General Studies · Variable Valve Timing
What is the primary mechanism by which conventional cam-phasing Variable Valve Timing (VVT) systems are actuated?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Linear electromagnetic solenoids directly hitting the valve stem.
- 2High-pressure pneumatic systems.
- 3Hydraulic actuators powered by engine oil pressure.✓
- 4Purely mechanical centrifugal linkages.
Correct answer
Hydraulic actuators powered by engine oil pressure.
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