What is the concentration of AdBlue for Vehicles?

AdBlue Solution Brands can consider Chalanin Auto AdBlue is a colorless, transparent, and clear liquid with concentrations in between, which is used to reduce nitrogen oxides. At present, the vehicle urea solution is generally composed of high-purity urea and deionized water.

The scientific name of vehicle urea is diesel engine exhaust treatment fluid, which is commonly known as automotive urea, automotive urea, automotive environmental protection urea, vehicle denitrification agent, and the most common is automotive urea.

Automotive urea solution was first used in Europe, called ADBLUE, and in North America it is called DEF (diesel exhaust fluid, that is, diesel exhaust fluid), it should be noted that there are adblue and DEF certified urea production enterprises abroad, and the international standards are strict, while there are very few domestic enterprises that can pass ADBLUE and DEF certification.

Today's China VI diesel vehicles are equipped with urea injection system, which can effectively purify harmful substances in diesel exhaust. So what are the requirements for vehicle urea for China VI diesel vehicles? In fact, as long as it meets the product standard of GB295182013 and the concentration is urea, the solvent must be ultrapure water, and the urea can meet the use of China VI diesel vehicles.

AdBlue is a must-have product for heavy-duty diesel vehicles to meet the China IV emission standard. Vehicle urea refers to a urea aqueous solution with urea concentration and solvent of ultrapure water, and the raw materials are special raw materials for vehicle urea and ultrapure water.

In order for diesel vehicles such as heavy-duty trucks and buses to meet the national IV emission standards, a suitable SCR system must be selected in the exhaust gas treatment, and this system must use urea solution to treat the nitrogen oxides in the exhaust gas. Therefore, vehicle urea solution has become a necessary product for heavy-duty trucks and buses to meet the national IV emission standard.

SCR is the best choice for emission reduction in China. At present, the current domestic diesel national standard GB19147-2009 requires a sulfur content of 350ppm, while ECR-DOC technical requirements for oil sulfur content of less than 10ppm, so it does not have the conditions for promotion in China. SCR can tolerate sulfur oil products up to 350ppm, so it has a technical basis for popularization.

Because the fuel economy of the China IV engine using SCR technology is better than that of EGR technology, the engine changes are small, the requirements for fuel and oil are lower, the continuity of technology upgrade has advantages, the SCR catalytic converter has good durability and there is no risk of catalytic converter blockage, so SCR technology is the most suitable technical route for heavy-duty diesel vehicle emission reduction in China.

Vehicle urea is an aqueous urea solution with a concentration and solvent of ultrapure water, and the raw materials for the production are special raw materials for automotive urea and ultrapure water, and the key point is the purity of the raw materials. From the perspective of production process, although the purity requirements of raw materials for automotive urea are higher than those of general industrial use, the current domestic process can already meet the actual application needs. AdBlue production processes are not sufficient to create high barriers to entry.

** Encyclopedia.

The concentration of vehicle urea is as a reducing agent.

The concentration of engine exhaust treatment fluid (vehicle urea) is the aqueous solution of urea. The selection of urea aqueous solution with a concentration is determined according to the physical characteristics of the aqueous urea solution, and the freezing point of this concentration of aqueous urea solution is the lowest.

What are the requirements for urea for China VI diesel vehicles?

1. Must comply with the national standard. The urea solution used in China VI models must meet the product standard of GB295182013;

2. The concentration of vehicle urea solution is. If urea is used in excess of this concentration standard, the vehicle's urea system is prone to clogging, and if it is lower, it will not be effective in reducing the generation of nitrogen oxides in the exhaust.

3. The urea solvent must be ultrapure water. The so-called ultrapure water refers to the water without any impurities or minerals, and the more common pure water is distilled water. Known as the "National Standard for Automotive Urea", GB 29518-2013 "Diesel Engine Nitrogen Oxide Reducing Agent - Urea Aqueous Solution (AUS32)" was issued by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China and the National Standards Committee on May 7, 2013 and implemented on July 1, 2013!

Aqueous urea solution (AUS32) refers to industrially produced urea that contains only trace (very small) amounts of biuret, ammonia and water, does not contain aldehydes and other substances (such as anti-caking agents), and does not contain sulfur and sulfides, chlorides, nitrates and other compounds.

Filling pumps and vessels that comply with this standard AUS32 shall have the following markings on them: AUS32 GB 29518. It is reported that some cities have previously implemented (or advanced) the national standards for heavy-duty diesel vehicles, and introduced different versions of local standards for vehicle urea, such as Beijing, Shanghai and other places; In April 2013, the Society of Automotive Engineers of China also issued the "Technical Specification for AdBlue Solution" organized by the Society.

Now the national standard version of GB 29518-2013 has been released and implemented, which will become a unified standard in China.

The standard urea solution is a nitrogen oxide reducing agent composed of urea and ultrapure water as a solvent, if the urea solution is too high or too low, it will affect the reduction effect of urea on automobile exhaust.

AdBlue solutions are clear, clear liquids with intermediate concentrations that are used to reduce nitrogen oxides.

The concentration of AdBlue is: The raw materials of AdBlue are special raw materials for AdBlue and ultrapure water.

The concentration of AdBlue solution is: If urea is used in excess of this concentration standard, the vehicle's urea system is prone to clogging, and if it is lower, it will not be effective in reducing the generation of nitrogen oxides in the exhaust.

It's about 3% to 5%, depending on the number of cars.

The concentration of car urea is, and I don't know if it's accurate, anyway, it's written so much.

The vehicle urea density detector is an instrument for detecting the vehicle urea solution, and the detection index is the density of the vehicle urea solution. AdBlue is a solution whose density changes greatly due to temperature changes, so the density determination of AdBlue needs to be carried out under constant temperature conditions. The vehicle urea solution density meter is designed according to the national standard, and can be tested at a constant temperature of 20 degrees, which is suitable for those who need constant temperature.

The composition is a high-purity transparent liquid composed of high-purity urea and deionized water, with a faint smell of ammonia, but do not buy urea from small workshops.

Yes AdBlue solution was first used in Europe, called ADBLUE, and in North America it is called DEF (Diesel Exhaust Fluid, that is, diesel exhaust fluid), it should be noted that there are adblue and DEF certified urea production abroad, and the international standards are strict, while there are very few domestic ADBLUE and DEF certification, simply put, the quality of the production of ADBLUE trademark is more.

The activity space is the body itself, the air is turbid and hot, the body is tired and sleepy, more than 10 hours of persistence, the legs are sore, the legs are swollen, the legs are woody.

Is it good that the concentration of vehicle urea is too high, and it is not good if the concentration of vehicle urea is too high, and the concentration of vehicle urea is too high, which will affect the exhaust emissions of the vehicle, which is not good.

AdBlue density index for vehicles.

The urea content of AdBlue solution is a crucial quality indicator of Aqueous Aqueous Urea solution of AUS32, and it is stipulated in GB T29518 that the urea content of Aqueous Aqueous Urea of AUS32 should be controlled between. Strictly speaking, the urea content needs to be controlled around the limit.

However, it is difficult to directly determine the urea content in the urea aqueous solution. Other impurities are included in the vehicle urea solution, and the direct determination of urea content is easy to cause large errors and the measurement operation is complicated and cumbersome. Indirect measurement is routinely used to measure urea content.

The indicators measured by the indirect measurement grip method are generally divided into two types: density and refractive index.

Because the density and refractive index of urea solution are easily affected by temperature, the detection process needs to be carried out under the standard temperature of GB T29518 20. The standard refractive index should be controlled in between. The standard density needs to be controlled, i.e., within the range.

The principle of density determination of urea for vehicles.

In GB T29518-2013 "Diesel Engine Nitrogen Oxide Reducing Agent Urea Aqueous Solution (AUS32)", it is pointed out that the density detection method of vehicle urea shall be determined in accordance with the provisions of SH T0604-2000 "** and Petroleum Product Density Determination Method (U-type Vibrating Tube Method)".

The test principle is simply as follows: a small amount of sample about 3ml is injected into a sample tube with a controlled temperature, the vibration frequency or period is recorded, and the density of the sample is calculated using the sample tube constant obtained in advance. The specimen tube constant is determined by the vibration frequency of the specimen tube when it is filled with a calibration solution of known density.

According to the relevant national standards, the standard concentration in automotive urea is that the urea is prepared with deionized water.

If it is antifreeze vehicle urea, methanol should be added, but it will not affect the urea concentration, or urea, plus deionized water and 15 methanol.

Expand your knowledge

What is the composition of AdBlue solution?

Vehicle urea solution, also known as vehicle urea water, automotive urea, diesel vehicle exhaust treatment fluid, is used to treat diesel vehicle exhaust to meet environmental protection requirements.

Vehicle urea is essentially no different from the fertilizer urea used in our rural fields, mainly because the purity and impurities are different, vehicle urea is used in large vehicles, the purity is not enough, and the impurities will cause problems such as vehicle blockage crystallization, so the purity requirements of vehicle urea are higher, and the main components are generally high-purity urea and deionized water; In addition, urea in the northern region still has a certain demand for anti-freezing, in this case, urea also needs to add a certain amount of methanol and other substances to achieve anti-freezing.

Why does vehicle urea use deionized water?

In terms of composition, car urea is related to water, many friends think that car urea is urea granules + water, and some will use ordinary tap water + urea granules to match car urea, but the water used in car urea is not ordinary water, but deionized water.

The reason why deionized water is used for automobile urea is mainly because in the working process of automobile urea, it must pass through urea pumps, urea filter elements, urea nozzles and other components, if tap water is used, the minerals, metal ions and impurities in the water will be slowly deposited in the circulation, forming scale, and finally blocking the pipeline and nozzle.

Therefore, a good car urea must use pure crude ionized water, which is what we call pure water.

AdBlue is a type of automotive exhaust treatment fluid. By using this fluid, nitrogen oxide emissions from diesel vehicles can be brought up to European standards. The standard value of vehicle urea means that the consumption of vehicle urea must meet a specific range under certain working conditions.

The calculation method of the standard value of urea for automobile use.

The calculation method of the standard value of vehicle urea is related to the conditions of use of the vehicle. Specifically, the amount of AdBlue used in vehicles is calculated based on the driving mileage of the vehicle and the environment in which it is used.

In some countries, the amount of vehicle urea is specified by **, for every 100 kilometers of driving, vehicle urea consumption must meet the corresponding standards, which is conducive to the control of exhaust emissions.

The importance of the standard value of automotive urea.

The use of vehicle urea in vehicles can reduce exhaust emissions and reduce environmental pollution. Therefore, the standard value of AdBlue is crucial for the environmental performance of the vehicle.

If the amount of urea used in the vehicle does not meet the standard, then the exhaust emissions of the vehicle will exceed the limit specified in **, which will cause greater harm to the environment. In addition, if the amount of AdBlue used in the vehicle is too low or too high, it will also have a negative impact on the engine, leading to a decrease in the performance of the vehicle or even a failure.

How to ensure that the amount of vehicle urea used meets the standard.

In order to ensure that the amount of urine laughing hormone used in cars meets the standards, car owners should follow the following recommendations:

Use of approved AdBlue brands;

Add auto-urea in time, don't wait until the empty bottle to add;

Use the correct method of adding AdBlue for vehicles;

According to the use conditions and mileage of the vehicle, add AdBlue on time.

Through the above points, we can ensure that the use of vehicle urea meets the standards, so as to reduce exhaust emissions and protect the environment.

Summary The standard value of vehicle urea means that the consumption of vehicle urea must meet a specific range under certain working conditions. The amount of AdBlue used is related to the conditions under which the vehicle is used. AdBlue standard values are critical to the environmental performance of vehicles.

Car owners should follow certain usage methods and adding suggestions to ensure that the amount of urea used in the car meets the standards.

It is not good for the concentration to be too high, and the concentration of urea in the vehicle is too high will affect the vehicle exhaust emissions, which is not good.

Urea is only used in diesel vehicles, which rely on urea to treat exhaust gases.

Diesel engines work differently than gasoline engines. There is no spark plug inside the diesel engine, and the diesel engine combustible mixture does not require spark plug ignition.

There is a spark plug inside the engine. After compressing the stroke, the spark plug will ignite the combustible mixture. At this point, the combustible mixture will burn and push down the piston. Only then will the engine work.

After the diesel engine compresses the stroke, the combustible mixture will burn on its own. Because the combustible mixture has a relatively high pressure and judgment temperature after the compression stroke, it will burn on its own, a bit like the detonation phenomenon in a gasoline engine.

Diesel engines are more efficient than gasoline engines. The power and rpm of the diesel engine, although not very high, have a lot of torque.

As a result, most buses, trucks, and semi-trailers will use diesel engines.

The exhaust gas purification technology of the diesel digging oil machine is more complex than that of the gasoline engine. The diesel engine has urea nozzles, particle traps and other components, which can purify the exhaust gas of the diesel engine.

The urea concentration used in diesel vehicles should not be too high or too low.

Millions of car purchase subsidies.