II-146
WSM Minor Change II Service Engineering Section
3. AI function layout
(1) The idling speed can be achieved 4 seconds after the control lever is set to neutral.
(2) The initial speed is resumed just after the control lever is moved.
(3) The speed remains the same if the control lever is kept at neutral for 2 seconds.
(4) When the safety lock laver is liffted up, engine speed gose down to idle rpm.
25 3 kgf/cm
2
20 3 kgf/cm
2
ON
AI controller
Electric accelerator
CPU
OFF
C7
B1
A2
A3
C5 C6
Acceleration
AI pressure switch signal
Switch operating pressure
AI pressure switch(N.C.)
Output
AI motor
Governor position data
Engine speed data
Pull cable
Engine
Governor sensor
Governor
Engine speed sensor
sensor signal
lever
<Operating chart>
Auto idle
Activated
Neutral
Accelerator
Idle
Engine speed
4 sec.
2 sec.
Time (sec.)
lever position
pressure switch
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