HMB

【 CTP carter 】 Don't do these things in the process of excavator engine starting

by:HMB     2021-01-26
Excavator engine incorrect startup cause excavator scrap fault, the following is a maintenance division according to years of experience, share of the ten points for attention during the excavator engine starting. Or join a, prohibited without coolant boiling water after start engine start to add cooling fluid, can make the hot cylinder liner, cylinder head and other important components due to the sudden encounter cold cracking or deformation; To the cold snap in body plus 100 ℃ hot water, can also be induced crack cylinder head and the body, should stay when coolant temperature dropped to 60 ~ 70 ℃ and add. Second, banned carts to start the engine in the case of a cold car engine oil viscosity carts starting, exacerbate between each moving parts wear and tear, thus reduce the service life of the locomotive. Three, ban on schedule in with oil and fuel in the winter, if not timely change with low viscosity oil and fuel, it is hard to start engine. Four, forbid fire oil sump and the inlet pipe fire start to prevent fire, application soft fire, coal fire in a certain distance baking engine oil pan, slowly rotate the crankshaft at the same time, let the oil evenly heat, make each part have been lubrication. If a fire starting in the engine intake pipe, can make the material burning ash and hard sundries sucked into the cylinder, intake and exhaust door closed lax caused to speed up the cylinder wear. Five, prohibited to use for a long time the electric plug, flame preheater electro-thermal plug, the flame preheater of the heating element for heating wire, its power consumption and heat output is large, use for a long time can damage because of rapid discharge of battery, at the same time also can burn out heating wire. So the glow plug each continuous use time not more than 1 min, flame preheater each continuous use time to control within 20 s. Six, prohibited to add oil to add oil cylinder cylinder directly, can have the effect of sealing pressurization warming, is advantageous for the diesel engine cold start, but cannot complete combustion engine oil, easy to produce carbon deposit, lessened the flexibility of piston ring, cylinder sealing performance; In addition, will also accelerate the wear of cylinder liner, resulting in a decline in the power of the engine, make it more difficult to start, so can't directly to add oil cylinder. Seven, banned direct petrol injection intake pipe gas ignition point lower than diesel, before diesel combustion. So directly to the gas inlet pipe, and can make the engine work rough and produces strong knocking phenomenon, serious when still can happen engine inversion. Eight, banned long time continuous start engine starter is under the condition of the low voltage, high current work, use for a long time will damage the battery. The continuous working time may not exceed 10 s. Not a starter, should every 15 s to start again. Nine, ban just start high speed engine has just started, the oil temperature is low, the liquidity is poor, high-speed operation immediately, easy to cause the movement parts sharply due to lack of lubrication and wear, serious when still can happen tile burning shaft. Ten, banned the engine at full capacity when suddenly stop engine high speed when the discharge pressure will be through the turbo to squeeze the fresh air into the engine allows fuel to burn adequately, produce strong power output, and turbocharged and therefore achieve high temperature need lubricating oil cooling, if the opportunity to a sudden stop makes oil instantaneous stops flowing, not timely cooling heat dissipation of the turbocharger, caused the turbocharged under very high degree of diesel turbocharger plugging and damage. At the same time also involves the fittings such as hydraulic system fault and damage.
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