System for transmitting power of an engine to driving wheels of a motor vehicle
AssigneeFuji Jukogyo Kabushiki Kaisha
InventorToshio Kobayashi
Life of this patent
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Abstract
A power transmission system has an automatic transmission of a trans-axle type and differential provided between axles of driving wheels of a vehicle. The automatic transmission has a drive pinion shaft having a drive pinion engaged with a ring gear of the differential. An axial center of an input shaft of the transmission and a center of the differential with respect to the horizontal direction is positioned on a vertical line, and a center of the drive pinion shaft is deviated from the vertical line in a lateral direction, whereby the center of the differential is positioned at a central position with respect to the width of the vehicle.
Claims10
A system for transmitting power of an engine to driving wheels of a motor vehicle having an automatic transmission of a trans-axle type and differential provided between axles of the driving wheels, and the automatic transmission having an input shaft operatively connected to a crankshaft of the engine, a drive pinion shaft as an output shaft of the transmission, and a drive pinion formed on the drive pinion shaft and engaged with a ring gear of the differential, the system comprising:
- a center of the input shaft of the transmission and a center of the differential with respect to the horizontal direction being positioned on a vertical plane;
- and
- a center of the drive pinion shaft being deviated from the vertical plane in a lateral direction, and the center of the differential is positioned at a central position with respect to width of the vehicle.
In an automatic transmission system for transmitting power of an engine to driving wheels of a motor vehicle, the system having a differential for differentiating rotational speed between the driving wheels, an automatic transmission including an input shaft operatively connected to the engine, an output shaft, and a gear device for transmitting power of the engine from the input shaft to the output shaft, and an oil pressure control unit actuating the gear device, and the differential including drive shafts connected with the driving wheels, respectively, and a ring gear connected to the output shaft, the improvement in the system comprising:
- the input shaft being positioned at a position in a vertical plane passing through a center with respect to a lateral direction of the vehicle;
- the output shaft being positioned at a positioned deviated from the vertical plane and disposed in a space between the gear device and the oil pressure control unit decreasing distance between the input shaft and the differential with respect to vertical direction of the vehicle while keeping a necessary distance between the output shaft and said automatic transmission;
- a drive pinion provided on the output shaft engaging with the ring gear;
- and
- the differential being positioned with an axis thereof at a position in the vertical plane with decreased height of the system so as to improve driveability of the vehicle.
Dependencies are inferred from the claim text.