解析丨麦格纳6DCT260产品
一、6DCT260 – Overview 概述
Downsize develop based on 7DCT300 基于7DCT300的小型化开发
Input torque 260 Nm 输入扭矩260Nm
Dry weight 64 kg (w/o DMF) 净重64千克（不含双质量飞轮）
Wet nested dual clutch 湿式嵌套双离合器
6-speed + R with a max gear ratio span of 6.46个前进档和1个倒档，最大速比范围6.4
Mechanical or Electric park lock 可选机械或电子驻车机构
Electro mechanical gear actuation 电子机械式换档执行系统
Electro hydraulic clutch actuation 电子液压离合器执行系统
Electrical on-demand cooling 适时电子冷却系统
Start/stop functionality and extended sailing functionaltiy (no additional HW needed)支持启停功能及扩展的滑行功能（不需要额外硬件支持）
二、6DCT260组成部件
电子控制部件
Stand-alone TCU mounted to transmission housingTCU安装于变速器壳体上
External wiring harness mounted on transmission线束安装在变速器外部
5 power stages for BLDC motors (shift/clutch/cooling)5个功率驱动的无刷直流电机（换档/离合器执行/离合器冷却）
2 pressure sensors2个压力传感器
1 oil temperature sensor1 个油温传感器
2 speed sensor (1 with direction)2个速度传感器（其中一个包含方向）
Transmission range sensor(no need for PBW)变速箱档位位置传感器(电子驻车不需要)
离合器硬件
Wet nested clutch 湿式嵌套式离合器
Oil cooling 油冷压力循环
Oil volume 3.5L 油量3.5L
Low viscosity oil 低粘度润滑油
Low inertia 低惯量
Maximum engine speed 7500 rpm最大引擎转速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两个离合器的传递扭矩/压力比类似，即34 Nm/bar
Stroke point of 1,5 bar 半接合点压力约1.5 bar
Weight 7,0 kg(with clutch support) 重7.0千克（含离合器支撑）
齿轮组
Center distance中心距:183 mm
Max gear ratio span of 6.4最大齿轮速比范围6.4
Shortest 1st gear: 18.5最大一档速比：18.87
Longest 7th gear: 1.87最小七档速比: 2.735
Two dependancies 2个共用输入齿轮齿轮组
- 4th and 6th gear 4档及6档齿轮
- 3th and 5th gear 3档及5档齿轮
换挡系统
Odd and even gears are controlled by two shift drums respectively奇偶档位分别由两个换档鼓控制
Two e-motors control two shift drums respectively两个电机分别控制两个换档鼓
Double-cone rings for 1st and Rev gear一档和倒档为双锥
Single-cone rings for all other gears其它档为单锥
Carbon-lining for all cone rings所有同步环为碳衬
集成式电子驻车
The basic concept idea is a gear train driven by the gear of the shift
drum 2 which is then turning the park lock shaft.基本概念为由换档毂2带动一个齿轮传动，然后带动驻车锁轴。
三、主要产品特点
Low weight(low to 64kg for dry weight)重量低(净重低至64kg)
High transmit efficiency(up to 97%)较高的传递效率（综合效率可达97%）
Compact design, easy for package and integration结构紧凑，易于布置和集成
Park by wire, better to support ADAS/APA电子驻车，更方便的支持ADAS/APA
Active thermal management (electric on demand oil cooling)主动的热管理（适时电子油冷系统）
Good temperature performance due to high thermal capacity高的热容量带来的更好的温度表现
Robust electrical hydraulic clutch actuation system with long development experience基于长期开发经验的稳健电子液压离合器执行系统
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Extended sailing functionaltiy (no additional HW needed)支持扩展的滑行功能（不需要额外硬件支持）
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