HYDRODYNAMIC TORQUE CONVERTER FOR TRANSMISSION Russian patent published in 2007 - IPC F16H41/04 F16H45/02 

FIELD: transport engineering; automatic transmissions.

SUBSTANCE: invention relates to members of fixed-ratio planetary gear transmission. Proposed hydrodynamic torque converter consists of housing 1, pump 2, rigidly coupled with housing 1, turbine 3, stator 4, overrunning clutch 5, support bushing 6, drive bushing 7, at least two torsional vibration dampers 8, at least three fasteners 9 holding housing on drive set and lockup friction controlled clutch consisting of drum 10, piston 11, disk 12, at least three steel disks 13, at least two friction disks 14, fasteners 15 and sliding bearing 16. Housing 1 is coupled with fasteners 9 and is rigidly coupled with pump 2. Drum 10 of friction controlled clutch is welded coaxially to inner surface of housing 1. Drum is made stepped, and is provided with splines made on inner surface of drum larger diameter pointed to turbine 3 to install steel disks 13, and flat surface formed on inner surface of drum smaller diameter pointed to housing is designed for resting of piston 11. Stator 4 is arranged between pump 2 and turbine 3 being coupled with transmission case through overrunning clutch 5. Pump 2, turbine 3 and stator are furnished with vanes. Circular groove is made on axle of rotation of housing 1 in outer direction into inner part of which support bushing 6 for drive shaft of transmission is press fitted. Said bushing is provided with inner axial hole in which sliding bearing 16 is installed. Support bushing 6 is made stepped, and splines are made on its outer surface for connecting with piston 11 of friction controlled clutch. Turbine 3 is coupled by fasteners 15 simultaneously with drive bushing for transmission input shaft and disk 12 on which at least one torsional vibration damper 8 is installed and on outer surface of which slimes are made for mounting friction disks 14 of friction controlled clutch. Drive bushing 7 is separated from support bushing 6 at one side and from overrunning clutch 5 at other side by thrust bearings.

EFFECT: improved operating characteristics owing to reduced dimensions and number of components, increased service life.

4 cl, 1 dwg