Multi-speed power transmission

Details Multi-speed power transmission Multi-speed power transmission

F - Mech Eng,Light,Heat,Weapons

16

H

74/118

F16H 3/44 (2006.01) F16H 3/66 (2006.01)

Patent

CA 1114650

Abstract of the Disclosure: A four-speed planetary transmission has three friction clutches which are selectively engageable in pairs or simultaneously to provide a drive connection between the transmission input and the planetary gearing during the four forward speeds. One apply piston selectively engages two of the friction clutches and a second apply piston selectively engages the other friction clutch and one of the two friction clutches. Simultaneous actuation of both apply pistons causes engagement of all three clutches. A one-way clutch is dis- posed in series drive relation with the friction clutch that is selectively engageable by both apply pistons.

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