The national standard requirements for standard parts are high or the requirements for automobile st

Some of the standard parts can be used in the building, while the car is mechanical, of course, the standard of the car is higher, especially the power part is more demanding.

And because the scope of the national general standard is very large, including construction, installation, plumbing, electrical appliances, instruments, chemicals, petroleum, household appliances, machinery manufacturing, and so on. Any industrial and agricultural products have national standards (don't think that the national standards are very high, let's just say food, which is much lower than the world's recognized standards, and most other industries other than food are often unqualified when our country's products are taken out of other countries and cannot meet other people's standards). Therefore, the internal standard requirements of large enterprises with relatively small scope of industries or special needs and international standards may be higher and more specific.

Moreover, the national standards have not changed for decades, and some have been very backward and cannot adapt to the actual use of modern times, so some old national standards can only play a guiding role and limit the minimum production requirements.

And don't always stare at the "qualified standards" in the national standards, because in addition to the qualified standards, there are higher "excellent standards", some companies' products have been tested and qualified, just to say that these products can be used, at least not waste products (because the minimum standards have been met, the qualified standards are the minimum standards, because those below the qualified standards are not usable), not that you have to buy something that has just reached the qualified standards, If someone asks for a product that meets a good standard, then you can't sell it to him. It can only be sold to those who are satisfied with general requirements.

Standard parts are a standardized part that is mandatory or recommended by the state, and the main purpose is to improve interchangeability.

In addition, there are industry standards, local standards, enterprise standards and so on.

The scope of the national standard is relatively extensive, and the formulation of other standards needs to be reported to the standardization administrative department for the record. When the national standard for the same content is published, the industry standard for the content will be abolished.

You can define national standards and industry standards.

The automotive standard is an industry standard, and its national standard **QC

If it belongs to the national standard parts, the industry standard will be invalidated. Strictly speaking, there should be no comparison.

In addition to the national standard, other standards are based on the national standard, and the grade can only be higher than the national standard (but in addition to the enterprise in order to increase the credibility of the general will not raise the standard, because the standard is to increase the RMB).

Chinese automotive standards are divided into the following three levels.

There are two types of automobile standards: mandatory standards and recommended standards. Mandatory standards play an important role in ensuring people's lives and health, protecting the ecological environment, and maintaining national energy and resources.

It mainly includes: automobile safety standards, automobile emission control standards, automobile noise restriction standards, automobile fuel consumption restriction standards, etc. Mandatory standards are enforced by ** and its authorized capitals.

Automotive industry standard (code QC): It mainly includes the performance requirements and technical conditions of the whole vehicle, engine and major assemblies of the whole vehicle, engine and major assemblies, and other standards that indicate the quality level of the product itself.

Emission standards for automobiles are formulated to control the emission of pollutants from automobiles.

The emission standards of automobiles are mainly to reduce harmful gas emissions, inhibit the generation of harmful gases, and also promote automobile manufacturers to improve their products.

China's automobile emission standards are formulated with reference to the European automobile emission standards, and the common automobile emission standards include China 5, China 4, China 3, Europe 5, Europe 4, Europe 3 and other emission standards.

There are a lot of harmful gases contained in automobile exhaust, which not only affect the atmospheric environment, but more importantly, affect people's health.

HC+NOx (hydrocarbons.

and nitrogen oxides), PM (particulates, soot) and other harmful gases.

These harmful gases are produced during the combustion process of the engine, among them, carbon monoxide is an intermediate product of incomplete oxidation of fuel, when oxygen is insufficient, carbon monoxide will be produced, the concentration of mixed gas in the engine increases, and the uneven mixing of gases will lead to an increase in carbon monoxide.

Hydrocarbons are unburned substances in fuel, due to uneven mixture, combustion chamber wall cooling and other reasons that part of the fuel oil is not burned to be discharged, nitrogen oxides are a substance produced by fuel in the combustion process, and particulates are a substance produced by lack of oxygen during fuel combustion.

The most common on the road is the National Four.

For cars in China V and China VI, after the official implementation of the National VI standard, the national Minfeng III emission standard.

The National VI emission standard refers to the national stage VI motor vehicle pollutant emission standard.

For the China V emission standard, the China VI emission standard will more strictly control the emission of pollutants, such as reducing carbon monoxide emissions by 50%, total hydrocarbons and non-methane total hydrocarbons.

Emission limits were reduced by 50% and NOx emissions by 42%.

Automobile industry standards for automobiles: mainly including the performance requirements of the whole vehicle, engine and major assemblies, technical conditions, etc., which indicate the quality level of the product. Emission standards for automobiles are formulated to control the emission of pollutants from automobiles.

The automotive standard parts package includes the following:

1.Bolts and nuts: used to connect parts, paddle socks ensure the stability and safety of the vehicle.

2.Springs: Used to dampen shocks, dampen vibrations, and maintain the shape of vehicle components.

3.Bearings: Used to support the rotating parts of the vehicle, reducing friction and wear.

4.Seals: Used to prevent liquids, gases, and dust from entering the interior of the vehicle.

5.Oil seal: It is used to seal the oil circuit of the vehicle and prevent oil leakage.

6.Washers: Used to fill the gaps between parts, increase tightening force, and reduce friction.

7.Valve stem seals: used to prevent engine valve stem leakage.

8.Tire spool: used for inflation and exhaust.

9.Brake pads: used to brake vehicles.

10.Transmission belt: used to transmit the power of the engine.

11.Filters: Used to filter air, oil, and moisture to protect engines and other components.

12.Spark plug: Start the engine with tung pure ignition.

13.Fuel nozzles: used to inject fuel into the combustion chamber of the engine.

14.Battery: Used to provide electricity to the vehicle.

15.Light bulb: used for the lighting of vehicles.

These are just a few of the common types of automotive standard parts.

The national standard car refers to electric vehicles, but also refers to non-cars, the weight of the national standard car can not exceed 55kg, and at the same time it needs to have a pedal function. The maximum speed of the national standard car is limited to 25km h, the electric bridge of the battery can not be more than 48V, and the power of the motor must be less than 400W.

1. If you have purchased an electric group empty car that does not meet the new national standard, this type of electric vehicle can be licensed, and you can receive a transition license plate according to the regulations, this type of electric vehicle uses a blue license plate, and the transition period is two years;

2. The electric vehicle that meets the new national standard is a vehicle that has been tested and qualified by the relevant right sensitive or slag testing institutions, and the buyer can log in to the official website of the enterprise or the official ** of the local electric vehicle association according to the nameplate of the body and relevant information;

3. The new national standard electric vehicle strengthens the function of pedal riding, and requires that the distance of pedal riding within 30 minutes must be greater than or equal to 5 kilometers.

1. QC T15-1992 General Test Method for Automotive Plastic Products.

2. QC T346-1999 plastic screw plug.

3. QC T349-1999 plastic hoop is used as a belt.

4. QC T349-1999 (2005) plastic tight hoop belt.

5. QC T350-1999 plastic opening and tail pins.

6. QC T438-1999 technical conditions for high-pressure plastic parts of automobile ignition system. Void Hula.

Safety hazards: within 60 days from the date of issuance of the purchase invoice or within 3,000 kilometers of mileage, engine, transmission.

If there is a quality problem with the main auto parts, you can apply for free replacement of the corresponding parts. Also within 60 days or within 3,000 kilometers, the vehicle has a steering system failure and braking system.

In case of quality problems such as failure, body cracking, or fuel leakage, you can also apply for free replacement or return.

1. QC T15-1992 General Test Method for Automotive Plastic Products.

2. QC T346-1999 plastic screw plug.

3. QC T349-1999 plastic tight hoop differential slip belt.

4. QC T349-1999 (2005) plastic tight hoop belt.

5. QC T350-1999 plastic opening and tail pins.

6. QC T438-1999 technical conditions for high-pressure plastic parts of automobile ignition system.

Safety hazard: Within 60 days from the date of issuing the purchase invoice or within 3,000 kilometers of mileage, if there is a quality problem in the main auto parts such as the engine and transmission, you can apply for free replacement of the corresponding parts. Similarly, within 60 days or within 3,000 kilometers of mileage, when the vehicle has quality problems such as the failure of the virtual steering system, the failure of the braking system, the cracking of the body or the fuel leakage, you can also apply for free replacement or return.

Pacific Automobile Network] national standard car refers to electric vehicles, but also refers to non-cars, the weight of the national standard car can not exceed 55kg, and at the same time it needs to have a foot pedal function. The maximum speed of the national standard car is limited to 25km h, the voltage of the battery cannot be greater than 48V, and the power of the motor must be less than 400W. The spacing between the two wheels must be less than 1250mm, and the maximum width must be less than 450mm.

The country's natural introduction of this norm, the key is that the number of electric vehicles is too large, so the number of people using electric vehicles is too much, if there is no unified specification, the electric vehicles produced by electric vehicle manufacturers are not the same.

Electric vehicles refer to electric drive vehicles, electric vehicles include AC electric vehicles and DC electric vehicles, electric vehicles use batteries as energy**, convert electrical energy into mechanical energy, adjust the size of the current through the handle of the electric vehicle, and at the same time can change the driving speed of the electric vehicle.

Since the electric vehicle is electrically driven, it meets the national energy conservation and environmental protection standards, so it is naturally very suitable for short-distance travel.

It is worth mentioning that the most common failure problem encountered in electric vehicles is that the battery is easy to age, and the battery of the electric vehicle will be aged after about two years.