cetane number

简明释义

十六烷值

英英释义

例句

1.A fuel with a low cetane number can cause hard starting and increased emissions.

低十六烷值的燃料可能导致启动困难和排放增加。

2.The diesel engine's performance can be significantly affected by its cetane number.

柴油发动机的性能会受到其十六烷值的显著影响。

3.Higher cetane numbers generally lead to smoother engine operation.

更高的十六烷值通常会导致发动机运行更加平稳。

4.Testing the cetane number is essential for ensuring fuel quality.

测试十六烷值对确保燃料质量至关重要。

5.To meet emission standards, many manufacturers are increasing the cetane number of their fuels.

为了满足排放标准，许多制造商正在提高其燃料的十六烷值。

作文

The cetane number, often abbreviated as CN, is a critical parameter in the world of diesel fuel. It serves as a measure of the fuel's ignition quality, indicating how readily it will ignite when injected into a hot engine cylinder. The higher the cetane number, the shorter the ignition delay, which means that the fuel ignites more quickly after being injected. This property is essential for the efficient operation of diesel engines, as it directly influences performance, emissions, and overall engine efficiency.Understanding the significance of the cetane number is vital for both manufacturers and consumers. Diesel fuels with higher cetane numbers tend to produce less smoke and fewer unburned hydrocarbons, leading to reduced emissions. This is particularly important in today’s environmentally conscious market, where regulatory standards for vehicle emissions are becoming increasingly stringent. For instance, fuels with a cetane number of 40 or lower may result in poor combustion, leading to increased soot production and harmful emissions. In contrast, fuels with a cetane number of 50 or above are generally considered to be of higher quality and more environmentally friendly.Moreover, the cetane number can significantly affect engine performance. A higher cetane number typically results in smoother engine operation, reduced noise, and improved cold-start performance. This is particularly beneficial in colder climates where diesel engines may struggle to start due to low temperatures affecting fuel properties. By using fuel with an appropriate cetane number, drivers can ensure that their engines run efficiently and reliably, reducing the likelihood of breakdowns and maintenance issues.In addition to its impact on emissions and performance, the cetane number can also influence fuel economy. Engines that operate with fuels that have a higher cetane number can achieve better fuel efficiency, as they burn more completely and effectively. This not only saves money for consumers but also contributes to reducing the overall environmental footprint of diesel vehicles.It is worth noting that the cetane number is not the only factor to consider when choosing diesel fuel. Other properties, such as the fuel's density, viscosity, and sulfur content, also play crucial roles in determining overall fuel quality. However, the cetane number remains one of the most straightforward and important measures of diesel fuel quality.In conclusion, the cetane number is a fundamental aspect of diesel fuel that affects ignition quality, engine performance, emissions, and fuel efficiency. As the automotive industry continues to evolve and place greater emphasis on sustainability and environmental responsibility, understanding the importance of the cetane number will become increasingly relevant for consumers and manufacturers alike. By prioritizing fuels with higher cetane numbers, we can contribute to cleaner air and a more sustainable future while enjoying the benefits of improved engine performance and efficiency.

十六烷值，通常缩写为CN，是柴油燃料世界中的一个关键参数。它作为燃料点火质量的衡量标准，表明燃料在注入热发动机气缸时的点火难易程度。十六烷值越高，点火延迟越短，这意味着燃料在被注入后更快点燃。这一特性对于柴油发动机的高效运行至关重要，因为它直接影响性能、排放和整体发动机效率。理解十六烷值的重要性对于制造商和消费者都至关重要。具有较高十六烷值的柴油燃料往往产生更少的烟雾和未燃烧的碳氢化合物，从而减少排放。这在当今环保意识日益增强的市场中尤为重要，车辆排放的监管标准越来越严格。例如，十六烷值为40或以下的燃料可能导致燃烧不良，增加烟尘的产生和有害排放。相比之下，十六烷值为50或以上的燃料通常被认为质量更高，更加环保。此外，十六烷值还会显著影响发动机性能。较高的十六烷值通常会导致发动机运行更平稳、噪音更小以及冷启动性能更好。这在寒冷气候中尤其有利，因为柴油发动机在低温下可能因燃料性质受影响而难以启动。通过使用适当十六烷值的燃料，驾驶者可以确保他们的发动机高效可靠地运行，减少故障和维护问题的可能性。除了对排放和性能的影响外，十六烷值还可能影响燃油经济性。使用具有较高十六烷值的燃料运行的发动机可以实现更好的燃油效率，因为它们燃烧得更完全和有效。这不仅为消费者节省了费用，还帮助减少柴油车辆的整体环境足迹。值得注意的是，十六烷值并不是选择柴油燃料时唯一需要考虑的因素。燃料的密度、粘度和硫含量等其他特性也在决定整体燃料质量方面发挥着关键作用。然而，十六烷值仍然是最简单明了且重要的柴油燃料质量衡量标准之一。总之，十六烷值是柴油燃料的基本方面，影响着点火质量、发动机性能、排放和燃油效率。随着汽车工业的不断发展，越来越重视可持续性和环境责任，理解十六烷值的重要性将对消费者和制造商变得越来越相关。通过优先选择具有较高十六烷值的燃料，我们可以为清洁空气和更加可持续的未来做出贡献，同时享受改善的发动机性能和效率的好处。