pumping loss

简明释义

泵唧损失

英英释义

例句

1.The pumping loss in the system was identified as a major inefficiency.

系统中的泵送损失被确定为主要低效因素。

2.During testing, we measured the pumping loss at various RPMs to understand its impact.

在测试过程中，我们测量了不同转速下的泵送损失以了解其影响。

3.To improve efficiency, engineers focused on reducing pumping loss in the new design.

为了提高效率，工程师们专注于减少新设计中的泵送损失。

4.The engine experienced a significant pumping loss due to the high intake resistance.

由于进气阻力过大，发动机经历了显著的泵送损失。

5.Reducing pumping loss can lead to better fuel economy in vehicles.

减少泵送损失可以提高车辆的燃油经济性。

作文

In the world of engineering and automotive design, efficiency is a key goal that drives innovation and development. One of the critical factors that engineers must consider when designing engines is the concept of pumping loss. This term refers to the energy that is lost during the intake and exhaust processes of an engine, particularly in internal combustion engines. Understanding pumping loss is essential for improving engine performance and fuel efficiency.When an engine operates, it goes through a cycle of drawing in air and expelling exhaust gases. During this process, the engine must create a vacuum to pull in air, which requires energy. This energy consumption is what we refer to as pumping loss. The greater the difference between the atmospheric pressure and the pressure inside the intake manifold, the more energy the engine must expend to draw in air. This is particularly noticeable at low engine speeds, where the engine struggles to pull in enough air to maintain optimal performance.Additionally, pumping loss can be exacerbated by various factors such as throttle position and engine load. For instance, when the throttle is partially closed, the engine experiences increased resistance to airflow, leading to greater pumping loss. This is why many modern engines are designed with variable valve timing and other technologies aimed at reducing this loss and improving overall efficiency.Reducing pumping loss is not just about improving engine performance; it also has significant implications for fuel economy. When an engine expends less energy on overcoming the resistance of drawing in air, more energy can be used for actual power generation. This means that vehicles can achieve better mileage, which is increasingly important in today's environmentally conscious world.Moreover, the concept of pumping loss extends beyond just traditional internal combustion engines. In electric vehicles (EVs), while the term may not apply directly, the principles of energy efficiency still hold true. Engineers must ensure that the systems in place for managing airflow and cooling do not introduce unnecessary energy losses. Thus, understanding the dynamics of pumping loss can provide valuable insights into creating more efficient designs across various types of vehicles.In conclusion, pumping loss is a crucial factor in the design and operation of engines, affecting both performance and fuel efficiency. By minimizing this loss, engineers can enhance the overall effectiveness of engines, contributing to better fuel economy and reduced emissions. As technology continues to evolve, the challenge remains to find innovative solutions to reduce pumping loss and improve the efficiency of both traditional and modern vehicles. Understanding this concept is essential for anyone involved in automotive engineering or interested in the future of transportation.

在工程和汽车设计的世界中，效率是推动创新和发展的一个关键目标。工程师在设计发动机时必须考虑的一个关键因素是“泵送损失”的概念。这个术语指的是在发动机的进气和排气过程中，特别是在内燃机中，所损失的能量。理解泵送损失对于提高发动机性能和燃油效率至关重要。当发动机运行时，它会经历吸入空气和排出废气的周期。在此过程中，发动机必须产生真空以吸入空气，这需要能量。这种能量消耗就是我们所说的泵送损失。大气压力与进气歧管内压力之间的差异越大，发动机就必须花费更多的能量来吸入空气。这在低转速下尤为明显，此时发动机很难吸入足够的空气以维持最佳性能。此外，泵送损失还可能因节气门位置和发动机负荷等各种因素而加剧。例如，当节气门部分关闭时，发动机的气流阻力增加，从而导致泵送损失的增加。这就是为什么许多现代发动机采用可变气门正时和其他旨在减少这种损失、提高整体效率的技术。减少泵送损失不仅仅是为了提高发动机性能；它对燃油经济性也有重大影响。当发动机在克服吸入空气的阻力上消耗更少的能量时，更多的能量可以用于实际的动力生成。这意味着车辆可以实现更好的里程，这在当今环保意识日益增强的世界中变得越来越重要。此外，泵送损失的概念不仅限于传统的内燃机。在电动汽车（EV）中，虽然该术语可能不直接适用，但能量效率的原则仍然成立。工程师必须确保管理气流和冷却的系统不会引入不必要的能量损失。因此，理解泵送损失的动态可以为创建各种类型车辆的更高效设计提供宝贵的见解。总之，泵送损失是发动机设计和运行中的一个关键因素，影响着性能和燃油效率。通过最小化这种损失，工程师可以增强发动机的整体有效性，从而提高燃油经济性并减少排放。随着技术的不断发展，挑战依然是寻找创新解决方案以减少泵送损失并提高传统和现代车辆的效率。理解这一概念对于任何参与汽车工程或对交通运输的未来感兴趣的人来说都是至关重要的。