【正文】 h the stub shaft 72 of the latter. The sun gear 64 transfers the torque to the pla gears 68 where it bines with the torque transferred from the ring gear 66, so that the carrier 70 and the drive flange 78 see essentially the full torque applied at the hub 40. In other words, the torque flows through each torque coupling 24 and 26 in two pathsa mechanical path, including the ring gear 68, pla gears 68 and carrier 70, and a clutch path, including the electromag 50 and armature 52 of the clutch 42, and the sun gear 64, pla gears 68 and carrier 70, of the plaary set 44. Most of the torque transfers through the mechanical path, with the apportionment between the two paths depending on the gear ratio U between ring gear 66 and the sun gear 64. The higher the ratio, the less the amount of torque transferred through the clutch path. The relationship between the torque in the two paths may be expressed with a plot on Cartesian coordinates (FIG. 5). The arrangement is such that a small change in torque transferred through the clutch 42 results in a much greater change in torque transmitted through the coupling 24 or 26 of which the clutch 42 is a ponent, and the torque transmitted through the clutch 42 is dependent on the magnitude of the current passing through the electromag 50 of the clutch 42. The torque varies almost linearly with the current passing through the electromag 50. By controlling the current in the clutches 42 of the two torque couplings 24 and 26, the torque can be divided between the two drive wheels 2 and 4 to best acmodate the driving conditions under which the vehicle A operates. For example, if the vehicle A negotiates a left turn, particularly at higher speeds, more torque should be delivered the right drive wheel 2 than to the left drive wheel 4. The clutches 42 in the two torque couplings 24 and 26 are adjusted accordingly. To this end the vehicle A may be provided with accelerometers for determining lateral and longitudinal accelerations and yaw, and hence the severity of turns negotiated, as well as speed sensors for determining the velocities of the two axle shafts 10 and 12, preferably from the antilock braking system for the wheels 2 and 4. More sensors may determine the position of the steering wheel and the temperatures of the clutches 42 and of the wheel service brakes. These sensors produce signals which may be fed to a microprocessor in the vehicle, which microprocessor would determine the best apportionment of torque between the two driving wheels 2 and 4 and control the current in the clutches 42 of the two torque couplings 10 and 12 accordingly. A modified electric drive axle C (FIGS. 6 amp。 FIG. 4 is an enlarged sectional of one of the torque couplers in the drive axle。同樣由于離合器 42 被連接到驅(qū)動(dòng)法蘭46，離合器 42 和 44 在每個(gè)聯(lián)軸器 24 和 26 中的位 置也可以顛倒。 當(dāng)電機(jī) 84 通電，將扭矩傳遞個(gè)小齒輪 100。此外，主傳動(dòng)器 88 和傳動(dòng)軸 106 連接，傳動(dòng)軸延伸在鼓 40 和旋轉(zhuǎn)軸 X 之間。 電機(jī) 84 包括一個(gè)定子 92 和一個(gè)轉(zhuǎn)子 94，以及安裝在轉(zhuǎn)子 94 上的電機(jī)軸 96。更多的傳感器能決定方向盤的位置以及離合器 42 和剎車系統(tǒng)的溫度。 通過控制兩聯(lián)軸器 24 和 26 上的離合器 42 的電流，扭矩能以最佳條件被分配到運(yùn)行車輛 A 的兩個(gè)驅(qū)動(dòng)輪 2 和 4 上。比例越高，則越少的扭矩通過離合器路徑傳遞。電樞 52 旋轉(zhuǎn)并且通過離合器 42 對(duì)行星組 44 的上的太陽輪 64的作用改變扭矩，因?yàn)殡姌?52 和太陽輪 64 是通過傳動(dòng)軸的尾端相連接的。在每個(gè)聯(lián)軸器 24 和 26 上 ，力矩從運(yùn)轉(zhuǎn)的電機(jī) 22 通過在聯(lián)軸器 24 和 26 上的鼓 40 傳到離合器42 上的電磁體 50，同時(shí)傳到行星齒輪 44 上的齒圈 66。電機(jī) 22 通過各自的聯(lián)軸器 24 和 26 驅(qū)動(dòng)兩個(gè)半軸 10 和 12。行星架 70 有插腳 74 連接到行星齒輪 68，所以，當(dāng)行星齒輪 68 旋轉(zhuǎn)時(shí)，插腳 74 也跟著旋轉(zhuǎn)。此外，它還有一個(gè)安置在行星齒輪中心軸的行星架 70。 離合器 42 中的電磁體 50 被離合器 42 的一個(gè)組件驅(qū)動(dòng)法蘭固定在靠近 聯(lián)軸器 24和 36 的電機(jī)軸 34 的末端。在大多數(shù)情況下這兩者之間的一些滑移將要發(fā)生。電樞 52 位于電磁體 50 里面，二者是被抗磨軸承和環(huán)型均勻的間隙 g 給分開的。驅(qū)動(dòng)法蘭 46 大多數(shù)是位于橋殼 20 的外部，從而將力矩作用于聯(lián)軸器 24 和 26 并分別作用到半軸 10 和 12。 橋殼 20 也擁有兩個(gè)扭矩聯(lián)軸器 24 和 26，它們每一個(gè)都包括一個(gè)驅(qū)動(dòng)鼓 40，一個(gè)磁粉離合器 42，一組行星齒輪 44，一個(gè)驅(qū)動(dòng)器法蘭 46。電機(jī) 18 和聯(lián)軸器 24和 26 被安裝在橋殼 20 上。為此，車輛 A 有一個(gè) 電源裝置 6，可以使用內(nèi)燃機(jī)或一組蓄電池甚至燃料電池