Diesel engine test bench tail gas treatment control device for national sixth emission

Abstract

The invention provides a diesel engine test bench tail gas treatment control device for national sixth emission, and belongs to the technical field of tail gas treatment mechanisms. The diesel engine test bench tail gas treatment control device for national sixth emission comprises a basic assembly and an assembling assembly. The basic assembly comprises a PLC, a urea metering injection pump, a gas inlet pipe, an oxidation catalyst DOC, a particle catcher DPF, a catalytic converter SCR, an ammonia escape processor ASC, an exhaust pipe, a first nitric oxide sensor, a first vertical plate, a second vertical plate, a third vertical plate, a first inserting rod and a second nitric oxide sensor. During use, an electromagnet firmly attracts an iron block, that is, a second inserting rod is fixed in a box body, then tail gas can continue to be treated, and then the detached particle catcher DPF is cleaned. According to the control device, the particle catcher DPF can be conveniently and rapidly replaced, and the tail gas treatment efficiency is improved.

Description

technical field [0001] The invention relates to the field of exhaust gas treatment mechanisms, in particular to an exhaust gas treatment control device for a diesel engine test bench with national six emissions. Background technique [0002] A diesel engine is an engine that burns diesel for energy release. Diesel is sprayed into the combustion chamber at high pressure, compressed and ignited to carry out diffusion combustion while spraying and burning. This working method determines that the mixing of diesel and air is uneven, and local oxygen deficiency or local oxygen enrichment is inevitable. When oil is exposed to high temperature and lack of oxygen, it is easy to carbonize and form soot. The adjustment of diesel vehicle load is controlled by changing the fuel injection quantity. The mixture of diesel vehicles is always in a relatively lean state, which means that there is always a surplus of air in the combustion chamber of the diesel engine. The excess air is prone...

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Problems solved by technology

[0004] In order to make up for the above deficiencies, the present invention provides a diesel engine test bench exhaust gas treatment control device for National VI emissions, aiming to improve the efficiency when the particulate trap DPF needs to be removed from between the oxidation catalyst DOC and the catalytic converter SCR. , it is necessary to remove multiple bolts to remove the particulate trap DPF, which leads to a long replacement time of the particulate trap DPF and reduces the efficiency of exhaust gas treatment

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