Skip to main content
OSTI.GOVU.S. Department of Energy Office of Scientific and Technical Information
U.S. Department of Energy
Office of Scientific and Technical Information
 

Four-wheel vehicle drive system

Patent ·
OSTI ID:6719895
; ; ;
A four-wheel drive system is described for use in a vehicle including a first and second pair of road wheels, a power unit including an output shaft, and a power transmission gear unit including input and output shafts. The input shaft of the power transmission gear unit is selectively connected to the output shaft of the power unit. The output shaft of the power transmission gear unit selectively is in driving engagement with the input shaft of the power transmission gear unit. The four-wheel drive system comprises: an engagement member being rotatable about a rotational axis located in a lateral direction of the vehicle, the engagement member being held in driving engagement with the output shaft of the power transmission gear unit; a central differential gear assembly including a central input member fixed to and coaxially rotatable with the engagement member about the rotational axis of the engagement member and including a first central output member and a second central output member enclosed within the central input member. The first and second central output members are rotatable at different speeds about rotational axes substantially aligned with the rotational axis of the engagement member; and a first wheel differential gear assembly being enclosed within the central input member of the central differential gear assembly and including a first wheel input member being rotatable with the first central output member of the central differential gear assembly about the rotational axis of the engagement member and two first wheel output members.
Assignee:
Toyota Jidosha Kabushiki Kaisha, Aichi
Patent Number(s):
US 4645029
OSTI ID:
6719895
Country of Publication:
United States
Language:
English

Similar Records

Four-wheel vehicle drive system
Patent · Tue Jul 07 00:00:00 EDT 1987 · OSTI ID:6041530
Power transfer device for four-wheel drive
Patent · Tue Oct 06 00:00:00 EDT 1987 · OSTI ID:5763038
Constant four wheel drive vehicle transaxle
Patent · Mon Apr 14 23:00:00 EST 1986 · OSTI ID:5636676

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330602* -- Vehicle Design Factors-- Engine-Transmission Matching
ALIGNMENT
DESIGN
GEARS
INCIDENCE ANGLE
MACHINE PARTS
MECHANICAL TRANSMISSIONS
MOTION
OPERATION
POWER TRANSMISSION
ROTATION
SHAFTS
VEHICLES
VELOCITY
WHEELS