Automatic power transmission mechanism for a four wheel drive vehicle

Patent · Tue Nov 17 04:00:00 EST 1987

OSTI ID:5683910

Garrett, R J

In a transmission for a vehicle having two forward traction wheels and two rear traction wheels, this patent describes a multiple ratio transaxle having an input shaft adapted to be connected to an engine and arranged on a first axis and planetary gearing coaxially disposed relative to the input shaft and an output shaft; a first differential gear mechanism forming a part of the transaxle and having a torque output gear and side gears adapted to be connected to axle shafts for the forward wheels; a torque transfer drive means connecting the output shaft with the torque output gear including a first drive gear coaxially mounted relative to the torque output gear; an interaxle geared differential having a differential carrier and a pair of side gears, an interaxle torque input shaft having a third axis parallel to the second axis; a rear axle drive means connected to one of the interaxle differential side gears; a second drive gear and a third drive gear coaxially mounted with respect to the interaxle differential side gears; and first, second, third and fourth clutch means coaxially arranged with respect to the interaxle torque input shaft and independently actuatable for selectively connecting respectively (i) the third drive gear with the second drive gear, (ii) the second drive gear with the intermediate shaft, (iii) the third drive gear with the other side gear of the interaxle differential and (iv) the rear axle drive means with the carrier of the interaxle differential.

• Assignee: Ford Motor Co., Dearborn, MI
• Patent Number(s): US 4706517
• OSTI ID: 5683910
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330602* -- Vehicle Design Factors-- Engine-Transmission Matching
AUTOMATION
DESIGN
GEARS
MACHINE PARTS
MECHANICAL TRANSMISSIONS
OPERATION
SHAFTS
TORQUE
VEHICLES
WHEELS