Working of the Hydraulics (Actuator) System

Working of the Hydraulics (Actuator) System

As can be seen from figures 5 and 6, the CFC 208F control unit, before each gear change, activates the clutch (1) by a servo actuator and a solenoid valve (EV0) controlled by the control unit.

The control function of the gear shaft takes place in these steps:

  • Selection lever activation
  • Transmission of the selection lever position to the control unit
  • Activation of engagement lever
  • Transmission of the engagement lever position to the control unit

The components involved in the gear change are:

  • Selection actuator
  • Selection potentiometer
  • Wiring harness between selection potentiometer and sectioning connector
  • Selection solenoid valve EV3
  • Wiring harness between selection solenoid valve EV3 (gear selection range 1-2) and the sectioning connector
  • Selection solenoid valve EV4
  • Wiring harness between selection solenoid valve EV4 (gear selection range 5 – R) and the sectioning connector
  • Gear engagement actuator
  • Engagement potentiometer
  • Wiring harness between engagement potentiometer and sectioning connector
  • Engagement solenoid valve EV1 (to engage odd gears 1-3-5)
  • Wiring harness between engagement valve EV1 and the sectioning connector
  • Engagement solenoid valve EV2 (to engage even gears 2-4-R)
  • Wiring harness between engagement solenoid valve EV2 and sectioning connector.

Section of clutch control – gearbox actuators

Description

  1. Clutch control lever on gearbox
  2. Gear shaft (engagement and selection control)

Hydraulic System – Diagram

Hydraulic diagram


Description

  1. Engagement solenoid valve 1
  2. Engagement solenoid valve 2
  3. Selection solenoid valve 3
  4. Selection solenoid valve 4
  5. Clutch solenoid valve
  6. Electric pump
  7. Delivery filter
  8. (Don’t know what is this, please leave a comment if you know)
  9. Check valve
  10. Accumulator
  11. Oil tank
  12. Clutch actuator
  13. Engagement actuator
  14. Selection actuator
  15. Pressure sensor
social position

Share this post