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Home >> Kia >> 2020 >> K900 >> Repair and Diagnosis >> Engine Mechanical >> Auxiliary Emission Control Systems >> Exhaust Emission Control System >> CVVT (Continuous Variable Timing) System >> Description And Operation >> Description >> [Intermediate Lock CVVT]

[Intermediate Lock CVVT]

It increases the retarded amount compared to the default state to expand the operating range of the variable valve timing system.

The cam phase is fixed mechanically so that it is locked at the middle position.

G13143231Courtesy of KIA MOTORS AMERICA, INC.
→Effect
Improves fuel efficiency by approx. 1.7%.
Expands the intake CVVT operating range.
(Increases the retarded amount by up to 30° compared to the default state.)
↓
LIVC (Late Intake Valve Close)
↓
  1. Improves fuel efficiency by reducing pumping loss.
  2. Improves knocking characteristics by reducing compression ratio.
G13143232Courtesy of KIA MOTORS AMERICA, INC.

Default position: Middle
CVVT operates in advanced/retarded directions.