Diesel engine particulate matter catcher regenerative burner and oil-injecting combustion-supporting compound regenerative system

Abstract

The invention discloses a diesel engine particulate matter catcher regenerative burner and an oil-injecting combustion-supporting compound regenerative system, aiming at providing a burner which can reliably fire under the full working condition of a diesel engine and a regenerative system. The burner comprises an internal barrel, an external barrel, an air inlet system, electric heat plug seats, a first-stage oil supply system, a second-stage oil supply system and a third-stage oil supply system, wherein the internal barrel is concentrically fixed in the external barrel by a support, two ends of the external barrel are air outlets, one end of the internal barrel is sealed, the other end of the internal barrel is opened and is opposite to the air outlets of the external barrel, and an internal chamber of the internal barrel is taken as a combustor; the air inlet system comprises a main air inlet pipe and a subsidiary air inlet pipe, the main air inlet pipe penetrates through the sealed end of the internal barrel to enter into the combustor, the part of the main air inlet pipe in the combustor is provided with a plurality of rows of air inlet holes, and the electric heat plug seats arranged at the upper parts of the first row of air inlet holes are internally provided with electric heat plugs; and the lower ends of the electric heat plug seats are communicated with the combustor, the lower ends of the electric heat plugs are provided with first-stage oil distributing silk screens, and an air outlet of the subsidiary air inlet pipe leads to the lower parts of the first-stage oil distributing silk screens.

Description

technical field [0001] The invention relates to the technical field of diesel engine exhaust particulate matter pollution control, in particular to a diesel engine particulate matter trap regeneration starter and fuel injection combustion-supporting composite regeneration system. Background technique [0002] With the increase of my country's automobile production and ownership, the hazards of automobile exhaust to human health and the pollution of the environment are also becoming more and more serious. Countries around the world have enacted more and more stringent automobile emission regulations. The pollutants currently regulated by the regulations are mainly hydrocarbons (HC), carbon monoxide (CO), nitrogen oxides (NOx) and particulate matter (PM). Among them, diesel Vehicles need to focus on controlling nitrogen oxides (NOx) and particulate matter (PM). [0003] Diesel particulate filter (DPF) filtration is mainly used for the treatment of vehicle diesel exhaust parti...

AI Technical Summary

Problems solved by technology

[0007] 2. It is difficult to accurately control the heating temperature of the regeneration system

Usually, the catalytic oxidation temperature of the oxidation catalytic converter (DOC) is required to be above 300°C, and at the same time, if the temperature is too high, it will accelerate the performance aging of the DOC; Burning DPF

Therefore, the regeneration system requires accurate and stable control of the working temperature at each stage along the pipeline, which is difficult to control

[0008] 3. The ignition reliability of the starter is poor

During ignition, the concentration of oil vapor and oxygen near the glow plug is uneven and unstable, which brings great difficulties to reliable ignition

At the same time, if the power-on time is too long and the local temperature is too high, it is easy to cause damage to the glow plug.

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