RU104241U1 - SILENCER RECEPTION PIPE WITH NEUTRALIZER - Google Patents

Abstract

 A silencer receiving pipe with a converter, including the collector part, consisting of a collector flange made in the form of a plate with holes, and four inlet elements made of bent pipes connected to the inlet openings of the catalytic converter gas part, which consists of two half-bodies combined in a single unit with an inlet gas receiver, a housing of a catalytic unit with a thermally expanding gasket and an outlet pipe, characterized in that the collector flange has two deep cuts on the square -plane, and the input elements connected to the apertured plate are connectable to the cylinder head 8 of the engine valve, each of the two secondary input elements has a kink in the connection to the inlets of the gas inlet.

Description

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

Known exhaust pipe silencer with a neutralizer assembly (patent RU No. 78869, publ. 10.12.2008, F01N 3/10), containing the collector part, consisting of a collector flange and four inlet elements made of bent pipes connected to the inlet openings of the catalyst gas receiver part, which consists of two half-shells, integrated into a single unit with the inlet gas receiver, the casing of the catalytic unit with a thermally expanding gasket and outlet pipe. The specified design is taken as a prototype.

The well-known exhaust silencer intake pipe with a converter allows to increase the efficiency of exhaust gas neutralization (purification), however, this design can only be applied on vehicles with a 16-valve engine. On vehicles with an 8-valve engine, it is not possible to use this design, due to the design and geometry of the cylinder head.

The technical result that can be obtained by implementing the proposed utility model is the possibility of using this design of the exhaust silencer pipe with a neutralizer on vehicles with an 8-valve engine, which leads to an increase in the efficiency of exhaust gas neutralization (purification) and improves the reliability of the pipe during operation as well as reduce noise.

The specified technical result in the implementation of the utility model is achieved due to the fact that the known exhaust pipe of the silencer with the neutralizer contains a collector part consisting of a collector flange made in the form of a plate with holes and four input elements made in the form of bent pipes connected to the input the holes of the gas receiver of the catalyst part, which consists of two half-bodies, integrated into a single unit with the inlet gas receiver, the casing of the catalytic unit with a thermal expansion I have a gasket and an outlet pipe, and the collector flange has two deep cuts in the plane, and the input elements connected to the holes of the plate have the ability to connect to the cylinder head of the 8-valve engine, each of the two middle input elements having a bend at the junction with gas inlet openings. Due to this design, in comparison with the prototype, the distance between the two extreme input elements increased, with a simultaneous change in their length and bending angle, and the distance between the two middle input elements decreased with a simultaneous change in their length and bending angle.

The four input elements of the collector part are made of bent pipe nozzles with a diameter of 33 mm and a wall thickness of 1.5 mm from AISI439 steel that allows you to: ensure the supply of equal volumes of gas flow, reduce the number and length of welds, get rid of the pinching effect of the gas flow and dampen vibration loads of the car engine .

Figure 1 shows the main view of the pipe exhaust silencer with the neutralizer assembly, figure 2 is a side view of the pipe.

The exhaust pipe of the silencer with the neutralizer contains the collector and catalyst parts. The collector part consists of a collector flange 1 in the form of a plate with deep cuts in the plane and with holes for mounting on the engine and is connected to four input

elements in the form of bent pipes 2 from a pipe 33 × 1.5 mm, which are connected to the inlet 3 of the gas inlet 4 of the catalyst part. The distance between the axes of the two extreme input elements is increased, compared with the prototype, up to 307 mm, i.e., the distance change was 40 mm relative to the axes of the extreme input elements of the collector part of the exhaust silencer pipe used for the 16-valve engine, accordingly, the length of the nozzles and bending angles (left - 25.73 °, right - 21.28 °). The distance between the axes of the two middle input elements is reduced to 49 mm, i.e. the distance change was 40 mm relative to the axes of the middle input elements of the collector part of the exhaust silencer pipe used for the 16-valve engine, respectively, the length of the pipes and the bending angles structurally changed (left - 27.12 °, right - 24.84 °), as well as the pipes have one bend angle (3.10 °) at the junction with the inlet of the gas receiver. The catalyst part consists of two semi-bodies connected together with the inlet gas receiver 4, the housing 5 of the catalytic unit assembly with a thermally expanding gasket and an outlet pipe 6 to which an outlet flange 7 is connected. Bushes 8 for installing oxygen sensors are located at the input and output of the exhaust gases in the catalyst part, there are two brackets 9 for mounting the pipe to the engine.

The exhaust silencer exhaust pipe with a neutralizer assembly 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 inlet gas receiver 4, and from it it flows uniformly into the catalytic unit 5, where the catalysis process takes place using deposited precious metal coatings, which allows the exhaust gases to be cleaned of CO, CH, NOx. The cleaned exhaust gases through the outlet pipe 6 and the flange 7, to which the gas exhaust system (SVG) is attached, enter the atmosphere.

The indicated utility model will make it possible to use it on car models with an 8-valve engine, which leads to an increase in the efficiency of exhaust gas neutralization (purification), improves the reliability of the pipe during operation, and also reduces the noise level.

Claims (1)

A silencer receiving pipe with a converter, including the collector part, consisting of a collector flange made in the form of a plate with holes, and four inlet elements made of bent pipes connected to the inlet openings of the catalytic converter gas part, which consists of two half-bodies combined into a single unit with an inlet gas receiver, a housing of a catalytic unit with a thermally expanding gasket and an outlet pipe, characterized in that the collector flange has two deep cuts on the square -plane, and the input elements connected to the apertured plate are connectable to the cylinder head 8 of the engine valve, each of the two secondary input elements has a kink in the connection to the inlets of the gas inlet.