HYDROMECHANICAL TRANSMISSION Russian patent published in 2006 - IPC F16H3/62 F16H47/08 B60K17/10 

FIELD: transport engineering.

SUBSTANCE: invention relates to planetary transmission used in vehicle automatic transmission systems. Proposed hydromechanical transmission with six forward speeds and two reverse speeds has case 1, torque converter 2, input member 3, output member 4 and planetary reduction gear, two friction clutches and four friction brakes. Planetary reduction gear consists of three planetary gear trains. First planetary gear train consists of sun gear 5, planet pinion carrier 6 and crown gear 7. Second planetary gear train consists of sun gear 8, planet pinion carrier 9 and crown gear 10. Third planetary gear train consists of sun gear 11, planet pinion carrier 12 and crown gear 13. Carrier of second planetary gear train is connected by friction clutch 14 with input member 3. Input member 3 is connected by friction clutch 15 with sun gear 5 of first planetary gear train. Crown gear 7 of first planetary gear train is coupled with input member 3. Sun gear 5 of first planetary gear train is connected with case 1 by friction brake 16. Friction brake 17 connects intercoupled carrier 6 of first planetary gear train crown gear 13 of third planetary gear train and sun gear 8 of second planetary gear train with case 1. Friction brake 18 connects sun gear 11 of third planetary gear train with case 1. Friction brake 19 connects intercoupled carrier 9 of second planetary gear train and carrier 12 of third planetary gear train with case 1.

EFFECT: enlarged kinematic capabilities, increased service life of transmission.

5 cl, 7 dwg