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 systems. Proposed hydromechanical transmission with nine 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 four friction brakes. Planetary reduction gear consists of four planetary gear trains. First planetary gear train consists of sun gear 5, planet pinion carrier 6 and crown gear 7. Second planetary gear train consist 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. Fourth planetary gear train consists of sun gear 14, planet pinion carrier 15 and crown gear 16. Sun gear 5 is connected with case 1 by fricition brake 17. Friction brake 18 connects intercoupled carrier 6 and carrier 9 with case 1. Friction brake 19 connects intercoupled crown gear 10, sun gear 11 and gear 14 with case 1. Friction brake 19 connects intercoupled crown gear 10, sun gear 11 and sun gear 14 with case 1. Friction brake 20 connects intercoupled carrier 15 and crown gear 13 with case 1. Input member 3 of torque converter is coupled by friction clutch 21 with intercoupled crown gear 13 and carrier 15. Carrier 12 is coupled by friction clutch 22 with intercoupled carrier 6 and carrier 9. Sun gear 8 and crown gear 7 are coupled with input member 3.

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

10 cl, 12 dwg