Regeneration protection system and vehicle

Abstract

The invention relates to a regeneration protection system and a vehicle. The regeneration protection system comprises an engine, an exhaust pipeline, a diesel particle complementing and collecting device, an oxidation catalyst, an ammonia gas supply unit and an electronic control unit, wherein one end of the exhaust pipeline communicates with the engine; the diesel particle complementing and collecting device is arranged on the exhaust pipeline and communicates with the exhaust pipeline; the oxidation catalyst is arranged on the exhaust pipeline between the engine and the diesel particle complementing and collecting device and communicates with the exhaust pipeline; the ammonia gas supply unit communicates with the exhaust pipeline between the engine and the oxidation catalyst; and the electronic control unit is in communication connection with the ammonia gas supply unit, and the electronic control unit is used for controlling the ammonia gas supply unit to supply ammonia gas to the exhaust pipeline. According to the regeneration protection system, the ammonia gas supply unit is controlled to spray ammonia gas into the oxidation catalyst, oxygen and nitrogen dioxide required by the regeneration reaction in waste gas are consumed, and the oxidation reaction of carbon particles is reduced or even stopped from the perspective of a regeneration mechanism. In this way, the cooling speed of the diesel particle complementing and collecting device is increased, and therefore the diesel particle complementing and collecting device is effectively prevented from being ablated and damaged.

Description

technical field [0001] The invention relates to the technical field of regeneration protection of a diesel particle compensator, in particular to a regeneration protection system and a vehicle. Background technique [0002] In order to meet the increasingly stringent diesel vehicle emission regulations, diesel particulate filter (DPF) has become one of the necessary technical solutions for diesel particulate matter emission control. [0003] The function of the diesel particulate filter is to collect particulate matter in the exhaust gas. As the engine runs, the amount of particulate matter continues to accumulate. When the accumulation reaches a certain level, the regeneration function of the diesel particulate filter will be triggered. The regeneration function of the diesel particulate filter makes the carbon particles in the diesel particulate filter oxidize and react with oxygen and nitrogen dioxide to generate carbon dioxide through the temperature rise of the diesel p...

AI Technical Summary

Problems solved by technology

[0005] Based on this, it is necessary to provide a regenerative protection system and a vehicle protection system for the problem that the traditional cooling method cannot cool the diesel particulate filter in time, resulting in damage to the diesel particulate filter.

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