cross flow scavenging

简明释义

横流扫气

英英释义

例句

1.A well-tuned cross flow scavenging system can significantly reduce emissions in high-performance engines.

一个调校良好的交叉流清扫系统可以显著减少高性能发动机的排放。

2.The design of the cylinder head was optimized for cross flow scavenging to enhance performance.

气缸盖的设计经过优化，以提高交叉流清扫的性能。

3.Mechanics often discuss the advantages of cross flow scavenging in racing applications.

机械师们经常讨论交叉流清扫在赛车应用中的优势。

4.In two-stroke engines, cross flow scavenging helps to ensure that fresh fuel enters the combustion chamber effectively.

在二冲程发动机中，交叉流清扫有助于确保新鲜燃料有效进入燃烧室。

5.The engine utilizes cross flow scavenging to improve the efficiency of exhaust gas removal.

该发动机利用交叉流清扫来提高废气排放的效率。

作文

In the world of internal combustion engines, various methods are employed to enhance efficiency and performance. One such method is cross flow scavenging, which plays a crucial role in the operation of two-stroke engines. This technique involves the movement of fresh air-fuel mixture across the cylinder from one side to the other, effectively pushing out exhaust gases. The design of the engine's ports is critical in this process, as it allows for optimal flow dynamics. By utilizing cross flow scavenging, engineers can significantly improve the scavenging efficiency, leading to better power output and reduced emissions.The principle behind cross flow scavenging is relatively straightforward. In a typical two-stroke engine, the intake and exhaust ports are positioned on opposite sides of the cylinder. When the piston moves down, it creates a vacuum that draws in the fresh mixture while simultaneously expelling the burnt gases. This cross-flow pattern ensures that the incoming charge sweeps through the cylinder, displacing the residual exhaust gases effectively. As a result, the engine can achieve a more complete combustion cycle, which is essential for maximizing performance.Moreover, the advantages of cross flow scavenging extend beyond mere power gains. With improved scavenging efficiency, the engine operates at a lower temperature, which can enhance its longevity and reliability. Additionally, better fuel atomization leads to a more efficient burn, reducing the amount of unburnt fuel that contributes to harmful emissions. This characteristic is particularly important in today’s environmentally conscious world, where manufacturers are under increasing pressure to meet stringent emission regulations.However, implementing cross flow scavenging is not without its challenges. The design of the engine must be meticulously crafted to ensure that the flow dynamics work harmoniously. If the ports are not properly aligned or sized, the intended benefits may not be realized. Furthermore, tuning the engine to achieve the ideal balance between intake and exhaust flow requires extensive testing and refinement.In conclusion, cross flow scavenging is a vital technique in the realm of two-stroke engine design. It offers numerous benefits, including enhanced power output, improved thermal efficiency, and reduced emissions. As automotive technology continues to evolve, understanding and mastering methods like cross flow scavenging will be essential for engineers aiming to create high-performance, environmentally friendly engines. This method exemplifies how innovative engineering solutions can lead to significant advancements in engine technology, ultimately benefiting both manufacturers and consumers alike.

在内燃机的世界中，采用各种方法来提高效率和性能。其中一种方法是交叉流清扫，它在二冲程发动机的运行中发挥着至关重要的作用。这种技术涉及新鲜空气-燃料混合物从气缸的一侧移动到另一侧，有效地推动废气排出。发动机进气口的设计在这个过程中至关重要，因为它允许最佳流动动态。通过利用交叉流清扫，工程师可以显著提高清扫效率，从而提高功率输出并减少排放。交叉流清扫背后的原理相对简单。在典型的二冲程发动机中，进气口和排气口位于气缸的对侧。当活塞向下移动时，会产生一个真空，吸入新鲜混合物，同时排出燃烧后的气体。这种交叉流模式确保了进入的气体充满气缸，有效地置换残余的废气。因此，发动机能够实现更完整的燃烧循环，这对于最大化性能至关重要。此外，交叉流清扫的优势不仅限于动力提升。随着清扫效率的提高，发动机在较低温度下运行，这可以增强其耐久性和可靠性。此外，更好的燃料雾化导致更高效的燃烧，减少未燃燃料的排放，这些未燃燃料会对有害排放造成贡献。在当今环保意识日益增强的世界中，这一特征尤其重要，因为制造商面临着越来越严格的排放法规。然而，实施交叉流清扫并非没有挑战。发动机的设计必须经过精心制作，以确保流动动态和谐。如果进气口没有正确对齐或尺寸不当，则可能无法实现预期的好处。此外，调整发动机以实现进气和排气流之间的理想平衡需要大量的测试和改进。总之，交叉流清扫是二冲程发动机设计中的一项重要技术。它提供了许多好处，包括增强的功率输出、改善的热效率和降低的排放。随着汽车技术的不断发展，理解和掌握像交叉流清扫这样的技术将对工程师创造高性能、环保的发动机至关重要。这种方法体现了创新工程解决方案如何导致发动机技术的重大进步，最终使制造商和消费者都受益。