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STRUCTURE, FUNCTION AND MAINTENANCE STANDARD
7. Engine automatic warming-up, overheat prevention function, turbo protect function, split
injection function
Function
•
If the water temperature is low, this automatically
raises the engine speed to warm up the engine
after it is started. In addition, if the water temper-
ature rises too high during operations, it reduces
the load of the pump to prevent overheating.
•
To protect the turbocharger bearing during cold
weather, the engine speed is kept below the
fixed speed when the engine is started. In addi-
tion, to improve the starting ability, a small
amount of fuel is injected two or more times be-
fore the main injection.
10-158
MACHINE CONTROL SYSTEM
PC600, 600LC-7
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