RU116410U1 - SILENCER RECEPTION PIPE WITH NEUTRALIZER - Google Patents

Abstract

A muffler inlet pipe with a neutralizer, including a manifold flange connected to four inlet elements in the form of bent pipes articulated with the inlet gas receiver of the catalyst part, and there is also an outlet pipe with a flange, characterized in that four inlet pipes in the direction of the exhaust gas flow have a section in in the form of a stepped shape at the junction with the collector flange, turning into a bending section, where the radius and angle of pipe bending are the same for all branch pipes, turning into a straight section, in the form of a cone with an inclination angle of at least 3.7 ° and no more than 14.1 ° , which turns into a straight section at the junction with the channel of the inlet gas receiver of the catalyst part, where they are connected in pairs.

Description

The utility model relates to exhaust devices equipped with cleaning agents and mounted on internal combustion engines of a vehicle.

Known exhaust pipe silencer with neutralizer assembly (patent RU No. 78869, publ. 10.12.2008), including a manifold flange in the form of a plate with holes for mounting the pipe on the engine and connecting with four input elements in the form of bent pipes uniformly articulated with an inlet gas receiver of the catalyst part, as well as an outlet pipe with a flange.

The disadvantage of this design is the low coefficient of uniformity of the flow of exhaust gases (hereinafter referred to as EXHAUST gas) in the catalytic unit, which is associated with the use of four bent nozzles from a pipe of small diameter (33 mm), and, therefore, efficient exhaust gas cleaning is not provided for the full service life of the receiving pipe silencer. Due to the constructive combination of the outlet pipe with the housing of the catalyst part of the half-shell, they have different sizes, which is not technologically advanced and leads to the need to have two streams of die tooling and, accordingly, increases the cost of production.

The technical task of the claimed utility model is to obtain the maximum uniformity coefficient of the exhaust gas flow.

The technical result of using the claimed utility model is to provide the best exhaust gas cleaning, increase the service life of the exhaust silencer pipe, and also obtain a technological design.

The specified technical result is achieved due to the fact that the exhaust pipe of the muffler with the converter includes a manifold flange connected to four input elements in the form of bent pipes connected to the inlet gas inlet of the catalyst part, and there is also an outlet pipe with a flange, and four inlet pipes, along the path of the exhaust gases, they have a step-shaped section at the junction with the collector flange, passing into the bending section, where the radius and angle of the pipe bending are the same for all patras bkov passing in a straight section, a cone with an angle of inclination of not less than 3,7 ° and not more than 14,1 °, passes into a straight portion ⌀45 mm at the junction with the inlet duct of the gas inlet part of the catalyst. All pipes are coupled in pairs, through the channels of the inlet gas receiver of the catalyst part.

The implementation of the four inlet pipes along the exhaust gas in the form of a stepped form from a pipe ⌀38 mm, the dimensions and angle of the cone of which is not less than 3.7 ° and not more than 14.1 °, allows to reduce the flow rate at the inlet to the catalyst part and evenly distribute the exhaust gases throughout the volume of the catalytic unit. All nozzles have the same turning radius in the same plane, which allows the pipe bending operation to be performed on non-programmable hydraulic bending equipment.

The drawings show: FIG. 1 is a main view of a receiving pipe with a converter assembly, FIG. 2 is a side view, FIG. 3 is a middle left pipe, FIG. 4 is a middle right pipe, and FIG. 5 is an extreme right and left pipe.

The exhaust pipe of the silencer with the neutralizer assembly contains a collector, a catalyst part and an output all-stamped pipe (see Fig. 1, 2,). The collector part consists of a collector flange 1 in the form of a rectangular plate with holes for mounting on the engine, and four bent pipes 2 connected from it from a ⌀38 mm pipe having a step-shaped section that passes into a bending section, where the radius and angle of the pipe bend are the same for all pipes, turning into a straight conical section, where the angle of inclination of the conical part is not less than 3.7 ° and not more than 14.1 °. The conical section of the nozzles goes into a straight section from 045 mm, at the place where the nozzles 2 enter the paired inlet channels 3 of the gas receiver 4, which with the half-bodies 5, 6 forms a single unit of the catalyst part. The whole-stamped pipe 7 is connected to the catalyst part, together with the sleeve 8 and the flange 9 fixed to it, and ensure the transmission of exhaust gas from the catalyst part to the exhaust system of the car. On the casing of the catalyst part there are two brackets 10, which are used for fastening to the engine mounts. The exhaust silencing pipe with the neutralizer is designed to ensure compliance with the toxicity standards of the EU Directive 96/69 (Euro 3) and is used as follows. The pipe is mounted on a car engine. The flow of exhaust gases through the bent pipes 2 of the collector part enters the paired inlet channels 3 of the gas receiver 4. Due to the conical shape of the pipes 2, the exhaust flow rate decreases before it enters the catalyst part and, mixing, uniformly covers the largest surface of the catalytic unit, where the catalysis process takes place, that allows you to clean the exhaust gases from CO, CH, NOx. The cleaned exhaust gases through the outlet pipe 7 and the flange 9, to which the gas exhaust system (SVG) is attached, enter the atmosphere.

Claims (1)

A silencer receiving pipe with a converter, including a manifold flange connected to four input elements in the form of bent pipes connected to the inlet gas inlet of the catalyst part, and there is also an outlet pipe with a flange, characterized in that the four inlet pipes along the exhaust gases have a section in in the form of a stepped shape at the junction with the collector flange, passing into the bending section, where the radius and angle of the pipe bending are the same for all nozzles, turning into a straight section, in de cone with an inclination angle of not less than 3.7 ° and not more than 14.1 °, turning into a straight section at the junction with the inlet gas channel of the catalyst part, where they are paired.