If urea cheating behavior is not controlled, what is the use of upgrading the country five

[The truck House Original 】 Domestic重卡Since upgrading to国四Later, most models are usedSCRThe post-treatment technology, that is, we often say burning urea。At home轻卡After upgrading to national five emissions, it will also start burning urea。The burning of urea in trucks is to reduce the emission of harmful gases from vehicles, thereby reducing pollution to the environment。As the actual user of the truck, there are now some users in order to reduce the cost of the car, using a variety of methods to reduce the consumption of urea, the emission standards as nothing, the relevant management departments do not pay enough attention to this kind of behavior, what is the significance of the country to upgrade emission standards in the long run？

●  After adding screws, urea consumption decreases sharply Country four car instant castration into国三

At present, the common urea cheating methods are adding water, changing the line, brushing the computer, etc., but there is a simpler and cheaper method on the market, spending dozens of dollars to buy a screw can burn less60%-90%If you have someone lathe this screw10Yuan can be done, it can be seen how low the cost of urea cheating is now。

This method of installing urea cheat is very simple, that is, in the position of the exhaust temperature sensor, install a fixed or adjustable screw, so as to raise the position of the sensor probe and reduce the time of urea injection。

I actually interviewed a number of truck drivers, and several have made such modifications

From the driver's mouth learned that such products on Taobao a large search, there are fixed and adjustable height options

We all know that diesel combustion will emit particles and exhaust gas, which in addition to the water and carbon dioxide generated by diesel combustion, there are nitrogen oxides (withNoxThis nitrogen oxide is a harmful gas and must be treated before it can be released into the atmosphere。SCRThe post-treatment system is to decompose urea into ammonia gas with the waste heat of exhaust gas in the exhaust pipe, and then the ammonia reacts with nitrogen oxides to produce nitrogen and water (nitrogen and water are harmless).。

In order to decompose ammonia gas from urea, there needs to be sufficient temperature, and the exhaust gas temperature sensor in the post-treatment system detects that the exhaust gas temperature reaches200After the temperature is above, the urea will be sprayed。The method of installing long screws is to use this principle, after raising the probe position, the probe can only be detected after the machine has been running for a long time200Above the temperature, urea will work。

After adopting this method, some drivers can react with less burning60-90%Urea, however, the author explained earlierSCRThe principle of the post-treatment system, burning so much less urea, the nitrogen oxide content in the exhaust gas will rise sharply, and the country's four cars will instantly change back to the country's three cars。

●  Urea cheating lacks control There is no point in upgrading country 5 in the long run

Compared with the previous several ways of not burning urea (adding water, pulling the line, brushing the process), adding screws this way is low cost, low difficulty, has become the current mainstream method, in addition to domestic cars, some imported car users are also in use。The relevant management departments have insufficient supervision of this kind of behavior, the user only needs to unplug the screw in the annual inspection can be successfully inspected, in addition to the annual inspectors, other time for the detection of exhaust emissions basically no。

Guangdong, a production of truck aftertreatment products enterprises have done a lot of market research, they told the author that in recent years, the country has cracked down on urea cheating at the source, and the new car factory generally has a limit of not burning ureaengineThe torque function of the dealer brush program has also dropped significantly (In my actual visit, I found that some brands of manufacturers will provide official procedures to reduce the use of urea, which can be reduced by nearly halfHowever, the behavior of users privately refit is more and more。

If urea cheating behavior is not controlled, what is the use of upgrading the country five

Next year, the emission standards of domestic trucks will be upgraded to national Five, and light trucks will also begin to burn urea。The rise in emissions standards was intended to further reduce the environmental impact of vehicles，But the current situation is that the user only needs to spend very little cost，It can undermine the effect that the national 4 or National 5 emission standards are intended to achieve，Manufacturers even have official means to help users cheat on urea，The relevant management departments also have lax supervision。If this phenomenon is not addressed, China's truck emission level will return to country three, upgrading country five will become meaningless, but let light truck drivers also join the army to buy screws。

●  afterword

The obvious consequences of this modification of the post-treatment system are two, one is that the user saves a lot of urea money, and the other is that the untreated harmful gases are directly discharged into the air, polluting the environment。For the issue of exhaust emissions, in addition to the need for strict regulation by the government, for enterprises and users, this is not a social responsibility!In the Truck home forum there are card friends said:“We should not let society regress because of selfish interests, so that the four countries will return to the three times。

    Suizhou city Junlong special car company——Is the National Development and Reform Commission designated production of all kinds of special automobile professional manufacturers,Large specialized automobile manufacturing plant.Specialized productionAerial work vehicle、Fuelling truck,Garbage truck,Concrete mixer truck、Watering cart、Fire fighting truck，Dirt suction truck、dumper、Flatbed carrier、wrecker、Garbage truckAll kinds of special vehicles such as semi-trailers, as well as domestic well-known landscaping,Petrochemical industry,Municipal sanitation vehicle manufacturing。Jiefang, Dongfeng, Auman, general agent of heavy truck tractor。Company Wealth Hotline:15308664455    网址：www.hbjlqc.c