octane number

简明释义

辛烷值

英英释义

例句

1.Regular unleaded gasoline typically has an octane number of around 87.

常规无铅汽油的辛烷值通常在87左右。

2.Many sports cars require fuel with a minimum octane number of 91.

许多跑车需要最低辛烷值为91的燃料。

3.The higher the octane number, the better the fuel can resist knocking.

更高的辛烷值意味着燃料抵抗爆震的能力更好。

4.Using fuel with a lower octane number than recommended can damage your engine.

使用低于推荐值的辛烷值燃料可能会损坏你的发动机。

5.The octane number of gasoline affects its performance in high-compression engines.

汽油的辛烷值影响其在高压缩比发动机中的表现。

作文

The performance of an engine is often measured by its efficiency and power output. One of the key factors that influence these parameters is the fuel used in the engine. Among various fuels, gasoline is the most common, and its quality can significantly impact engine performance. A crucial aspect of gasoline quality is its octane number, which is a measure of the fuel's ability to resist knocking or pinging during combustion. Knocking occurs when fuel ignites prematurely in the engine's cylinder, leading to a decrease in performance and potential engine damage. Therefore, understanding the concept of octane number is essential for both car owners and manufacturers.The octane number indicates how much compression the fuel can withstand before igniting. Higher octane numbers signify that the fuel can handle greater compression without knocking, making it suitable for high-performance engines that operate at higher compression ratios. For instance, premium gasoline typically has an octane number of 91 or higher, while regular gasoline usually has an octane number around 87. Using fuel with a lower octane number than recommended can lead to engine knocking, which not only affects performance but can also cause long-term damage to the engine components.In recent years, the automotive industry has made significant advancements in engine technology, leading to the development of engines that require higher octane numbers for optimal performance. These engines are designed to extract maximum power from the fuel, which is particularly important in sports cars and luxury vehicles. As a result, the demand for high-octane fuels has increased, prompting fuel manufacturers to produce more options for consumers.However, the relationship between octane number and fuel economy is often misunderstood. Many drivers assume that using a fuel with a higher octane number will automatically result in better fuel efficiency. While it is true that high-performance engines benefit from higher octane numbers, standard engines designed for regular gasoline do not see any improvements in fuel economy when using premium fuel. In fact, using a higher octane number fuel in a standard engine may simply be a waste of money, as the engine is not designed to take advantage of the additional resistance to knocking.Moreover, environmental considerations are also becoming increasingly important in discussions about fuel quality. Fuels with higher octane numbers tend to produce fewer emissions, which is beneficial for air quality and overall environmental health. As governments implement stricter regulations on vehicle emissions, the role of octane number in reducing pollutants becomes more critical. Therefore, consumers should consider not only the performance aspects of octane number but also its environmental impact when choosing fuel for their vehicles.In conclusion, the octane number is a vital factor in determining the performance and efficiency of gasoline engines. Understanding its significance helps drivers make informed choices about the fuel they use. While high-performance vehicles may require high octane numbers to avoid knocking and achieve optimal performance, standard vehicles may not benefit from such fuels. Additionally, the environmental implications of fuel choice cannot be overlooked. As we move towards a more sustainable future, the importance of octane number will continue to evolve, shaping the way we think about fuel consumption and engine efficiency.

发动机的性能通常通过其效率和功率输出进行衡量。影响这些参数的关键因素之一是用于发动机的燃料。在各种燃料中，汽油是最常见的，其质量可以显著影响发动机性能。汽油质量的一个关键方面是其辛烷值，这是衡量燃料在燃烧过程中抵抗敲击或爆鸣能力的指标。敲击发生在燃料在发动机气缸内过早点燃时，导致性能下降和潜在的发动机损坏。因此，理解辛烷值的概念对汽车拥有者和制造商都至关重要。辛烷值指示燃料能够承受多少压缩而不点燃。更高的辛烷值表明燃料可以在不敲击的情况下承受更大的压缩，这使其适合高性能发动机，这些发动机在更高的压缩比下运行。例如，优质汽油的辛烷值通常为91或更高，而普通汽油的辛烷值通常约为87。使用低于推荐的辛烷值的燃料可能会导致发动机敲击，这不仅会影响性能，还可能对发动机部件造成长期损害。近年来，汽车工业在发动机技术方面取得了重大进展，导致开发出需要更高辛烷值以获得最佳性能的发动机。这些发动机旨在从燃料中提取最大功率，这在跑车和豪华车中尤为重要。因此，对高辛烷燃料的需求增加，促使燃料制造商为消费者生产更多选择。然而，人们对辛烷值与燃油经济性之间的关系往往存在误解。许多司机认为，使用辛烷值更高的燃料会自动导致更好的燃油效率。虽然高性能发动机确实受益于更高的辛烷值，但设计为使用普通汽油的标准发动机在使用优质燃料时并不会看到燃油经济性的改善。实际上，在标准发动机中使用更高的辛烷值燃料可能只是浪费金钱，因为该发动机并未设计为利用额外的抗敲击能力。此外，环境考虑在关于燃料质量的讨论中也变得越来越重要。具有更高辛烷值的燃料往往产生更少的排放，这对空气质量和整体环境健康是有益的。随着各国政府对汽车排放实施更严格的法规，辛烷值在减少污染物方面的作用变得更加关键。因此，消费者在选择车辆燃料时，不仅应考虑辛烷值的性能方面，还应考虑其对环境的影响。总之，辛烷值是决定汽油发动机性能和效率的重要因素。理解其重要性有助于驾驶者做出明智的燃料选择。虽然高性能车辆可能需要高辛烷值以避免敲击并实现最佳性能，但标准车辆可能不会从这种燃料中受益。此外，燃料选择的环境影响也不能被忽视。随着我们朝着更可持续的未来迈进，辛烷值的重要性将继续演变，塑造我们对燃料消耗和发动机效率的思考方式。