Planetary gear train for automotive transmission or the like

Patent · Tue Jan 27 04:00:00 EST 1987

OSTI ID:6812377

Hiraiwa, K

This patent describes a planetary gear train transmission comprising: an input shaft operatively connected with a source of rotational energy; first and second plAnetary gear sets respectively including first and second sun gears, first and second ring gears, first and second pinions carriers and first and second sets of pinion gears operatively mounted on the first and second pinion carriers and respectively arranged to mesh with their respective sun and ring gears; a first clutch selectively providing a drive connection between the input shaft and the first sun gear; a second clutch selectively providing a drive connection between the input shaft and the first sun gear; a third clutch selectively providing a drive connection between first and second sun gears; a fourth clutch selectively providing a drive connection between the first sun gear and the second pinion carrier; a first brake selectively rendering the second sun gear stationary with respect to a housing in which the transmission is disposed; a second brake selectively rendering the second pinion carrier stationary with respect to the housing; and an output shaft in drive connection with the first pinion carrier and the second ring gear, such that the transmission produces four forward speeds using only two planetary gear sets.

• Assignee: Nissan Motor Co., Ltd., Yokohama
• Patent Number(s): US 4638688
• OSTI ID: 6812377
• 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
MOTION
OPERATION
ROTATION
SHAFTS
SPEED REGULATORS
VEHICLES
VELOCITY