average ignition delay time

简明释义

平均哗廷时

英英释义

例句

1.Engineers aim to optimize the average ignition delay time for better combustion stability.

工程师们旨在优化平均点火延迟时间以提高燃烧稳定性。

2.The average ignition delay time can vary depending on the type of fuel used in the combustion process.

在燃烧过程中，平均点火延迟时间可能因使用的燃料类型而异。

3.Reducing the average ignition delay time can lead to improved fuel efficiency in diesel engines.

减少平均点火延迟时间可以提高柴油发动机的燃油效率。

4.In our tests, the average ignition delay time was significantly shorter with the new fuel additive.

在我们的测试中，新燃料添加剂使得平均点火延迟时间显著缩短。

5.The engine's performance was evaluated based on its average ignition delay time, which refers to the time it takes for the fuel to ignite after injection.

发动机的性能评估基于其平均点火延迟时间，即燃料喷入后点燃所需的时间。

作文

In the field of combustion science, understanding the concept of average ignition delay time is crucial for optimizing engine performance and reducing emissions. The average ignition delay time refers to the time interval between the start of fuel injection into the combustion chamber and the moment when the fuel-air mixture ignites. This parameter plays a significant role in determining the efficiency of an engine, as it directly influences the combustion process and the overall power output. A shorter average ignition delay time can lead to more efficient combustion, resulting in better fuel economy and lower emissions. To illustrate the importance of average ignition delay time, consider a diesel engine, which relies on compression ignition. In such engines, the fuel is injected into the combustion chamber at high pressure and temperature, causing it to ignite spontaneously due to the heat generated by compression. If the average ignition delay time is too long, the fuel may not ignite at the optimal point in the engine cycle, leading to incomplete combustion. This can result in increased emissions of pollutants such as nitrogen oxides (NOx) and particulate matter, as well as reduced engine performance. On the other hand, if the average ignition delay time is too short, it can lead to knocking or pre-ignition, which can damage engine components. Therefore, achieving the right balance is essential for maximizing efficiency and minimizing harmful emissions. Researchers and engineers are constantly working to understand the factors that influence average ignition delay time, such as fuel composition, temperature, pressure, and engine design. Various experimental techniques and computational models have been developed to study average ignition delay time. For example, using high-speed imaging and laser diagnostics, scientists can visualize the ignition process and measure the average ignition delay time under different conditions. These studies help in identifying the optimal conditions for ignition and can guide the development of advanced fuels and engine technologies. Moreover, the average ignition delay time can vary significantly between different types of fuels. For instance, biodiesel generally has a longer average ignition delay time compared to conventional diesel, which can affect its performance in existing diesel engines. Understanding these differences is essential for transitioning to more sustainable fuel sources without compromising engine efficiency. In conclusion, the average ignition delay time is a fundamental parameter in combustion science that significantly impacts engine performance and emissions. By optimizing this parameter, we can enhance the efficiency of internal combustion engines and contribute to a cleaner environment. Ongoing research in this area will continue to provide valuable insights that can lead to the development of more efficient and environmentally friendly engine technologies.

在燃烧科学领域，理解平均点火延迟时间的概念对于优化发动机性能和减少排放至关重要。平均点火延迟时间是指燃料注入燃烧室开始与燃料-空气混合物点燃之间的时间间隔。这个参数在决定发动机效率方面起着重要作用，因为它直接影响燃烧过程和整体功率输出。较短的平均点火延迟时间可以导致更高效的燃烧，从而实现更好的燃油经济性和更低的排放。为了说明平均点火延迟时间的重要性，可以考虑柴油发动机，该发动机依赖于压缩点火。在这种发动机中，燃料以高压和高温注入燃烧室，因而由于压缩产生的热量而自发点燃。如果平均点火延迟时间过长，燃料可能无法在发动机循环的最佳时刻点燃，导致燃烧不完全。这可能导致氮氧化物（NOx）和颗粒物等污染物的排放增加，以及发动机性能降低。另一方面，如果平均点火延迟时间过短，可能会导致敲击或提前点火，这可能会损坏发动机部件。因此，达到正确的平衡对最大化效率和最小化有害排放至关重要。研究人员和工程师们不断努力理解影响平均点火延迟时间的因素，例如燃料成分、温度、压力和发动机设计。已经开发出各种实验技术和计算模型来研究平均点火延迟时间。例如，利用高速成像和激光诊断，科学家可以可视化点火过程并在不同条件下测量平均点火延迟时间。这些研究有助于识别点火的最佳条件，并可以指导先进燃料和发动机技术的发展。此外，不同类型燃料之间的平均点火延迟时间可能会显著不同。例如，生物柴油的平均点火延迟时间通常比常规柴油更长，这可能会影响其在现有柴油发动机中的性能。理解这些差异对于在不妨碍发动机效率的情况下过渡到更可持续的燃料来源至关重要。总之，平均点火延迟时间是燃烧科学中的一个基本参数，对发动机性能和排放有显著影响。通过优化这一参数，我们可以提高内燃机的效率，并为清洁环境做出贡献。在这一领域的持续研究将继续提供宝贵的见解，推动更高效和环保的发动机技术的发展。