机械必威体育网址

标题: 车身（多为SUV）后玻璃上的板的作用 [打印本页]

作者: bacon1989 时间: 2013-10-26 21:16
标题: 车身（多为SUV）后玻璃上的板的作用
本帖最后由 bacon1989 于 2013-10-26 21:19 编辑

为什么suv等车型的后玻璃上方加装了一个板呢？？？作用是啥？？？？

file:///D:\Program Files D\QQ\451812074\Image\7C7B98{RM8H~_ZXRNSX5MRX.jpg

作者: bacon1989 时间: 2013-10-26 21:20
扰流减阻？？？美观？？？求大神们解答啊

作者: 2266998 时间: 2013-10-26 21:23
阻力问题，没尾巴的车有后雨刷，就是气流问题，你学一下这个，就知道了，

作者: 白石道人 时间: 2013-10-26 21:27
是扰流板，高速行驶的时候空气在车后方会形成一个涡流，涡流会使车辆后部发飘，造成行驶汽车后轮抓地力不好，suv的车较高，重心也较高，转弯高速行驶会有抓地力不好的现象，加了扰流板会好很多

作者: 风过无痕001 时间: 2013-10-26 21:46
面包车上尾翼是不是也是起这个作用的，我家面包车就有尾翼。

作者: Cavalier_Ricky 时间: 2013-10-26 23:10
对广大中国车主来说，就是装饰，看着这车能跑而已。

即使上高速，中国的那个限速下，这个东东的作用也就是降噪音（后雨刷器吹口哨）。

你兜里有钱愿意交罚款飙车的话随便。。。

一年都不怎么上高速的朋友，就不用对这个东西的安全啊、省油啊的太着迷了。

想省油的话，多练练车，一把倒车入库，就把这个油钱省出来了。

作者: 人工智能哦 时间: 2013-10-27 07:54
支持一下4楼

作者: luzy77 时间: 2013-10-27 10:02
一、上面说的扰流板
二、后备箱车门与车身铰链的外挡板，隐蔽美观作用

作者: diqi 时间: 2013-10-28 08:40
http://baa.bitauto.com/hb/ask-4360903.html
科普，简单易懂

作者: bacon1989 时间: 2013-10-28 17:04
三厢车与两厢车流体力学对比图

作者: tr596 时间: 2013-10-28 22:04
导流作用减少气流的负压与泥水的飞溅…

作者: 留慵 时间: 2013-10-29 13:21

作者: 飞扬Frank 时间: 2013-10-29 16:50
涉及到空气动力学了！

作者: zongw2012 时间: 2013-10-30 18:28
学习了

作者: 李二洋 时间: 2013-10-30 19:36
学习了，感谢楼主

作者: 韩健3927 时间: 2013-11-6 01:16
流体力学中减租作用吧

作者: Nstart2012 时间: 2013-11-6 21:14
有意思！见识

作者: 云往这边飘 时间: 2013-11-6 22:44
学习中……

作者: longliwen212146 时间: 2013-11-8 15:06
扰流板spoiler

作者: bacon1989 时间: 2013-11-8 17:36
这个是外文的解释。
A specially designed rear spoiler could increase the fuel efficiency of minivans and SUVs, according to a new study detailed in Green Car Congress. The study reveals that such a spoiler could both reduce drag and nearly eliminate aerodynamic lift—effectively saving several miles per gallon worth of gas consumption. The researchers used principles of fluid dynamics and ran numerical simulations in order to craft an ideal design for a spoiler specifically designed for bluff-backed vehicles. The study was published in the International Journal of Vehicle Design, and it found "that the aerodynamic drag and lift on a mini-van moving at 108 kph (67 mph) are reduced by 5% and more than 100%, respectively, when the new spoiler is attached to it."

And those numbers, especially the inconsequential-seeming 5 percent of drag relief, can add up to major fuel savings:"65% of the power required for ground vehicles to travel on a highway at 70 miles per hour is being consumed due to aerodynamic drag, the reductions from the spoiler could increase fuel economy by up to several miles per gallon."

It should be emphasized how different this spoiler is from those we're accustomed to seeing on performance cars, and the small ones already installed on some SUVs and minivans—these spoilers may appear a little strange by comparison:

"Conventional spoilers resemble an inverted plane wing and generally work by increasing the downward force on the back of the vehicle as well as improving the flow of air across the bluff rear. The new rear spoiler resembles a wave in profile rather than a wing."

So there you have it: minivans with wave-like spoilers that'll get you extra miles to the gallon—pair that with hybrid technology and it sounds like a better way to take the kids to soccer practice to me.

作者: bacon1989 时间: 2013-11-8 17:39
http://www.treehugger.com/cars/spoiler-alert-minivans-and-suvs-could-become-more-fuel-efficient.html

作者: gaozhiweigreat 时间: 2013-11-13 10:39
受教了

作者: 李灿1991 时间: 2013-11-26 13:48
就是为了避免后玻璃脏的太快，要是没哟后面的扰流板，就会然尘土都贴到玻璃上，它和一般轿车的扰流板不同，那个是为了增加汽车的法向载荷的压力，从而增加附着力（当然向前面朋友提到的，速度不高色时候是没有什么作用的，原理就是流体的问题，个人觉得最形象的解释就是把飞机翅膀反着按，飞机就飞不了，而是被摁到地里去了，跑的越快，摁的越狠）

欢迎光临机械必威体育网址 (//www.szfco.com/)