Mitsubishi MOTORS Outlander 2007, Service Manual, Technical Information & Body Repair Manual Data

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MITSUBISHI INNOVATIVE VALVE TIMING AND LIFTING ELECTRONIC CONTROL
SYSTEM (MIVEC)
ZK602599AA00
Intake valve
Exhaust valve
Camshaft
Piston arm assy
Rocker arm assy
T lever assy
Rocker arm assy
Rocker arm shaft
Rocker arm shaft
ZK602601
High lift cam
Middle lift cam
Low lift cam
Plug
T-lever
Wing
AA00
Intake rocker arm for
middle lift cam
Intake side
Intake rocker arm for
low lift cam
Switch-over oil pressure
(lubricating oil)
Lubricating oil
Exhaust side
Exhaust rocker arm
Switch-over
piston
MIVEC has an additional switching system on the two
intake valves in the conventional SOHC 4 valve
engine. This switching system has two cams for the
low mode having a difference between the valve-lifts
and for the high mode keeping both valve lifts high.
In the range of the low engine speed, the flow within
the valves is enhanced by the difference between the
valve-lifts. Also, the stabilization of the combustion is
designed for low fuel economy, low exhaust gas and
high torque. At high engine speeds, the high output
due to the increment in the intake air amount is
reached by increasing the open valve period and the
lift.
A T-lever moves following the high lift cams and is
arranged between the high lift cam and two rocker arms, in addition to the low & middle lift cams and two
rocker arms that drive the two intake valves
respectively.
In the range of the low engine speed, the low and the
middle lift cams drive each valve respectively because
the wing of the T-lever moves freely. At high engine
speeds, the oil pressure moves the switch-over piston
within the rocker arm. The T-lever reaches the rocker
arm and pushes it, and then the high lift cam lifts both
valves.
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