VUE AWD V6-3.5L (2007)
the operation of the oil control solenoid. The rocker arm oil control solenoid (1) and the oil pressure switch (3) are located near the engine oil filter (2)
on the lower right rear corner of the engine.
System Operation
The rocker arm oil control system is an electronically controlled, hydraulically operated system that provides good low speed torque and high speed
horsepower. The engine control module uses an electronic solenoid to control the flow of oil to the rocker arms. In order to determine when to transition
from low to high speed operation, the control module relies on the following information:
*
Engine speed
*
Engine load
*
Engine operating temperature
*
Vehicle speed
Low-Medium Speed Cam Operation
1 - Low-Medium Speed Intake Rocker Arms
2 - High Speed Intake Rocker Arm
3 - Piston Spring
4 - Synchronizing Pistons
5 - Low-Medium Speed Cam Lobes
6 - Camshaft
7 - Intake Valves
At engine speeds below 4,400 RPM, the low-medium speed cam lobes (5) open and close the intake valves (7) thru the low-medium speed rocker arms
(1). During low-medium speed operation, the rocker arm oil control solenoid is OFF and there is no oil flow to the rocker arms. Without oil flow there is
no oil pressure, and the piston spring (3) keeps the synchronizing pistons (4) at rest in their bores within the three rocker arms (1 and 2). This allows the
high speed rocker arm (2) to move independently of the two low-medium speed rocker arms (1) while following the high speed cam lobe.
High Speed Cam Operation
