RU136988U1 - SILENCER RECEPTION PIPE WITH NEUTRALIZER - Google Patents

Abstract

A silencer receiving pipe with a converter, including a manifold flange connected to four input elements in the form of stepped pipes connected to the inlet gas receiver of the catalyst part, which also has a control sensor and an outlet part with an exhaust flange, characterized in that both end pipes have pipe deformation in the form of dents symmetrically located relative to the central axis of the pipe, and there is compression in the upper part of each pipe, moreover, the edge contour of the cut of the gas receiver part is configured so that the axis of the nozzle coincides with the axis of the inlet channel of the gas receiver and the axis of the nozzle and the edge circuit of the end of the gas receiver are at an angle of 90 °, and along the edge contour of the end of the gas receiver between the middle channels an undershot is made, while the middle entrance channels of the gas receiver they have an oval shape in vertical section and on the upper and lower half-shells of the gas receiver there are half-rings, and the catalyst housing, assembled from two half-shells, represents battle a single design consisting of an inlet gas receiver, a catalyst part and an output part, at the end of which an exhaust flange is fixed, and the catalyst housing has a length that allows the installation of a 5 "(127 mm) catalyst, and a control sensor is installed on the catalyst housing, which offset to the end surface of the catalyst in such a way that the distance L from the lower end of the sensor to the end surface of the catalyst is not more than 33.42 mm, and clamps directed to

Description

The utility model relates to exhaust devices equipped with cleaning agents and installed on internal combustion engines of a vehicle, mainly on 8 valve internal combustion engines of a LADA vehicle.

A known exhaust pipe silencer with a neutralizer assembly (patent RU No. 116410, B60K 13/04, publ. 05/27/2012), including a manifold flange, four inlet elements in the form of stepped pipes connected to the inlet of the catalyst part, on which the outlet pipe with a flange and a control sensor are fixed.

The specified technical solution has the following disadvantages:

- the extreme left and right nozzles during operation touch the housing of the intake manifold of the engine located above them through a small structural clearance;

- due to the fact that the middle left and right nozzles pass into the cylindrical channels of the gas receiver, the exhaust gas flow of the engine to the catalyst region is ensured so that the control sensor located in the gas receiver does not fully recognize this flow (the so-called “washability” of the sensor) and the result is not the correct signal for the preparation of the combustible mixture;

- due to the mismatch of the axial lines of the four stepped nozzles with the axial lines of the inlet channels of the gas receiver, uneven increased gaps are formed at the junction points, which are welded by manual arc welding, which affects the quality of the welds and increases the complexity of manufacturing the receiving pipe;

- the design of the gas intake channels is such that the channels reduce the exhaust gas flows in the catalyst region into two streams, which leads to its rapid wear and can not withstand the service life of the exhaust silencer pipe with the neutralizer, as part of LADA vehicles, with a mileage of at least 160,000 kilometers;

- the use of a separate outlet pipe does not allow to increase the size of the catalyst housing for using the receiving pipe on engines with a volume of 1.8 l;

- the design of the outlet pipe is not technologically advanced and requires a lot of labor in the manufacture and assembly.

The technical task of the claimed utility model is to expand the technical capabilities of the design.

The technical result of using the inventive utility model is to increase the "washability" of the control sensor, to ensure the service life of the exhaust silencer pipe with a neutralizer, as part of LADA vehicles, with a mileage of at least 160,000 kilometers due to improved gas flow distribution, ensuring a uniformity coefficient of more than 0.9 and improvement technological design, reducing labor costs in the manufacture of a receiving pipe with a converter.

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 inlet elements in the form of stepped tubes connected to the inlet gas inlet of the catalyst part, on which the control sensor is also mounted and there is an outlet part with an outlet flange . Moreover, the contour of the cutoff of the end part of the gas receiver is made so that the axis of the pipe coincides with the axis of the inlet channel of the gas receiver and the axis of the pipe and the contour of the cutoff of the end of the gas receiver are at an angle of 90 °, as a result of which the extreme, as well as the middle pipes, become interchangeable, which makes the design of the receiver, uniform gaps are obtained, which makes it possible to use robotic welding, and in order to ensure the passage of the welding torch of the robot, along the edge contour of the end of the gas receiver, between the middle anal, performed obnizhenie. To increase the gap between the end pipes and the intake manifold body, the pipe deformation in the form of dents symmetrically located relative to the central axis of the pipe is made on both extreme pipes, and compression is also performed in the upper part of the pipe ends.

To improve the "washability" of the control sensor, as well as to increase the life of the catalyst, the middle inlet channels of the gas receiver are oval in vertical section and bent in the form of a "half ring" are made on the upper and lower half-shells, which ensures the exhaust gas flow deviates down to the center of the catalyst, and the control sensor is offset to the end surface of the catalyst so that the distance L from the lower end of the sensor to the end surface of the catalyst is not more than 33.42 mm

The catalyst housing, assembled from two half-shells, is a single structure consisting of an inlet gas receiver, a catalyst part and an output part, at the end of which an exhaust flange is fixed. The catalyst housing has a length that allows the installation of a 5 '' (127 mm) catalyst.

To ensure reliable fixation of the heat-shielding gasket and, accordingly, the catalyst in the half-shells, clamps are made directed towards the catalyst, of which four are located on the upper half-shell and six on the lower half-shell. The clamps press the heat-shielding gasket to the catalyst and thereby prevent its displacement.

The drawings show: FIG. 1 is a general isometric view, FIG. 2 is a main view, FIG. 3 is a side view, FIG. 4 is a bottom view, FIG. 5 is a section D-D (sensor position), FIG. 6 - section Α-A (position of the stepped pipe and cutoff of the gas receiver circuit), FIG. 7 - section CC (connection of the inputs of the extreme left and right stepped pipes with the circuit of the gas receiver), FIG. 8 is a cross-section E-Ε (connecting the inputs of the middle left and right stepped nozzles with the gas receiver circuit), FIG. 9 - section BB (clamp heat-shielding gasket).

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 holes for mounting on the engine, and four bent pipes, two extreme pipes 2 and two middle pipes 3 made of ⌀038 mm pipe having a step-shaped section connected to it. Deformation in the form of dents 4, symmetrically located relative to the axis of the nozzle, is made at the extreme nozzles 2, and compression 5 is also made at the top of each nozzle. The nozzles 2 and 3 enter the inlet channels 6 and 7 of the gas inlet 8, respectively. The nozzles 2 and 3 are installed so that the axis of each pipe coincides with the axis of the inlet channel of the gas receiver and the axis of the pipe and the contour of the cutoff of the end part 9 of the gas receiver 8 form an angle of 90 °. Along the contour of the cutoff of the end part 9 of the gas receiver 8, between the middle channels 3, a reduction is made 10. The middle inlet channels 7 of the gas receiver 8 are oval in vertical section and a bent in the form of a “half ring” 13 is made on the upper 11 and lower 12 half-bodies. The inlet gas receiver 8 , the catalyst portion 14 and the outlet portion 15 are integral parts of the catalyst housing and constitute a single unitary structure. An outlet flange 16 is fixed at the end of the outlet portion 15. The catalyst housing has a length that allows the installation of a 5 '' (127 mm) catalyst. A control sensor 17 is mounted on the catalyst housing, in such a way that the distance L from the lower end of the sensor to the end surface 19 of the catalyst 21 is not more than 33.42 mm.

Thermal shielding gaskets 18 are placed inside the catalyst housing for fixing which in the half-shells 11 and 12 clamps 20 are made, directed towards the catalyst 21, four of which are located on the upper floor of the housing 11 and six on the lower floor of the housing 12.

A silencer exhaust pipe with a converter is designed to ensure compliance with toxicity standards according to UNECE Regulation 83-05 (B) (Euro 4) and UNECE Rule 83-06 (Euro5 +) and is applied as follows. The pipe is mounted on a car engine. The exhaust gas flow through the pipes 2 and 3 of the collector part enters the paired inlet channels 6 and 7 of the gas receiver 8. Due to the shape of the middle inlet channels 7 of the gas receiver 8 and bent in the form of a half ring 13 on the half-shells 11 and 12, the exhaust gas deviates downward to the center catalyst 21, which provides improved "washing" of the control sensor 17, which provides the desired signal for the preparation of the combustible mixture. Next, the exhaust gas stream enters the catalyst part 8 and, mixing, uniformly covers the largest surface of the catalytic unit, where the catalysis process takes place, which allows you to clean the exhaust gases from CO, CH, NOx. The cleaned exhaust gases through the outlet 14 and the flange 15, to which the exhaust system 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 stepped pipes connected to the inlet gas receiver of the catalyst part, which also has a control sensor and an outlet part with an exhaust flange, characterized in that both end pipes have pipe deformation in the form of dents symmetrically located relative to the central axis of the pipe, and there is compression in the upper part of each pipe, moreover, the edge contour of the cut of the gas receiver part is configured so that the axis of the nozzle coincides with the axis of the inlet channel of the gas receiver and the axis of the nozzle and the edge circuit of the end of the gas receiver are at an angle of 90 °, and along the edge contour of the end of the gas receiver between the middle channels an undershot is made, while the middle entrance channels of the gas receiver they have an oval shape in vertical section and on the upper and lower half-shells of the gas receiver there are half-rings, and the catalyst housing, assembled from two half-shells, represents battle a single design consisting of an inlet gas receiver, a catalyst part and an output part, at the end of which an exhaust flange is fixed, and the catalyst housing has a length that allows the installation of a 5 "(127 mm) catalyst, and a control sensor is installed on the catalyst housing, which offset to the end surface of the catalyst in such a way that the distance L from the lower end of the sensor to the end surface of the catalyst is not more than 33.42 mm, and clamps directed to Ron catalyst, of which four are located in the upper half shell and six - in the lower half shell.

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