HYDROMECHANIC TRANSMISSION Russian patent published in 2015 - IPC F16H47/08 F16H3/44 

FIELD: transport.

SUBSTANCE: automatic transmission implementing nine forward gears and one reverse gear contains casing (19), input link (20), output link (21), hydrodynamic torque converter and planetary reduction gear. The planetary reduction gear consists of four planetary gear sets. The first planetary gear set consists of a central gear (3), carrier (2) for satellites and a crown gear (1). The second planetary gear set consists of a central gear (6), carrier (5) for satellites and a crown gear (4). The third planetary gear set consists of a central gear (9), carrier (8) for satellites and a crown gear (7). The fourth planetary gear set consists of a central gear (12), carrier (11) for satellites and a crown gear (10). Input link (20) is connected with output link of hydrodynamic torque converter (22), with sun gear (3) of the first planetary gear set and with sun gear (6) of the second planetary gear set. Output link (21) is connected with crown gear (10) of the fourth planetary gear set and with carrier (5) of the second planetary gear set . Brake (13) connects the interconnected crown gear (7) of the third planetary gear set and carrier (2) of the first planetary gear set with transmission case (19). Brake (14) connects sun gear (9) of the third planetary gear set with transmission case (19). Brake (15) connects carrier (11) of the fourth planetary gear set with transmission case (19). Clutch (16) connects crown gear (4) of the second planetary gear set with carrier (11) of the fourth planetary gear set. Clutch (17) connects the carrier (11) of the fourth planetary gear set with interconnected input link (20), sun gear (3) of the first planetary gear set and sun gear (6) of the second planetary gear set. Clutch (18) connects the crown gear (1) of the first planetary gear set with interconnected carrier (8) of the third planetary gear set and sun gear (12) of the fourth planetary gear set.

EFFECT: more gears in transmission.

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