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周六日休息
DATE：2019/6/24 14:22:46 HITS：846
Low winter temperatures, diesel engine deterioration of working conditions, difficulty in starting, adverse thermal conditions, various mechanical wear, exacerbated by the increase in fuel consumption, such as the use of improper maintenance will greatly shorten the life. Then how to use it correctly?
1, the choice of a small diesel engine oil viscosity. Low temperatures, the viscosity of the engine oil is increased with decreasing temperature, resulting in deterioration of the oil flow. In poor the initial lubrication conditions start the diesel engine, the frictional resistance, difficulty in starting, bush-burning may even appear to hold the shaft accident, and therefore should be replaced before winter low viscosity oil.
2, the choice of a low pour point, good fluidity diesel. Low diesel viscosity increase, fluidity, poor atomization, so that the deterioration of the combustion process, the engine startup, power, economy decrease. Therefore, conditions, should be used in lower pour point diesel principle is generally used diesel pour point should be about 5 ℃ lower than the ambient temperature is appropriate.
3, Before winter, you must clean diesel engine cooling system is intact, check the drain switch, the thermostat is working properly. Clear the scale of the water jacket cooling circuit to prevent furring excessive influence of heat, or clogged drain switch, different water without a net Donglie body accident; replacing damaged or in a bad state drain switch, easy to turn on the water quickly and thoroughly; Festival thermostat is in good working order to prevent diesel engine run at low temperature for a long time exacerbated by mechanical wear.
4, the correct start. Low winter temperatures, poor atomization of diesel, oil viscosity, the battery capacity is insufficient, difficulty in starting the engine, and therefore should take appropriate measures, such as filling the hot water preheat oil, can not start without preheating force, otherwise it will exacerbate the wear of the various components. The data indicate that, at minus 18 ℃ cold start a diesel engine, cylinder wear equivalent vehicles 250km amount of wear. In the life cycle of a diesel engine, due to the cold start of the cylinder caused by wear of the 35% of the total amount of wear. Some drivers the easy way to take the the trailer start of method start the engine, it is extremely wrong. Because the diesel engine without preheating, oil viscosity, the the trailer starting fire will lead to various parts due to poor lubrication conditions, increasing the degree of wear.
5, after the engine starts, should be medium-speed operation for about 10 minutes, when the water temperature is above 40 ℃, the vehicle re-start driving, not eager to start; Do not rush to turn off the engine when the car is suspended, should idle for a while, when the water temperature drop to 40 ℃ after turn off and then turn on the water, to prevent the water so that the water temperature is too high cylinder head, cylinder block cracks or deformation due to the cold case of too fast. Water when the water temperature is too low may not be discharged occurred the frozen wall plug waterway, resulting in water put net. Open the radiator cap should be in the water, turn on the water, should again start the diesel engine run for 2-3 minutes, rely on body temperature drying throughout the residual water to prevent the parts nipped accident occurs due to residual water.
