INFINITELY VARIABLE POWER-DERIVED TRANSMISSION WITH TWO OPERATING MODES CONTROLLED BY A CRABOT GAUGE FOR A MOTOR VEHICLE

摘要

Infinitely variable transmission with power bypass with two operating modes for a motor vehicle equipped with a heat engine, of the type comprising a first main power bypass path with a compound epicyclic gear train (3a, 3b) connecting the heat engine (1) at the wheels of the vehicle (2), a second power bypass track with a first single epicyclic gear train (4), two electric machines (5, 6) providing a continuous speed variator and a second gear train single mode change epicyclic gears (7) as well as a coupling / decoupling assembly (16, 17) capable of locking or releasing a member of the second epicyclic mode change gear train, depending on the operating mode, by the fact that the coupling / decoupling assembly comprises a sliding gear (27) provided with a dog clutch toothing (28), which can be moved in translation by a hydraulic cylinder (42) and two sets of crab teeth ots (24, 26) respectively integral with a member of the second epicyclic gear train (7) for changing mode.