What is the function of the urea tank?
3 Answers
The function of the urea tank is to reduce the liquid containing nitrogen oxide pollution in the exhaust gas of diesel vehicles. The urea tank is a urea storage tank, also known as a urea canister, which contains urea solution and is mainly used in trucks and buses. After the vehicle exhaust passes through the urea tank, the emissions can meet the National IV standard. Principle of the urea tank: According to the National IV and Euro IV emission standards implemented in 2008, urea aqueous solution is required in the diesel engine emission reduction system, and this urea tank is used to store the urea aqueous solution. To reduce the emission of harmful NOX gases from vehicles, the SCR (Selective Catalytic Reduction) technology is widely adopted internationally. The principle of SCR exhaust treatment is to use urea aqueous solution to react with nitrogen oxides (NOX), producing non-polluting nitrogen and water. Material and structure: The tank body is made of high-density polyethylene material resistant to urea corrosion. The tank is formed as a whole through rotational molding, making it sturdy and durable, available in black or white, meeting safety requirements. The accessory parts are made of reasonable materials to meet the design requirements of the SCR system. Advantages of the urea tank: It can protect the environment and avoid harm. After adding urea, the produced water and nitrogen are non-toxic and harmless.
As an ordinary driver with years of experience driving diesel vehicles, I find the urea tank quite important. It's like a specialized container that holds AdBlue fluid. This fluid is injected into the exhaust pipe while the car is running, helping to reduce harmful nitrogen oxide emissions in the exhaust. It converts those polluting gases into nitrogen and water, making the vehicle more environmentally friendly. I need to check the fluid level every 5,000 to 6,000 kilometers. If it gets too low, the car will show a warning light or even limit the speed. So, I simply buy bottled AdBlue at gas stations and top it up regularly—easy and effective. Maintaining it well can also prevent some malfunctions and ensure smooth long-distance trips. Overall, it allows diesel vehicles to meet modern environmental standards while running cleaner and smoother, which is quite eco-friendly, especially in reducing urban smog.
From a technical perspective, the urea tank in diesel vehicles primarily stores AdBlue—an aqueous urea solution. When the engine is running, the system injects this fluid into the exhaust system. Under high temperature and catalytic action, nitrogen oxides in the exhaust are broken down into harmless nitrogen and water vapor, significantly reducing harmful emissions. This is why modern diesel vehicles require it. Without it, emissions would exceed standards, making the vehicle fail annual inspections. Operation is straightforward—simply refill when the level is low—but always use pure products to prevent system clogging. Its core function is ensuring efficient exhaust treatment, helping vehicles meet environmental regulations and remain compliant. I recommend owners monitor it regularly and not wait for warning issues to arise.
