Cleaning repair system for diesel vehicle SCR/DPF aftertreatment system

Abstract

The invention discloses a cleaning repair system for a diesel vehicle SCR / DPF aftertreatment system. The cleaning repair system comprises an impact washing system, an outer flushing system, an automatic detecting and air-drying system, a control and printing system and an auxiliary device. The impact washing system and the outer flushing system each comprise a cleaning tank. Each cleaning tank comprises an automatic heating component, a manual liquid adding component and a liquid level control component. The auxiliary device mainly comprises an illumination component, a dehumidification component and a cooling component. The cleaning repair system for the diesel vehicle SCR / DPF aftertreatment system has the following advantages that by means of the two cleaning systems, cleaning is more thorough; the system is intelligent, has multiple functions and is simple in operation; automatic or manual liquid adding can be achieved; automatic and efficient cleaning can be achieved; the cleaningeffect can be automatically detected and printed to be filed; and economic performance and environment protection are achieved.

Description

technical field [0001] The invention belongs to the field of tail gas treatment and automatic cleaning, and in particular relates to a cleaning and repairing system for the SCR / DPF after-treatment system of a diesel vehicle. Background technique [0002] Diesel Particle Filter Selective Reduction Technology (SCR / DPF) is a treatment process for NOx in diesel vehicle exhaust emissions, that is, under the action of a catalyst, the reducing agent ammonia or urea is injected to reduce the NOx in the exhaust gas to N2 and H2O. There are two types of catalysts, noble metals and non-noble metals. This technology is also widely used in aftertreatment of diesel engine exhaust. By optimizing the fuel injection and combustion process, the generation of particulate PM is controlled as much as possible inside the engine, and then the nitrogen oxides formed under oxygen-enriched conditions are treated outside the engine, that is, using urea for vehicles (Urea for vehicles decomposes to g...

AI Technical Summary

Problems solved by technology

[0003] The SCR / DPF reduction process will produce a large amount of internal carbon deposits, particles and urea crystals, which need to be cleaned frequently. However, the existing cleaning systems are difficult to achieve a thorough cleaning effect and the cleaning steps are relatively complicated.

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