Toyota表示:慢點推柴油油電,對EV持懷疑 - 特斯拉

By Daniel
at 2017-06-29T14:01
at 2017-06-29T14:01
Table of Contents
※ 引述《MunezSu (Munez)》之銘言:
: 所以電動車真的構造簡單,人人可做?
: 那怎麼特斯拉的規格卻在一般有做電動車的車廠不常見?
: 還有電動車沒有差速器?所以4顆輪子是獨立的?
: 一輪一顆發動機這樣嗎?那真的滿厲害的,這樣構造不算複雜?
: 再來我真的很有興趣,電動車只要改程式就可以改變扭力輸出,我一直以爲馬達在同轉數同功率輸入下扭力跟輸出功率是定值。想了解改什麼程式碼能改變扭力。如果是加大功率輸入那沒有極限嗎?
我講的是電動車"硬體"構造簡單
你要複製硬體不難,但是要能跑出像Model S那樣的速度需要軟體配合
但Tesla(還有其它很強的電動車廠)利害的地方是在於電池管理技術跟軟體
要解釋為什麼軟體對電動車很重要首先要了解燃油車是怎麼運作的
講一個例子
我們都學過最大靜摩擦力大於動摩擦力,所以當你輪上扭矩過大的時候輪子就會開始打滑
所以要防止打滑狀況發生就要適時適量降低扭矩
要降低扭矩可以透過變速箱或是限滑差速器,透過裡面齒輪機構作用去達到其限滑的目的
或者更直接的透過降低引擎出力去降低輪上扭矩
但是以燃油車的狀況,你要改變引擎出力還要經過進氣、壓縮、燃燒、排氣....
一連串很多機械上的動作才能改變引擎出力
當你車子偵測到需要降低扭矩時,再經過這一連串動作花的時間可能好幾百毫秒過去了
燃油車透過軟體去控制引擎出力改變輪上扭矩效用就變得不大
因為這一連串動作花的時間太多
你想降低這種狀況發生時的影響你就需要更好的差速器更好的變速箱
好的差速器可以更有效防止扭矩被傳送到不正確的輪胎上
好的變速箱可以讓你動力傳遞更直接更快
但是電動車就不一樣了
電動車可以直接用軟體控制電流大小去改變馬達轉速
改變輪上扭矩都是幾個毫秒內就能做到
改進一下軟體,就能夠影響到車子的性能
有些燃油車扭力馬力都比電動車大,但是起步跑不過電動車就是這原因
因為他不能在極短時間內改變輪上扭矩
另外Model S四驅版是前後有馬達,所以它是前後軸獨立
Rimac Concept One這種電動超跑就塞了四具馬達,所以它是四個輪子都獨立
利用軟體去控制他的四個輪子扭矩大小
理想狀態下當然是一個輪子一個馬達最好,這樣連差速器都不需要了
但非超跑的市售車也要考慮一下成本問題
--
: 所以電動車真的構造簡單,人人可做?
: 那怎麼特斯拉的規格卻在一般有做電動車的車廠不常見?
: 還有電動車沒有差速器?所以4顆輪子是獨立的?
: 一輪一顆發動機這樣嗎?那真的滿厲害的,這樣構造不算複雜?
: 再來我真的很有興趣,電動車只要改程式就可以改變扭力輸出,我一直以爲馬達在同轉數同功率輸入下扭力跟輸出功率是定值。想了解改什麼程式碼能改變扭力。如果是加大功率輸入那沒有極限嗎?
我講的是電動車"硬體"構造簡單
你要複製硬體不難,但是要能跑出像Model S那樣的速度需要軟體配合
但Tesla(還有其它很強的電動車廠)利害的地方是在於電池管理技術跟軟體
要解釋為什麼軟體對電動車很重要首先要了解燃油車是怎麼運作的
講一個例子
我們都學過最大靜摩擦力大於動摩擦力,所以當你輪上扭矩過大的時候輪子就會開始打滑
所以要防止打滑狀況發生就要適時適量降低扭矩
要降低扭矩可以透過變速箱或是限滑差速器,透過裡面齒輪機構作用去達到其限滑的目的
或者更直接的透過降低引擎出力去降低輪上扭矩
但是以燃油車的狀況,你要改變引擎出力還要經過進氣、壓縮、燃燒、排氣....
一連串很多機械上的動作才能改變引擎出力
當你車子偵測到需要降低扭矩時,再經過這一連串動作花的時間可能好幾百毫秒過去了
燃油車透過軟體去控制引擎出力改變輪上扭矩效用就變得不大
因為這一連串動作花的時間太多
你想降低這種狀況發生時的影響你就需要更好的差速器更好的變速箱
好的差速器可以更有效防止扭矩被傳送到不正確的輪胎上
好的變速箱可以讓你動力傳遞更直接更快
但是電動車就不一樣了
電動車可以直接用軟體控制電流大小去改變馬達轉速
改變輪上扭矩都是幾個毫秒內就能做到
改進一下軟體,就能夠影響到車子的性能
有些燃油車扭力馬力都比電動車大,但是起步跑不過電動車就是這原因
因為他不能在極短時間內改變輪上扭矩
另外Model S四驅版是前後有馬達,所以它是前後軸獨立
Rimac Concept One這種電動超跑就塞了四具馬達,所以它是四個輪子都獨立
利用軟體去控制他的四個輪子扭矩大小
理想狀態下當然是一個輪子一個馬達最好,這樣連差速器都不需要了
但非超跑的市售車也要考慮一下成本問題
--
All Comments

By Daph Bay
at 2017-06-30T13:56
at 2017-06-30T13:56

By Hedda
at 2017-07-03T06:50
at 2017-07-03T06:50

By Heather
at 2017-07-06T11:56
at 2017-07-06T11:56

By Ula
at 2017-07-11T03:46
at 2017-07-11T03:46

By Rebecca
at 2017-07-12T06:54
at 2017-07-12T06:54

By Heather
at 2017-07-16T06:10
at 2017-07-16T06:10

By Tracy
at 2017-07-21T05:06
at 2017-07-21T05:06

By Caitlin
at 2017-07-22T18:22
at 2017-07-22T18:22

By Edith
at 2017-07-23T02:51
at 2017-07-23T02:51

By Delia
at 2017-07-24T09:54
at 2017-07-24T09:54

By Mia
at 2017-07-25T17:55
at 2017-07-25T17:55

By Jacky
at 2017-07-30T05:09
at 2017-07-30T05:09

By Delia
at 2017-07-30T18:59
at 2017-07-30T18:59

By Eden
at 2017-08-04T14:25
at 2017-08-04T14:25

By Ethan
at 2017-08-05T19:09
at 2017-08-05T19:09

By Zenobia
at 2017-08-08T01:02
at 2017-08-08T01:02

By Queena
at 2017-08-12T03:57
at 2017-08-12T03:57

By Megan
at 2017-08-16T20:49
at 2017-08-16T20:49

By Olivia
at 2017-08-20T03:30
at 2017-08-20T03:30

By Eartha
at 2017-08-20T23:28
at 2017-08-20T23:28

By Leila
at 2017-08-23T17:45
at 2017-08-23T17:45

By Rosalind
at 2017-08-24T01:51
at 2017-08-24T01:51

By Bethany
at 2017-08-28T06:20
at 2017-08-28T06:20

By Eartha
at 2017-08-29T09:23
at 2017-08-29T09:23

By Carolina Franco
at 2017-08-30T01:29
at 2017-08-30T01:29

By Hamiltion
at 2017-09-02T18:24
at 2017-09-02T18:24

By Agatha
at 2017-09-06T13:15
at 2017-09-06T13:15

By Edward Lewis
at 2017-09-08T19:38
at 2017-09-08T19:38

By Gilbert
at 2017-09-12T04:30
at 2017-09-12T04:30

By Margaret
at 2017-09-13T21:32
at 2017-09-13T21:32

By Carol
at 2017-09-13T22:41
at 2017-09-13T22:41

By Steve
at 2017-09-16T05:30
at 2017-09-16T05:30

By Susan
at 2017-09-17T11:31
at 2017-09-17T11:31

By Hazel
at 2017-09-19T01:40
at 2017-09-19T01:40

By Rae
at 2017-09-22T07:35
at 2017-09-22T07:35

By Candice
at 2017-09-26T14:56
at 2017-09-26T14:56

By Aaliyah
at 2017-09-29T02:29
at 2017-09-29T02:29

By Audriana
at 2017-10-03T07:35
at 2017-10-03T07:35

By Victoria
at 2017-10-06T08:34
at 2017-10-06T08:34

By Queena
at 2017-10-08T14:45
at 2017-10-08T14:45

By Megan
at 2017-10-13T01:19
at 2017-10-13T01:19

By Jacky
at 2017-10-16T08:08
at 2017-10-16T08:08

By Ethan
at 2017-10-20T09:25
at 2017-10-20T09:25

By Faithe
at 2017-10-22T10:16
at 2017-10-22T10:16

By Cara
at 2017-10-24T20:12
at 2017-10-24T20:12

By Bennie
at 2017-10-29T06:26
at 2017-10-29T06:26

By Bennie
at 2017-10-31T01:37
at 2017-10-31T01:37

By Olive
at 2017-10-31T22:22
at 2017-10-31T22:22

By Frederic
at 2017-11-03T05:05
at 2017-11-03T05:05

By Kelly
at 2017-11-03T12:55
at 2017-11-03T12:55

By Donna
at 2017-11-04T16:59
at 2017-11-04T16:59

By Robert
at 2017-11-08T23:05
at 2017-11-08T23:05

By Edith
at 2017-11-10T15:20
at 2017-11-10T15:20

By Leila
at 2017-11-14T10:39
at 2017-11-14T10:39

By Blanche
at 2017-11-15T19:22
at 2017-11-15T19:22

By Anthony
at 2017-11-16T07:50
at 2017-11-16T07:50

By Franklin
at 2017-11-18T05:45
at 2017-11-18T05:45

By Blanche
at 2017-11-20T14:39
at 2017-11-20T14:39

By Skylar DavisLinda
at 2017-11-21T01:35
at 2017-11-21T01:35

By Skylar DavisLinda
at 2017-11-21T23:21
at 2017-11-21T23:21

By Jessica
at 2017-11-24T04:43
at 2017-11-24T04:43

By Eden
at 2017-11-27T04:59
at 2017-11-27T04:59

By Connor
at 2017-11-27T20:03
at 2017-11-27T20:03

By Delia
at 2017-12-01T23:08
at 2017-12-01T23:08

By Ethan
at 2017-12-04T11:10
at 2017-12-04T11:10

By Connor
at 2017-12-08T16:46
at 2017-12-08T16:46

By Megan
at 2017-12-13T07:57
at 2017-12-13T07:57

By Agatha
at 2017-12-15T22:47
at 2017-12-15T22:47

By Delia
at 2017-12-17T23:28
at 2017-12-17T23:28

By Puput
at 2017-12-20T09:09
at 2017-12-20T09:09

By Eden
at 2017-12-23T22:52
at 2017-12-23T22:52

By Hedwig
at 2017-12-27T05:13
at 2017-12-27T05:13

By Ursula
at 2017-12-31T14:31
at 2017-12-31T14:31

By Ethan
at 2018-01-01T09:51
at 2018-01-01T09:51

By Carol
at 2018-01-05T07:29
at 2018-01-05T07:29

By Dinah
at 2018-01-07T08:55
at 2018-01-07T08:55

By Donna
at 2018-01-11T00:17
at 2018-01-11T00:17

By Olga
at 2018-01-12T10:33
at 2018-01-12T10:33

By Emma
at 2018-01-13T06:50
at 2018-01-13T06:50

By Catherine
at 2018-01-15T01:50
at 2018-01-15T01:50

By Isla
at 2018-01-19T00:14
at 2018-01-19T00:14

By Harry
at 2018-01-23T07:26
at 2018-01-23T07:26

By Liam
at 2018-01-25T03:08
at 2018-01-25T03:08

By Enid
at 2018-01-25T10:29
at 2018-01-25T10:29

By Andrew
at 2018-01-25T15:30
at 2018-01-25T15:30

By Rae
at 2018-01-28T14:37
at 2018-01-28T14:37

By Aaliyah
at 2018-01-31T04:20
at 2018-01-31T04:20

By Margaret
at 2018-02-05T01:27
at 2018-02-05T01:27

By Yedda
at 2018-02-09T15:45
at 2018-02-09T15:45

By Margaret
at 2018-02-11T01:48
at 2018-02-11T01:48

By Candice
at 2018-02-14T12:42
at 2018-02-14T12:42

By Edith
at 2018-02-17T11:08
at 2018-02-17T11:08

By Oliver
at 2018-02-20T23:44
at 2018-02-20T23:44
Related Posts
Toyota表示:慢點推柴油油電,對EV持懷疑

By Jessica
at 2017-06-29T12:27
at 2017-06-29T12:27
160萬左右正七人座選擇

By Mason
at 2017-06-29T12:04
at 2017-06-29T12:04
Toyota表示:慢點推柴油油電,對EV持懷疑

By Erin
at 2017-06-29T10:07
at 2017-06-29T10:07
Toyota表示:慢點推柴油油電,對EV持懷疑

By Quanna
at 2017-06-29T08:15
at 2017-06-29T08:15
Toyota表示:慢點推柴油油電,對EV持懷疑

By Gary
at 2017-06-29T02:15
at 2017-06-29T02:15