Construction Machinery Diesel use "ten bogey"
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(1) Do not do routine inspection before starting Do not use diesel engine for a long time without fault, easy to make people careless, that there is no need for routine inspection before each start of the diesel engine, even if the inspection is only on the diesel , The amount of oil and cooling water to be checked. (2) Do not start the captain operation time Each time the start-up time shall not exceed 10s, two starts should be at least 30s interval, if not start the diesel 3 times, should identify the cause, remove the fault before starting. For a diesel engine with a preheating device, it should be checked whether it has been preheated before starting. If it is not preheated, the glow plug should be turned on and preheated for 40 ~ 50s. Winter season, should also be repeated preheating, otherwise it will start running the captain ran fever and burned, the battery will be due to prolonged large current discharge and shorten the service life. (3) bogey start booming "boom" after the start of the throttle engine, the correct operation should be idle for 3 ~ 5min, on the one hand the body parts can play a preheating effect, to avoid mechanical damage, on the other hand can make the body All parts of the gradual work to achieve lubrication, so as to avoid dry friction damage; to be instructed to the normal instrument, the water temperature exceeds 40 ℃ and then take the load operation. For a turbocharger with diesel engine, should pay attention to avoid damage due to poor lubrication seal. Immediately after starting the big "boom" throttle, the life of the diesel engine will be greatly reduced. (4) bogey start throttle instability Some diesel operators will be operating the experience of gasoline engine moved to the diesel engine, mistakenly believe that both because of low speed and turn off the flame, but also to avoid the large throttle cause mechanical and dry friction damage. In fact, this will also result in mechanical and dry friction damage, but also accelerate the injection pump plunger, rack and governor wear and tear. (5) avoid idling for a long time idling refers to the diesel engine at no load under low speed operation. As the idle speed diesel engine does not output power, fuel supply is small, less heat generated by combustion, machine temperature decreased. If the diesel engine runs at low temperature for a long time, it will increase the viscosity of the oil and increase the frictional resistance. Low-temperature, low-speed fuel atomization and poor combustion, poor fire performance, extended fire retardancy, inadequate combustion, rough work, serious coke. So, should try to avoid idling for a long time. (6) Avoid diesel engine does not observe the operation of the instrument during the work process, should always observe the instructions of the diesel engine is normal, especially the oil temperature, water temperature and oil pressure, or easily lead to cylinder due to carelessness, . (7) Avoid prolonged high-speed operation High-speed operation refers to the diesel engine at no load (or small load), large throttle operation. As the diesel engine output power or output power is small, and a larger fuel supply, long time in the high-speed operation led to increased friction loss of all moving parts, it should try to avoid long-term high-speed operation. (8) Avoid prolonged overload operation Overload operation refers to the diesel engine under heavy load, large throttle, low speed operation. Due to increased fuel supply, speed is too low, easy to make bad combustion and prolonged delay, will lead to overheating diesel engine, and a large number of black smoke. Such as a long time overload, easily lead to increased fuel consumption, polluting the environment, and the high temperature oil thinning, deterioration of oil quality, leading to deterioration of lubricity, accelerated wear and tear between moving parts. High temperatures often lead to cylinder liner ablation, pulling cylinder and other accidents. High speed will make piston ring groove oil bonding, piston ring loss of elasticity, "channeling" oil exacerbated, diesel engine power decreased, easy to die stuck, so that the diesel engine power, lower economy. (9) Do not stop before the big "boom" throttle down before the correct method of operation is: no load in low-speed operation, and then stop. For models with exhaust gas turbocharger, if suddenly shut down, will make turbocharger heat up to about 600 ℃, easily lead to bearing and seal ring burn out. Should be idle before stopping 3 ~ 5min, so that all parts of the diesel engine cooling evenly, to prevent sudden shutdown caused by the local temperature. (10) Do not stop after stopping Do not check the shutdown should check whether the diesel engine leaks, spills and leaks. Especially in winter, when the temperature is below 0 ℃, after the shutdown should also wait for the cooling water temperature dropped to 50 ~ 60 ℃ after the water to drain the net to prevent cracking of the cylinder; for antifreeze plus diesel engine, should also check the antifreeze Is the fluid enough?