DV11
Operation and Maintenance
167
Commissioning and Operation
Printed in Mar. 2005 PS-MMA0608-E1A
4.3.1. Pressure of lubricating oil
The normal pressure comes up to 1.0 ~ 3 kg/cm
2
at idling and 3 ~ 5 kg/cm
2
(3.0 ~
4.9 bar) at maximum speed. If the pressure fluctuates at idling or does not reach up
to the expected level at high speed, shut down the engine immediately and check
the oil level and the oil line leakage.
4.3.2. Temperature of cooling water
The cooling water temperature should be 85
°
C in normal operating conditions.
Abnormally high cooling water temperature could cause the overheating of engine
and the sticking of cylinder components. And excessively low cooling water
temperature increases the fuel consumption, accelerates the wears of cylinder liners
and shortens the engine life-time.
4.3.3. Over-speed control
The electric control unit (ECU) have a system of preventing the engine over-speed
among many system. This system involve many function of fuel flow control, ignition
time delay, fuel shut off, and ignition shut off etc.
These values are set up in advance in the memory of the ECU, and should not be
revised by user.
This engine with ECU should not be run at the over-speed rating speed for a regular
time, if the vehicle is speeded, the fuel and ignition is shut off until the engine speed
is up to the proper level.
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