Hangzhou launches new method for exhaust testing of diesel vehicles

On July 10th, in order to protect the air quality of Hangzhou, Hangzhou will use a slow-loading mode of deceleration for diesel exhaust gas detection. Under this detection method, diesel vehicles that are in poor condition and prone to black smoke will be subject to stricter supervision.

The load deceleration mode method is a method of measuring the visible pollutants in the exhaust gas of a diesel vehicle when simulating the vehicle load operation, and it can truly and objectively reflect the vehicle's pollutant emission level. The new detection method will be implemented in six exhaust testing stations in the main urban area of ​​Hangzhou, and will be gradually introduced to other testing stations in Hangzhou. Previously, only Beijing and Shenzhen had implemented this test method.

The pollutants emitted by diesel vehicles mainly include carbon monoxide, hydrocarbons, nitrogen oxides and particulates, of which nitrogen oxides account for 83.23% of the total number of nitrogen oxides in motor vehicles, while 100% of particulates directly emitted by motor vehicles are diesel vehicles. Emissions. Environmental protection officers found during routine inspections that 1% of vehicles often ran black smoke. Of these, apart from some old, poorly-functioning buses, more are trucks and vans. Therefore, controlling the “black smoke” of diesel vehicles actually controls the generation of particulate matter, which is of great significance for the reduction of PM2.5.

For this new method, Zhu Bin, director of the Hangzhou Motor Vehicle Exhaust Pollution Management Department, made a very vivid metaphor: The vehicle is like a person, allowing him to rush onto a slope in the shortest possible time. There is no problem with the good body rushing in; if the body is poor, it will be detected at once. He said, "More stringent than the original detection method, the exhaust will certainly be more than a lot of cars."

At present, Hangzhou has a total of 125,898 yellow-label vehicles (including State II diesel vehicles), most of which are diesel vehicles. According to the data obtained from the Hangzhou Motor Vehicle Exhaust Pollution Management Department, by December 2012, there were 125,898 yellow label vehicles in Hangzhou, accounting for 5.60% of the total vehicle population in Hangzhou, accounting for a very small proportion, and accounting for their pollutant emissions. The ratio is very large, with 49.44% of nitrogen oxides, 35.39% of hydrocarbons, and 74.43% of particles.

Zhu Bin said, “The purpose of rectification is to make the atmosphere of Hangzhou cities better, and each owner should take responsibility for protecting the environment. If the vehicle fails to pass the test, the owner of the car must continue to repair if he still wants to go on the road. "If multiple tests still fail, they will be scrapped in accordance with national regulations.