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標題: 車身（多為SUV）后玻璃上的板的作用 [打印本頁]

作者: bacon1989 時間: 2013-10-26 21:16
標題: 車身（多為SUV）后玻璃上的板的作用
本帖最后由 bacon1989 于 2013-10-26 21:19 編輯

為什么suv等車型的后玻璃上方加裝了一個板呢？？？作用是啥？？？？

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

作者: bacon1989 時間: 2013-10-26 21:20
擾流減阻？？？美觀？？？求大神們解答啊

作者: 2266998 時間: 2013-10-26 21:23
阻力問題，沒尾巴的車有后雨刷，就是氣流問題，你學一下這個，就知道了，

作者: 白石道人 時間: 2013-10-26 21:27
是擾流板，高速行駛的時候空氣在車后方會形成一個渦流，渦流會使車輛后部發飄，造成行駛汽車后輪抓地力不好，suv的車較高，重心也較高，轉彎高速行駛會有抓地力不好的現象，加了擾流板會好很多

作者: 風過無痕001 時間: 2013-10-26 21:46
面包車上尾翼是不是也是起這個作用的，我家面包車就有尾翼。

作者: Cavalier_Ricky 時間: 2013-10-26 23:10
對廣大中國車主來說，就是裝飾，看著這車能跑而已。

即使上高速，中國的那個限速下，這個東東的作用也就是降噪音（后雨刷器吹口哨）。

你兜里有錢愿意交罰款飆車的話隨便。。。

一年都不怎么上高速的朋友，就不用對這個東西的安全啊、省油啊的太著迷了。

想省油的話，多練練車，一把倒車入庫，就把這個油錢省出來了。

作者: 人工智能哦 時間: 2013-10-27 07:54
支持一下4樓

作者: luzy77 時間: 2013-10-27 10:02
一、上面說的擾流板
二、后備箱車門與車身鉸鏈的外擋板，隱蔽美觀作用

作者: diqi 時間: 2013-10-28 08:40
http://baa.bitauto.com/hb/ask-4360903.html
科普，簡單易懂

作者: bacon1989 時間: 2013-10-28 17:04
三廂車與兩廂車流體力學對比圖

作者: tr596 時間: 2013-10-28 22:04
導流作用減少氣流的負壓與泥水的飛濺…

作者: 留慵 時間: 2013-10-29 13:21

作者: 飛揚Frank 時間: 2013-10-29 16:50
涉及到空氣動力學了！

作者: zongw2012 時間: 2013-10-30 18:28
學習了

作者: 李二洋 時間: 2013-10-30 19:36
學習了，感謝樓主

作者: 韓健3927 時間: 2013-11-6 01:16
流體力學中減租作用吧

作者: Nstart2012 時間: 2013-11-6 21:14
有意思！見識

作者: 云往這邊飄 時間: 2013-11-6 22:44
學習中……

作者: longliwen212146 時間: 2013-11-8 15:06
擾流板spoiler

作者: bacon1989 時間: 2013-11-8 17:36
這個是外文的解釋。
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 時間: 2013-11-8 17:39
http://www.treehugger.com/cars/spoiler-alert-minivans-and-suvs-could-become-more-fuel-efficient.html

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

作者: 李燦1991 時間: 2013-11-26 13:48
就是為了避免后玻璃臟的太快，要是沒喲后面的擾流板，就會然塵土都貼到玻璃上，它和一般轎車的擾流板不同，那個是為了增加汽車的法向載荷的壓力，從而增加附著力（當然向前面朋友提到的，速度不高色時候是沒有什么作用的，原理就是流體的問題，個人覺得最形象的解釋就是把飛機翅膀反著按，飛機就飛不了，而是被摁到地里去了，跑的越快，摁的越狠）

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