System Description

SYSTEM


VVEL SYSTEM : System Description


INPUT/OUTPUT SIGNAL CHART






SYSTEM DESCRIPTION










VVEL (Variable Valve Event & Lift) is a system that controls valve event and valve lift continuously.
ECM decides the target valve lift according to the driving condition and sends the command signal to the
VVEL control module via ENG communication line.

VALVE LIFT OPERATION





Rotational movement of the drive shaft equipped with eccentric cam is transmitted to output cam via the rocker arm and two kinds of links to depress the intake valve.

1. Link B
2. Output cam
3. Eccentric cam
4. Drive shaft
5. Link A
6. Rocker arm

VARIABLE OPERATION





VVEL control module controls the rotation of the control shaft using the VVEL actuator motor assembly and changes the movement of the output cam by shifting the link supporting point. As a result, valve lift changes continuously to improve engine output and response.

1. Link B
2. Output cam
3. Control shaft
4. Rocker arm