indicated mean effective pressure

简明释义

指示平均有效压力

英英释义

例句

1.A higher indicated mean effective pressure usually indicates better engine performance under load.

较高的指示平均有效压力通常表明在负载下更好的发动机性能。

2.The test results showed that the indicated mean effective pressure dropped significantly at high temperatures.

测试结果显示，在高温下，指示平均有效压力显著下降。

3.By analyzing the indicated mean effective pressure, engineers can determine the optimal fuel-air mixture for combustion.

通过分析指示平均有效压力，工程师可以确定最佳的燃料-空气混合比以实现燃烧。

4.To improve the vehicle's power output, we need to increase the indicated mean effective pressure through tuning.

为了提高车辆的功率输出，我们需要通过调校来增加指示平均有效压力。

5.The engine's performance was evaluated based on the indicated mean effective pressure, which is a key indicator of its efficiency.

发动机的性能是基于指示平均有效压力进行评估的，这是其效率的一个关键指标。

作文

The concept of indicated mean effective pressure is critical in the field of thermodynamics and engine performance analysis. It refers to the average pressure in the combustion chamber of an engine during a complete cycle, which is indicative of the engine's efficiency and power output. Understanding this term is essential for engineers and researchers who are involved in the design and optimization of internal combustion engines. To appreciate the significance of indicated mean effective pressure, it is important to first consider how engines convert fuel into mechanical energy. When fuel combusts in the cylinder, it generates high pressure that drives the piston down, creating work. The indicated mean effective pressure is calculated by taking the work done by the engine over a cycle and normalizing it against the displacement volume of the engine. This provides a measure of the engine's ability to perform work efficiently.In practical terms, a higher indicated mean effective pressure generally means that the engine can produce more power without increasing its size or weight. This is particularly beneficial in applications where space and weight are critical factors, such as in automotive and aerospace engineering. Engineers strive to maximize this parameter while ensuring that the engine remains reliable and compliant with environmental regulations.Moreover, the indicated mean effective pressure can be influenced by several factors including fuel type, ignition timing, and engine design. For instance, using high-octane fuel can lead to better combustion characteristics, thereby increasing the indicated mean effective pressure. Similarly, optimizing the engine's compression ratio can also enhance this value. Thus, engineers must conduct extensive testing and simulations to find the optimal settings for their specific applications.In summary, the term indicated mean effective pressure encapsulates a key aspect of engine performance that directly correlates with efficiency and power output. By understanding and optimizing this parameter, engineers can significantly improve the performance of internal combustion engines, leading to advancements in technology and sustainability in transportation. As the industry moves towards greener alternatives, maintaining a focus on the indicated mean effective pressure will be crucial in developing engines that not only perform well but also minimize environmental impact.

“指示平均有效压力”这一概念在热力学和发动机性能分析领域至关重要。它指的是发动机燃烧室在一个完整周期内的平均压力，这一压力是发动机效率和功率输出的指示。理解这个术语对从事内燃机设计和优化的工程师和研究人员来说是必不可少的。要理解“指示平均有效压力”的重要性，首先需要考虑发动机如何将燃料转化为机械能。当燃料在气缸内燃烧时，会产生高压，推动活塞下行，从而产生功。“指示平均有效压力”的计算方法是将发动机在一个周期内所做的功与发动机的排量体积进行归一化。这提供了一个衡量发动机高效执行工作的能力的指标。在实际应用中，更高的“指示平均有效压力”通常意味着发动机可以在不增加其体积或重量的情况下产生更多的功率。这在空间和重量是关键因素的应用中尤为有利，例如汽车和航空航天工程。工程师们努力最大化这一参数，同时确保发动机保持可靠并符合环境法规。此外，“指示平均有效压力”还会受到多种因素的影响，包括燃料类型、点火时机和发动机设计。例如，使用高辛烷值燃料可以改善燃烧特性，从而提高“指示平均有效压力”。同样，优化发动机的压缩比也可以增强这一数值。因此，工程师必须进行广泛的测试和模拟，以找到适合其特定应用的最佳设置。总之，“指示平均有效压力”这一术语概括了发动机性能的一个关键方面，与效率和功率输出直接相关。通过理解和优化这一参数，工程师可以显著提升内燃机的性能，推动技术和交通可持续性的进步。随着行业向更环保的替代方案发展，关注“指示平均有效压力”将在开发不仅性能良好且对环境影响最小的发动机方面至关重要。