Country tariff schedules by HS code

Engine oil pump,Country tariff schedules by HS code the detailed knowledge you must know Engine oil pump is an indispensable part of the engine operation. Its task is to suck the lubricating oil from the oil sup and then transport it through the pipeline to the start All parts of the machine provide the necessary lubrication and cooling for the engine. The role of the engine oil pump should not be negrated. Without it, the engine will not work properly. Next, we will introduce the knowledge of engine oil pump in detail so that you can have a deeper understanding of it. I. The types of engine oil pumps are different according to the working principle and structural form. Engine oil pumps can be divided into many types, among which the most common are gear pumps, hoist pumps, sliding rod pumps, centrifugal pumps, etc. 1.Gear pump Gear pump is a kind of pump based on gear meshing to compress the medium, which is divided into two types: inner gear pump and outer gear pump. The inner gear pump, also known as the cylindrical gear pump, forms a pump cavity from the inside of the inner and outer gear set cylinder. After the lubricating oil is sucked into the pump cavity, the rotation of the inner gear and the outer gear generates an squeezing force to discharge the lubricating oil from the pump body. The outer gear pump, also known as the straight gear pump, is composed of inner and outer gear sleeves, forming a pump cavity between the end cover of the pump body. The volume is continuously squeezed into the lubricating oil from large to small with the rotation of the gear and discharged from the outlet. Two. Hoist pump Hoist pump is also known as oil pump or self-priming pump. It is named because of its shape similar to a hoist. The hoist pump has a "throttle". When the engine stops running, the oil can be discharged from this "throttle" by itself due to its own gravity and certain negative pressure. When the engine starts, the throttle will automatically close, forming a pressure area, entering the oil pump, and then entering the oil supply system through the filter.The hoist pump is more sensitive to oil with large viscosity changes. If the oil temperature is too low, it will cause gasoline to adsorb, thus extinguishing the ignition. 3. Sliding rod pump Sliding rod pump is a kind of pump body that realizes the engine's self-supply of oil through the back-forth movement of the plunger. The liquid is hydraulically introduced from the suction end, and the slider drives the plunger to make a reciprocating movement to achieve liquid compression. Sliding rod pumps quickly increase oil pressure, and have a wide range of applications in modern machinery of high-pressure and high-efficiency hydraulic equipment. Four. Centrifugal pump Centrifugal pump is a kind of pump that uses the rotational force of the rotor to move the liquid in the centrifugal direction. It is widely used in various industrial equipment because of its very high operating speed. The advantages of centrifugal pumps are low energy multi-efficiency ratio and a wide range of applications, but they are generally suitable for industrial fields rather than automobile engines. II. The working principle of the engine oil pump The working principle of the engine oil pump is very simple. It drives the rotor or plunger in the pump body to work by rotating.When the engine starts, when the oil pressure is detected below a certain level through the driving computer or hydraulic pressure gauge, it will automatically start the oil pump to work and suck in the lubricating oil in the oil span shell. After passing through a filter, the oil is transported to various parts of the engine that need to be lubricated, such as the camshaft, rocker arm, piston, cylinder wall, etc., forming a The fixed-pressure lubricating film plays the role of lubricating, cooling, reducing friction and prolonging the life of the engine. III. How to maintain the engine oil pump Although the engine oil pump is simple to work, it is easy to have problems due to long-term use and environmental influence. Once a malfunction occurs, it is easy to cause engine damage, which leads to safety hazards. Therefore, we should constantly check the use of the engine oil pump and maintain it in time. 1. Regularly replace the oil engine pump is the mostThe main task is to transport lubricating oil to the engine, and the quality of the lubricating oil directly affects the service life of the engine oil pump. Therefore, we should change the oil regularly and choose the appropriate oil according to the weather and road conditions to avoid the oil being too thin or too thick. Two. In addition to replacing the oil, another important link in the maintenance of the engine oil pump is to replace the filter. The filter can filter out the impurities in the engine and avoid impurities entering the oil pump and causing failure. At the same time, keeping the filter clean can also improve the service life of the oil pump. Four. Check the oil pump regularly. We need to check the oil pump regularly, such as checking whether the pump is leaking oil, whether there is any abnormal noise, whether the oil pump is damaged, etc. Only under the premise of maintaining a good state of long-term use of the engine oil pump can we provide all-weather safety for the engine.The function of the engine oil pump is very important. It can not only provide the necessary lubrication and cooling of the engine, but also directly affect the service life of the engine. Therefore, in order to ensure driving safety and the normal use of the engine, we need to continuously strengthen the maintenance of the engine oil pump to ensure the long-term stability of the engine oil pump.

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