dynamometer card

简明释义

测力记录卡

英英释义

例句

1.The engineer analyzed the dynamometer card to determine the engine's performance characteristics.

工程师分析了dynamometer card以确定发动机的性能特征。

2.During the workshop, we learned how to read a dynamometer card effectively.

在研讨会上，我们学习了如何有效地读取dynamometer card。

3.The technician calibrated the machine using data from the dynamometer card.

技术员使用dynamometer card中的数据对机器进行了校准。

4.The dynamometer card revealed that the torque output was higher than expected.

该dynamometer card显示扭矩输出高于预期。

5.After running the tests, we printed the dynamometer card for further evaluation.

测试完成后，我们打印了dynamometer card以便进一步评估。

作文

In the world of mechanical engineering and automotive testing, the term dynamometer card holds significant importance. A dynamometer card is essentially a graphical representation that shows the performance characteristics of an engine or a motor under various load conditions. This card is produced by a device known as a dynamometer, which measures force, torque, and rotational speed. By analyzing the data collected during these tests, engineers can gain valuable insights into the efficiency and operational capabilities of the machinery being tested.The primary purpose of a dynamometer card is to provide a visual summary of the engine’s performance metrics, which include horsepower, torque, and RPM (revolutions per minute). These parameters are crucial for understanding how well an engine operates under different conditions. For instance, when an engine is tested on a dynamometer, it is subjected to various loads, and the resulting data is plotted on the dynamometer card. This allows engineers to identify the optimal operating range for the engine.One of the key aspects of interpreting a dynamometer card is understanding the shape and characteristics of the curves presented. The horsepower curve typically rises with increasing RPM until it reaches a peak, after which it begins to decline. Conversely, the torque curve usually peaks at a lower RPM compared to horsepower and then gradually decreases. This information is invaluable for tuning engines and improving their performance, as it helps in determining the best gear ratios and other adjustments needed for specific applications.Moreover, a dynamometer card can also reveal issues such as engine knock, inefficiencies, or power loss due to mechanical failures. By comparing the data from different runs, engineers can pinpoint inconsistencies and make necessary modifications to enhance the engine's reliability and performance. In racing and high-performance applications, this data becomes even more critical, as every fraction of a second can make a significant difference in outcomes.Additionally, the use of dynamometer cards is not limited to automotive engines; they are also employed in various industries, including aerospace, marine, and industrial machinery testing. Each application may require specific adaptations of the test procedure, but the fundamental principles of measuring and analyzing performance remain consistent. This versatility makes dynamometer cards an essential tool across multiple fields.In conclusion, the dynamometer card serves as a vital instrument in the evaluation and optimization of engine performance. Understanding its components and how to interpret the data it provides is crucial for engineers and technicians alike. As technology evolves and engines become more complex, the ability to effectively utilize a dynamometer card will continue to play a pivotal role in advancing engineering practices and enhancing the performance of various types of machinery. Whether in a laboratory setting or on the racetrack, the insights gained from dynamometer cards will undoubtedly contribute to the ongoing quest for efficiency and excellence in engineering design.

在机械工程和汽车测试的世界中，术语dynamometer card具有重要意义。dynamometer card本质上是一种图形表示，展示了发动机或电动机在不同负载条件下的性能特征。该卡片由称为测功机的设备生成，该设备测量力、扭矩和转速。通过分析在这些测试过程中收集的数据，工程师可以获得关于被测试机械的效率和操作能力的宝贵见解。dynamometer card的主要目的是提供发动机性能指标的视觉摘要，包括马力、扭矩和转速（RPM）。这些参数对于理解发动机在不同条件下的工作情况至关重要。例如，当一个发动机在测功机上进行测试时，它会受到各种负载的影响，所产生的数据会被绘制在dynamometer card上。这使得工程师能够确定发动机的最佳工作范围。解释dynamometer card的一个关键方面是理解所呈现曲线的形状和特征。马力曲线通常随着转速的增加而上升，直到达到峰值，然后开始下降。相反，扭矩曲线通常在较低的转速处达到峰值，然后逐渐下降。这些信息对调校发动机和提高其性能至关重要，因为它有助于确定特定应用所需的最佳齿轮比和其他调整。此外，dynamometer card还可以揭示诸如发动机爆震、效率低下或由于机械故障造成的动力损失等问题。通过比较不同测试结果的数据，工程师可以找出不一致之处，并进行必要的修改，以增强发动机的可靠性和性能。在赛车和高性能应用中，这些数据变得更加关键，因为每一毫秒的差异都可能对结果产生重大影响。此外，dynamometer cards的使用并不限于汽车发动机；它们还被广泛应用于航空航天、海洋和工业机械测试等多个行业。每个应用可能需要特定的测试程序调整，但测量和分析性能的基本原则保持一致。这种多功能性使得dynamometer cards成为多个领域的重要工具。总之，dynamometer card作为评估和优化发动机性能的重要工具。理解其组成部分以及如何解释其提供的数据对于工程师和技术人员而言至关重要。随着技术的发展和发动机变得更加复杂，有效利用dynamometer card的能力将继续在推动工程实践进步和提升各种类型机械性能方面发挥关键作用。无论是在实验室环境中还是在赛道上，从dynamometer cards中获得的见解无疑将有助于不断追求工程设计的效率和卓越。