Shop manual máy đào HuynDai R170W-9 (Phần 5) - P5.3
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GROUP 3 AUTOMATIC DECELERATION SYSTEMGROUP 3 AUTOMATIC DECELERATION SYSTEM
Main pump
Pilot pump
Engine
ECM
CAN
Main control valve
MCU
Accel dial
Accel dial signal
Normal
CN-16
Emergency
CN-16A
CN-16B
Cluster
Auto idle switch signal
Work
pressure
Travel
pressure
Pressure signal
Auto idle
pilot lamp
4
When all of the work equipment control levers including swing and travel levers are at neutral for 4
seconds, MCU sends throttle command to ECM to reduce the engine speed to 1000
rpm
. If the
control levers are at neutral for 1 minute, MCU reduces the engine speed to 800 rpm. As the result of
reducing the engine speed, fuel consumption and noise are effectively cut down during non-operation
of the control levers.
When the Auto idle pilot lamp is turned off by pressing the switch or any control lever is operated, the
reduced engine speed rises upto the speed before deceleration in a second.
1. WHEN AUTO IDLE PILOT LAMP ON1. WHEN AUTO IDLE PILOT LAMP ON
2. WHEN AUTO 2. WHEN AUTO IDLE PILOTIDLE PILOT LAMP OFF LAMP OFF
The engine speed can be set as desired using the accel dial switch, and even if the control levers are
neutral, the engine speed is not reduced.
※
Auto idle function can be activated when accel dial position is over 4.
Time
Engine rpm
1000 rpm
4 sec
Lever
o
peration
Lever
neutral
Accel dial
set rpm
60 sec
Auto idle
rpm
Low idle
rpm
850 rpm
1sec
14W95MS04
21095MS05
