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

FIELD: transport engineering.

SUBSTANCE: invention relates to planetary transmission used in vehicle automatic transmission systems. Proposed hydromechanical tansmission with seven forward speeds and one reverse speed has case 1, torque converter 2, input member 3, output member 4 and planetary reduction gear, three friction clutch and three friction brakes. Planetary reduction fear consists of three planetary gear trains. First planetary gear train consists of sun gear 5, planet pinion carrier 6 and 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 by friction clutch 14 with intercoupled sun gear 8 and sun gear 11 and it is coupled also by friction clutch 15 with intercoupled carrier 9 and carrier 12. Carrier 9 coupled with carrier 12 is connected by friction clutch 16 with sun gear 11 coupled with sun gear 8. Sun gear is coupled with input member 3. Carrier 6 is connected with case 1 by friction brake 18 connects intercoupled carrier 9 and carrier 12 with case 1. Friction brake 19 connects intercoupled sun gear 8 and sun gear 11 with case 1.

EFFECT: enlarged kinematic capabilities, reduced consumption of fuel, increased service life of transmission, enlarged number of types of vehicles which can operate with transmission of proposed kinematic diagram.

4 cl, 6 dwg