prony's dynamometer

简明释义

一种制动动力计

英英释义

例句

1.The engineer used a prony's dynamometer to measure the torque output of the motor.

工程师使用普罗尼测功器来测量电动机的扭矩输出。

2.In our lab, we often rely on a prony's dynamometer for testing the performance of various engines.

在我们的实验室中，我们经常依赖于普罗尼测功器来测试各种发动机的性能。

3.The prony's dynamometer has been a crucial tool in understanding mechanical efficiency.

在理解机械效率方面，普罗尼测功器一直是一个关键工具。

4.Students learned how to calibrate a prony's dynamometer during their engineering course.

学生们在工程课程中学习了如何校准普罗尼测功器。

5.Using a prony's dynamometer can help determine the power output of a steam engine.

使用普罗尼测功器可以帮助确定蒸汽机的功率输出。

作文

The study of mechanical engineering often involves understanding various tools and instruments that help in measuring power and efficiency. One such instrument is the prony's dynamometer, a device invented by the French engineer Henri Prony in the early 19th century. This device is primarily used to measure the torque and power output of engines, making it an essential tool in both automotive and mechanical engineering fields. The prony's dynamometer operates on a simple principle: it uses a brake system to apply a known load to the rotating shaft of an engine. By measuring the force exerted by this load and the speed at which the engine operates, engineers can calculate the power output of the engine with remarkable accuracy.The design of the prony's dynamometer is quite straightforward. It typically consists of a brake mechanism connected to the engine's output shaft, along with a scale to measure the force applied. As the engine operates, the brake applies resistance to the shaft, and the resulting torque can be measured. This measurement, combined with the rotational speed of the shaft, allows for the calculation of horsepower or kilowatts produced by the engine. The simplicity of the prony's dynamometer makes it an accessible tool for many engineers, even those working in less advanced laboratories.Understanding how to use a prony's dynamometer effectively is crucial for engineers who wish to optimize engine performance. By conducting tests with this device, engineers can identify inefficiencies in engine design and operation. For instance, if an engine produces less power than expected, a series of tests using the prony's dynamometer can help pinpoint issues such as excessive friction, improper fuel-air mixture, or mechanical failures. This diagnostic capability is invaluable in both research and development settings, as well as in practical applications such as vehicle performance tuning.Moreover, the prony's dynamometer has historical significance in the evolution of engineering practices. Before its invention, measuring engine power was a complex and often inaccurate process. The introduction of this device marked a significant advancement in the field, paving the way for more sophisticated methods of power measurement. Today, while more advanced electronic dynamometers are commonly used, the prony's dynamometer remains a relevant educational tool. Many engineering students learn about it in their coursework, gaining insights into the fundamental principles of torque and power.In conclusion, the prony's dynamometer is more than just a measuring tool; it represents a critical step in the development of mechanical engineering. Its ability to provide accurate measurements of engine power and torque has made it an enduring component of engineering education and practice. Understanding the function and application of the prony's dynamometer not only enhances one’s grasp of mechanical systems but also fosters a deeper appreciation for the innovations that have shaped modern engineering. As technology continues to advance, the principles behind the prony's dynamometer will remain relevant, reminding us of the importance of foundational tools in the pursuit of engineering excellence.

机械工程的研究通常涉及理解各种工具和仪器，这些工具和仪器有助于测量功率和效率。其中一种仪器是普罗尼测功机，它是由法国工程师亨利·普罗尼在19世纪初发明的。这种设备主要用于测量发动机的扭矩和功率输出，因此在汽车和机械工程领域中，它是一种必不可少的工具。普罗尼测功机的工作原理相对简单：它使用刹车系统向发动机的旋转轴施加已知负载。通过测量该负载施加的力以及发动机运转的速度，工程师可以以相当高的精度计算发动机的功率输出。普罗尼测功机的设计相当简单。它通常由连接到发动机输出轴的刹车机制组成，以及一个测量施加力的刻度。当发动机运转时，刹车会对轴施加阻力，从而可以测量出产生的扭矩。这个测量值，加上轴的旋转速度，使得可以计算出发动机产生的马力或千瓦数。普罗尼测功机的简单性使其成为许多工程师可接触的工具，即使是在不太先进的实验室中。有效使用普罗尼测功机对于希望优化发动机性能的工程师至关重要。通过使用此设备进行测试，工程师可以识别发动机设计和操作中的低效。例如，如果发动机产生的功率低于预期，使用普罗尼测功机进行的一系列测试可以帮助找出诸如过度摩擦、不当的燃油空气混合或机械故障等问题。这种诊断能力在研究与开发环境以及车辆性能调校等实际应用中都具有无价的价值。此外，普罗尼测功机在工程实践的发展历史中具有重要意义。在其发明之前，测量发动机功率是一项复杂且常常不准确的过程。这种设备的引入标志着该领域的一次重大进步，为更复杂的功率测量方法铺平了道路。如今，尽管更先进的电子测功机被广泛使用，但普罗尼测功机仍然是一个相关的教育工具。许多工程学生在课程中学习它，从而深入了解扭矩和功率的基本原理。总之，普罗尼测功机不仅仅是一个测量工具；它代表了机械工程发展中的一个关键步骤。它提供的发动机功率和扭矩的准确测量能力，使其成为工程教育和实践中持久的组成部分。理解普罗尼测功机的功能和应用，不仅增强了人们对机械系统的理解，还促进了对塑造现代工程创新的工具的更深刻的欣赏。随着技术的不断进步，普罗尼测功机背后的原理将继续保持相关性，提醒我们在追求工程卓越的过程中基础工具的重要性。