two stroke engine

简明释义

二冲程发动机

英英释义

例句

1.The two stroke engine 二冲程发动机 produces more emissions, which is a concern for environmentalists.

二冲程发动机 two stroke engine 会产生更多的排放，这让环保人士感到担忧。

2.The lawnmower uses a two stroke engine 二冲程发动机 for better power output.

这台割草机使用了一个二冲程发动机 two stroke engine以获得更好的功率输出。

3.Mechanics often recommend a two stroke engine 二冲程发动机 for small machines like chainsaws.

机械师通常建议在小型机器如链锯中使用二冲程发动机 two stroke engine。

4.Many dirt bikes are equipped with a two stroke engine 二冲程发动机 because of their lightweight design.

许多越野摩托车配备了一个二冲程发动机 two stroke engine，因为它们的轻量化设计。

5.A two stroke engine 二冲程发动机 is simpler in construction compared to a four-stroke engine.

与四冲程发动机相比，二冲程发动机 two stroke engine 的结构更简单。

作文

The two stroke engine is a type of internal combustion engine that completes a power cycle in just two strokes of the piston, or one crankshaft revolution. This design allows for a more compact and lightweight engine compared to its four-stroke counterpart. The two stroke engine is commonly found in small machinery, such as chainsaws, lawn mowers, and outboard motors, where size and weight are critical factors. One of the main advantages of the two stroke engine is its simplicity; it has fewer moving parts, which can lead to lower manufacturing costs and easier maintenance. However, this simplicity comes at a cost, as two stroke engines tend to be less fuel-efficient and produce more emissions than four-stroke engines.The operation of a two stroke engine involves a unique process that combines the intake and compression strokes into one, and the power and exhaust strokes into another. When the piston moves down, it creates a vacuum that draws in a mixture of air and fuel through an intake port. As the piston rises, it compresses this mixture while simultaneously pushing out the exhaust gases from the previous cycle. When the piston reaches the top of its stroke, the spark plug ignites the compressed fuel-air mixture, causing an explosion that forces the piston back down, thus completing the cycle.Due to their design, two stroke engines often require oil to be mixed with the fuel to lubricate the engine components, which contributes to higher emissions. This is a significant drawback, especially in today’s environmentally-conscious society. Many regions have implemented stricter regulations on emissions, prompting manufacturers to seek alternatives to the two stroke engine. Despite these challenges, the two stroke engine remains popular in certain applications due to its high power-to-weight ratio and ease of use.In recent years, advancements in technology have led to the development of cleaner and more efficient two stroke engines. Manufacturers are now incorporating electronic fuel injection systems and advanced exhaust treatment technologies to reduce emissions and improve fuel efficiency. These innovations aim to make the two stroke engine more competitive against four-stroke engines while maintaining its inherent advantages.In conclusion, the two stroke engine is a fascinating piece of engineering that has stood the test of time. Its simplicity and power make it a preferred choice for many small-engine applications, despite the challenges posed by emissions and fuel efficiency. As technology continues to evolve, we may see a resurgence in the popularity of two stroke engines that meet modern environmental standards while retaining their unique benefits. Understanding the workings and implications of the two stroke engine is crucial for anyone involved in the automotive or mechanical fields, as it highlights the balance between performance and environmental responsibility.

双冲程发动机是一种内燃机，它在仅两个活塞行程或一个曲轴旋转中完成一个动力循环。这种设计使得它相比四冲程发动机更加紧凑和轻便。双冲程发动机通常用于小型机械，如链锯、割草机和舷外发动机，在这些应用中，尺寸和重量是关键因素。双冲程发动机的主要优点之一是其简单性；它的活动部件更少，这可能导致更低的制造成本和更容易的维护。然而，这种简单性也有代价，因为双冲程发动机往往效率较低，并且产生更多的排放。双冲程发动机的工作原理涉及一个独特的过程，它将进气和压缩行程合并为一个，将动力和排气行程合并为另一个。当活塞向下移动时，它会产生真空，从而通过进气口吸入空气和燃料的混合物。随着活塞上升，它压缩这个混合物，同时将前一个循环的废气推出。当活塞达到行程的顶部时，火花塞点燃压缩的燃料-空气混合物，导致爆炸，使活塞向下移动，从而完成循环。由于其设计，双冲程发动机通常需要将油与燃料混合以润滑发动机部件，这增加了排放。这是一个显著的缺点，特别是在当今环保意识日益增强的社会中。许多地区已经实施了更严格的排放规定，促使制造商寻求替代双冲程发动机的方法。尽管面临这些挑战，双冲程发动机在某些应用中仍然受欢迎，因为其高功率重量比和易用性。近年来，技术的进步导致了更清洁、更高效的双冲程发动机的发展。制造商现在正在采用电子燃油喷射系统和先进的排气处理技术，以减少排放并提高燃油效率。这些创新旨在使双冲程发动机在保持其固有优势的同时，与四冲程发动机更具竞争力。总之，双冲程发动机是一项令人着迷的工程作品，经受住了时间的考验。尽管排放和燃油效率带来了挑战，但其简单性和动力使其成为许多小型发动机应用的首选。随着技术的不断发展，我们可能会看到符合现代环境标准的双冲程发动机的复兴，同时保留其独特的优点。理解双冲程发动机的工作原理及其影响对于任何参与汽车或机械领域的人来说都是至关重要的，因为它突显了性能与环境责任之间的平衡。