CVT SYSTEM


  1. CONSTRUCTION


    1. The widths of the grooves of the pulleys are changed through hydraulic control.

    2. During acceleration, the action of linear solenoid valve SLP increases the fluid inflow volume to the primary pulley, thus narrowing the width of the pulley groove.

    3. During deceleration, the action of linear solenoid valve SLP increases the outflow volume to the primary pulley, thus widening the width of the pulley groove.

    4. The secondary pulley is hydraulically controlled by the linear solenoid valve SLS. The linear solenoid valve SLS controls the belt clamping pressure to ensure the proper power transmission efficiency.

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      *1 Secondary Pulley *2 Primary Pulley
      *3 Steel Belt - -
      *a Pulley Ratio (Low) *b Pulley Ratio (High)
      *c Groove Width (Large) *d Groove Width (Small)

    5. The primary pulley uses a double piston construction. 2 chambers generate hydraulic pressure to vary the groove width. This has resulted in a compact and lightweight assembly.

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      *a Pulley Ratio (Low) *b Pulley Ratio (High)
      B008G8T Chamber A A01O7L4 Chamber B

    6. The steel belt consists of elements and 2 rows of steel rings. In contrast to chains and V-belts which transmit power through the use of tensile force, this steel belt uses the compressive action (pushing force) of the elements to transmit power.

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      *1 Steel Ring *2 Element

  2. OPERATION

    Figure 1. Pulley Ratio Low (Shift Lever in D)

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    *1 Primary Pulley *2 Steel Belt
    *3 Secondary Pulley *4 Differential Ring Gear
    *5 Reduction Driven Gear *6 Reduction Drive Gear
    *7 Differential Drive Pinion *8 Forward Clutch (On)
    *9 Input Shaft *10 Reverse Brake (Off)
    *a Groove Width (Large) *b Groove Width (Small)

    Figure 2. Pulley Ratio High (Shift Lever in D)

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    *1 Primary Pulley *2 Steel Belt
    *3 Secondary Pulley *4 Differential Ring Gear
    *5 Reduction Driven Gear *6 Reduction Drive Gear
    *7 Differential Drive Pinion *8 Forward Clutch (On)
    *9 Input Shaft *10 Reverse Brake (Off)
    *a Groove Width (Small) *b Groove Width (Large)

    Figure 3. Neutral (Shift Lever in N)

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    *1 Primary Pulley *2 Steel Belt
    *3 Secondary Pulley *4 Differential Ring Gear
    *5 Reduction Driven Gear *6 Reduction Drive Gear
    *7 Differential Drive Pinion *8 Forward Clutch (Off)
    *9 Input Shaft *10 Reverse Brake (Off)
    *a Groove Width (Large) *b Groove Width (Small)

    Figure 4. Reverse (Shift Lever in R)

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    *1 Primary Pulley *2 Steel Belt
    *3 Secondary Pulley *4 Differential Ring Gear
    *5 Reduction Driven Gear *6 Reduction Drive Gear
    *7 Differential Drive Pinion *8 Forward Clutch (Off)
    *9 Input Shaft *10 Reverse Brake (On)
    *a Groove Width (Large) *b Groove Width (Small)