System Description
WARNING: This page is about a different car, the 2016 Infiniti QX70. However, it is still accessible from the selected car via links, so may be relevant.
| 1. | VVEL actuator motor | 2. | VVEL control shaft position sensor | 3. | Ball screw nut |
| 4. | Ball screw shaft | 5. | Rocker arm | 6. | Link A |
| 7. | Control shaft | 8. | Eccentric cam | 9. | Drive shaft |
| 10. | Valve lifter | 11. | Intake valve | 12. | Link B |
| 13. | Output cam |
VVEL (Variable Valve Event & Lift) is a system that controls valve event and valve lift continuously. 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. ECM decides the target valve lift according to the driving condition and sends the command signal to the VVEL control module. The VVEL control module controls the rotation of the control shaft using the VVEL actuator motor 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.