Automatic transmission

Patent · Tue Aug 26 00:00:00 EDT 1986

OSTI ID:5284932

Miura, M; Inuzuka, T

1. An automatic transmission with four forward speeds and one reverse position, is described which consists of: an input shaft; an output member; first and second planetary gear sets each having a sun gear, a ring gear and a carrier supporting a pinion in mesh with the sun gear and ring gear; the carrier of the first gear set, the ring gear of the second gear set and the output member all being connected; the ring gear of the first gear set connected to the carrier of the second gear set; a first clutch means for selectively connecting the input shaft to the sun gear of the first gear set, including friction elements, a piston selectively engaging the friction elements and a fluid servo in which hydraulic fluid is selectively supplied to the piston; a second clutch means for selectively connecting the input shaft to the sun gear of the second gear set a third clutch means for selectively connecting the input shaft to the carrier of the second gear set including friction elements, a piston selectively engaging the friction elements and a fluid servo in which hydraulic fluid is selectively supplied to the piston; a first drive-establishing means for selectively preventing rotation of the ring gear of the first gear set and the carrier of the second gear set in only one direction and, alternatively, in any direction; a second drive-establishing means for selectively preventing rotation of the sun gear of the second gear set; and a drum being open to the first planetary gear set, with a cylindrical intermediate wall, an inner peripheral wall and outer peripheral wall and forming the hydraulic servos of the first and third clutch means between the intermediate wall and the inner peripheral wall and between the intermediate wall and the outer peripheral wall respectively.

• Assignee: Aisin-Warner Kabushiki Kaisha, Anjo
• Patent Number(s): US 4607541
• OSTI ID: 5284932
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330602* -- Vehicle Design Factors-- Engine-Transmission Matching
CONTROL EQUIPMENT
DESIGN
EQUIPMENT
FLUIDS
FRICTION
GEARS
HYDRAULIC FLUIDS
MACHINE PARTS
MECHANICAL TRANSMISSIONS
MOTION
OPERATION
PISTONS
ROTATION
SERVOMECHANISMS
SHAFTS
SPEED REGULATORS
VEHICLES
VELOCITY
WORKING FLUIDS