Planetary gear train for automatic transmission

Patent · Tue Apr 28 04:00:00 EDT 1987

OSTI ID:6492447

Hiraiwa, K

A planetary gear train is described for an automatic transmission, the planetary gear train having gear ratios including a first forward gear ratio and a reverse, the planetary gear train comprising: an input shaft; a basic planetary gearing including a first rotary element which is to be held stationary when the first gear ratio is established and also when the reverse is established, and a second rotary element which is to serve as an output member of the basic planetary gearing; an output planetary gear set including a ring gear, a sun gear and a pinion carrier; change speed means for establishing any desired one of the gear ratios; a clutch means for establishing a connection between the other one of the ring gear and the sun gear of the output planetary gear set and the first rotary element of the basic planetary gearing during operation with the first gear ratio and also during operation with the reverse, and a brake means for anchoring the other one of the ring gear and the sun gear of the output planetary gear set during operation with the reverse; and an output shaft connected to the pinion carrier of the output planetary gear set.

• Assignee: Nissan Motor Co., Ltd., Yokohama, JP
• Patent Number(s): US 4660439
• OSTI ID: 6492447
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330602* -- Vehicle Design Factors-- Engine-Transmission Matching
BRAKES
CONTROL EQUIPMENT
DESIGN
EQUIPMENT
GEARS
MACHINE PARTS
MECHANICAL TRANSMISSIONS
ROTORS
SHAFTS
SPEED REGULATORS
VEHICLES
VELOCITY