Hybrid electric motor vehicle and a final drive unit therefor
In a motor vehicle having an internal combustion engine driving a front final drive unit connected to a pair of front wheels and a pair of rear wheels 21 driven through the rear final drive unit 18 by a longitudinal propshaft 19, the rear final drive unit 18 houses a transversely arranged electric m...
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Main Authors | , |
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Format | Patent |
Language | English |
Published |
13.04.2010
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Subjects | |
Online Access | Get full text |
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Summary: | In a motor vehicle having an internal combustion engine driving a front final drive unit connected to a pair of front wheels and a pair of rear wheels 21 driven through the rear final drive unit 18 by a longitudinal propshaft 19, the rear final drive unit 18 houses a transversely arranged electric motor/generator 35. The motor/generator 35 has a hollow rotor 36 which is connected to a spur input gear 64 of a layshaft reduction gear train 65 through a hollow shaft 37. This input gear 64 meshes with a large diameter spur gear 66 fixed on a layshaft 67 which also has a small diameter spur gear 68 fixed on it. The small diameter spur gear 68 meshes with a large diameter driving gear 69 fast with a differential 28 which drives the rear wheels by means of the drive shafts 22, one of which extends concentrically through the rotor 36 and the hollow shaft 37. A control clutch 33 controllably couples the propshaft 19 to an input shaft 32 which drives a final drive bevel pinion 31 which meshes with a crownwheel 27 fast with the large diameter spur gear 66. The layshaft 67 provides a reduction ratio between the motor/generator 35 and the final drive pinion 31 and the differential 28 as well as providing a reduction ratio between the input shaft 32 and the differential 28. |
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Bibliography: | Application Number: US20070697076 |