• 高成熟度：

7DCT300 launched from 2015, until now, volume in market more than 1 million.自2015年量產(chǎn)以來， 7DCT300市場保有量已達百萬級。

7DCT300 applied on lots of vehicle model. Such as premium brand BMW, Daimler.7DCT300在國內(nèi)外匹配眾多車型，并有奔馳、寶馬等高端品牌。

• 高性能

7DCT300 has good performance for drivability, NVH and reliability.7DCT300在駕駛性能、NVH和可靠性方面都有著較佳的表現(xiàn)。

• 高效

Good fuel consumption 低油耗

High Efficiency(Comprehensive efficiency up to 97%) 極高的傳遞效率（綜合效率高達97%）

• 高能量密度比
  

Best Power-Density 同級別最佳重量扭矩比

• 高質(zhì)量

1. Max. input torque 300 Nm 最大輸入扭矩300Nm

2. Dry weight 67 kg (w/o DMF) 凈重67千克（不含雙質(zhì)量飛輪）

3. Wet nested dual clutch 濕式嵌套雙離合器

4. 7-speed + R with a gear ratio span of >8.5 possible 7個前進檔和1個倒檔，速比范圍有可能大于8.5

5. Mechanical or Electric park lock 可選機械或電子駐車機構(gòu)

6. Electro mechanical gear actuation 電子機械式換檔執(zhí)行系統(tǒng)

7. Electro hydraulic clutch actuation 電子液壓離合器執(zhí)行系統(tǒng)

8. Electrical on-demand cooling 適時電子冷卻系統(tǒng)

1. Stand-alone TCU mounted to transmission housing TCU安裝于變速器殼體上

2. External wiring harness mounted on transmission 線束安裝在變速器外部

3. 5 power stages for BLDC motors (shift/clutch/cooling) 5個功率驅(qū)動的無刷直流電機（換檔/離合器/冷卻）

4. 2 pressure sensors 2個壓力傳感器

5. 1 oil temperature sensor 1 個油溫傳感器

6. 2 speed sensor (1 with direction) 2個速度傳感器（其中一個包含方向）

7. Transmission range sensor(no need for PBW) 變速箱檔位位置傳感器(電子駐車不需要)

Electric Power Consumption in NEDC: 在NEDC工況下的能耗

• shift actuation is 1-2 W 換擋驅(qū)動能耗1-2 W

• clutch actuation is 10-15 W (depending on combustion engine torque) 離合器驅(qū)動能耗10-15 W （取決

• 于發(fā)動機扭矩）

• clutch cooling is 3-4 W 離合器冷能耗是3-4 W

• base TCU is 10 W 基礎TCU能耗是10W

• total is 24-31 W 總能耗是24-31 W

? Maximum engine speed 7500 rpm 最大引擎轉(zhuǎn)速達7500rpm

? Friction surfaces C1=6 / C2=8 摩擦表面C1=6 / C2=8

? Torque capacity 300 Nm ~10bar 扭矩容量300 Nm ~10bar

? Similar clutch gain of 34 Nm/bar for both clutches 兩個離合器的傳遞扭矩/壓力比類似，即34 Nm/bar

? Stroke point of 1,5 bar 半接合點壓力1.5 bar

? Weight 7,0 kg(with clutch support) 重7.0千克（含離合器支撐）

液壓原理圖

? Additional cooling system to increase thermal capacity 額外的冷卻系統(tǒng)以提高熱容量

? The integrated cooler is a water to housing cooler 集成冷卻器原理是通過水流過殼體來制冷

? Engine cooling fluid is used within clutch housing 使用發(fā)動機冷卻液來冷卻

? Cooling power of ~150 W / K 冷卻能力達到150 W / K

六、齒輪組

? Center distance中心距: 5 4 R

- 188 mm

- 197 mm (better for 4WD更好匹配四驅(qū))

? Gear ratio span of > 8.5 possible 齒輪速比范圍有可能大于8.5

- Shortest 1st gear: 18.5

最大一檔速比：18.5

- Longest 7th gear: 1.87

最小七檔速比: 1.87

? Max. output torque 4200 Nm 最大輸出扭矩4200Nm

?Odd and even gears are controlled by two shift drums respectively 奇偶檔位分別由兩個換檔鼓控制

?Two e-motors control two shift drums respectively 兩個電機分別控制兩個換檔鼓

?Double-cone rings for 1st and Rev gear 一檔和倒檔為雙錐

?Single-cone rings for all other gears 其它檔為單錐

?Carbon-lining for all cone rings 所有同步環(huán)為碳襯