CVT SYSTEM

Info Added 2017-04-18


  1. CONSTRUCTION


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

    2. During acceleration, the operation of the linear solenoid valve SLP increases the oil pressure of the primary pulley, thus decreasing the width of the pulley groove.

    3. During deceleration, the operation of the linear solenoid valve SLP decreases the oil pressure of the primary pulley, thus increasing 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.

      A001N0MC01
      *1 Primary Pulley *2 Steel Belt
      *3 Secondary Pulley - -
      *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, resulting in a compact and lightweight assembly. The 2 chambers generate hydraulic pressure to vary the groove width.

      A001MXTC01
      *a Pulley Ratio (Low) *b Pulley Ratio (High)
      A001MND Chamber A B003XHG 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.

      A001N3QC01
      *1 Steel Ring *2 Element

  2. OPERATION


    1. The changing of the pulley ratio is accomplished in a continuously variable manner by varying the widths of the grooves of the primary and secondary pulleys.

      A001MQRC03
      *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
      *9 Input Shaft *10 Reverse Brake

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

      A001MWBC03
      *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)

      A001ML7C03
      *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)

      A001N8EC03
      *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)

      A001MHJC03
      *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)