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Home >> Jaguar >> 2014 >> XK Base, 2D Coupe >> Repair and Diagnosis >> External Pages >> Different car >> Section 89 (Engine - V8 S/C 5.0L Petrol) >> Engine (V8 S/C 5.0L Petrol) >> Description And Operation >> Engine >> VCT Operating Ranges

VCT Operating Ranges

WARNING: This page is about a different car, the 2011 Jaguar XKR175, 2011 Jaguar XKR, and 2010 Jaguar XKR. However, it is still accessible from the selected car via links, so may be relevant.
Camshaft Valve Opens Valve Closes
Intake 29 degrees BTDC (before top dead center) to 33 degrees ATDC (after top dead center) 207 to 269 degrees ATDC
Exhaust 244 to 194 degrees BTDC 6 to 56 degrees ATDC

The system consists of a VCT unit and a VCT solenoid for each camshaft. The ECM (engine control module) 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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