為什麼四門轎車都不做後面雨刷 - 轎車
By Ursula
at 2018-01-08T02:30
at 2018-01-08T02:30
Table of Contents
這之前好像討論過了? 不過趁機再寫詳細點
以車商的立場
雨刷是能不裝就不裝,不裝可以省成本、省重量、省開關控制器線路馬達、提高妥善率
所以裝雨刷是被迫的
要問的問題是為什麼5門大多數都被迫要做後雨刷?是要解決什麼問題?
直接的問題是5門車款的後擋風玻璃太容易被泥水噴髒
必須裝雨刷來解決
後擋風玻璃不是說下雨就會髒,這牽涉到泥土沉積的機制
可以看以下影片模擬車輛的泥水沉積:
https://www.youtube.com/watch?v=o1Dg8juCYfo
車輛行進時,由於壓差會產生尾流區(wake region, 若有更好譯法請告知)
尾流區的空氣會被捲起迴流,表面流速慢,泥水會在這個區域內沉積
尾流區不只發生在車尾,還會發生在輪子和後照鏡後方
尾流不只會捲空氣,還會包含雨水、泥水、雪水、塵土等等
基本上有什麼捲什麼
如果只有捲到雨水,那就不太會髒,例如後照鏡的尾流區沒什麼髒汙問題
但如果捲到塵土、雪水或泥水就會很髒,例如輪子的尾流區就會充滿髒汙
前輪尾流區造成輪拱和前後車門髒汙
後輪尾流區造成後葉子板和車輛後部髒汙
現在來講4門和5門的區別(可以配下圖)
http://www.exa.com/en/industry/automotive
5門車因為造型因素,整個車子後方是一個大的尾流區
http://www.exa.com/sites/default/files/media-module/e39touring.gif
他勢必會跟後輪的尾流區合流
後輪捲起的泥水塵土很容易被捲上後檔玻璃造成髒汙
逼不得已只好裝雨刷來清潔
四門車因為造型關係,有可能後擋和後車廂有兩個分開的尾流區
http://www.exa.com/sites/default/files/media-module/e39limousine.gif
後輪尾流區只和後車廂尾流區合流,沒有流到後檔玻璃的尾流區
髒只髒到後車廂,後檔玻璃就沒有泥土問題
如果造型設計得更流線,也有可能後檔完全沒有尾流區,尾流區只產生在後車廂後方
這樣更沒問題,在尾流區以外的車窗受到的風速很大,雨水會直接被吹走
大概是這樣,不過5門4門只是個分類,
空氣動力上沒有說5門一定怎樣怎樣4門一定怎樣怎樣,也有4門尾流很大的
總之,是車商依據測試出來的結果決定能不能不裝雨刷
※ 引述《dog9527 (致命病毒)》之銘言:
: 如題
: 我覺得後面雨刷很方便
: 而且四門做的話也沒衝突
: 每次下雨上面有雨水真的很影響視野
: 晚上加雨天真的視線不佳
: 為什麼四門都不做後雨刷呀?
--
以車商的立場
雨刷是能不裝就不裝,不裝可以省成本、省重量、省開關控制器線路馬達、提高妥善率
所以裝雨刷是被迫的
要問的問題是為什麼5門大多數都被迫要做後雨刷?是要解決什麼問題?
直接的問題是5門車款的後擋風玻璃太容易被泥水噴髒
必須裝雨刷來解決
後擋風玻璃不是說下雨就會髒,這牽涉到泥土沉積的機制
可以看以下影片模擬車輛的泥水沉積:
https://www.youtube.com/watch?v=o1Dg8juCYfo
車輛行進時,由於壓差會產生尾流區(wake region, 若有更好譯法請告知)
尾流區的空氣會被捲起迴流,表面流速慢,泥水會在這個區域內沉積
尾流區不只發生在車尾,還會發生在輪子和後照鏡後方
尾流不只會捲空氣,還會包含雨水、泥水、雪水、塵土等等
基本上有什麼捲什麼
如果只有捲到雨水,那就不太會髒,例如後照鏡的尾流區沒什麼髒汙問題
但如果捲到塵土、雪水或泥水就會很髒,例如輪子的尾流區就會充滿髒汙
前輪尾流區造成輪拱和前後車門髒汙
後輪尾流區造成後葉子板和車輛後部髒汙
現在來講4門和5門的區別(可以配下圖)
http://www.exa.com/en/industry/automotive
5門車因為造型因素,整個車子後方是一個大的尾流區
http://www.exa.com/sites/default/files/media-module/e39touring.gif
他勢必會跟後輪的尾流區合流
後輪捲起的泥水塵土很容易被捲上後檔玻璃造成髒汙
逼不得已只好裝雨刷來清潔
四門車因為造型關係,有可能後擋和後車廂有兩個分開的尾流區
http://www.exa.com/sites/default/files/media-module/e39limousine.gif
後輪尾流區只和後車廂尾流區合流,沒有流到後檔玻璃的尾流區
髒只髒到後車廂,後檔玻璃就沒有泥土問題
如果造型設計得更流線,也有可能後檔完全沒有尾流區,尾流區只產生在後車廂後方
這樣更沒問題,在尾流區以外的車窗受到的風速很大,雨水會直接被吹走
大概是這樣,不過5門4門只是個分類,
空氣動力上沒有說5門一定怎樣怎樣4門一定怎樣怎樣,也有4門尾流很大的
總之,是車商依據測試出來的結果決定能不能不裝雨刷
※ 引述《dog9527 (致命病毒)》之銘言:
: 如題
: 我覺得後面雨刷很方便
: 而且四門做的話也沒衝突
: 每次下雨上面有雨水真的很影響視野
: 晚上加雨天真的視線不佳
: 為什麼四門都不做後雨刷呀?
--
Tags:
轎車
All Comments
By Belly
at 2018-01-11T06:05
at 2018-01-11T06:05
By Edward Lewis
at 2018-01-13T04:25
at 2018-01-13T04:25
By Yedda
at 2018-01-17T14:16
at 2018-01-17T14:16
By Connor
at 2018-01-18T19:21
at 2018-01-18T19:21
By Franklin
at 2018-01-20T10:47
at 2018-01-20T10:47
By Madame
at 2018-01-20T20:51
at 2018-01-20T20:51
By Jack
at 2018-01-24T04:37
at 2018-01-24T04:37
By Isabella
at 2018-01-27T03:58
at 2018-01-27T03:58
By John
at 2018-01-28T19:27
at 2018-01-28T19:27
By Carol
at 2018-01-31T18:36
at 2018-01-31T18:36
By Wallis
at 2018-02-01T07:17
at 2018-02-01T07:17
By Freda
at 2018-02-06T07:04
at 2018-02-06T07:04
By Gilbert
at 2018-02-09T03:13
at 2018-02-09T03:13
By Rae
at 2018-02-13T00:47
at 2018-02-13T00:47
By Suhail Hany
at 2018-02-17T18:49
at 2018-02-17T18:49
By Annie
at 2018-02-17T23:33
at 2018-02-17T23:33
By Isabella
at 2018-02-22T23:31
at 2018-02-22T23:31
By Isla
at 2018-02-24T05:31
at 2018-02-24T05:31
By Susan
at 2018-02-28T10:02
at 2018-02-28T10:02
By Irma
at 2018-03-02T05:10
at 2018-03-02T05:10
By Yedda
at 2018-03-06T01:20
at 2018-03-06T01:20
By Sandy
at 2018-03-08T12:44
at 2018-03-08T12:44
By Zenobia
at 2018-03-12T12:42
at 2018-03-12T12:42
By Todd Johnson
at 2018-03-13T03:09
at 2018-03-13T03:09
By Rachel
at 2018-03-16T01:34
at 2018-03-16T01:34
By Lily
at 2018-03-18T10:00
at 2018-03-18T10:00
By Linda
at 2018-03-19T04:38
at 2018-03-19T04:38
By Victoria
at 2018-03-21T06:27
at 2018-03-21T06:27
By Edwina
at 2018-03-22T07:03
at 2018-03-22T07:03
By Noah
at 2018-03-22T09:27
at 2018-03-22T09:27
By Hamiltion
at 2018-03-26T08:11
at 2018-03-26T08:11
By Rosalind
at 2018-03-30T08:00
at 2018-03-30T08:00
By George
at 2018-04-02T00:41
at 2018-04-02T00:41
By Dora
at 2018-04-03T19:59
at 2018-04-03T19:59
By Emma
at 2018-04-04T15:04
at 2018-04-04T15:04
By Ula
at 2018-04-05T20:05
at 2018-04-05T20:05
By Blanche
at 2018-04-06T11:15
at 2018-04-06T11:15
By Emma
at 2018-04-09T12:16
at 2018-04-09T12:16
By Valerie
at 2018-04-13T22:14
at 2018-04-13T22:14
By Jessica
at 2018-04-15T09:58
at 2018-04-15T09:58
By Sierra Rose
at 2018-04-16T13:33
at 2018-04-16T13:33
By Kelly
at 2018-04-18T18:29
at 2018-04-18T18:29
By Quintina
at 2018-04-20T20:35
at 2018-04-20T20:35
By Carol
at 2018-04-22T07:23
at 2018-04-22T07:23
By Iris
at 2018-04-26T06:54
at 2018-04-26T06:54
By Lucy
at 2018-04-29T10:41
at 2018-04-29T10:41
By David
at 2018-05-01T15:18
at 2018-05-01T15:18
By Odelette
at 2018-05-03T00:36
at 2018-05-03T00:36
By Agnes
at 2018-05-05T15:37
at 2018-05-05T15:37
By Anthony
at 2018-05-07T10:51
at 2018-05-07T10:51
By Heather
at 2018-05-08T07:28
at 2018-05-08T07:28
By Kristin
at 2018-05-11T15:45
at 2018-05-11T15:45
By Tristan Cohan
at 2018-05-12T12:20
at 2018-05-12T12:20
By Olive
at 2018-05-13T04:10
at 2018-05-13T04:10
By Elvira
at 2018-05-16T06:17
at 2018-05-16T06:17
By Necoo
at 2018-05-20T12:38
at 2018-05-20T12:38
By Jacob
at 2018-05-24T17:47
at 2018-05-24T17:47
By Frederic
at 2018-05-25T11:38
at 2018-05-25T11:38
By Freda
at 2018-05-26T16:38
at 2018-05-26T16:38
By Hedwig
at 2018-05-30T01:13
at 2018-05-30T01:13
By Madame
at 2018-06-02T06:27
at 2018-06-02T06:27
By Frederic
at 2018-06-06T09:59
at 2018-06-06T09:59
By Christine
at 2018-06-07T13:45
at 2018-06-07T13:45
By Tom
at 2018-06-12T00:14
at 2018-06-12T00:14
By Barb Cronin
at 2018-06-15T18:57
at 2018-06-15T18:57
By Brianna
at 2018-06-19T04:51
at 2018-06-19T04:51
By Wallis
at 2018-06-22T03:16
at 2018-06-22T03:16
By John
at 2018-06-24T19:37
at 2018-06-24T19:37
By Rosalind
at 2018-06-27T17:38
at 2018-06-27T17:38
By Wallis
at 2018-06-30T21:11
at 2018-06-30T21:11
By Audriana
at 2018-07-01T00:50
at 2018-07-01T00:50
By Candice
at 2018-07-04T07:47
at 2018-07-04T07:47
By Thomas
at 2018-07-05T16:06
at 2018-07-05T16:06
By Quanna
at 2018-07-09T04:44
at 2018-07-09T04:44
By Ivy
at 2018-07-10T18:37
at 2018-07-10T18:37
By Kama
at 2018-07-13T06:29
at 2018-07-13T06:29
By Anthony
at 2018-07-16T14:21
at 2018-07-16T14:21
By Adele
at 2018-07-17T09:56
at 2018-07-17T09:56
By Mia
at 2018-07-20T08:42
at 2018-07-20T08:42
By Barb Cronin
at 2018-07-23T01:01
at 2018-07-23T01:01
By Enid
at 2018-07-27T04:26
at 2018-07-27T04:26
By Edith
at 2018-07-27T07:07
at 2018-07-27T07:07
By Delia
at 2018-07-30T06:00
at 2018-07-30T06:00
By Hamiltion
at 2018-08-03T08:53
at 2018-08-03T08:53
By Kumar
at 2018-08-03T13:20
at 2018-08-03T13:20
By Annie
at 2018-08-04T19:07
at 2018-08-04T19:07
By Skylar Davis
at 2018-08-09T13:49
at 2018-08-09T13:49
By Noah
at 2018-08-10T11:50
at 2018-08-10T11:50
By Elma
at 2018-08-14T16:25
at 2018-08-14T16:25
By Belly
at 2018-08-16T00:25
at 2018-08-16T00:25
By Dora
at 2018-08-19T11:12
at 2018-08-19T11:12
By Charlotte
at 2018-08-20T15:10
at 2018-08-20T15:10
By Hedda
at 2018-08-25T00:07
at 2018-08-25T00:07
By Agatha
at 2018-08-25T06:46
at 2018-08-25T06:46
By Kumar
at 2018-08-27T01:06
at 2018-08-27T01:06
By Zanna
at 2018-08-30T12:50
at 2018-08-30T12:50
By Dinah
at 2018-09-02T06:42
at 2018-09-02T06:42
By Daniel
at 2018-09-07T02:41
at 2018-09-07T02:41
By Ida
at 2018-09-09T20:34
at 2018-09-09T20:34
By Susan
at 2018-09-10T16:10
at 2018-09-10T16:10
By Sarah
at 2018-09-15T14:37
at 2018-09-15T14:37
By Necoo
at 2018-09-20T07:10
at 2018-09-20T07:10
By Gilbert
at 2018-09-22T05:47
at 2018-09-22T05:47
By Rebecca
at 2018-09-25T06:21
at 2018-09-25T06:21
By Anthony
at 2018-09-29T14:43
at 2018-09-29T14:43
By Yuri
at 2018-09-30T11:30
at 2018-09-30T11:30
By Lauren
at 2018-10-02T15:14
at 2018-10-02T15:14
By Connor
at 2018-10-06T13:02
at 2018-10-06T13:02
By Blanche
at 2018-10-10T17:54
at 2018-10-10T17:54
By Adele
at 2018-10-14T19:53
at 2018-10-14T19:53
By Agnes
at 2018-10-15T06:29
at 2018-10-15T06:29
By Una
at 2018-10-17T22:01
at 2018-10-17T22:01
By Jake
at 2018-10-18T06:01
at 2018-10-18T06:01
By Faithe
at 2018-10-22T06:27
at 2018-10-22T06:27
By Adele
at 2018-10-25T18:16
at 2018-10-25T18:16
By Caroline
at 2018-10-28T01:41
at 2018-10-28T01:41
By Hedy
at 2018-10-28T03:13
at 2018-10-28T03:13
By John
at 2018-10-28T22:03
at 2018-10-28T22:03
By Kelly
at 2018-10-31T17:24
at 2018-10-31T17:24
By Leila
at 2018-11-04T11:03
at 2018-11-04T11:03
By Irma
at 2018-11-05T06:23
at 2018-11-05T06:23
By Quintina
at 2018-11-08T09:07
at 2018-11-08T09:07
By Eartha
at 2018-11-12T05:07
at 2018-11-12T05:07
By Agatha
at 2018-11-13T03:14
at 2018-11-13T03:14
By Charlie
at 2018-11-14T10:41
at 2018-11-14T10:41
By Emily
at 2018-11-17T06:25
at 2018-11-17T06:25
By Poppy
at 2018-11-18T22:46
at 2018-11-18T22:46
By Yuri
at 2018-11-20T03:47
at 2018-11-20T03:47
By Ula
at 2018-11-22T14:03
at 2018-11-22T14:03
By Thomas
at 2018-11-24T20:10
at 2018-11-24T20:10
By Isabella
at 2018-11-29T03:49
at 2018-11-29T03:49
By Jessica
at 2018-11-30T14:39
at 2018-11-30T14:39
By Valerie
at 2018-12-02T17:26
at 2018-12-02T17:26
By Ophelia
at 2018-12-04T07:11
at 2018-12-04T07:11
By Robert
at 2018-12-08T09:38
at 2018-12-08T09:38
By Ethan
at 2018-12-10T15:46
at 2018-12-10T15:46
By Franklin
at 2018-12-14T06:50
at 2018-12-14T06:50
By Belly
at 2018-12-15T14:40
at 2018-12-15T14:40
By Candice
at 2018-12-19T11:31
at 2018-12-19T11:31
By Thomas
at 2018-12-20T15:43
at 2018-12-20T15:43
By Puput
at 2018-12-21T22:40
at 2018-12-21T22:40
By Yedda
at 2018-12-24T11:42
at 2018-12-24T11:42
By Jacob
at 2018-12-29T02:01
at 2018-12-29T02:01
By Caroline
at 2019-01-02T11:22
at 2019-01-02T11:22
By Olga
at 2019-01-04T09:53
at 2019-01-04T09:53
By Michael
at 2019-01-06T09:28
at 2019-01-06T09:28
By Mary
at 2019-01-10T08:43
at 2019-01-10T08:43
By Linda
at 2019-01-14T21:15
at 2019-01-14T21:15
By Andy
at 2019-01-16T00:02
at 2019-01-16T00:02
By Ivy
at 2019-01-19T08:00
at 2019-01-19T08:00
By Elvira
at 2019-01-23T21:33
at 2019-01-23T21:33
By Hazel
at 2019-01-24T06:25
at 2019-01-24T06:25
By Bennie
at 2019-01-27T10:24
at 2019-01-27T10:24
By Emma
at 2019-01-28T23:03
at 2019-01-28T23:03
By Noah
at 2019-02-02T16:41
at 2019-02-02T16:41
By Anthony
at 2019-02-06T15:03
at 2019-02-06T15:03
By Joseph
at 2019-02-09T17:08
at 2019-02-09T17:08
By Heather
at 2019-02-10T19:03
at 2019-02-10T19:03
By Elma
at 2019-02-10T23:32
at 2019-02-10T23:32
By Ina
at 2019-02-12T20:51
at 2019-02-12T20:51
By Gilbert
at 2019-02-16T12:20
at 2019-02-16T12:20
By Ivy
at 2019-02-17T08:58
at 2019-02-17T08:58
By Dorothy
at 2019-02-20T15:47
at 2019-02-20T15:47
By David
at 2019-02-22T01:45
at 2019-02-22T01:45
By Hedy
at 2019-02-24T12:39
at 2019-02-24T12:39
By Joseph
at 2019-02-26T13:08
at 2019-02-26T13:08
By Dinah
at 2019-03-01T15:54
at 2019-03-01T15:54
By Lucy
at 2019-03-04T07:40
at 2019-03-04T07:40
By Tracy
at 2019-03-08T11:44
at 2019-03-08T11:44
By Edith
at 2019-03-11T14:12
at 2019-03-11T14:12
By Rosalind
at 2019-03-14T20:44
at 2019-03-14T20:44
By Zora
at 2019-03-17T06:55
at 2019-03-17T06:55
By Doris
at 2019-03-21T01:34
at 2019-03-21T01:34
By Todd Johnson
at 2019-03-21T12:18
at 2019-03-21T12:18
By Madame
at 2019-03-24T23:25
at 2019-03-24T23:25
By Olivia
at 2019-03-26T06:01
at 2019-03-26T06:01
By Agatha
at 2019-03-27T02:39
at 2019-03-27T02:39
By Wallis
at 2019-03-30T12:22
at 2019-03-30T12:22
By Sarah
at 2019-03-31T20:45
at 2019-03-31T20:45
By Ingrid
at 2019-04-04T12:42
at 2019-04-04T12:42
By Agatha
at 2019-04-07T07:31
at 2019-04-07T07:31
By Selena
at 2019-04-10T18:17
at 2019-04-10T18:17
By Liam
at 2019-04-13T15:28
at 2019-04-13T15:28
By Barb Cronin
at 2019-04-15T14:19
at 2019-04-15T14:19
By Eartha
at 2019-04-19T23:44
at 2019-04-19T23:44
By Charlie
at 2019-04-24T14:28
at 2019-04-24T14:28
By Wallis
at 2019-04-27T11:25
at 2019-04-27T11:25
By Blanche
at 2019-04-30T23:52
at 2019-04-30T23:52
By Hedda
at 2019-05-02T08:08
at 2019-05-02T08:08
By Necoo
at 2019-05-04T18:45
at 2019-05-04T18:45
By Necoo
at 2019-05-05T21:17
at 2019-05-05T21:17
By James
at 2019-05-09T21:57
at 2019-05-09T21:57
By Liam
at 2019-05-11T02:51
at 2019-05-11T02:51
By Adele
at 2019-05-14T04:31
at 2019-05-14T04:31
By Brianna
at 2019-05-16T12:00
at 2019-05-16T12:00
By Quintina
at 2019-05-20T14:20
at 2019-05-20T14:20
By Kelly
at 2019-05-21T05:43
at 2019-05-21T05:43
By Candice
at 2019-05-25T17:15
at 2019-05-25T17:15
By Poppy
at 2019-05-27T11:25
at 2019-05-27T11:25
By Candice
at 2019-05-29T14:09
at 2019-05-29T14:09
By Hazel
at 2019-06-03T03:14
at 2019-06-03T03:14
By Daniel
at 2019-06-04T22:26
at 2019-06-04T22:26
By Edward Lewis
at 2019-06-07T10:23
at 2019-06-07T10:23
By Gary
at 2019-06-12T03:11
at 2019-06-12T03:11
By Jacob
at 2019-06-14T09:56
at 2019-06-14T09:56
By Zanna
at 2019-06-16T17:37
at 2019-06-16T17:37
By Olive
at 2019-06-16T19:30
at 2019-06-16T19:30
By Eartha
at 2019-06-19T19:41
at 2019-06-19T19:41
By Ophelia
at 2019-06-20T19:19
at 2019-06-20T19:19
By Mary
at 2019-06-21T11:43
at 2019-06-21T11:43
Related Posts
為什麼四門轎車都不做後面雨刷
By Oscar
at 2018-01-08T00:11
at 2018-01-08T00:11
sienta嗎?70萬的選擇
By John
at 2018-01-05T21:32
at 2018-01-05T21:32
國產車大降價 破格搶客
By Lucy
at 2018-01-05T20:57
at 2018-01-05T20:57
開國道通勤的車輛配備
By Rosalind
at 2018-01-05T10:44
at 2018-01-05T10:44
強!暴衝直接翻過一輛車 「飛行汽車」
By Quanna
at 2018-01-04T20:05
at 2018-01-04T20:05