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The diesel generator set can not be started under ten conditions

Time: 11:06:36, February 14, 2017 source: Author:

The diesel generator set can not be started under ten conditions

 

Before starting the diesel generator set, check to see if the unit is ready. Start the unit when all switches and conditions are feasible. Pay attention to it 10 cases can not be started:

It is forbidden to start a diesel engine without cooling water or adding boiling water. If cooling water is added after starting, the hot cylinder liner, cylinder head and other important parts will burst or deform due to sudden cooling ; The sudden addition of 100 ℃ boiling water to the cold body will also crack the cylinder head and body. It should be added when the water temperature drops to 60 ~ 70 ℃.

Second, do not supply oil as required. Do not put the pressure reducing handle on the diesel engine when starting The fuel supply is conducted after the "working" position, and the throttle handle should be put on the fuel supply position before starting. The harm of not operating according to the regulation is: waste of fuel oil; The excess diesel will wash the cylinder wall, which will worsen the lubrication between piston, piston ring and cylinder liner, and aggravate the wear; The residual oil flowing into the oil pan will dilute the oil and reduce the lubrication effect; Excessive diesel fuel in the cylinder will form carbon deposit if it is not completely burned.

Three don't pull the car to start When the diesel engine is started when the engine oil is viscous, the wear between the moving parts will be intensified and the service life of the locomotive will be reduced.

Four do not change lubricating oil and fuel oil on schedule In the cold weather season, it is difficult to start the diesel engine if the lubricating oil and fuel with low viscosity are not replaced in time.

Five don't bake the oil pan with open fire and start it at the intake pipe. To prevent fire, use slow fire and coal fire to bake the oil pan of diesel engine from a certain distance, and slowly rotate the oil shaft to make the oil evenly heated, so that all parts are lubricated. If the ignition is started at the intake pipe of diesel engine, the ash and hard debris produced by material combustion will be sucked into the cylinder, which will cause the intake and exhaust valves not closed tightly and accelerate the cylinder wear.

Six avoid long-term use of the glow plug, flame preheater glow plug, the heater of the flame preheater are electric heating wires, their power consumption and heat generation are very large, long-term use can damage the battery due to rapid discharge, but also can burn out the heating wire. Therefore, the time of continuous use of the glow plug should not exceed One minute, the time of continuous use of flame preheater should be controlled Within 20 seconds.

Seven do not directly add oil into the cylinder. Adding oil into the cylinder can increase the temperature and increase the sealing pressure of the diesel engine, but the oil can not be completely burned, which is easy to produce carbon deposition, which weakens the elasticity of the piston ring and reduces the sealing performance of the cylinder ; In addition, it will accelerate the wear of cylinder liner, which will reduce the power of diesel engine and make it more difficult to start. Therefore, oil can not be directly added to the cylinder.

Don't pour gasoline into the intake pipe directly The burning point of gasoline is lower than that of diesel oil, and it burns earlier than diesel oil. Therefore, if gasoline is directly injected into the intake pipe, it will make the engine work rough and produce strong cylinder knocking phenomenon. In serious cases, the engine can also reverse.

Nine avoid long-term continuous start-up of diesel engine engine engine is in the case of low voltage, high current, long-term use will damage the battery. Its continuous working time shall not exceed 5 seconds; If it fails to start at one time, it should be started again every 15 seconds.

Ten taboos start running at high speed When the diesel engine is just started, the temperature of lubricating oil is low and the fluidity is poor. If the diesel engine runs at high speed immediately, it is easy to cause rapid wear of moving parts due to lack of lubrication, and in serious cases, Bush burning and axle holding will occur.

 

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