Komatsu PC88MR-10 Shop Manual page 257

Auto-deceleration function
1. Pump controller
2. Engine controller
3. Machine monitor
4. Fuel control dial
5. Fuel supply pump
6. Various sensors
7. Oil pressure sensor
8. Oil pressure switch
9. Main pump
10. Control valve
10a. Merge-divider valve
10b. Self-pressure reducing valve
11. PPC lock solenoid valve
Input/output signal
a. CAN signal
b. Oil pressure sensor signal
c. Oil pressure switch signal
d. Throttle signal
e. Fuel supply pump control signal
f. Various sensors signal
Function
When all the control levers are set to "NEUTRAL" positions while waiting for a dump truck or next work,
the engine speed decreases to the control speed automatically to improve the fuel economy and reduce
the noise.
PC88MR-10
(PC88MR-AF60-042-K-00-A)
10 Structure and function
Electrical control system
10-179