Many drivers have some misunderstandings in the daily use of diesel engines, not only affecting the engine's power and economy, but also becoming an inducing factor for certain failures, which directly affect the service life of engine parts and even the whole machine. These misunderstandings mainly include the following aspects. 1. The fuel supply advance angle should be earlier. Some drivers often prefer early, some even beyond the specified value of 2-3o when adjusting the diesel fuel supply advance angle. They think that the advanced angle of fuel supply is adjusted earlier and the engine is working harder (powerful). However, a premature fuel supply advance is also detrimental to the diesel engine's operation and too late a supply advance. The first is that excessive explosion pressure makes it easy for high-temperature gas to enter the lower crankcase, causing high-temperature fission of the oil. The oil also easily evaporates into oil and gas, causing the crankcase to ignite. Second, the rapid combustion of excess fuel in the cylinder will increase the thermal load on the top of the piston and cause the piston to overheat and damage. Third, the increased vibration of the cylinder liner accelerates the occurrence of cavitation in the cylinder liner and the body, resulting in damage. Fourth, it will cause a knock on the cylinder, increase the piston's impact on the cylinder liner, and make the vibration of the cylinder liner worse, resulting in fatigue damage to the cylinder liner. Fifth, premature oil feed advances cause too much fuel to accumulate in the cylinder before top dead center, and the explosion pressure increases a lot after combustion, which will increase the mechanical load on the piston connecting rod and cause damage to these components. Sixth, excessive heat load can cause cylinder head cracks and valve seat deformation. 2. More oil should be added to the engine oil. When the engine oil is low, the engine oil will be sucked. The oil pressure will drop, and the oil will not reach the lubricating surfaces. This will accelerate the wear and tear of components and even cause tile burning accidents. Therefore, some drivers like to add a little more oil at a time, which greatly exceeds the specified line (number), so as to achieve once and for all. As everyone knows, too much oil can cause many bad consequences: First, too much oil can easily leak out of the front and rear ends of the crankshaft, increase the consumption of oil, pollute the environment, and increase the difficulty of maintenance. Second, the oil surface The high will hinder the movement of the connecting rod, increase the resistance, reduce the mechanical efficiency; Third, too much oil is easy to burn to the combustion chamber and burn, to increase the consumption of oil, the oil is easy to burn in the piston ring, piston top valve seat, The formation of coke at the fuel injection nozzle causes the piston ring to bite to death and the injector wall plug and other faults. Fourthly, the excessively high oil surface is prone to generate oil vapor under the stirring of the big head of the connecting rod. When it encounters high temperature, it will ignite and burn, causing crankshaft. The explosion of the box. 3. The diesel engine speed should be lower. Many drivers do not want the diesel engine to work at the speed of use. They think that the low speed will not cause a failure. In fact, too low speed will also have some negative consequences: First, too low speed will reduce the output power of the diesel engine, reducing its power; Second, too low speed will cause the speed of the various components to work, will deteriorate the parts Work performance, reduce the output pressure of the oil pump, etc.; Third, reduce the reserve power of the diesel engine, so that the diesel engine that should be in normal operation is at full load or overload; Fourth, the rotational speed of the working mechanism of the linkage mechanism is too low. Lowering will reduce the mechanical performance of the work, such as reducing the pump output, reducing the lift of the pump. 4. The water temperature should be lower. The diesel engine water temperature use requirements are clearly stipulated, but some drivers prefer to adjust the outlet water temperature very low, and some are close to the lower limit of the outlet water temperature, and some are less than the lower limit value. They believe that the water temperature is low, there will be no cavitation in the pump, the cooling water (liquid) will not be interrupted, there is a safety factor in use. In fact, as long as the water temperature does not exceed 95°C, cavitation will not occur, and cooling water (liquid) will not be interrupted. On the contrary, if the water temperature is too low, it is extremely harmful to the work of the diesel engine. First, the temperature is low, the combustion conditions of the diesel engine in the cylinder deteriorate, the fuel atomization is poor, the burning period after the ignition increases, and the engine work becomes rough and violent, which intensifies the damage of components such as crankshaft bearings and piston rings, reduces the power, and reduces the economic efficiency. The second is that the water vapor after combustion easily condenses on the cylinder wall, causing metal corrosion. The third reason is that the diesel that comes to burn may dilute the oil and make the lubrication condition worse. The fourth is that the fuel is not completely burned to form a gel, so that the piston ring is stuck in the piston ring groove, the valve is stuck, and the pressure in the cylinder is reduced when the compression is finished. Fifth, the water temperature is too low, the oil temperature is also low, the oil becomes thicker, and the fluidity becomes worse. The oil pump has a small amount of oil so that the oil supply is insufficient, and the bearing clearance of the crankshaft becomes smaller and the lubrication is poor. These are misunderstandings when using diesel engines, and should be given sufficient attention by the driver. They must use diesel engines correctly, give full play to their dynamics and economy, prevent accidents, and prolong the service life of diesel engines and their components.
Goji Berry is taken as one of the most famous plants, which can be both for medical and eating use. The history of goji berry up-picking and for eating use has a long history of 4000years in China. People from different social hierarchies, from the emperor to ordinary people, take goji berry as a good component of medical prescriptions. Goji berry enjoys a great popularity from ancient to modern times, at home and abroad and it has a long lasting and profound life preservation culture.
Ningxia Goji Berry enjoys a great fame around the global due to its high quality standard; meanwhile, it is the only protected product of geographical identity in China, goji berry has a great popularity describes as "goji berry of the world is in China, goji berry of China is in Ningxia and Ningxia`s goji berry is the best".
Specification:
Ningxia goji berry is categorized into 5 levels for experimental use. The fruit particles are required to have evenness in shape, with juicy fruit but not dry particle with impurities, humidity or bitten by insect.
Top Level:≤ 250grains/50g
Excellent Level:≤ 280grains/50g
Superfine Level:≤ 370grains/50g
First Rate:≤ 580grains/50g
Second Rate:≤ 900grains/50g
2. Identification
Color: The color of Ningxia goji berry should be red or dark red and lack luster.
Shape: Ningxia goji berry has big spindle size in shape with thin skin and full pulp. The particle is somewhat above normal size with style trace at the front of the particle and white stipe trace at the bottom.
Flavor: Ningxia goji berry is astringent at first bite then sweet, without ill-smell.
Goji Berry
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