It is necessary to have professional knowledge about motor vehicle environmental protection testing

The second link: the dispatcher guides the vehicle. The dispatcher guides the owner to drive into the inspection line according to the route that has been assigned on the environmental protection inspection information sheet.

The third link: the central control room confirms the vehicle information. In order to ensure that the vehicle to be inspected enters the correct detection line, the central control room personnel will confirm whether the information of the vehicle is accurate at the first time after entering the vehicle number plate.

If it enters the correct detection line, the computer prompts the inspector to conduct the test and enter the next link.

The fourth link: vehicle exhaust detection. This is done by a dedicated vehicle inspection operator.

The fifth link: environmental protection testing fees. According to the charging standard indicated on the environmental protection inspection information sheet, the owner will queue up at the environmental protection charging window in the service hall to pay.

The sixth link: environmental protection testing and audit and environmental protection label issuance. At the audit window in the hall, after the test report comes out, the auditor determines that the test result is qualified, and the owner can get the environmental protection mark issued by the staff.

At present, there are generally the following domestic environmental protection testing methods:1Gasoline vehicles: simple transient working condition method, steady state working condition method, double idle speed method, 2Diesel vehicles: loading deceleration method Free acceleration method.

The detection parameters are:

1.Gasoline Cars:

Simple transient method: CO, HC, NOX, and the unit of counting is g km

Steady-state method: CO, HC, NOX, the unit of counting is the molar fraction. Co is %, Hc and NOX are 10-6 power.

Dual idle method: CO, HC, counting units are mole fractions. Co is %, Hc and NOX are 10-6 power.

2.Diesel Cars:

Loading deceleration method: exhaust smoke and maximum wheel power, the smoke unit is m-1 power, and the power is kw

Free acceleration method: exhaust smoke, the unit of smoke is m-1 power.

Are you taking the county station or the city station? This question is very broad, and it is recommended that you find a little bit of other monitoring station exam questions to see what type of things others are taking. It can be basically divided into three categories:

One is the chemical analysis method, the other is the relevant laws and regulations; The third is the quality of environmental pollution. There are a lot of things when you look at them, but there are very few things to test in the exam, so you need to be lucky! It is not recommended that you look for any books, just look for the topic on the Internet, and you will definitely not be able to finish reading the books.

The most annoying thing is that what you watch is not necessarily tested.

Environmental monitoring personnel certificate on-the-job assessment test question set If you want it, give me an email and I will send it to you.

Find some connections and get some relevant information or materials.

Unqualified solutions for automobile exhaust.

1. Replace the spark plug. (Both old and new, as long as the electrode points are cleaned with sandpaper, the gap can be adjusted, and my own is the old spark plug replaced).

2. Adjust the ignition time. (Delay ignition time, this will significantly reduce the amount of NO (nitric oxide) in the exhaust gas, which is crucial, so be sure to remember!) Due to the delay in ignition, the combustion time in the combustion chamber will be shortened, the maximum combustion temperature will be reduced, and the hydrocarbons and nitrogen oxides emitted will be reduced.

However, this will result in a decrease in engine power. It is also commonly known as the fire head big fire head is to adjust the fire head small, adjust the fire head to the limit, as long as you can run up on the highway around the city, reach 100km hours, because the adjustment is too late, the car can not run, and you can adjust it back after testing. )

3. Clean the throttle with cleaning agent.

4. Change to 97 gasoline or 97 ethanol gasoline.

5. Before filling in the form and waiting for the test at the testing station, you must keep the car idling and hot up. (The three-way catalytic converter is effective at high temperature in hot cars, characteristics: its working temperature is about 250-800 °C), I ran dozens of kilometers without delay and went directly to the testing station for testing.

6. Use car exhaust purifier! (Add the car exhaust purifier to the fuel tank, idle for 20 minutes or drive 5-10 kilometers, and you can reach the standard!) )

7. Clean the contacts of the distributor and the contact of the distributor head.

8. Clean the air filter. (If it is too dirty, it is recommended to replace).

9. Clean the three-way catalytic converter and oxygen sensor. (After the three-way catalytic converter was removed, I rinsed it with tap water, and at first it was coffee-colored water, and then it was fine, and the two ends were changed.)

10. Pull section high-speed. (The engine is at high speed, which can clean the engine carbon deposit and the smoothness of the three-way catalytic converter in the exhaust pipe, so that the three-way catalytic converter can work more effectively).

11. Add some water to the exhaust cylinder with a high-pressure pound at the car wash near the testing station.

12. Before testing, keep the engine speed at 4000 rpm and run for 1-2 minutes. Retest.

This wrong operation will lead to unqualified car exhaust testing, and many old drivers will suffer.

Hehe: This is a common phenomenon. Let me tell you a secret: 1. I am not up to standard for the first time every year, after many times of expert guidance--- don't be afraid of fuel consumption at this time, do not turn off the engine before going online and keep idling, just let the catalytic converter work normally; 2. Drive out and pull a high-speed drive (50 60 miles) 20 30 minutes to drive back and then go online, to ensure that you can meet the standard, 3, or you spend 300 yuan to complete it, the effect of reaching the standard is the same.

You can pass even after the hot car! Later, as I can remember, it all passed like this.

My old car is 10 years old.

I hope you can adopt it, and ask again if you don't understand.

The exhaust gas of your turbine can't meet the standard, and the standard requires the EFI engine, and the fuel must be cleaner.

Change the three-way catalytic converter with *** oil.

Before getting on the inspection line, find a professional car review scalper, and pay one or two hundred yuan to be qualified, no matter how old your car is. Don't think that if you have a good car and good oil, you can qualify. If you don't believe it, you will know it, and I have summed it up from years of experience! My eyes are full of tears!

Add green power fuel filter. Reduce exhaust gas by more than 90%. Make sure you pass the annual inspection.

Go to the repair shop and fix it! It's not easy

Check the burning engine oil: Trioxide: wash the injector!

Whoever tests you and gives him a few hundred will tell you how to meet the standard.

No, it is recommended that you take a look at the special equipment.

And then what are the standards for these special equipment.

What kind of car is yours? Is it a yellow label at the beginning?

Small cars are not in operation for the first 6 years, and are reviewed every 2 years. In the future, once in one year, gasoline vehicles reach the national 1 standard, and diesel vehicles that meet the national 3 standard are all green labels.

The following documents need to be brought when reviewing the car, 1, driving book 2The insurance policy (for compulsory insurance) must be within the period.

Pay attention to see if the vehicle has any violations, and if so, dispose of it first, otherwise it cannot be stamped.