INTAKE-AIR SYSTEM [13B-MSP]
01-13–10
2009 Mazda RX-8 Serv
i
ce H
i
ghl
i
ghts (3452–1U–08C)
Rev
i
sed 11/2008 (Ref
.
No
.
R321/08)
VARIABLE FRESH AIR DUCT (VFAD) SOLENOID VALVE FUNCTION [13B-MSP]
id0113z3662500
W
i
th VFAD
x
Sw
i
tches pressure (
i
ntake man
i
fold vacuum or BARO) appl
i
ed to the VFAD actuator accord
i
ng to a s
i
gnal from
the PCM
.
End Of S
i
e
VARIABLE FRESH AIR DUCT (VFAD) SOLENOID VALVE CONSTRUCTION/OPERATION [13B-MSP]
id0113z3662600
W
i
th VFAD
x
Composed of a soleno
i
d co
i
l, spr
i
ng, plunger, and f
i
lter
.
Energ
i
zed
x
When the soleno
i
d co
i
l
i
s energ
i
zed, the plunger
i
s pulled back
.
Pull
i
ng the plunger back opens the passage
between ports A and B
.
Due to th
i
s, BARO
i
s appl
i
ed to the actuator
.
De-energ
i
zed
x
Passage of port A
i
s closed by the react
i
on
force of the spr
i
ng, and the passage between
ports B and C
i
s opened
.
Due to th
i
s,
i
ntake
man
i
fold vacuum
i
s appl
i
ed to the actuator
.
End Of S
i
e
SOKYU_NG
:
VARIABLE FRESH AIR DUCT ACTUATOR
VARIABLE FRESH AIR DUCT (VFAD) ACTUATOR FUNCTION [13B-MSP]
id0113z3663300
W
i
th VFAD
x
Opens and closes the VFAD valve
.
End Of S
i
e
VARIABLE FRESH AIR DUCT (VFAD) ACTUATOR CONSTRUCTION/OPERATION [13B-MSP]
id0113z3663400
W
i
th VFAD
x
A d
i
aphragm des
i
gn has been adopted
.
x
Normally, the rod
i
s pushed by the force of the
spr
i
ng, open
i
ng the VFAD valve
.
When
i
ntake
man
i
fold vacuum
i
s appl
i
ed to the d
i
aphragm
chamber, the rod
i
s pulled, clos
i
ng the VFAD
valve
.
End Of S
i
e
SOKYU_NG
:
AUXILIARY PORT VALVE MOTOR
AUXILIARY PORT VALVE (APV) MOTOR FUNCTION [13B-MSP]
id0113z3663100
x
Dr
i
ves the APV motor to open or close the APV accord
i
ng to a s
i
gnal from the PCM
.
End Of S
i
e
AUXILIARY PORT VALVE (APV) MOTOR CONSTRUCTION/OPERATION [13B-MSP]
id0113z3663200
x
The pos
i
t
i
on sensor
i
s bu
i
lt
i
nto the APV motor
.
x
The motor
i
s dr
i
ven accord
i
ng to an operat
i
on
s
i
gnal from the PCM
.
x
The motor dr
i
v
i
ng force
i
s transm
i
tted to the dr
i
ve
gear, counter gear, shaft, and arm, thereby
open
i
ng or clos
i
ng the APV
.
End Of S
i
e
B
C
A
ar8uun00000094
RETURN
(OPEN)
PULL
(CLOSE)
VFAD VALVE
VFAD
ACTUATOR
ar8uun00000096
APV
OPEN
CLOSE
COUNTER GEAR
APV MOTOR
DRIVE GEAR
SHAFT
ARM
ar8uun00000095
Содержание 2009 RX-8
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