as they represent a key aspect of modern fuel technology and its implications for our world.

内燃机是现代交通的基石，驱动着从汽车到飞机的一切。然而，工程师和制造商面临的一个挑战是发动机敲击的问题，这会严重影响性能和使用寿命。为了解决这个问题，使用抗爆剂（antiknock agent）在燃料配方中变得至关重要。抗爆剂是一种添加到燃料中的物质，用于减少发动机敲击，从而提高发动机的效率和可靠性。发动机敲击发生在气缸中的燃油空气混合物提前点燃时，导致尖锐的敲击声和对发动机的潜在损害。这种现象在高压缩发动机中特别成问题，因为燃油空气混合物的压力和温度显著升高。抗爆剂的存在有助于提高燃料的辛烷值，使其更能抵抗提前点燃。历史上，四乙基铅是最广泛使用的抗爆剂，提供了出色的抗敲击性能。然而，由于环境问题和与铅接触相关的健康风险，许多国家已逐步淘汰其使用。这导致了替代抗爆剂的发展，例如乙醇、甲醇和各种氧化物，如MTBE（甲基叔丁基醚）。这些替代品不仅有助于防止敲击，还能减少排放，符合全球减少污染的努力。抗爆剂的重要性不仅体现在性能上；它们在燃料的经济可行性中也发挥着关键作用。通过有效的抗爆剂增强的高辛烷值燃料，可以对发动机进行更激进的调校，从而在不妨害发动机耐久性的情况下增加马力和扭矩。这在汽车工业中尤其具有吸引力，因为性能和效率至关重要。此外，先进发动机技术的发展，如涡轮增压和直接燃油喷射，更加突显了对可靠抗爆剂的需求。这些技术可以显著提高发动机的功率输出，同时保持燃油效率，但也增加了敲击的风险。因此，选择合适的抗爆剂在优化这些现代发动机的性能中变得至关重要。总之，抗爆剂在汽车和航空工业中的作用不可低估。它们对于防止发动机敲击、增强性能以及确保符合环境法规至关重要。随着技术的不断发展，燃料的配方和其中使用的抗爆剂也将不断演变，为更高效、更可持续的交通解决方案铺平道路。理解抗爆剂的重要性对于任何涉及工程、制造或环境科学领域的人来说都是至关重要的，因为它们代表了现代燃料技术及其对我们世界的影响的关键方面。