AGMA 07FTM09-2007 pdf free download

08-07-2021 comment

AGMA 07FTM09-2007 pdf free download.The Ikona Clutch and Differential.
Description of the differential
The layout of the Ikona CVT used as a differential is essentially the same as that shown in Figure 1. The only difference is that the internal gear is meshed with two pinions, and each pinion is mounted on its own eccentric. In a rear-wheel drive vehicle, the internal gear would be attached to the hypoid gear, while in a front-wheel drive it would be attached to the gearbox output shaft. Each pinion would drive one of the vehicle wheels.4
When a vehicle rounds a corner, the driving wheels must turn at different speeds, in order to avoid extreme tire wear. A conventional differential allows the drive shafts to turn at different speeds. with the average speed equal to the differential input speed. and the torques in the two output shafts being equal. A problem with this device occurs if one wheel loses traction, for example when it rests on ice. The torque on this wheel falls to zero, causing the torque on the other driving wheel also to become zero. The second wheel stops turning, and the first wheel turns at twice the speed of the differential input.
This problem is partly avoided by the use of a limited slip differential. In this case, when the first wheel loses traction and starts to spin, a reduced torque is maintained on the second wheel, sometimes by the use of a plate clutch. When a vehicle is in motion, this reduced torque is generally enough to continue the motion. But for a vehicle starting from rest, the torque may not be enough to start the vehicle, when one wheel has lost its traction.
In the Ikona differential, the speed of each output shaft is determined by the speed of the corresponding eccentric, and these are controlled separately by the vehicle computer. If the gear pair has and teeth, and the eccentrics do not turn, then the differential output shafts will rotate at the speed of the differential input,5 multiplied by As before, this speed is called the synchronous output speed. In straight vehicle motion, the output shafts will both turn at the synchronous speed. When the vehicle turns, the computer could be programmed to allow the shafts to turn at their natural speeds, which depend on the vehicle speed and the radius of the vehicle path. However, this differential has an important advantage over conventional differentials. The computer will be programmed to control the eccentric speeds, so that the wheels are forced to turn at the correct speeds, corresponding to the vehicle speed and the radius of its path. This feature of the differential provides active torque steering.
A second advantage of the Ikona differential is its response when one wheel loses traction. The torque applied to this wheel will fall to zero, but there is no reason why the wheel should start to spin, since its speed is controlled by the speeds of the differential input and the eccentric. If the position of the accelerator pedal is unchanged, both wheels will continue to turn at the same speeds they had before the first wheel lost its traction. And the entire torque from the differential input will then be transmitted to the second drive wheel, which means its torque will
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