scavenging ratio

简明释义

扫气率

英英释义

例句

1.The engine's performance improved significantly when the scavenging ratio 排气比 was optimized.

当排气比优化时，发动机的性能显著提升。

2.The scavenging ratio 排气比 affects the overall efficiency of the turbocharger.

排气比影响涡轮增压器的整体效率。

3.Adjusting the scavenging ratio 排气比 is crucial for achieving optimal combustion.

调整排气比对于实现最佳燃烧至关重要。

4.Engine designers often focus on the scavenging ratio 排气比 to enhance power output.

发动机设计师通常关注排气比以增强功率输出。

5.A higher scavenging ratio 排气比 can lead to better fuel efficiency in two-stroke engines.

更高的排气比可以提高二冲程发动机的燃油效率。

作文

The concept of the scavenging ratio is crucial in the field of internal combustion engines, particularly when analyzing their performance and efficiency. The scavenging ratio refers to the ratio of the volume of fresh air-fuel mixture that enters the combustion chamber to the volume of exhaust gases that are expelled during the scavenging process. This parameter plays a significant role in determining how effectively an engine can clear out burnt gases and prepare for the next cycle of combustion. A higher scavenging ratio typically indicates better engine efficiency, as it suggests that more fresh mixture is available for combustion, thus enhancing power output and reducing emissions.Understanding the scavenging ratio involves delving into the mechanics of engine design and operation. In two-stroke engines, for instance, the scavenging process is critical because these engines do not have valves like four-stroke engines. Instead, they rely on ports for the intake and exhaust processes. The design of these ports and the timing of their opening and closing directly influence the scavenging ratio. If the ports are optimized, the engine can achieve a high scavenging ratio, leading to improved performance and reduced residual exhaust gases.In addition to design considerations, the scavenging ratio can also be affected by operational conditions. Factors such as engine speed, load, and even atmospheric pressure can impact how well the scavenging process occurs. For example, at higher engine speeds, there may be insufficient time for the exhaust gases to exit completely before the fresh mixture enters, resulting in a lower scavenging ratio. Therefore, engineers must consider these variables when designing engines to ensure optimal performance across a range of operating conditions.Moreover, the implications of the scavenging ratio extend beyond mere performance metrics. A well-optimized scavenging ratio contributes to better fuel efficiency and lower emissions, which are critical factors in today's automotive industry. As environmental regulations become stricter, manufacturers are increasingly focused on improving the scavenging ratio to meet these standards while maintaining or enhancing engine performance.In conclusion, the scavenging ratio is a vital parameter in internal combustion engine design and operation. Its impact on engine efficiency, power output, and emissions cannot be overstated. By understanding and optimizing the scavenging ratio, engineers can develop engines that not only perform better but also align with the growing demand for sustainability in the automotive sector. As technology advances, the study of the scavenging ratio will continue to play a pivotal role in shaping the future of engine design and performance.

“清扫比”这一概念在内燃机领域至关重要，尤其是在分析其性能和效率时。“清扫比”是指进入燃烧室的新鲜空气-燃料混合物的体积与在清扫过程中排出的废气体积之比。这个参数在决定发动机多有效地清除燃烧气体并为下一个燃烧周期做好准备方面发挥着重要作用。较高的“清扫比”通常表明更好的发动机效率，因为它表明有更多的新鲜混合气可用于燃烧，从而增强功率输出并减少排放。理解“清扫比”需要深入研究发动机设计和操作的机制。例如，在两冲程发动机中，清扫过程至关重要，因为这些发动机没有像四冲程发动机那样的气门。相反，它们依赖于进气和排气过程的端口。这些端口的设计以及其开闭时机直接影响“清扫比”。如果端口经过优化，发动机就能实现较高的“清扫比”，从而提高性能并减少残留的废气。除了设计考虑外，“清扫比”还可能受到操作条件的影响。发动机转速、负载甚至大气压力等因素都可能影响清扫过程的效果。例如，在较高的发动机转速下，可能没有足够的时间让废气完全排出，然后新鲜混合气就进入了，这导致“清扫比”降低。因此，工程师在设计发动机时必须考虑这些变量，以确保在各种操作条件下的最佳性能。此外，“清扫比”的影响不仅限于性能指标。良好优化的“清扫比”有助于提高燃油效率和降低排放，这在当今汽车行业中是至关重要的。随着环境法规变得愈加严格，制造商越来越关注改善“清扫比”，以满足这些标准，同时保持或提升发动机性能。总之，“清扫比”是内燃机设计和操作中的一个重要参数。它对发动机效率、功率输出和排放的影响不容小觑。通过理解和优化“清扫比”，工程师可以开发出不仅性能更佳，而且符合汽车行业日益增长的可持续发展需求的发动机。随着技术的进步，“清扫比”的研究将继续在塑造未来发动机设计和性能方面发挥关键作用。