HS code utilization for tariff refunds

List of the table of contents of this article:

• 1,HS code utilization for tariff refunds What is the function of the engine camshaft?
• 2, Does it have any impact on changing the camshaft of the engine?
• 3, Camshaft is What position
• 4, The cause and judgment method of the abnormal sound of the engine camshaft

What is the function of the engine camshaft?

The camshaft is a part of the engine gas distribution mechanism, which is responsible for driving the valve to open and close on time, ensuring that the engine inhales fresh combustible mixed gas for the cylinder at regular times at work, and discharges the combustion exhaust gas from the cylinder in time.

The function of the camshaft: The function is to control the opening and closing action of the valve. In a four-stroke engine, the speed of the camshaft is half that of the crankshaft, while in a two-stroke engine, the speed of the camshaft is the same as that of the crankshaft. However, usually the rotation speed is still very high, which requires a large torque.

The function of the car camshaft is to control the opening and closing of the valve. The camshaft is a component of a piston engine. Although the speed of the camshaft in a four-stroke engine is half that of the crankshaft, it is still very high and requires a lot of torque.

Does it have any impact on changing the camshaft of the engine?

An engine has been running for a long time, and each component will have a large amount of wear. If nothing else is replaced, only the new camshaft is replaced, and the whole system will not change.

Replace a reliable camshaft usuallyIt does not affect the life of the engine. The engine is the gas distribution mechanism of the engine (responsible for the intake and exhaust movements of the engine). There should be no effect after replacement. However, this situation is not common for such a new car, but it is understandable that this car is a complex industrial product.

Standardize the operation of opening the cylinder, which will not have an adverse impact on the service life and performance.

If there is an impact, adjust the gap [If there is a problem with the car, ask the car master. 4S store professional technician, 10 minutes to solve.

Where is the camshaft

The camshaft is in the upper part of the engine, which is mainly used to control intake and exhaust. In the engine cylinder head, it can generally be seen by opening the valve chamber cover.

There are three types of positions of the camshaft: lower, middle and top.The camshaft of the lower gas distribution mechanism is located in the crankcase, the camshaft of the middle gas distribution mechanism is located in the upper part of the body, and the camshaft of the upper gas distribution mechanism is located on the cylinder head. Nowadays, the engines of most mass-produced cars are equipped with overhead camshafts.

The skoda Mingrui camshaft is on the engine. The function of the car camshaft is to control the opening and closing of the valve. Camshafts are usually forged of high-quality carbon steel or alloy steel, and can also be cast with alloy cast iron or ductile cast iron. The working surface of the shaft neck and cam is polished after heat treatment.

The cause and judgment method of the abnormal sound of the engine camshaft

1. The reasons are as follows: the gap between the camshaft neck and the bearing is too large, the camshaft is bent or the eccentric wear of the axle neck.Improper bearing clearance, insufficient lubricating oil pressure, poor lubricating oil quality or poor heat dissipation lead to serious wear of the bearing cover. The axial clearance of the camshaft is improperly adjusted.

2. Reasons for the abnormal noise of the engine camshaft: the gap between the camshaft and its bushing is large; the camshaft bushing rotates; the camshaft bends and deforms; the camshaft axial clearance is too large; the camshaft bushing alloy burns or falls off.

3. The reason for the abnormal noise of the camshaft 1) The matching gap between the camshaft and its bushing is large. 2) Camshaft bushing rotation. 3) The camshaft is bent and deformed. 4) The axial gap of the camshaft is too large. 5) Camshaft bushing alloy burns or falls off.