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Home >> Jaguar >> 2017 >> XJR L >> Repair and Diagnosis >> External Pages >> Different car >> Section 21 (Engine - V6 S/C 3.0L Petrol -- XJ/X351) >> Engine - V6 S/C 3.0L Petrol >> Description And Operation >> System Operation And Component Description >> Variable Camshaft Timing >> VCT Operating Ranges

VCT Operating Ranges

WARNING: This page is about a different car, the 2017 Jaguar XJ, 2016 Jaguar XJ, 2015 Jaguar XJ, 2014 Jaguar XJ, and 2013 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 BTDC (before top dead center) to 29 degrees ATDC (after top dead center) 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 PWM (pulse width modulation) 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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