公开(公告)号：CA1289900C

公开(公告)日：1991-10-01

申请号：CA512800

申请日：1986-06-30

Applicant: BORG WARNER AUTOMOTIVE

Inventor： MCCOLL JOHN W ,  MOTT PHILIP J ,  SALLE RALPH D

IPC: F16D25/063 ,  F16D25/0635 ,  F16D25/12 ,  F16D48/02

Abstract: STARTING CLUTCH ASSEMBLY FOR A CONTINUOUSLY VARIABLE TRANSMISSION A hydraulically-actuated starting clutch (10) adapted for a continuously variable transmission which is located at the output of the transmission to couple the vehicle wheels to the engine upon a signal from the throttle induced system oil pressure. The clutch includes a cover (25) connected to the drive shaft through a hub (19) forming a pressure chamber (29) behind a piston, a Belleville spring (71) acted upon by a pressure disc extending between the spring and the piston and urging a pressure plate (43) against the clutch plate (46) and an end plate (39) secured in the cover, and retractor fingers on said pressure disc (63) engaging said pressure plate (43). A cooling oil impeller is positioned between the end plate and a clutch plate hub and operatively connected to the end plate, and the clutch plate is operatively connected to a sleeve shaft to drive the differential for the vehicle wheels. Also, a balance cap (77) is operatively connected onto the hub (19) over the pressure-chamber to form a balance chamber (82)in front of the piston to receive oil and compensate for the centrifugal effect of the oil in the pressure chamber behind the piston.