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 transmission with six forward speeds and one reverse speed has case 1, torque converter 2, input member 3, output member 4, planetary reduction gear, two friction clutches and three friction brakes. Planetary reduction gear consists of three planetary gear trains. First planetary gear train consists of sun gear 5, carrier 6 and crown gear 7. Second planetary gear train consists of sun gear 8, carrier 9 and crown 10. Third planetary gear train consists of sun gear 11, carrier 12 and crown gear 13. Input member 3 is connected by friction clutch 14 with carrier 6 of first planetary gear train and by friction clutch 15, with sun gear 5 of first planetary gear train. Sun gear 8 of second 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 and carrier 12 of third planetary gear train with case 1. Friction brake 18 connects sun gear 11 of third planetary gear train with case 1.

EFFECT: enlarged kinematic capabilities, increase life of transmission.

24 cl, 28 dwg