L322 Range Rover System Description and Operation
ENGINE MANAGEMENT SYSTEM – V8
DESCRIPTION AND OPERATION 18-2-41
VCC System
Introduction
The variable intake valve timing system on the V8 is known as Variable Camshaft Control (VCC).
The V8 VCC system is a new system providing stepless VCC functionality on each intake camshaft. The system is
continuously variable within its range of adjustment providing optimised camshaft positioning for all engine operating
conditions.
While the engine is running, both intake camshafts are continuously adjusted to their optimum positions. This
enhances engine performance and reduces exhaust emissions.
Both camshafts are adjusted simultaneously within 20
°
(maximum) of the camshafts rotational axis.
1 VCC transmission unit
2 VCC control solenoid valve
This equates to a maximum span of 40
°
crankshaft rotation. The camshaft spread angles for both banks are as
follows.
M18 0818
20
20
1
2
1
2
