In fact, many people have this whimsical idea of directly replacing the outdated engines of National II and III with National IV and V engines. Then the problem will be solved simply! And there is no need to change the car. It is a little genius to save money and be convenient, but this method is very unfeasible.
Mainly because each vehicle has its original file, which has a certain year and date of registration, so the vehicles produced and sold in a certain period belong to a certain emission range, and these have been entered In the national system, and the emission standards promulgated by the country in the corresponding period, there are certain time limits.
In addition, whether the vehicle engine is scrapped or not is not only related to the adaptability of the emission standards, but also to its overall performance and comprehensive efficacy. Therefore, when your vehicle’s emissions fail, it is not feasible to just replace the engine. Unless you feel that you have the ability to carry out comprehensive transformations in terms of performance and security at the same time.
We all know that the engine of a car is very important. It is not only related to the adaptability of the emission standards, but also to the overall performance and comprehensive efficacy of the vehicle itself. In fact, the design of the car is somewhat similar to the design of the aircraft. The application party first proposes the relevant The function of the car, and then determine the various performances of the car based on the function.
For example, load, speed, power, torque, safety, adaptability, fuel type, starting requirements, braking performance, emission regulations, market positioning, etc., and then choose to purchase or design it yourself to match the function and performance The engine and heart are determined to reproduce a complete car. After vehicles such as
are finally produced, the vehicle must be tested for reliability, failure rate, economy, and compliance with regulations. Finally, before the vehicle becomes a commodity or after purchase, there is a very long adjustment process. Complex, so when the vehicle emissions fail, it is impossible to just replace the engine.
And the engine cannot be changed at will. Even if it is changed, it must be changed at the vehicle management office. To change the engine model on your driving license and property ownership certificate, then from the perspective of the current vehicle management regulations He said that it is clearly not allowed to do this, so the staff will not make changes for you.
Although there are now some National IV vehicles that can meet the National V emission standards through some technical means and are upgraded to National V vehicles, they cannot be upgraded in the car file, which means that they are still essentially National IV vehicles, so How should you specifically identify which country’s standard your car meets?
First of all, you can judge by the year of production and model. If you still can't judge the emission standard of the vehicle, you can also check it on the "Motor Vehicle Environmental Protection Network". Just enter the brand and model on the driving license to check. Secondly, you can check it on the certificate of conformity. The vehicle's emission standards will also be marked on it.
One thing to note is: Whether the vehicle's emissions meet the standards is ultimately determined by the environmental protection department's vehicle exhaust detection line. Therefore, after purchasing a second-hand vehicle registered in another place, it is best to go to the local car dealer Please consult the exhaust gas testing department in detail before deciding whether to purchase.
The engine that is replaced privately must be completely consistent with the original manufacturer's specifications and models, and it must be filed with the vehicle management office to change the driving license. Therefore, there is no situation of changing from National II and National III to National IV and National V. This is very serious. Legal issues, not to mention that the National II and National III models are all old models. What’s the point of replacing it with a brand new National IV and National V engine, plus the new three-way catalytic ?
