HS code-based quota management

engine diagram: recognize the carEach part of the motive,HS code-based quota management the car engine is the core part of the car, and its performance directly affects the driving quality and economy of the car. In order to better understand the engine, we need to understand the functions and functions of each part of it. I. The cylinder block and cylinder head of the engine constitute the main body of the engine. A cylinder liner that works in cooperation with the piston is installed in the cylinder block, and the cylinder liner provides power through ignition to burn gasoline. The cylinder head plays the role of sealing the upper part of the cylinder, and also installs a camshaft and valve system to control the opening and closing of the valve. II. The crankshaft connecting rod mechanism The crankshaft connecting rod mechanism includes four parts: crankshaft, connecting rod, piston and piston ring. Among them, the crankshaft is one of the most important parts of the car engine, which plays an important role in supporting and turning when the car is running. The connecting rod is responsible for converting the piston movement into the crankshaft rotation, thus generating the power of the engine.III. Valve control mechanism The valve control mechanism includes camshaft, valve, spring and other parts. By cooperating with the piston connecting rod mechanism, the camshaft transmits the explosive force from gasoline to the connecting rod, thus driving the crankshaft to rotate and generating the power of the car. The valve, on the other hand, plays the role of inleting and discharging gas. Because the combustion of gasoline requires oxygen, the control of the valve is considered to be a key factor in engine performance. IV. Fuel system The fuel system includes fuel storage tank, fuel pump, fuel tank filter, fuel injector and other components. Because the engine needs fuel to generate power, the fuel system is considered the heart of the engine. The function of the fuel pump is to extract gasoline from the fuel tank and press it into the fuel injector. The fuel injector atomizes the gasoline and injects it into the cylinder to mix it with oxygen, and ignites it to generate power. V. Cooling systemThe function of the cooling system is to transfer the heat and exhaust gas of the engine to the outside world to maintain the normal operating temperature of the engine. In this way, the engine can avoid excessive wear and burnout during long-term operation. The cooling system includes water pumps, radiators, water tanks, fans and other components. The water pump draws water from the water tank and presses it into the engine. The radiator cools the engine through the airflow, and the fan helps to dissipate heat better. VI. The function of the exhaust system is to discharge the exhaust gas from the outside world after combustion and maintain the normal operation of the engine. The exhaust system includes exhaust pipe, curved tube, catalytic converter, silencer and other components. Among them, catalytic converters and silencers are important parts of the exhaust system. They can not only reduce the emission of exhaust gas, but also treat the exhaust gas to meet the atmospheric pollution emission standards.In summary, all parts of the engine can perform their respective functions and work together to produce a strong and powerful driving force for the car to speed on the road. In the process of maintaining the car, in addition to regularly replacing the oil and filters, you also need to pay attention to checking the coolant, cooling fan, radiator and other components to ensure that the vehicle is driving in good mechanical condition.

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