brake mean effective pressure

简明释义

平均制动有效压力平均有效制动压力

英英释义

例句

1.A higher brake mean effective pressure usually means more power output from the engine.

更高的刹车平均有效压力通常意味着发动机输出更多的功率。

2.To improve vehicle performance, engineers often analyze the brake mean effective pressure during testing.

为了改善车辆性能，工程师们通常在测试过程中分析刹车平均有效压力。

3.The engine's performance can be evaluated by measuring the brake mean effective pressure, which indicates its efficiency.

通过测量刹车平均有效压力来评估发动机的性能，这表明其效率。

4.The brake mean effective pressure is a crucial parameter in understanding the thermodynamic efficiency of an engine.

刹车平均有效压力是理解发动机热力学效率的重要参数。

5.Engine designers strive to optimize the brake mean effective pressure for better fuel economy.

发动机设计师努力优化刹车平均有效压力以提高燃油经济性。

作文

Understanding the concept of brake mean effective pressure is crucial for anyone involved in the field of engine performance and design. This term refers to the average pressure in the combustion chamber of an engine during a complete cycle, which significantly influences the engine's efficiency and power output. The brake mean effective pressure is not just a number; it encapsulates the effectiveness of the engine in converting fuel into mechanical work. In essence, brake mean effective pressure (often abbreviated as BMEP) is a measure of the engine's ability to perform work over a given period. It is calculated by taking the total work done by the engine in one cycle and dividing it by the displacement volume of the engine. This metric is particularly useful because it allows engineers and designers to compare the performance of different engines regardless of their size or configuration.The significance of brake mean effective pressure can be observed when analyzing engine performance. Higher BMEP values indicate that an engine can produce more power from a smaller displacement, which is often desirable in automotive design. For instance, a turbocharged engine may have a higher brake mean effective pressure compared to a naturally aspirated engine of the same size due to the increased air intake and improved combustion efficiency. This means that the turbocharged engine can achieve better performance without necessarily increasing its physical size.Moreover, understanding brake mean effective pressure helps in optimizing engine tuning and performance modifications. By adjusting factors such as fuel mixture, ignition timing, and boost pressure in forced induction systems, engineers can maximize the BMEP, leading to improved acceleration and overall performance. This optimization process is essential in motorsports, where every fraction of a second counts and the difference between winning and losing can hinge on engine efficiency.In practical applications, the brake mean effective pressure can also serve as a diagnostic tool. If an engine's BMEP is lower than expected, it may indicate issues such as poor fuel quality, inadequate air supply, or mechanical problems within the engine itself. By monitoring this parameter, technicians can identify and address potential issues before they lead to significant failures.In conclusion, the term brake mean effective pressure is integral to understanding engine performance. It provides valuable insights into how effectively an engine converts fuel into work and serves as a benchmark for comparing different engine designs. Whether in the context of automotive engineering, motorsports, or general mechanics, grasping the implications of BMEP can lead to better engine performance, efficiency, and reliability. As technology advances and the demand for high-performance engines increases, the importance of mastering the concept of brake mean effective pressure will only continue to grow.

理解制动平均有效压力的概念对于任何参与发动机性能和设计领域的人来说都是至关重要的。这个术语指的是发动机燃烧室在一个完整循环中平均压力，这对发动机的效率和功率输出有着显著影响。制动平均有效压力不仅仅是一个数字；它概括了发动机将燃料转化为机械功的有效性。从本质上讲，制动平均有效压力（通常缩写为BMEP）是一个衡量发动机在给定时间内执行工作的能力的指标。它通过将发动机在一个循环中完成的总工作除以发动机的排量来计算。这个指标特别有用，因为它允许工程师和设计师比较不同发动机的性能，而不考虑它们的大小或配置。制动平均有效压力的重要性可以在分析发动机性能时观察到。较高的BMEP值表明发动机可以从较小的排量中产生更多的功率，这在汽车设计中往往是可取的。例如，相比同样大小的自然吸气发动机，涡轮增压发动机可能具有更高的制动平均有效压力，这是由于空气摄入量的增加和燃烧效率的提高。这意味着涡轮增压发动机能够在不增加其物理体积的情况下实现更好的性能。此外，理解制动平均有效压力有助于优化发动机调校和性能改进。通过调整燃料混合物、点火时机以及强制进气系统中的增压压力等因素，工程师可以最大化BMEP，从而提高加速性能和整体表现。这种优化过程在赛车运动中至关重要，因为每一毫秒都至关重要，而胜负之间的差异可能在于发动机的效率。在实际应用中，制动平均有效压力也可以作为一种诊断工具。如果发动机的BMEP低于预期，这可能表明存在燃料质量差、空气供应不足或发动机内部机械故障等问题。通过监测这一参数，技术人员可以在问题导致重大故障之前识别并解决潜在问题。总之，术语制动平均有效压力对于理解发动机性能至关重要。它提供了有关发动机如何有效地将燃料转化为功的宝贵见解，并作为比较不同发动机设计的基准。无论是在汽车工程、赛车运动还是一般机械领域，掌握BMEP的含义都能带来更好的发动机性能、效率和可靠性。随着技术的进步和对高性能发动机需求的增加，掌握制动平均有效压力概念的重要性只会继续增长。