RU2202698C2 - Combination soot filter - Google Patents

Abstract

FIELD: mechanical engineering. SUBSTANCE: invention can be used in exhaust systems of internal combustion engines for reducing content of soot and other products of incomplete combustion of fuel in exhaust gases. Proposed combination soot filter has housing with inlet and outlet branch pipes and the following components arranged in housing in direction of gas flow; solid particles trap made of porous material and perforated hollow rods filled with catalyst solution and covered with filtering cloth. Solid particles trap is made in form of ball whose lower half is dipped in regenerative solution and partition is installed at "liquid- gas' boundary. EFFECT: reduced fuel consumption of internal combustion engine, prevention of reduction of effective power, increased service life of soot filter. 1 dwg

Description

 The invention relates to mechanical engineering and can be used in exhaust systems of internal combustion engines to reduce the content of soot and other products of incomplete combustion in exhaust gases.

 Known combined diesel particulate filter (copyright certificate 181675A1, class F 01 N 3/02, 1993), containing a housing with inlet and outlet nozzles and placed in it sequentially trap of solid particles and perforated rods filled with a solution of catalyst and coated with filtering fabric material .

 The well-known combined particulate filter quickly fails, since soot particles accumulate in a particulate trap made of a porous material. The use in the exhaust system of an internal combustion engine of a combined diesel particulate filter with a particulate trap that is significantly contaminated leads to increased fuel consumption and a drop in the effective engine power.

 The technical result is aimed at increasing the fuel efficiency of an internal combustion engine, preventing a drop in its effective power and extending the filter service life.

 The technical result in a combined particulate filter, comprising a housing with inlet and outlet nozzles, arranged therein sequentially by a gas stream of a particulate trap made of a porous material and perforated hollow rods filled with a catalyst solution and coated with filtering fabric material, is achieved by the fact that the trap the solid particles are made in the shape of a ball, the lower half of which is immersed in a solution for regeneration, and a partition is installed at the liquid-gas interface.

 Distinctive features of the prototype are: a solid particle trap is made in the shape of a ball, the lower half of which is immersed in a solution for regeneration, and a partition is installed at the liquid-gas interface.

 The drawing shows a combined particulate filter, a longitudinal section.

 The combined diesel particulate filter comprises a housing 2 with an input 1 and an output 5 nozzles. In the housing 2, a trap of solid particles 3 and perforated rods 4 are sequentially placed, filled with a catalyst solution and coated with filtering fabric material. The trap of solid particles 3 is made in the form of a ball of porous material, its lower half is immersed in a solution for regeneration 7, and a partition 6 is installed at the liquid-gas interface.

 The combined particulate filter works as follows.

 The exhaust gases through the inlet pipe 1 enter the filter housing 2, pass through the upper half of the particulate trap 3, in which large soot particles are trapped, then through the rods with catalyst 4, where carbon dioxide and hydrocarbons are absorbed, and exit the pipe 5 filter. The lower half of the trap of solid particles 3 at this time is regenerated in the solution for regeneration 7.

 An increase in the pressure of the exhaust gases at the nominal power mode causes the rotation of the trap of solid particles 3. As a result of its rotation, the areas of the trap of solid particles 3 in the solution for regeneration 7 are constantly changed. This ensures high-quality purification of exhaust gases and a long service life of the combined particulate filter.

 Carrying out the regeneration of the trap of solid particles 3 reduces the backpressure to the exhaust gas generated by the combined particulate filter. As a result, fuel consumption is reduced, and engine effective power is increased.

Claims (1)

 Combined diesel particulate filter, comprising a housing with inlet and outlet nozzles, a particulate trap made of porous material arranged sequentially therein in a gas stream, and perforated hollow rods filled with a catalyst solution and coated with filtering cloth material, characterized in that the particulate trap is made in the form of a ball, the lower half of which is immersed in a solution for regeneration, and a partition is installed at the liquid-gas interface.