초록 ▼

A CVT (continuously variable transmission) differential is provided which includes a first drive input ring gear having internal teeth. A planetary or bevel gear differential is connected to the first drive input ring gear. The planetary differential includes a planet gear carrier, first planet gear

A CVT (continuously variable transmission) differential is provided which includes a first drive input ring gear having internal teeth. A planetary or bevel gear differential is connected to the first drive input ring gear. The planetary differential includes a planet gear carrier, first planet gears, second planet gears, a first sun gear, and a second sun gear. Alternatively, the bevel gear differential includes a carrier that supports drive and driven bevel gears. A second drive input is connected to the planet gear carrier or bevel gear carrier. Preferably, a primary drive is connected to the first drive input ring gear, which can be an internal combustion engine or an electric motor. Preferably, a secondary drive is connected to the second drive input, which is preferably an electric motor, for example for a hybrid motor vehicle.

대표청구항 ▼

1. A continuously variable transmission differential, comprising: a first drive input ring gear having internal teeth;a planetary differential connected to the first drive input ring gear, the planetary differential including a planet gear carrier, first planet gears, second planet gears, a first su

1. A continuously variable transmission differential, comprising: a first drive input ring gear having internal teeth;a planetary differential connected to the first drive input ring gear, the planetary differential including a planet gear carrier, first planet gears, second planet gears, a first sun gear, and a second sun gear, teeth of the first planet gears are engaged by the internal teeth of the first drive input ring gear and engage teeth of the first sun gear, and the teeth of each of the first planet gears also engage teeth of corresponding ones of the second planet gears, and the teeth of the second planet gears engage teeth of the second sun gear; anda second drive input connected to the planet gear carrier. 2. The continuously variable transmission differential as claimed in claim 1, further comprising a primary drive connected to the first drive input ring gear. 3. The continuously variable transmission differential as claimed in claim 2, wherein primary drive is an internal combustion engine or an electric motor. 4. The continuously variable transmission differential as claimed in claim 2, further comprising a torque converter located between the primary drive and the first drive input ring gear. 5. The continuously variable transmission differential as claimed in claim 1, further comprising a secondary drive connected to the second drive input. 6. The continuously variable transmission differential as claimed in claim 5, wherein the secondary drive comprises a second electric motor. 7. The continuously variable transmission differential as claimed in claim 6, wherein the second electric motor is a motor-generator. 8. The continuously variable transmission differential as claimed in claim 6, wherein the second electric motor is connected to a controller in order to control an output ratio of the continuously variable transmission differential in order to vary at least one of a speed and a direction of rotation of the first and second sun gears. 9. The continuously variable transmission differential as claimed in claim 6, wherein the second electric motor includes a rotor connected to the planet carrier and a stator that is mounted fixed relative to the rotor. 10. The continuously variable transmission differential as claimed in claim 6, wherein the second electric motor includes a drive gear that engages a gear on the planet carrier. 11. The continuously variable transmission differential as claimed in claim 1, wherein first and second output shafts are connected to the first and second sun gears, respectively. 12. The continuously variable transmission differential as claimed in claim 11, wherein the second drive input comprise a second electric motor that is arranged concentrically around one of the output shafts.