Which is better and different from the emitting country or the emission belt on board diagnostic OB

Euro 3 and China 4 are the same standard.

It makes no difference.

According to China's No. 4 standard, the car is equipped with an on-board automatic diagnostic system as standard to monitor whether the exhaust gas exceeds the standard, which is very important.

China III and China IV are formulated with reference to Euro III and Euro IV standards, but they are stricter than Euro III and Euro IV, and the standards are higher.

1.What are European environmental standards?

The topic of environmental protection is hot, which inevitably involves European environmental protection standards, especially in Europe I and European standards, which appear most frequently, so what is European I and European standards? Take the design number of occupants not more than 6 people including the driver, and the maximum total mass does not exceed tons of this kind of vehicle as an example, in the stage from January 1999 to December 31, 2003, the limit of the emission standard must be met: carbon monoxide shall not exceed gram kilometers, hydrocarbons shall not exceed gram kilometers, wherein the particulate matter of diesel vehicles shall not exceed gram kilometers, and the durability requirement is 50,000 kilometers, and the above is the European I standard that we usually mention.

After January 1, 2004, this standard has been raised, gasoline vehicles carbon monoxide does not exceed gram kilometers, hydrocarbons must not exceed gram kilometers, diesel vehicles carbon monoxide does not exceed gram kilometers, hydrocarbons must not exceed gram kilometers, particulate matter standards must not exceed gram kilometers, this is what we call the European II standard. If emissions are taken into account alone, the pollutant emissions of motor vehicles that implement Euro standards will be reduced by 30 to 50 per cent compared to Euro I standards. The European standard is a real low-pollution emission standard that is currently being implemented in Europe and the United States.

According to experts, the impact of China's implementation of European standards: 7 cars that implement European standards are equivalent to the pollutant emissions of 1 carburetor carburet; 14 cars that implement European standards are equivalent to the pollutant emissions of 1 carbureted car. Automobile emissions from Europe to Europe are not as simple as Europe to Europe, and the increase is much larger.

The European emission standard has changed compared with the European content of the NEDC and fuel evaporative emission testing items, and the European standard has added low-temperature HC CO emission testing, on-board diagnostic system testing and in-use vehicle emission testing. Different emission control technologies are implemented from Europe to Europe, and the European emission standards only require two measures for three-way catalytic converter and engine improvements, while European emissions also include improved catalytic converter coating, catalyst heating and secondary air injection. It can be seen that European emission control technology is much more complex and difficult than European emissions.

European vehicle emission standards are shown in Table 1.

Table 1 European vehicle emission standards.

Name of regulation Model CO(G km) HC(G km) NOX(G KM) HC+NOX(G KM) PM(G KM) Date of implementation.

Euro I Gasoline and Diesel Vehicles (Form Certification, Conformity Certification) Form Certification, Conformity Certification.

Euro Type Certification for Petrol Vehicles.

Non-Direct Injection Diesel 1 Conformance Certification.

Direct Injection Diesel 1

Euro Type Certification for Petrol Vehicles.

Diesel vehicle conformance certification.

Euro IV Gasoline Car 1 Form Approval.

Diesel vehicle conformance certification.

The country is made in Europe, and it is produced in Europe.

China III is basically Euro III. Refers to the emission index of exhaust gases, and China is the European standard that is applied. Euro III is not much different from China III, but it is not the same. In the past, many manufacturers announced that they could meet Euro III emission standards, but none of them were officially approved by the State Environmental Protection Administration.

In accordance with past practice, the state.

Third, after the introduction of the national emission standards, automobile manufacturers will send the sample car to some testing institutions entrusted by the State Environmental Protection Administration to do emission type approval tests, and then submit the test report and related application materials to the relevant departments of the State Environmental Protection Administration, and the State Environmental Protection Administration will give the manufacturer type approval in accordance with certain procedures.

Since the new national emission standards have not been introduced before, it is impossible to do such work, so the manufacturers themselves do the relevant tests and then announce that their models can meet the emission standards equivalent to Euro III or Europe.

O3 is equivalent to the emissions of China III, and for used cars** it is basically the same emission limit as new cars. The transfer of second-hand cars in the local area to the local area is not affected by emissions, but the transfer of used cars from other places is the same as the license plate of a new car.

Emission standards: Automobile emissions refer to harmful gases such as CO (carbon monoxide), HC NOX (hydrocarbons and nitrogen oxides), PM (particulates, soot) emitted from exhaust gases. From January 1, 2004, Beijing will change the exhaust emission standard for motor vehicles from the current Euro I to Euro II.