Abnormal noise from the generator set may be a sign of problems within the equipment. How do we determine the source of the noise and identify the faulty component? Haixing has sorted out the characteristics and simple causes of several common component noises for your convenience. copyright by: www.hxdlkj.com 1. Exhaust noise: Exhaust is a high-temperature, high-speed pulsating airflow noise. The main components of exhaust noise are as follows: low-frequency pulsating noise caused by periodic exhaust smoke, The gas column resonance noise in the exhaust pipe, the Helmholtz resonance noise of the cylinder, and the noise generated when the high-speed airflow passes through the valve gap and curved pipes. 2. Mechanical noise: Generally speaking, mechanical noise is mainly caused by the vibration or mutual impact of the moving parts of the engine caused by the periodic changes in gas pressure and motion inertia force during operation. 3. Burn

Recently, many netizens have consulted the staff of Haixing about the acceptance of generator sets. Some people purchased generator sets and did not know where to inspect the equipment after receiving the equipment. Below, Haixing will briefly summarize a few diesel generator set acceptance indicators for your reference. copyright by: www.hxdlkj.com The following acceptance standards are only for your reference when accepting the unit after purchase: 1. Diesel consumption should comply with the specified standards; 2. Cylinder pressure and oil pressure should comply with the regulations of each model. technical standards; 3. After starting the diesel engine, the speed should be kept uniform when running at idle speed, medium speed and rated speed; 4. Sufficient power. After overhaul, the power of the diesel engine should be above 95% of the rated power; 5. Smoke exhaust is normal. When the diesel engine is idling, it is allowed

If our generator equipment is not treated in time after large-scale water intrusion, it will cause great damage to the equipment and accelerate the occurrence of rust and corrosion. Therefore, Haixing recommends that you understand the relevant routine maintenance methods. 1． Rinse the surface of the diesel engine with water to remove dirt and debris, and then use metal cleaner or washing powder to remove oil stains on the surface. 2． Support one end of the diesel engine so that the oil drain part of the oil pan is at the lowest position. Unscrew the oil drain plug and pull out the oil dipstick to allow the water in the oil pan to flow out on its own. When it reaches the point where the oil is about to be drained, the oil should be allowed to drain slightly. Drain some of it together with water and screw on the oil drain plug. 3. Remove the air filter, remove the filter upper shell, take out the filter element and other components, remove the water in the filter, and clean the parts with metal cleaner or diesel. The filter piece is made of plastic foam. It should be washed with washing powder or soapy water (gasoline is prohibited), then rinsed with clean water and dried.

Oil leakage from generator sets occurs from time to time. Haixing briefly analyzed the parts prone to oil leakage and the causes, hoping to help everyone solve the problem. 1. The quality of purchased or homemade paper pads does not meet the requirements, such as insufficient thickness, improper storage, wrinkles and deformation, or carelessness during assembly, dust and impurities, which are all causes of oil leakage. copyright by: www.hxdlkj.com 2. Excessive oil pressure may also cause oil leakage at the static joint surface. 3. The quality of the static joint surface itself is mainly determined by the accuracy of the processing equipment itself and the storage and transportation conditions. If the equipment has high precision, the flatness and roughness of the static joint surface can meet the drawing design requirements, and care is taken to prevent collisions during storage and transportation, it will not be difficult to achieve complete sealing of the static joint surface. However, due to the low level of equipment accuracy and workmanship of some manufacturers, the storage and transportation conditions and management level cannot be perfect.

There are many reasons why the oil pressure of the generator set is too low. What Haixing will tell you in detail today is one of the factors causing this phenomenon: the filter is clogged. copyright by: www.hxdlkj.com When the oil filter is clogged and the oil cannot pass smoothly, the safety valve located on the filter base will be opened, allowing the oil to directly enter the main oil passage without filtering. However, if the opening pressure of the safety valve is too high and cannot be opened in time, the internal leakage of the oil pump will increase, the oil supply to the main oil passage will be reduced, and the oil pressure will also decrease. The oil filter should be maintained on time and the opening pressure of the safety valve should be correctly adjusted to 0.35-0.45MPa. In addition, if the safety valve spring is aged and the valve seat and the steel ball are not tightly sealed, a large amount of engine oil will leak and cause foaming of the oil in the oil pan. At this time, when the oil dipstick is pulled out, you can see the engine oil covered with foam. In addition, the oil pump discharges oil

Generator set electronic control problems are minor faults that we often encounter during operation. Haixing gives you several real cases below to help you understand the causes of faults and solutions. 1. When the key is turned to 'START', the diesel generator set does not start. 1. Check whether the key switch operates well. 2. Check whether there is any fault indication, repair the fault and reset it. 3. Check the battery voltage, if the voltage is too low. , the battery needs to be recharged to full. If the voltage is normal, it is necessary to gradually check whether the voltage signal can be correctly sent to the control link, such as the throttle battery Solenoid valve and starter motor, etc. 4. Check whether the emergency stop button has been relaxed. 2. When the 'START' signal is input correctly, but manual/automatic cannot be started. 1. Check whether the emergency stop button has been relaxed. 2. Check the control key. Is it in the 'STOP' position 3. Check whether there is a fault indication, repair the fault and reset it 4. Check the battery voltage, if the voltage is too low

Cavitation corrosion of the generator set means that the surface of the outer wall of the wet cylinder liner of the diesel generator set in contact with the coolant is destroyed into some needle-shaped holes. These holes gradually expand and deepen, and finally form deep holes or cracks. In what ways can the problem of cavitation be prevented? Haixing Power made a summary from three aspects. (1) Usage factors a. The coolant temperature where cavitation is most likely to occur is 40°C-60°C, so the coolant should be kept at normal operating temperature (80°C-85°C) as much as possible during use. b. Use the coolant specified by the manufacturer. Do not use hard water or cooling water (liquid) containing many impurities. Experiments show that hard water containing salts and alkalis has a cavitation rate dozens of times greater than clean soft water. c. Minimize the time of idling, heavy load and overload operation. d. Add fuel according to regulations to reduce the rough working of the diesel generator caused by combustion. (2) Maintenance factors a. Replace as required

After the Cummins diesel generator fuel is completely burned, the normal exhaust color is generally light gray, and dark gray when the load is slightly heavier. When the Cummins diesel generator is working, abnormal phenomena such as black smoke, white smoke, and blue smoke will occasionally occur. This is the condition for judging the failure of the Cummins diesel generator. Haixing Power will analyze it for you as follows: (1) Black smoke diesel It is a complex hydrocarbon. Unburned diesel fuel injected into the combustion chamber is decomposed by high temperature to form carbon black. When exhausting, it is discharged together with the exhaust gas to form black smoke. Black smoke is a sign of incomplete combustion of fuel in the combustion chamber. The main influencing factors are as follows: 1. Wear of piston rings, cylinder liners, etc. After the piston rings and cylinder liners are worn, insufficient compression pressure is caused, causing the normal ratio of the mixture to change at the end of the compression stroke of the cylinder, causing the fuel to operate under anaerobic conditions. It burns down and produces carbon deposits. 2. The fuel injector is not working properly. The fuel injector does not atomize or drip oil, causing the fuel to not

With the improvement of the technical level of the generator set industry, the application scope and fields of products are also constantly expanding and extending. In recent years, in the context of large-scale expansion of national infrastructure, generator sets have been increasingly used in some fields. In order to ensure the service life of the equipment, Haixing is here to share the precautions for the use of generator sets in harsh environments. 1. When used in high-altitude plateau areas, engines supporting generator sets, especially naturally aspirated engines, will lose some power because the thin air cannot burn as much fuel as at sea level. For Naturally aspirated engines generally lose about 3% of power for every 300m increase in altitude. Therefore, when working on a plateau, lower power should be used to prevent smoke and excessive fuel consumption. 2. Working in extremely cold climate conditions 1) Add auxiliary equipment

When using a diesel generator set, black smoke sometimes occurs, which is caused by insufficient combustion of diesel. Based on years of practical experience, Haixing found that the occurrence of black smoke not only causes damage to the working environment, but also shortens the service life of the engine. In order to reduce the damage caused by insufficient diesel combustion to the generator set, Haixing will analyze the reasons why the diesel unit emits abnormal black smoke. Insufficient oxygen in the cylinder will cause incomplete combustion of diesel. Insufficient oxygen means insufficient air. The main reason is the gas circulation system. The following are some reasons that affect the gas circulation system: 1. Loose, worn, deformed parts of the orchestration mechanism, cam The relative position of the shaft gear and the crankshaft timing gear changes, and the valve opening and closing time is incorrect. 2. The muffler is rusted, carbon deposited or oily. 3. The gap between the intake and exhaust valves is too large, which reduces the valve opening. 4. Air filter