Refrigeration equipment HS code checks

List of the catalog of this article:

• 1, What material is the engine shell made of?
• 2 、What is the function of the new Neptune engine shell
• 3, What to do if the Rongwei i5 engine shell rusts

What material is the engine shell made of?

1. Materials of automobile engines (1) The engine is divided into cylinder head, camshaft, cylinder block, crankshaft, piston connecting rod, oil span shell, intake manifold, exhaust manifold, wire harness, etc. Among them, the cylinder head is made of aluminum alloy. ( 2) The camshaft and crankshaft are made of cast iron. There are cast iron and aluminum alloy cylinders, and more advanced magnesium and aluminum alloys.

2. Automobile engines are generally made of cast iron and aluminum alloy, and now there are also aluminum-magnesium alloys. The housing of aerospace engines is generally made of ultra-high-strength steel.

3. The box is basically aluminum alloy, a small amount of magnesium aluminum alloy, some cylinders are cast iron, and the rest are basically aluminum alloy.

4. Because iron is more resistant to high temperatures than aluminum, if aluminum is used as a body, it is usedIt will turn into water at once. You know that the temperature of the engine is very high when it works. Although there is a radiator, it is still very high. Aluminum can't withstand such a high temperature. If you use those metals that are more resistant to high temperatures than iron, the cost is very high and you can't afford it.

What is the function of the new Neptune engine shell

1. First of all, the engine shell The shell of the engine plays the role of isolation and sealing from the outside world, absorbing various forces during the operation of the engine.

2. Reduce the pressure (resistance) at start-up. There is a pressure reducing valve on the cylinder head of the Suzuki Neptune motorcycle engine. The pressure reducing valve mainly opens the valve slightly at start-up to reduce the pressure (resistance) at start-up.

3. The shell plays a protective role on the internal parts.It can't hurt the internal parts. In order to prevent engine oxidation, you can buy good antifreeze in the market and use antifreeze for a long time, because antifreeze has two major functions, one is high temperature and low temperature protection. Secondly, it has the effect of anti-rust and anti-oxidation.

4. They are generally used in parts that require high strength, high collision absorption energy resistance and strict forming requirements, such as wheel rims, reinforcement components, bumpers, and anti-collision bars. With the progress of performance and molding technology, high-strength steel plates are used in the interior and exterior panels of automobiles, such as roof panels, door interior and exterior panels, engines. On the hatch cover, luggage compartment cover, etc.

Rongwei i5 engine shell What to do if it rusts

1. There is a collision in the structure of the car. If the repair is not done well, it will rust if it encounters the above two situations. Repair method: Sand all the rusty places clean, apply a layer of anti-rust paint first, wait for the anti-rust paint to dry, and apply a layer of color paint close to the color of the original car on the surface.

2. Rust of chassis screws is a relatively common phenomenon. In general, replacing rusty screws can solve the problem. It should be noted that there is any rust problem in other parts of the chassis.If other parts are rusty, they should also be replaced in time, because rusty screws may come off during driving, causing safety hazards.

3. The screw of the Rongwei i5 engine cover has a little oil seepage, which may be because the cover pad you replaced may have a quality problem. Because gaskets are generally made of rubber or other elastic materials, they should not be too tight when screwing. If it is too tight, the rubber pad will be deformed or broken next to the screw, so the factory strength standard should be checked on the screw.

4. It is quite common for automobile steering shafts to rust. Using detergents to clean the engine and steering shell for a long time is easy to cause the steering shaft to rust and even the paint film to fall off. The solution is: apply pine perfume (melting clove powder with alcohol), which can improve the moisture-proof performance. The rust on the steering shaft can be removed.

5. Rongwei's low-voltage battery is faulty. If it's a new car, just run more. If it is a car that has been driven for a long time, the brake disc and brake pads may be rusty. Take it off and grind off the rust layer with sandpaper; or the brake pads are seriously worn, so the brake pads need to be replaced.

6. Park the Rongwei i5 on the horizontal road surface. If the oil is in the normal range of F and L, do not open the radiator cover when the engine is in a hot state. After the engine cools down, check that the coolant level should be between full and low, and the height of the liquid level should not exceed full after adding water.