What Are the Reasons for Low Urea Consumption in Diesel Vehicles?
2 Answers
Possible causes include: damaged urea pump, blocked urea pipeline, clogged injector nozzle, etc. If it is found that the vehicle's urea has not been consumed, or when the vehicle's malfunction indicator light is on, the SCR system of the vehicle may not be functioning (commonly interpreted as urea not being burned). This issue cannot be resolved on your own and should be addressed immediately by visiting a professional 4S shop for inspection and maintenance. Below is additional information: 1. Automotive urea: A liquid used in SCR technology to reduce nitrogen oxide pollution in diesel vehicle exhaust. Its composition consists of 32.5% high-purity urea and 67.5% deionized water. 2. Hazards of not adding urea: (1) Environmental pollution: Failure to add urea to diesel vehicles can have a significant impact on the ecological environment, which is also a concern under national laws and regulations. (2) Damage to the SCR injection system: If urea is not used for a long time, the nozzle, pipeline, and urea pump in the SCR system may become blocked or damaged due to high temperatures.
I've been driving diesel vehicles for over a decade, mainly operating heavy-duty trucks for transportation. I've noticed that lower urea consumption might be related to driving habits. If you prefer smooth driving, avoiding sudden acceleration and braking, the engine load is lighter with fewer emissions, naturally using less urea. In urban congestion or during short-distance driving, the system operates less stably, actually consuming more. I've adjusted my approach: more highway driving with long-distance constant-speed cruising, which helps the urea tank last longer. But don't deliberately use too little, as long-term insufficiency can lead to incomplete nitrogen oxide treatment, affecting environmental protection. It's advisable to record mileage and usage changes to identify patterns and replenish timely. Regular system checks ensure nozzle clarity to prevent clogging and worsening issues. Developing good habits saves money and is sustainable.
