HYBRID TRANSMISSION SYSTEM


  1. FUNCTION


    1. The compound gear unit is composed of Motor Generator No. 1 (MG1) mainly working as a generator, Motor Generator No. 2 (MG2) mainly working as a power source, the power split device for splitting the engine output and motor output into power to drive MG1 and to drive the wheels, the reduction gear which reduces the speed of the MG2 output, the input shaft, the intermediate shaft and the output shaft.

      A01115AC03
      *1 MG1 (Motor Generator No. 1) *2 Input Shaft
      *3 Power Split Planetary Gear *4 Intermediate Shaft
      *5 Sun Gear (Motor Speed Reduction Planetary Gear) *6 Ring Gear (Motor Speed Reduction Planetary Gear)
      *7 Output Shaft *8 Planetary Carrier (Motor Speed Reduction Planetary Gear)
      *9 Motor Speed Reduction Planetary Gear *10 Pinion Gear (Motor Speed Reduction Planetary Gear)
      *11 MG2 (Motor Generator No. 2) *12 Planetary Carrier (Power Split Planetary Gear)
      *13 Ring Gear (Power Split Planetary Gear) *14 Pinion Gear (Power Split Planetary Gear)
      *15 Sun Gear (Power Split Planetary Gear) - -

    2. By using the power split device, engine output is split into power to drive MG1 and to drive the wheels. The engine output is input through the input shaft and transmitted from the planetary carrier of the power split device through the pinion gear to the sun gear connected to MG1 and the ring gear connected to the intermediate shaft. Also, when the engine is started, MG1 output is transmitted to the engine so that MG1 functions as a starter.

    3. MG2 output is transmitted from the sun gear of the reduction gear connected to MG2 through the pinion gear to the planetary carrier connected to the output shaft.

      Planetary Gear Connection
      Planetary Gear Connection Connected to
      Power Split Planetary Gear Sun Gear MG1
      Planetary Gear Components Input Shaft
      Ring Gear Intermediate Shaft
      Motor Speed Reduction Planetary Gear Sun Gear MG2
      Planetary Carrier Output Shaft