What are the reasons for DPF regeneration failure?
2 Answers
DPF regeneration failure is generally caused by the blockage of the particulate filter. Here is some relevant information about DPF: 1. Introduction: DPF is the abbreviation for Diesel Particulate Filter, and along with water-assisted motivation, it is currently one of the most popular exhaust treatment devices in the emission reduction market. DPF is equivalent to adding a mask to the diesel vehicle's exhaust system. It reduces particulate matter (PM) in the exhaust by filtering and capturing particles, which is a post-emission collection method. 2. Function: Its function is to capture particles through a filtration device that combines surface and internal mechanisms, such as diffusion sedimentation, inertial sedimentation, or linear interception. It can effectively purify 70% to 90% of the particles in the exhaust, making it one of the most effective and direct methods for purifying diesel particulate matter. Simply put, it is a device that reduces particulate matter (PM) in the exhaust through filtration.
I've driven diesel vehicles for over a decade and encountered DPF regeneration failures several times. The most common cause is short-distance driving that doesn't generate sufficient exhaust temperatures to burn off accumulated particulate matter. The system relies on computer-controlled regeneration processes, which can fail if sensors malfunction (e.g., faulty pressure sensors providing inaccurate signals) or when the ECU software isn't updated to the latest version. Always use specified diesel additives when refueling to prevent low-quality fuel from clogging the filter. When regeneration fails, the dashboard warning light will illuminate. The best solution is to immediately drive at highway speeds to raise temperatures and clear the blockage. For severe cases, professional cleaning or filter replacement at a repair shop is necessary – otherwise, fuel consumption will increase and engine damage may occur.
