Model 3 Performance簡單試駕心得 - 汽車
By Olga
at 2020-05-21T17:49
at 2020-05-21T17:49
Table of Contents
幫補充一下
車輛跟操控有關的幾項ISO標準規範
1. ISO 3888
Passenger cars — Test track for a severe lane-change manoeuvre
Part 1: Double lane-change (ISO 3888-1)
https://i.imgur.com/kha23la.jpg
https://i.imgur.com/HG5ctwV.jpg
Part 2: Obstacle avoidance (ISO 3888-2)
https://i.imgur.com/dHTVw6z.jpg
3888-1是二次變換車道
3888-2會時速較低但更嚴苛的二次換道(閃避障礙物),也就是常聽到的的麋鹿測試
2. ISO 4138
Passenger cars — Steady-state circular driving behaviour
https://i.imgur.com/i2QbidZ.jpg
這項車輛穩態繞圓(轉向)測試能測出車輛極限的轉彎能力(側向最大G值)
類似的標準有GB/T 6323.6-94 (汽車操縱穩定性試驗方法穩態迴轉試驗)
有分三種量測方法
(1) 等半徑,改變車速
(2) 等方向盤轉角,改變車速
(3) 等車速,改變方向盤轉角
https://i.imgur.com/OtKQIGq.jpg
3. ISO 7401
Road vehicles — Lateral transient response test methods
車輛側向暫態的響應
依照輸入的條件又分4種
(1) Step input
https://i.imgur.com/cI12NYY.jpg
(2) Pulse input
https://i.imgur.com/Sb5LwYg.jpg
(3) Sinusoidal input, one period (ISO/TR 8725)
Road vehicles — Transient open-loop response test method with one period
of sinusoidal input
(4) Random input (ISO/TR 8726)
Road vehicles — Transient open-loop response test method with pseudo-random
steering input
https://i.imgur.com/wGd9c0U.jpg
4. ISO 13674
Road vehicles — Test method for the quantification of on-centre handling
Part 1: Weave test (ISO 13674-1)
Part 2: Transition test (ISO 13674-2)
5. ISO 17288
Passenger cars — Free-steer behaviour
Part 1: Steering-release open-loop test method (ISO 17288-1)
Part 2: Steering-pulse open-loop test method (ISO 17288-2)
4跟5比較偏方向盤手感與保持置中的測試
另外還有幾向常見的動態測試
6. GB/T6323.1或CNS 9244 D3131
全名為Pylon Course Slalom Test,常聽到的繞錐測試
測試車輛靈活與轉向精確的指標
7. J-Turn
https://i.imgur.com/GMQFHX5.jpg
8. Fishhook
https://i.imgur.com/Gsm5NpO.jpg
(1) Fixed Timing Fishhook
https://i.imgur.com/Qw8dWGA.jpg
(2)Roll Rate Feedback Fishhook
https://i.imgur.com/dOqvhLU.jpg
第7項J-Turn和第8項Fishhook是之前在NHTSA的文獻中看到
主要用來測試休旅車在激烈轉向下之側傾,以及是否會翻覆
以上提到的這八項測試裡面
只有第1項(ISO 3888)和第6項(slalom test)是closed-loop試驗
車輛input會隨時修正,好讓車輛維持在目標路徑
其餘項測試都是open-loop試驗
有既定的input(方向盤轉角、車速條件)
其中又以繞圓(ISO 4138)和繞錐(slalom)最常被拿來當作性能車的操控指標
當然這兩項測試會除了底盤條件外,車輛配胎也有極大比重的影響
Tesla Model 3 Performance
https://fastestlaps.com/models/tesla-model-3-performance
18m繞錐: 66.8 kph
最大側向G值:0.95 G
Tesla Model S P100D
https://fastestlaps.com/models/tesla-tesla-model-s-p100d-ludicrous
18m繞錐: 64.2 kph
最大側向G值:0.89 G
Taycan Turbo S
https://fastestlaps.com/models/porsche-taycan-turbo-s
18m繞錐: 67.2 kph
最大側向G值:0.99 G
Toyota Supra
https://fastestlaps.com/models/toyota-supra-a90
18m繞錐: 70.4 kph
最大側向G值:1.07 G
相較一般性能車最大側向G值能超過1G,繞錐時速約70kph左右
電動車因為車重劣勢,過彎性能自然有一段落差
※ 引述《lancelot123 (lancer)》之銘言:
: 原文後面都在戰Tesla和BMW過彎了
: 要客觀比就是拿數據出來
: 真的不用爭成這樣
: BMW G20 M340i 最大橫向G力 0.96g
: BMW F80 M3 最大橫向G力 0.98g
: Tesla Model 3 Long Range AWD 0.90g
: Tesla Model 3 Performance 0.95g
: Civic type R 最大橫向g力 1.02g
: 誰過彎猛,已不言而諭
: -----
: Sent from JPTT on my iPhone
--
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