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Home >> Hyundai >> 2020 >> Sonata SEL >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 18 (Exhaust Emission Control System - 1.6L (Except HEV)) >> CVVD (Continuously Variable Valve Duration) System >> Description & Operation >> Description

Description & Operation: Description

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CVVD (Continuous Variable Valve Duration) System is a device to control the optimum open and close timing according to the driving mode by changing the valve opening section.

It is composed of cam shaft, CVVD assembly, and CVVD actuator.

The valve opening time operates in proportion to the RPM of control shaft.

G14524832Courtesy of HYUNDAI MOTOR AMERICA