Remember to operate the generator set six 'No'

We all know that when operating the generator set , operators must develop good operating habits and consciously abide by operating specifications, so as to extend the service life of the generator set and improve working efficiency. However, in the actual operation, many operators still have bad habits, so Haixing summarized six of them for comparison.

(1) Do not run the diesel engine with load before starting the cold machine
. When the diesel engine is started, due to the large viscosity and poor fluidity of the oil, the oil pump is insufficient oil supply, and the friction surface of the machine is poorly lubricated due to oil deficiency, resulting in rapid wear and even failures such as cylinder pulling and tiles burning. Therefore, after the diesel engine is started, it should run at idle speed and heat up, and then run with load when the standby oil temperature reaches above 40℃; the machine should be in the low-speed gear at the start and drive in each gear for a period of mileage until the oil temperature is normal and the oil supply is sufficient, then it can turn to normal driving.

(2) Do not operate when the diesel engine is insufficient when the engine oil is insufficient
. At this time, the insufficient oil supply will cause insufficient oil supply on each friction pair surface, resulting in abnormal wear or burns. To this end, it is necessary to ensure sufficient oil before the machine starts and during the diesel engine operation to prevent cylinder pulling and tile burning failures due to lack of oil.

(3) Do not stop the machine with a load or stop immediately after suddenly removing the load.
The circulation of the cooling system water stops after the diesel engine is turned off. The heat dissipation ability is sharply reduced and the heated parts lose cooling, which can easily cause the cylinder head, cylinder liner, cylinder block and other parts to overheat, cause cracks, or cause the piston to over-expand and get stuck in the cylinder liner. On the other hand, the diesel engine does not cool down at idle speed when it is shut down, which will cause insufficient oil on the friction surface, and when the diesel engine starts again, it will aggravate wear due to poor lubrication. Therefore, the diesel engine should be unloaded before shutting down, and the speed should be gradually reduced and the no-load operation should be carried out for several minutes.

(4) Do not hit the accelerator hard after the colder starts
. If the accelerator is hit hard, the speed of the diesel engine will rise sharply, which will cause some friction surfaces on the equipment to wear violently due to dry friction. In addition, the piston, connecting rod and crankshaft reception forces change greatly when the throttle is hit, causing violent impacts and easily damage the machine parts.

(5) Do not operate the diesel engine when the cooling water volume is insufficient or the cooling water or engine oil temperature is too
high, which will reduce its cooling effect. The diesel engine will overheat due to inability to obtain effective cooling; the oil temperature of the cooling water and engine oil will also cause the diesel engine to overheat. At this time, the cylinder head, cylinder liner, piston assembly and valve are mainly subjected to high heat loads, and their mechanical properties such as strength and toughness drop sharply, causing the deformation of parts to increase, reducing the fitting gap between parts, accelerating wear of the machine parts, and in severe cases, cracks and machine parts will also cause failures such as severe cases. Excessive cooling water and oil temperature will accelerate the aging, deterioration and burning of the engine oil, and the viscosity of the engine oil will decrease, and the lubrication conditions of the cylinder, piston and main friction pairs will deteriorate, resulting in abnormal wear. Overheating of the diesel engine will also worsen the combustion process of the diesel engine, causing the injector to work abnormally, poor atomization, and increase carbon accumulation.

(6) Do not operate the diesel engine with the cooling water and engine oil temperature too low.
During the operation of the diesel engine, the cooling water temperature will be too low, and the temperature of the cylinder wall will drop accordingly. The water vapor generated by combustion condenses into water droplets, contacts with the exhaust gas to form acidic substances, adheres to the cylinder wall, and produces corrosion and wear. Practice has proved that when diesel engines are often used at a cooling water temperature of 40℃~50℃, their parts wear are several times larger than normal operating temperature (85℃~95℃). At this time, when the water temperature is too low, the temperature in the cylinder is low, and the ignition period of the diesel engine will be prolonged. Once it catches fire, the pressure will increase rapidly, and the fuel oil of the diesel engine will be rough, which will easily cause mechanical damage to the parts. The diesel engine operates at a low temperature of cooling water for a long time. The gap between the piston and the cylinder liner is large, and the cylinder has been knocked, and vibration has occurred, causing cavitation of the cylinder liner. The engine oil temperature is too low, the oil viscosity is large, the flowability is poor, and the amount of oil in the lubricating area is insufficient, which makes the lubrication worse, causing increased friction pair wear and shortening the service life of the diesel engine.

These six 'don'ts' are summarized by Haixing's experienced staff and are of great significance in actual operation. Everyone must carefully compare and learn so that they can further proficiently operate the generator set, ensure that they do not cause harm to the generator set due to misunderstandings, and the operator's level will also be improved.