Burner for regeneration of diesel particulate filter

Abstract

Provided is a burner for regenerating a diesel engine particulate filter. The burner includes: a combustion chamber for receiving a exhaust gas through connecting pipes from a diesel engine; a carburetor including a gasifying chamber for gasifying a liquid fuel, an atomizer for atomizing and supplying the liquid fuel to the gasifying chamber, and a convey air inflow line for flowing an external air into the gasifying chamber for conveying the gasified fuel into a mixed gas supplying unit; a mixed gas supplying unit for mixing the gasified fuel with an external air for burning, and supplying the mixed gaseous fuel to the combustion chamber; a combustor disposed in the combustion chamber for injecting the mixed gaseous fuel; an igniter for igniting the mixed gaseous fuel injected from the combustor; and a flame sensor for sensing whether the flame is made on the surface of the combustor or not.

Description

TECHNICAL FIELD[0001]The present invention relates to a diesel particulate filter (DPF); and more particularly, to a burner for regenerating a DPF that reduces soot by filtering soot particles included in an exhaust gas outputted from a diesel engine.BACKGROUND ART[0002]Diesel engines have been generally equipped in trains, vessels, and commercial vehicles. Also, diesel passenger vehicles came out to the market, recently. Thus, the use of diesel engines has increased.[0003]As the use for diesel engines has increased, the large amount of particulate matters (PM) such as soot and soluble organic fraction (SOF) are produced from the diesel engines. Since such particulate matters (PM) are major factors for environment pollution, especially, air pollution. Therefore, the regulation of diesel engines has become tightened.[0004]In order to resolve the pollution problem of diesel engines, a diesel particulate filter (DPF) was introduced. The DPF collects soot outputted from a diesel vehicle...

AI Technical Summary

Benefits of technology

[0016]A burner for regenerating a diesel particulate filter according to the present invention has following advantages.

[0017]At first, the burner according to the present invention can instantly ignite and extinguish flames on a combustor because the burner includes the combustor that is made of porous material having a plurality of flame holes. Also, the burner can stably sustain the flames although the amount of flowing an exhaust gas and the pressure of the exhaust gas abruptly changes due to the abrupt variation of the load of the diesel engine.

[0018]Secondly, since the burner according to the present invention includes the combustor having a comparatively larger surface by forming the combustor made of porous material in a cone shape, a cylinder shape, and a rectangle pipe sha

Problems solved by technology

That is, it is very difficult to stably sustain when the amount of following the exhaust gas outputted from the engine and the pressure conditions change abruptly.

Thus, the flame uncontrollably shakes in the exhaust gas, and is easily extinguished.

These shortcomings make the conventional DPF to become unpractical.

In this case, it is very difficult to increase or sustain the temperature in the exhaust gas channel 20 because the abrupt variation makes the flame instable and to be extinguished.

Accordingly, the regeneration of the filter through

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