Claims
- 1. An integral power train subassembly adapted for connecting to an output of the transmission assembly for an all wheel drive automotive vehicle, said subassembly comprising:
a final drive unit coupled to the transmission output, said final drive unit including a torque multiplier and a final drive output adapted to provide power to the front wheels of the vehicle; a front differential coupled to said final drive output, said front differential including a left front wheel output and a right front wheel output; a power transfer unit coupled to said transmission output independently of said final drive unit, said power transfer unit including a non-parallel gear set and a power transfer output adapted to provide power to the rear wheels of the vehicle; and a housing commonly enclosing said final drive unit, said front differential, and said power transfer unit.
- 2. The subassembly of claim 1 further comprising a biasing unit coupled to said power transfer unit, said biasing unit including interacting elements that limit rotational speed transferred through said power transfer unit thereby increasing torque provided to the wheels of the vehicle.
- 3. The subassembly of claim 2 wherein said biasing unit is coupled to the transmission output in parallel with said power transfer unit.
- 4. The subassembly of claim 2 wherein said biasing unit includes clutch plates.
- 5. The subassembly of claim 1 further comprising a center differential, said center differential coupled to the transmission output and including a front driveline output and a rear driveline output, said rear driveline output being connected to said power transfer unit and said front driveline output being connected to said final drive unit.
- 6. The subassembly of claim 5 further comprising a biasing unit, said biasing unit coupled to said power transfer unit and including interacting elements that limit rotational speed transferred through said power transfer unit thereby increasing torque provided to the wheels of the vehicle.
- 7. The subassembly of claim 6 wherein said biasing unit is coupled to said rear driveline output of said center differential in parallel with said power transfer unit.
- 8. The subassembly of claim 7 wherein said center differential is a planetary gear set and said rear driveline output thereof is a carrier supporting planet gears in said planetary gear set.
- 9. The subassembly of claim 6 wherein said biasing unit is coupled to one element of said center differential in parallel with said power transfer unit.
- 10. The subassembly of claim 6 wherein said biasing unit includes clutch plates.
- 11. The subassembly of claim 5 wherein said center differential is located within said housing.
- 12. The subassembly of claim 1 wherein said power transfer unit includes a parallel gear set.
- 13. The subassembly of claim 12 wherein said parallel gear set includes an input gear wheel and an output gear wheel.
- 14. The subassembly of claim 12 wherein said parallel gear set forms a gear drop.
- 15. The subassembly of claim 12 wherein said parallel gear set is located intermediate said non-parallel gear set and an input of said power transfer unit.
- 16. The subassembly of claim 1 wherein said non-parallel gear set is a bevel gear set.
- 17. The subassembly of claim 1 wherein said non-parallel gear set is a hypoid bevel gear set.
- 18. The subassembly of claim 1 wherein said final drive unit is a planetary gear set.
- 19. The subassembly of claim 18 wherein planet gears of said final drive unit are an output therefore and a sun gear is an input therefore.
- 20. The subassembly of claim 1 wherein said front differential is a bevel gear differential.
- 21. A power train assembly of an all wheel drive automotive vehicle, said assembly comprising:
a transmission assembly having a transmission output, said transmission assembly adapted to be transversely oriented with respect to a longitudinal axis of the vehicle; a center differential, said center differential coupled to said transmission output and including front driveline output and a rear driveline output; a final drive unit coupled to said front driveline output, said final drive unit including a torque multiplier and a final drive output adapted to provide power to the front wheels of the vehicle; a front differential coupled to said final drive output, said front differential including a left front wheel output and a right front wheel output; a power transfer unit coupled said rear driveline output, said power transfer unit including a non-parallel gear set and a rear driveline output adapted to provide power to the rear wheels of the vehicle; a biasing unit coupled to said power transfer unit, said biasing unit including interacting elements that limit rotational speed transferred through said power transfer unit and increasing torque provided to the front wheels of the vehicle; and a housing commonly enclosing said center differential, said final drive unit, said front differential, said biasing unit and said power transfer unit.
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] The present this invention claims the benefit of U.S. provisional application Serial No. 60/315,118, filed Aug. 27, 2001, entitled “Power Train Assembly”.
Provisional Applications (1)
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Number |
Date |
Country |
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60315118 |
Aug 2001 |
US |