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四冲程循环

File:4StrokeEngine_Ortho_3D_Small.gif · Wikimedia Commons · See Wikimedia Commons

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四冲程循环

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Also known as four-stroke cycle, four-stroke cycle engine

internal combustion engine type

AI overview

A four-stroke engine is a type of internal combustion engine that completes its power cycle in four separate strokes of the piston, making it one of the most common designs used in cars, motorcycles, and other vehicles. It matters because this design is fuel-efficient and produces relatively low emissions compared to other engine types, which is why it has become the standard for most modern transportation.

AI-generated from the Wikipedia summary — may contain errors.

Wikidata facts

Instance of
technical system
Image
4StrokeEngine Ortho 3D Small.gif
Show 2 more facts
Commons category
Four-stroke engines
time of discovery or invention
1876-00-00
Sources (3)

via Wikidata · CC0

Article · 中文

四行程循環(Four-stroke cycle),现在汽车以及工业用途的(汽车、卡车、发电机)内燃机中大多都是四冲程循环的。此技術由德國科學家尼古拉斯·奥托(Nicolaus Otto)于1876年发明,所以又叫奥托循环(Otto cycle)。轉子引擎有四个类似的周期,不过没有用到冲程。一个周期由四个冲程构成,亦即四個活塞在气缸中单方向的直线运动: 1. * 进气(吸气)冲程:活塞落下,將汽油和空氣的混合物体,通过一个或者多个汽門注入汽缸。 2. * 压缩冲程:升起的活塞將燃料和空氣的混合物壓縮。(活塞的机械能转化为混合物的内能) 3. * 動力(点火)(做功)冲程:接近压缩冲程顶点时的燃料和空氣之混合物體被火星塞點燃,將活塞推下。(混合物的内能转化为活塞的机械能) 4. * 排气冲程:活塞升起,將燃烧过的废气通过一个或者多个汽門排出气缸。 四冲程发动机比两冲程的效率要高很多。不过需要相当多的可移动零件以及更高的制造技术。

Abstract from DBpedia / Wikipedia · CC BY-SA

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