AUTOMATIC TRANSAXLE SYSTEM


  1. CONSTRUCTION


    1. A 6-speed configuration has been achieved by using 2 planetary gear units, creating a 6-speed automatic transaxle.

    2. A Ravigneaux type planetary gear unit is used as the rear gear unit. The gear unit consists of pairs of sun gears (front and rear) and planetary pinion gears (long and short) with different diameters within a single planetary gear.

    3. A centrifugal fluid pressure canceling mechanism is used in the No. 1 clutch (C1) and No. 2 clutch (C2) that are applied when shifting between 1st to 6th gears.

    4. The shapes of the grooves in the clutches and brake linings have been optimized in order to reduce drag.

      A01R862C04
      *1 No. 1 Clutch (C1) *2 Intermediate Shaft
      *3 Ravigneaux Planetary Gear Unit *4 Counter Driven Gear
      *5 Differential Ring Gear *6 Differential Drive Pinion
      *7 Input Shaft *8 Underdrive Planetary Gear Unit
      *9 No. 1 Brake (B1) *10 No. 3 Brake (B3)
      *11 Counter Drive Gear *12 No. 2 Brake (B2)
      *13 No. 1 1-way Clutch (F1) *14 No. 2 Clutch (C2)
      B007WJ2 Transmission Power Flow - -
      A01R7VFC02
      *1 Intermediate Shaft *2 Rear Sun Gear (Ravigneaux Planetary Gear Unit)
      *3 Ring Gear (Ravigneaux Planetary Gear Unit) *4 Counter Driven Gear
      *5 Differential Ring Gear *6 Differential Drive Pinion
      *7 Pinion Gear (Underdrive Planetary Gear Unit) *8 Ring Gear (Underdrive Planetary Gear Unit)
      *9 Input Shaft *10 Sun Gear (Underdrive Planetary Gear Unit)
      *11 Front Sun Gear (Ravigneaux Planetary Gear Unit) *12 Counter Drive Gear
      *13 Short Pinion Gear (Ravigneaux Planetary Gear Unit) *14 Long Pinion Gear (Ravigneaux Planetary Gear Unit)
      Component Function
      C1 No. 1 Clutch Connects the intermediate shaft and the Ravigneaux planetary rear sun gear.
      C2 No. 2 Clutch Connects the intermediate shaft and the Ravigneaux planetary ring gear.
      B1 No. 1 Brake Prevents the Ravigneaux planetary front sun gear and the underdrive planetary carrier from turning clockwise or counterclockwise.
      B2 No. 2 Brake Prevents the Ravigneaux planetary ring gear from turning clockwise or counterclockwise.
      B3 No. 3 Brake Prevents the underdrive planetary ring gear from turning clockwise or counterclockwise.
      F1 No. 1 1-way Clutch Prevents the Ravigneaux planetary ring gear from turning counterclockwise.

  2. OPERATION

    Figure 1. 1st Gear (Shift Lever in M)

    A01R8DQC01
    B007WJ2 Rotation Direction B007WKJ Input
    A01R8GP Output A01R7T6 Operates

    Figure 2. 1st Gear (Shift Lever in D)

    A01R8F9C01
    B007WJ2 Rotation Direction B007WKJ Input
    A01R8GP Output A01R7T6 Operates

    Figure 3. 2nd Gear

    A01R7WFC01
    B007WJ2 Rotation Direction B007WKJ Input
    A01R8GP Output A01R7T6 Operates

    Figure 4. 3rd Gear

    A01R884C01
    B007WJ2 Rotation Direction B007WKJ Input
    A01R8GP Output A01R7T6 Operates

    Figure 5. 4th Gear

    A01R8FTC01
    B007WJ2 Rotation Direction B007WKJ Input
    A01R8GP Output A01R7T6 Operates

    Figure 6. 5th Gear

    A01R8BIC01
    B007WJ2 Rotation Direction B007WKJ Input
    A01R8GP Output A01R7T6 Operates

    Figure 7. 6th Gear

    A01R7O0C01
    B007WJ2 Rotation Direction B007WKJ Input
    A01R8GP Output A01R7T6 Operates

    Figure 8. Reverse Gear

    A01R89EC01
    B007WJ2 Rotation Direction B007WKJ Input
    A01R8GP Output A01R7T6 Operates