By networking quattro drive with Audi drive select, the driver can adjust the all-wheel-drive properties to suit his or her individual requirements. The auto mode in drive select provides the best possible traction and balanced driving dynamics. In dynamic mode, power is sent to the rear axle sooner and to a larger degree, improving the driving dynamics particularly at low coefficients of friction. Wheel-selective torque control – a software function of the ESC – smooths out the handling as needed by minimally braking the inside wheels.
josephjylee wrote:
下面這段是否表示在Dynamic模式下, 後輪總是會有驅動力. Auto模式就會變成平時前驅, 需要時四驅會啟動.....如果是這樣, 我覺得還可以接受...
國外媒體實際在奧地利的冬天測試結果:
冬季的山路: 51.2% 時間是前輪驅動
結冰高速公路: 90% 時間是前輪驅動
http://www.carmagazine.co.uk/car-news/tech/review-audis-new-for-2016-quattro-with-ultra-all-wheel-drive-system/
素八滷
福斯的車價
水貨車的保固
賓士的零件價格
法拉利的待料時間
Songgyy wrote:
原本的torsen quattro,前軸就已經和變速箱連一起啊
沒道理torsen quattro可以做到平時40:60,新的ultra就不行
torsen的中央差速器是恆動的, 平時40:60.
quattro ultra 是Haldex 系統. 中央差速器位於後軸處, 前端有一個多片式離合器, 與傳動軸連接.
平時, 這個離合器處於[離]的狀態, 當有需要後輪傳動時 ,再根據需求, 讓離合器轉為[合], 將需要的動力傳送到後軸.
第五代 Haldex強調是智慧型, 200ms內就可反應.
好處是:1)重量較輕 2)油耗值更佳
如非天天跑賽道或山道 ,個人認為quattro ultra更適合一般車主.
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