On-vehicle additive automatic supply system for stable regeneration in exhaust filter system of diesel automobile exhaust gas reduction system

摘要

The present invention relates to a method for reducing particulate matter (soot) accumulated on a filter in a soot filtration system of a post-treatment apparatus, which is one of technologies for reducing exhaust gas of a diesel vehicle, to pde an additive for relatively lowering the ignition temperature of soot at a high temperature The present invention relates to an automatic on-vehicle type additive supply apparatus for supplying diesel oil and an additive at a predetermined mixing ratio between a fuel tank and an engine fuel supply pump. When the additive is injected into the fuel tank according to the amount injected into the tank, depending on the insufficient stirring action and the separation of the fuel caused by the specific gravity difference between the diesel oil and the additive, the soot does not contain additives, So that they are accumulated in the course of the soot filtration. When the soot is regenerated, a very high ignition Degrees requires, and also reproducing the irregular and receives a thermal shock in a temperature distribution and a localized temperature increase, as well as the exhaust talttae irregularity in the filter is not complete, and the filter is damaged, is dropped in a flock operation of the vehicle.;In view of this point, the present invention can uniformly distribute a certain amount of the additive in the fuel so as to keep the components of the additive uniformly distributed in the soot generated after the combustion of the fuel, To ensure stable and complete regeneration as well as to be ignited at low temperatures and to maintain a stable regeneration temperature in the filter to prevent damage to the filter from rapid thermal stress to maintain the performance of the soot filtration system So that the vehicle can be operated normally.