E46_330i wrote:
其實還要加上一家：Saab
Saab的新xwd其實和sh-awd真的滿像的。
Saab的XWD是Haldex做的...不是Saab自己做的...
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Winston, Lin wrote:
SH-AWD似乎是一套偏重後驅的4驅系統, 應該會有不錯的駕駛感受..(恕刪)
您說的好像不跟 Wiki 寫的不一樣~ !!
請參考 Wiki 的內容 :
Components of the SH-AWD system were developed by BorgWarner. It essentially is a set of clutchpacks in a T shaped differental at the rear of the vehicle. There is no center differential. Rather the vehicle's have transverse mounted engine's with power take off units going to the T shaped rear differential/clutch packs. The three clutch packs can engage for the right rear wheel, the left rear wheel, or near the base of the T. With the Acura RL sedan, the system sends 70% of power to the front wheels and 30% to the rear under normal conditions but these ratios can reverse according if needed. SH-AWD in the Acura RDX and Acura MDX use a default power split of 90% to the front and 10% to the rear.
左右扭力的分配, Quattro 是利用 ASR 電子式控制............消耗煞車來令
BorgWarner 的 SH-AWD 前後扭力是採用離合器片, 左右不知是採用何種技術.
如果左右也是採用離合器片, 汽車開了三五年後就有好戲可看了!
以前改過限滑差速器的那些人心裡應該有底........ccc
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autothenia wrote:
左右扭力的分配, Quattro 是利用 ASR 電子式控制............消耗煞車來令
BorgWarner 的 SH-AWD 前後扭力是採用離合器片, 左右不知是採用何種技術.
如果左右也是採用離合器片, 汽車開了三五年後就有好戲可看了!
以前改過限滑差速器的那些人心裡應該有底........ccc...(恕刪)
關於這個，honda的說法是：
The clutch packs and friction material are specially designed for the small amount of continuous slip between front and rear axles (created by the 1.7-percent speed differential), while ensuring the expected level of Acura durability. An oil-temperature sensor allows the ECU to estimate the clutch plate coefficient of friction (which changes with heat) in each clutch pack and then adjusts the current sent to the electromagnetic coil that controls the compensation of each clutch. To ensure that the amount of torque transmitted remains optimized as miles accumulate a coil provides a feedback loop that the ECU uses to adjust current to the electromagnetic clutches to compensate for clutch wear.
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Audi S4 Quattro vs. Subaru STi DCCD vs. Mitsubishi EVO ACD
http://www.youtube.com/watch?v=c3ykTW4F9Z8
