Operation and Maintenance Manual of WP13C Series Diesel Engines
Weichai Power Pursuit of Excellence
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5.3 Starting of diesel engine
Turn on the instrument power switch, turn the accelerator handle to the full-open position, and press the
starting button, if the engine cannot start within (5~10) sec, repeat the aforementioned procedures after
1min. If the engine still cannot be started after continuously 3 times, stop starting, find out the cause and
eliminate and then restart. After starting, release the button immediately, and pay attention to the instrument
readings, the oil pressure gauge shall display the pressure. Please pay attention not run the cold engine at
high speed, run it for a period of time at idle speed but not too long.
5.4Stopping of Diesel engine
Before stopping, unload first, slow down the engine speed to (600~1000) r/min, run several minutes and
then turn the shutdown handle to stop. Turn off the instrument power. In case of emergency stopping,
immediately turn the shutdown handle to the stop position, or disconnect the fuel delivery pipe of fuel
injection pump or plug the inlet of air filter.
5.5Operation precautions
a. After starting the diesel engine, idle running the engine for several minutes, then speed up to
(1000-1200) r/min and increase some load. When the outlet water temperature is higher than 60
℃
and oil temperature is higher than 50
℃
, run the engine at full load. Increase the load and the speed
gradually to avoid sharp loading and sharp unloading
b. During the 60h running-in period of diesel engine, run it with medium load and below.
c. Do not run at idle speed for a long time, or it may cause faults such as oil leaking.
d. During normal operation of diesel engine, continuous running at rated power and rated speed is
allowable. However when run at 103% of rated speed and 110% of rated power, it is allowed to run
the engine for 1h every 12h. After unloading, idle running the engine for (1~2) min and then stop it.
e. Parameters to pay attention to and check positions during operation:
Pressure of main lubricating oil channel: (350~550) kPa.
Oil temperature in the oil sump:
≤
110
℃
.
Coolant outlet temperature: (80+5)
℃
, not to exceed 95
℃
.
Exhaust temperature after turbine:
≤
580
℃
Intake air temperature after intercooler: (55
±
5)
℃
.
Check the exhaust color to identify the working quality of fuel injector and load conditions, if the
smoke color is serious, please stop the engine to check.
Pay attention to check the diesel engine for leakages of water, gas or oil. In case of any, please stop
and eliminate.
f. The operator shall understand the following features of diesel engine:
-- When the engine runs at the medium speed range of( 60%~90% )of rated power and speed, the fuel
economy is best;
-- The engine power will increase along with the speed, and the rated power is reached at the rated
speed.
-- Check and maintain the diesel engine according to the regular check and technical maintenance
intervals.
5.6Diesel engine operations in winter
a. Fuel: select diesel fuels of different grades according to outdoor temperatures in winter;
b. Lubricating oil: select lubricating oil of different viscosity according to seasons;
c. Coolant: add antifreeze additives to the cooling system, select coolant of different grades and
