How to Reduce the Consumption of China V Vehicle Urea?
3 Answers
There are two sensors on the vehicle's exhaust pipe: a smoke sensor and a temperature sensor. By adding a hollow screw to the temperature sensor, the vehicle's urea consumption can be reduced. Vehicle urea is used in trucks, with some trucks consuming a lot of urea and others barely any. In fact, both excessive consumption and no consumption are undesirable. Some truck owners hope to reduce urea consumption by adjusting the SCR system. However, this method is not advisable. It is recommended that owners do not make any modifications to the SCR system, as such changes will not reduce urea consumption and may cause system errors, leading to more harm than good. Urea, also known as diesel exhaust fluid (DEF), is essential for reducing nitrogen oxide emissions from diesel fuel and minimizing air pollution. If the vehicle runs low on urea, the onboard computer will alert the driver. Urea is used in SCR (Selective Catalytic Reduction) technology, a necessary consumable for reducing nitrogen oxide pollution in diesel-powered vehicles. SCR technology is employed by engine manufacturers to meet environmental regulations. Urea consists of 32.5% high-purity urea and 67.5% deionized water.
Well, as someone frequently asked such questions, I've encountered many people wanting to reduce urea usage to save money. For China V vehicles using SCR systems to handle emissions, urea is essential. The system automatically controls the injection amount based on sensor data. If you forcibly reduce it—such as by modifying circuits or reprogramming the ECU—the computer will detect anomalies, immediately limit engine power, making the vehicle unable to run properly, and may also throw fault codes, putting the car into maintenance mode. More importantly, excessive nitrogen oxide emissions pollute the environment, not only resulting in illegal fines but also damaging the lifespan of the catalytic converter. There are ways to reduce waste: first, check common issues like urea tank leaks, nozzle blockages, or faulty air temperature sensors, which can lead to excessive consumption. Regular maintenance with genuine AdBlue fluid and maintaining good driving habits, such as smooth acceleration to reduce sudden stops and steady highway cruising, can naturally reduce urea consumption. Safety first—don't risk big losses for small gains.
I think car owners should focus on understanding why DEF (Diesel Exhaust Fluid) consumption is high rather than trying to adjust it improperly. The urea system in Euro 5 vehicles is designed to control exhaust pollution and its automatic injection should not be tampered with. From my experience, excessive consumption often indicates underlying issues: a faulty DEF level sensor can cause over-spraying, or a clogged filter may mislead the system into pressurizing unnecessarily. Not to mention, low-quality DEF with impurities accelerates nozzle wear, leading to more waste. To genuinely reduce usage, prioritize maintenance: ensure hoses are sealed without cracks, tighten caps to prevent evaporation, and regularly clean the filler port using OEM-approved brands. Driving techniques also help—avoid frequent stop-and-go in city traffic, as a warmed-up engine operates more efficiently with less DEF usage. Economically speaking, proper maintenance saves money in the long run—don’t risk illegal adjustments that could damage your vehicle and cost you dearly.
