CONTROL SYSTEM
01–40–16
VFAD solenoid valve (13B-MSP (High Power))
•
At an engine speed of less than 5,500 rpm, the VFAD solenoid valve turns off and feeds intake manifold
vacuum to the actuator (valve closes).
•
At an engine speed of Approx. 5,500 rpm or
more, the VFAD solenoid valve turns on and
feeds BARO to the actuator (valve opens).
APV motor (13B-MSP (High Power))
•
When the following conditions are met, a duty signal is sent to the APV motor, the APV gradually opens. If an
APV-open condition is not met, a minus duty signal is sent to the APV motor, reversing the motor and closing
the APV.
APV-open condition
— Engine speed: Approx. 6,250 rpm or more
— ECT: Approx. 20
°
C {68
°
F} or more
•
The APV motor has a built-in APV position sensor that monitors the APV position.
•
The duty ratio and the operation time when the
APV valve is open are as shown in the figure.
•
When the opening conditions are not met, the
APV sends a reverse duty signal while the APV
opens.
•
The duty ratio and the operation time when the
APV closes are as shown in the figure.
VDI solenoid valve
•
At a VDI valve operation engine speed or more,
the VDI solenoid valve turns on and feeds intake
manifold vacuum to the actuator (valve opens).
VDI valve operation engine speed
••••
13B-MSP (Standard Power): Approx. 5,800
rpm or more
••••
13B-MSP (High Power): Approx. 7,300 rpm
or more
End Of Sie
5,500 rpm
OFF
ON
ENGINE
SPEED
VFAD
SOLENOID
VALVE
VFAD VALVE
OPEN
CLOSE
CHU0140S015
100 %
12 %
ABOVE
1.5 V
0.3
APV
OPEN
CLOSE
APV
MOTOR
DUTY RATIO
APV
POSITION
SENSOR
(s)
CHU0140S012
100 %
12 %
0.4
30
0 %
APV
APV
MOTOR
DUTY RATIO
APV
POSITION
SENSOR
(s)
ABOVE
1.5 V
OPEN
CLOSE
CHU0140S013
OFF
ON
VDI VALVE OPERATION
ENGINE SPEED
VDI SOLENOID
VALVE
VDI VALVE
OPEN
CLOSE
CHU0140S014
Содержание 2004 RX-8
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