INTAKE-AIR SYSTEM
01–13–7
01–13
When Operation Conditions Are Met. (Variable Intake Air Shutter Valve Is Open)
• The variable intake air shutter valve is open.
• Under this condition, the effective intake manifold
length is from the intake valve to the dynamic
chamber (B—C). The intake air inertia effect is
obtained at high engine speeds due to this
shortened intake air pipe, increasing intake
airflow amount in the cylinder, and higher torque
at high engine speeds is obtained.
End Of Sie
VARIABLE INTAKE AIR SOLENOID VALVE FUNCTION [LF]
E5U011318742N01
• Switches the intake manifold vacuum passage between the dynamic chamber and the variable intake air
shutter valve actuator.
End Of Sie
VARIABLE INTAKE AIR SOLENOID VALVE CONSTRUCTION/OPERATION [LF]
E5U011318742N02
Construction
• Mainly composed of the solenoid coil, spring, and plunger.
Operation
Energized
• The solenoid coil magnetizes, pulling the plunger. The passage between A and B ports opens due to the
plunger being pulled, and intake manifold vacuum is applied to the variable intake air shutter valve actuator.
Not energized
• The intake manifold vacuum passage is blocked, and the passage between ports B and C opens,
depressurizing the variable intake air shutter valve actuator.
End Of Sie
VARIABLE
INTAKE AIR
SHUTTER
VALVE OPEN
DYNAMIC
CHAMBER
C
B
E5U113ZS5005
SOLENOID COIL
PLUNGER
SPRING
ENERGIZED
PORT A
PORT B
NOT ENERGIZED
PORT B
PORT C
E5U113ZS5006
To Next Page
Loading...
