The "stricter" motor vehicle exhaust gas detection method will be implemented from December 11 next year. The reporter learned from the Chengdu Environmental Protection Bureau that in order to strengthen the prevention and control of motor vehicle exhaust pollution and improve the environmental air quality, from January 1, 2015, Chengdu City The simple transient condition method and the loading deceleration method (commonly referred to as the “simple working condition method”) will be implemented for the detection of motor vehicle exhaust pollution. Except for vehicles that do not apply the simple working condition method, all other motor vehicles in Chengdu will be Full implementation of this "stricter" test.
Why do you want to implement the "stricter" test, and where is it "strict"? What should the public do in the face of the "stricter" test?
More cars! Exhaust gas pollution "always bullish"
According to the latest data provided by Chengdu Environmental Protection Bureau, Chengdu's motor vehicle exhaust pollution has become increasingly serious, and it has become one of the main sources of urban air pollution. In addition, the frequency of static wind in Chengdu is high, and the diffusion conditions of pollutants are poor. The state in the sky has become more frequent.
How many motor vehicles are there in Chengdu? How serious is the exhaust from these cars?
According to the relevant person in charge of the Chengdu Environmental Protection Bureau, in recent years, the number of motor vehicles in Chengdu has continued to grow rapidly. As of December 5, 2014, the number of motor vehicles in Chengdu was 3,825,700, of which the number of vehicles was 3.018 million. The car ranks among the top cities in the country. In the three years after 2010, the annual emission of nitrogen oxides (NOX) in Chengdu's motor vehicles accounted for 49.1% of the total nitrogen oxide emissions in Chengdu.
"More stringent testing of vehicle exhaust emissions can effectively prevent excessive emission of vehicles on the road and encourage them to be repaired or eliminated." The person in charge said that this will reduce motor vehicle exhaust pollution and improve Chengdu's ambient air. Quality will protect the health of the public.
“For a long time, the regular detection of motor vehicle exhaust pollution in Chengdu has adopted the double idle speed method (for gasoline vehicles) and the free acceleration method (for diesel vehicles) without load detection method.” The relevant person in charge of Chengdu Environmental Protection Bureau introduced The impact of motor vehicle exhaust on Chengdu's air pollution is becoming more and more serious, and Chengdu's efforts to prevent and control motor vehicle exhaust pollution continue to deepen. Previous detection methods have “can't keep up with the times”, and “there is also a tendency to artificially appear during the detection process. cheat."
Where is the stricter detection method for the whole process of simulated driving detection? “The new method implements more rigorous testing procedures and standards, and monitors and eliminates human cheats throughout the process.” The relevant person in charge of the Chengdu Environmental Protection Bureau introduced the simple working condition test of motor vehicles implemented on January 1, 2015, through the simulation of motor vehicles. During the road driving, acceleration, deceleration, constant speed, idle speed and other load operating conditions, the final analysis shows the emission values ​​of hydrocarbon (CH), nitrogen oxides (NOX), carbon monoxide (CO), fine particles and other pollutants. "As long as one of the indicators does not meet the standard, the motor vehicle under inspection is judged to be unqualified."
What happens if you fail? According to Article 16 of the “Implementation Measures of the Law of the People's Republic of China on the Prevention and Control of Air Pollution by the People's Republic of China”: “Motor vehicles that do not meet the emission standards for atmospheric pollutants are prohibited from driving. Public security traffic management, agricultural machinery and other departments may not issue licenses, and may not pass For the annual inspection, the procedures for transfer and transfer change may not be processed."
In order to prevent man-made cheating behaviors such as “walking relationship”, from January 1, 2015, Chengdu will conduct real-time monitoring of the detection process and test data through the newly established motor vehicle exhaust pollution prevention and control information supervision system. Accept the supervision of the general public.
"The detection factor of the new method is more comprehensive, and the test data can more objectively and comprehensively reflect the exhaust emission characteristics of the vehicle under test in various driving conditions." The relevant person in charge of the Chengdu Environmental Protection Bureau said, "In the new test In the method, after 'touching the nails', more people can consciously keep the 'environmental state' of the vehicle, such as regularly changing the exhaust gas filtering device."
Improve the initial success rate can be "self-test"
In order to improve the initial inspection success rate of the “stricter” test method, the relevant departments of Chengdu suggest that if the vehicle is used for a long time, the owner can go to the professional maintenance organization to do some basic inspection before testing.
It is reported that the factors affecting the emission of motor vehicle pollutants mainly include motor vehicle exhaust control technology, engine working state, oil quality, efficiency of three-way catalytic converter, water temperature and oil temperature. “If the fuel injector is clogged, the fuel pressure is too high, and the three-way catalytic converter fails, it is prone to excessive emissions of carbon monoxide and hydrocarbons. It may pass the inspection by adjusting the fuel ratio and cleaning the engine.” Suggest.
At present, there are 23 inspection stations (points) in Chengdu with a simple working condition test qualification.

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