HYDROMECHANICAL TRANSMISSION Russian patent published in 2006 - IPC F16H3/66 F16H47/08 B60K17/10 

FIELD: transport engineering.

SUBSTANCE: invention relates to planetary transmission used in vehicle automatic transmission system. Proposed transmission with six forward speeds and one reverse speed has case 1, torque converter 2, input member 3, output member 4 and planetary reduction gear, two friction clutches and three friction brakes. Planetary reduction gear contains 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. Input member 3 is connected with carrier 9 of second planetary gear train by friction clutch 24, and with sun gear 5 of first planetary gear train by friction clutch 15. 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 crown gear 10 of second planetary gear train with case 1. Friction brake 18 connects sun gear 11 third planetary gear train with case 1.

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

16 cl, 18 dwg