Operation and Maintenance Manual and User Service Guide for Industrial Power WP10 Series Diesel Engine
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a.
If the diesel engine is not in use, do drain the water in the fresh-water
cooler, which otherwise is harmful to parts in fresh-water cooler,
especially in winter.
b.
The fresh-water cooler should be checked each quarter by smoothing
the pipeline, removing the dirt and replacing the zinc slab.
c.
Before reinstalling the fresh-water cooler already cleaned, hydraulic test
should be conduct. As a result, there should be no leakage, after it is
pressed with pressure of 0.4MPa for 30min.
5.11 Use and maintenance of air cooler
Air cooler for WP10 series diesel engine is of tube-and-fin heat exchanger of
which principle is that coolant flowing in tube could dissipate the thermal of
supercharged air via the tube wall. Therefore, that can reduce the intake
temperature of diesel engine, increase the intake density and increase the
power of diesel engine.
a.
If the diesel engine is not in use, do drain the water in the air cooler,
which otherwise is harmful to parts in air cooler, especially in winter.
b. The air cooler should be checked each quarter by smoothing the pipeline,
removing the dirt and replacing the zinc slab.
c.
Before reinstalling the air cooler already cleaned, hydraulic test should
be conduct. As a result, there should be no leakage, after it is pressed
with pressure of 0.4Mpa for 30min.
5.12 Use and Maintenance of electronic governor
The electronic governor of WP10 series diesel engine consists of speed
controller, electromagnetic executor, speed sensor, rated idling switch,
trimmer potentiometer, control power supply and power switch. The
principle will be explained as shown: idea speed of engine is determined by
the speed setting potentiometer and speed trimmer potentiometer. Whereas,
the actual speed of engine is determined by the speed sensor mounted on the
root of flywheel teeth. The signal outputted by the speed sensor is of AC
voltage signal with frequency in direct proportion to the speed. This signal
can be converted into the DC voltage via the F/V circuit, and then compared
to the set value of speed. As a result, the deviation value of speed can be
obtained. This deviation value is operationally amplified by the PID
Ⅰ
governor, which creates the fuel-supply position value, namely steady-state
output position index of executor. After this index of executor is compared
with the actual position of executor, the actual position deflection can be
