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Home >> Jaguar >> 2019 >> XJR575 >> Repair and Diagnosis >> External Pages >> Different car >> Section 138 (Engine - V6 S/C 3.0L Petrol -- XJ/X351) >> Engine - V6 S/C 3.0L Petrol (G2292098) >> Description And Operation >> System Operation and Component Description >> Variable Camshaft Timing (VCT) >> VCT Operating Ranges

VCT Operating Ranges

WARNING: This page is about a different car, the 2019 Jaguar XJ and 2018 Jaguar XJ. However, it is still accessible from the selected car via links, so may be relevant.
CAMSHAFT VALVE OPENS VALVE CLOSES
Intake 33 degrees before top dead center (BTDC) to 29 degrees after top dead center (ATDC) 197 to 259 degrees ATDC 
Exhaust 236 to 186 degrees BTDC  6 to 56 degrees ATDC 

The system consists of a VCT  unit and a VCT  solenoid for each camshaft. The ECM  controls the system using pulse width modulation (PWM) signals to the VCT  solenoids.

The torsional energy generated by the valve springs and the inertia of the valve train components are used to operate the system.

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