hand-started engine

简明释义

手起动发动机

英英释义

例句

1.The mechanic explained the differences between a hand-started engine and an electric starter.

机械师解释了手动启动引擎与电启动器之间的区别。

2.During the workshop, we learned how to operate a hand-started engine safely.

在研讨会上，我们学习了如何安全地操作手动启动引擎。

3.The vintage aircraft had a hand-started engine that required the pilot to pull a cord to start it.

这架复古飞机配备了一台手动启动引擎，需要飞行员拉动一根绳子来启动。

4.Many old motorcycles feature a hand-started engine, which adds to their charm.

许多老式摩托车配备了手动启动引擎，这增加了它们的魅力。

5.I love the thrill of starting a hand-started engine on my classic car.

我喜欢在我的经典车上启动手动启动引擎的刺激感。

作文

The world of engineering and mechanics is filled with fascinating innovations that have revolutionized transportation and machinery. One such innovation is the hand-started engine, a marvel of early engineering that played a crucial role in the development of various vehicles and machines. Understanding the significance of the hand-started engine requires delving into its historical context, functionality, and impact on modern technology.Historically, the hand-started engine emerged in the late 19th and early 20th centuries when internal combustion engines were still in their infancy. Unlike today's engines, which often come equipped with electric starters and complex ignition systems, the hand-started engine relied on a simple yet effective manual starting mechanism. This involved using a hand crank to rotate the engine's flywheel, creating the necessary compression and ignition to start the engine. Although this method required physical effort and a certain level of skill, it was a practical solution at the time and allowed for the operation of various types of machinery, including automobiles, motorcycles, and agricultural equipment.The functionality of the hand-started engine is both straightforward and ingenious. When the operator cranks the handle, the engine's pistons move, drawing in fuel and air. As the crank continues to turn, the engine reaches a point where the spark plug ignites the compressed fuel-air mixture, causing the engine to start running. This process not only demonstrates the principles of internal combustion but also highlights the ingenuity of early engineers who designed these systems to be as efficient as possible given the technology of their time.Despite its simplicity, the hand-started engine posed several challenges. For instance, the risk of backfire was significant, which could lead to injury if the operator was not cautious. Additionally, starting an engine manually required strength and perseverance, especially in colder climates where engines were more difficult to start. These challenges eventually led to the development of more advanced starting mechanisms, including electric starters, which have become the standard in modern vehicles.The impact of the hand-started engine on modern technology cannot be overstated. It laid the groundwork for the evolution of engine design and starting mechanisms. Today, while we may not see many hand-started engines in everyday use, their legacy lives on in the form of small engines used in lawnmowers, chainsaws, and other equipment. Moreover, understanding the hand-started engine provides valuable insights into the history of engineering and the relentless pursuit of innovation that characterizes the field.In conclusion, the hand-started engine serves as a reminder of the ingenuity and resourcefulness of early engineers. While technology has advanced significantly since the days of manual starting mechanisms, the principles behind the hand-started engine remain relevant today. By studying this fascinating piece of engineering history, we can appreciate the evolution of technology and the continuous drive for improvement that defines our modern world.

工程和机械的世界充满了令人着迷的创新，这些创新彻底改变了交通和机械。一个这样的创新是手动启动发动机，这是早期工程的奇迹，在各种车辆和机器的发展中发挥了至关重要的作用。理解手动启动发动机的重要性需要深入研究其历史背景、功能和对现代技术的影响。从历史上看，手动启动发动机出现在19世纪末和20世纪初，当时内燃机仍处于初期阶段。与今天配备电启动器和复杂点火系统的发动机不同，手动启动发动机依赖于一种简单而有效的手动启动机制。这涉及使用手摇曲柄旋转发动机的飞轮，从而产生必要的压缩和点火以启动发动机。虽然这种方法需要体力和一定的技能，但在当时它是一个实用的解决方案，并允许各种类型的机械运行，包括汽车、摩托车和农业设备。手动启动发动机的功能既简单又巧妙。当操作员摇动手柄时，发动机的活塞移动，吸入燃料和空气。随着曲柄的继续转动，发动机达到一个点，火花塞点燃压缩的燃料-空气混合物，导致发动机开始运行。这个过程不仅展示了内燃机的原理，还突显了早期工程师在设计这些系统时为使其尽可能高效而付出的聪明才智。尽管其简单性，手动启动发动机也带来了一些挑战。例如，回火的风险很大，如果操作员不小心，可能会导致受伤。此外，手动启动发动机需要力量和毅力，尤其是在寒冷的气候中，发动机更难启动。这些挑战最终导致了更先进的启动机制的发展，包括电启动器，这已成为现代车辆的标准。手动启动发动机对现代技术的影响不可低估。它为发动机设计和启动机制的演变奠定了基础。今天，虽然我们可能在日常使用中看不到许多手动启动发动机，但它们的遗产在小型发动机中得以延续，这些发动机用于割草机、链锯和其他设备。此外，了解手动启动发动机为我们提供了对工程历史的宝贵见解，以及该领域特有的不懈追求创新的精神。总之，手动启动发动机提醒我们早期工程师的聪明才智和资源fulness。虽然自手动启动机制的时代以来，技术已经显著进步，但手动启动发动机背后的原理在今天仍然相关。通过研究这一迷人的工程历史，我们可以欣赏技术的演变以及定义我们现代世界的持续改进动力。