HS code reference for mineral exports

What are HS code reference for mineral exportsthe engine failures (Introduction to the types and causes of automobile engine failures) In the daily driving process, it is inevitable to encounter a variety of automobile failures, among which engine failures are the most common one. The engine is the core component of the car and the most significant functional module. Its failure will seriously affect the use of the car. This article will focus on the types and causes of engine failures for drivers' reference. I. Cylinder block failure refers to quality problems such as oil leakage inside the engine. The common reason is the leakage of lubricating oil, water and coolant required when the engine is running. Cylinder block failure will not only reduce the performance of the car, but also cause serious pollution to the environment. There are several reasons for cylinder block failure: 1. Long-term use leads to wear. Long-term use will increase the friction damage inside the engine, and the cylinder block will also wear out.After the engine is used for a long time, the oil film on the inside of the cylinder wall is worn out, which no longer plays a protective role, resulting in oil leakage. Two. The quality problem of the throttle valve controls the air supply of the engine. If the throttle valve becomes unreliable or aging due to quality problems, it will cause the engine to be unable to get enough air supply and reduce engine efficiency. 3. The valve rod is a component that controls the opening and closing of the valve. Usually, the rod failure or wear is caused by insufficient oil or thin oil, which may lead to oil leakage. II. CRANXHAFT FAULT. CRANXHAFT FAULT IS ALSO AN IMPORTANT ENGINE FAULT. USUALLY, THE ENGINE WILL MAKE A SOUND, AND THE FUEL EFFICIENCY AND POWER WILL DECREASE. AT THIS TIME, IT IS GENERALLY NECESSARY TO CHECK THE CRANXHAFT OF THE ENGINE, WHICH IS ALSO THE MAIN PART OF THE ENGINE. The crankshaft failure may be caused by damage to the crankshaft bearing, excessive bearing clearance, roar, vibration, explosion and other reasons.There are several reasons for crankshaft failure: 1. Excessive use causes wear of the crankshaft. In long-term use, friction and wear will lead to mismatch. Two. Unqualified parts produced by unqualified parts manufacturers are also prone to crankshaft failure. Therefore, it is recommended to buy regular parts that need to be purchased. 3. Lubricating oil problem The friction between the lubricating oil and the crankshaft may cause wear, such as insufficient oil, poor quality, oil channel blockage, etc., which may cause crankshaft failure. III. Cylinder failure Cylinder failure usually refers to the damage or damage of the cylinder and its accessories. Cylinder failure may cause the engine to emit odor, lose power, lose oil pressure or reduce fuel efficiency. Cylinder failure is one of the most common problems encountered by cars. There are several reasons for cylinder failure: 1. Excessive use leads to wear. After long-term use, the wear of the oil film on the inside of the cylinder will inevitably lead to cylinder failure.Two. The cylinder is not enough for the air to enter and exit the cabin. The key is to cooperate with the cylinder, piston and valve. If the cylinder is stuck or not completely closed, it will cause the engine to lack oxygen. 3. Explosive shock refers to the vibration caused by the explosion of a vehicle. If poor gasoline is used or the internal engine fails, the engine is drilled, which will cause wear or even damage to the cylinder, resulting in abnormal noise. IV. Cooling system failure The cooling system is the main channel for engine heat dissipation. If the cooling system fails, the vehicle will make a roar, the fault indicator light will turn on, the coolant will leak, etc. In serious cases, it will even lead to engine overheating and engine necrosis. There are several reasons for the failure of the cooling system: 1. Pump failure The water pump will move the liquid when the engine rotates. If the water pump fails, the coolant will stop working, causing the engine to overheat or even burn out.Two. Serious water leakage problems may be caused by seal failure or loose or damage to a fastener in the cooling system. 3. Coolant quality problem Coolant is an important part of the circulating cooling engine, including the anti-corrosion additives specified by the parameters. If the additives are insufficient or do not meet the specified requirements, it will cause the engine to overheat. Summary: Engine failure is one of the disaster areas of automobile failure. There are many types of faults, and the common ones are cylinder block faults, crankshaft faults, cylinder faults, cooling system faults, etc. Depending on the cause of the failure, the repair method is also different. Therefore, it is recommended that car owners must ensure the daily maintenance of the car and check it regularly to reduce the occurrence of engine failures.

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