WP13 Diesel Engine Series Operating Manual
10
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The operating personnel should understand the following characteristics of the diesel engine:
①
In time of the maximum torque, there will be lower fuel consumption; when the speed
increases, the fuel consumption will rise.
②
The torque will achieve its best value when the engine is working at its medium speed range
(1200-1600 r/min).
③
The engine power will increase as the speed increases and reach its rated power at the rated
speed.
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Considerations for operation in a cold environment:
①
Fuel: the diesel fuel of different grades should be selected in accordance with the difference of
outdoor temperature.
②
Lubricating oil: the lubricating oil of different viscosity should be selected according to the
season changes.
③
Coolant: add antifreeze additive in the cooling system and select the coolant different in grade
and quantity in accordance with changes of the outdoor temperature.
④
Starting: an auxiliary starter can be used in winter when necessary. After started, the engine
shall never be made to work at its high speed before the oil pressure and water temperature has
become normal.
⑤
Before starting in cold season, you should check the electrolyte level, viscosity and unit
voltage of the battery, and if the engine is kept idle for long at a very low temperature, the
battery should be removed and stored in a warm room.
⑥
Parking: when parking in a cold climate, you should first remove its load, then let it idling for
1-2 minutes, and then stop it until the water temperature and oil temperature have dropped, but
after stopping, the engine shall never have its coolant with antifreeze additive drained. You
must open the discharge valves or water plugs on the body, engine oil cooler cover, radiator
and water inlet pipe to drain the coolant with no antifreeze additive contained to prevent the
engine cracking due to frost.
Chapter V Regular Inspection and Maintenance of the Diesel Engine
5.1 Daily Maintenance and Services
Check its coolant, oil and fuel levels; grease any part if needed; check whether there is oil, gas or
water leakage; check whether the external parts and accessories are connected and fastened reliably;
check whether the fan and belt are rather tensioned or loose; check the oil pressure and water
temperature of the diesel engine; check whether the diesel engine has its exhaust normal in
temperature, color, sound and vibration, and whether its speed is stable.
●
Check the coolant level and water temperature
Observe the coolant level through the glass eye hole, and if there is insufficient coolant, open the
water filler cover to add more coolant.
Note: To open the water filler cover, you must first press the exhaust button so as to prevent
personal injuries due to hot coolant when the engine is still hot enough.
