RU178747U1 - CATALYTIC COLLECTOR OF THE EXHAUST GAS SYSTEM OF THE INTERNAL COMBUSTION ENGINE - Google Patents

Abstract

The utility model relates to the field of mechanical engineering, mainly to the automotive industry, in particular to means for reducing the toxicity of exhaust gases of internal combustion engines (hereinafter ICE). The catalytic collector of the exhaust system of the internal combustion engine, containing a branched flow line, consisting of separate gas conduits, is inextricably connected to catalytic manifold mounting flange for mounting on an internal combustion engine housing, with which o the inlet ends of the gas conduits are connected, the outlet ends of which converge in a common gas reception chamber, inside which there are guide channels of gas flows corresponding to the gas conduits, and in the upper part there is a mounting element of the oxygen control sensor, while the gas reception chamber is inextricably interfaced with the casing of the catalytic carrier, at the outlet of which a gas mixing chamber is mounted with a connecting flange for fastening the catalytic manifold to the elements of the exhaust system the exhaust gas of the internal combustion engine, the mounting element of the diagnostic sensor, and the branched flow pipe and the connecting flange and the gas reception chamber connected to it, the gas mixing chamber and the flange for attaching the catalytic manifold to the elements of the exhaust system of the internal combustion engine are made of cast iron. model allows to achieve a technical result, which is to reduce the noise of the exhaust gas exhaust in D C using a gas mixing and gas inlet chambers catalytic collector made of iron.

Description

Technical field

The utility model relates to the field of mechanical engineering, mainly to the automotive industry, in particular to means for reducing the toxicity of exhaust gases of internal combustion engines (hereinafter ICE).

State of the art

Utility model protected by patent No. 91110 U1 was chosen as an analogue. The catalytic collector of the exhaust system of an internal combustion engine, IPC F01N 3/28, which was published on January 27, 2010. The ICE catalytic manifold contains a branched flow pipe composed of separate nozzles, the number of which corresponds to the number of ICE cylinders, the input ends of which are fixed in the connecting flange of the catalytic manifold to the ICE housing, and the output ends on a common gas receiving chamber provided with an installation element for the oxygen control sensor, and telescopically inseparably coupled to the housing of the catalytic carrier, made in the form of at least one gas-permeable block, to the exit where a gas mixing chamber made of two shapedly stamped and permanently connected along the longitudinal axis of the halves, equipped with an oxygen diagnostic sensor mounting element and a mounting flange for attaching to the engine exhaust path, the flow pipe and gas receiving chamber made together of two shaped stamped and one-piece halves interconnected along the longitudinal axis. A distinctive feature is that the catalytic support is made in the form of a ceramic block and is equipped with a heat-insulating gasket which is tightly pressed into the housing of the catalytic support along the outer side surface of the catalytic support body ..

As an alternative, it was chosen, protected by patent No. 120467, IPC F01N 3/28, published on September 20, 2012, utility model Catalytic manifold of the exhaust system of an internal combustion engine, in particular a four-cylinder in-line containing a branched flow pipe, a connecting flange for fastening the catalytic manifold to the body of the internal combustion engine, to which the inlet ends of the aforementioned gas conducting pipes are fixed, the outlet ends of which converge in a common stamped gas I have a chamber in the walls of which gas flow guides corresponding to gas-conducting pipes are formed, an installation element of an oxygen control sensor mounted in a narrowed section of a gas reception chamber, coupled to a catalytic support housing, at the outlet of which a gas mixing chamber is provided, equipped with an installation element for an oxygen diagnostic sensor, an attachment flange catalytic collector to other elements of the engine exhaust system Cored oil combustion.

The disadvantages of the known solutions are that the catalytic carrier in the cross section is made in the form of an oval, the thermally expanding gasket located between the housing and the block does not have a constant density due to the difference in the radii of the ellipse, which in turn leads to a decrease in the collector resource, and the installation element of the control sensor oxygen is not optimally located, because it is not in the zone of convergence of gas flows, which makes it difficult to configure the electronic engine control system and increases fuel consumption.

The closest in technical essence and the achieved effect is protected by patent No. 135726 U1, IPC F01N 3/28, utility model published on December 20, 2013 Catalytic manifold of the exhaust system of an internal combustion engine.

The catalytic collector of the exhaust system of an internal combustion engine, comprising a branched flow pipe made of separate gas conduits, a connecting flange for attaching the catalytic collector to the body of the internal combustion engine, to which the inlet ends of the gas conduits are fixed, the output ends of which converge in a common gas reception chamber, in the walls of which the gas flow guides corresponding to the gas conducting pipes are formed, set the control element of the oxygen control sensor, the gas reception chamber is interfaced with the catalytic support housing, at the outlet of which the gas mixing chamber is mounted, the connecting flange of the catalytic manifold to the other elements of the exhaust system of the internal combustion engine, the mounting element of the oxygen control sensor is located on the upper wall of the gas reception chamber in the center between the outlet ends of the gas conduits, and the diagnostic mounting element yes oxygen sensor - on the side wall of the housing of the catalytic carrier.

The disadvantages of this technical solution is the following:

1. the use of stainless pipes and sheet metal in the manufacture of gas reception and gas mixing chambers of the catalytic collector entails an increased noise level at the engine’s working speed, which reduces the consumer characteristics of the car as a whole;

2. the location of the diagnostic sensor on the housing of the catalytic carrier is structurally impossible when using the catalytic carrier (substrate) in the form of a monoblock.

Utility Model Disclosure

The technical problem lies in the creation of a catalytic collector with a low noise level at the engine speed and increasing the consumer characteristics of the car as a whole.

The technical result is aimed at reducing the noise of the exhaust gas exhaust in the internal combustion engine when using the gas reception and gas mixing chambers of the catalytic manifold made of cast iron.

The technical result is achieved by the fact that the catalytic manifold of the exhaust system of the internal combustion engine, comprising a branched flow pipe, consisting of separate gas conduits, is inextricably connected to the mounting flange of the catalytic manifold for installation on the body of the internal combustion engine, to which the inlet ends of the gas conduits are inextricably connected , the output ends of which converge in the gas reception chamber, inside which there are corresponding gas leading pipes of the gas flow channels, and in the upper part is the mounting element of the oxygen control sensor, while the gas reception chamber is inextricably interfaced with the catalytic carrier housing, at the outlet of which a gas mixing chamber is mounted with a connecting flange for attaching the catalytic manifold to the elements of the exhaust system of the internal combustion engine , the installation element of the diagnostic sensor, and a branched flow line and connected to it coupling the flange and the gas inlet chamber, Gas mixing chamber and connected thereto manifold mounting flange to elements of the catalytic combustion engine exhaust system made of cast iron.

The essence of the utility model is illustrated by the drawing, which shows a General view with a local section of the catalytic manifold of the exhaust system of the internal combustion engine, where

1. connecting flange;

2, 3, 4, 5. gas conducting pipes;

6. the housing of the gas intake chamber;

7. installation element of the control oxygen sensor;

8. the housing of the catalytic carrier;

9. a catalytic carrier;

10. the body of the gas mixing chamber;

11. The installation element of the diagnostic sensor;

12. connecting flange.

Utility Model Implementation

The catalytic manifold of the internal combustion engine exhaust system, in particular the four-cylinder in-line, contains a connecting flange 1 for attaching the catalytic manifold to the connecting plane of the head of the internal combustion engine block (not shown), a branched flow pipe made of separate gas conducting pipes 2, 3, 4, 5 (the last two - not shown), the housing of the gas reception chamber 6, on which the mounting element 7 of the control oxygen sensor is mounted. The housing of the gas receiving chamber 6 is interfaced with the housing 8, in which the catalytic carrier 9 is installed in the form of a monoblock. At the outlet of the casing of the catalytic carrier 8, a casing of the gas mixing chamber 10c is mounted, located on the lateral surface with the mounting element of the diagnostic sensor 11, and at the exit, with a connecting flange 12 for attaching the catalytic manifold to the remaining elements of the exhaust system of the internal combustion engine.

The catalytic manifold of the engine exhaust system works, as in the selected prototype, in the usual way for this type of device. Exhaust gases come from internal combustion engine cylinders (not shown) through separate gas supply pipes 2-5 of a branched flow pipe into a gas intake chamber 6, pass through a catalytic carrier 9 (substrate) in the form of a monoblock 9, where toxic substances are cleaned to the required level, and then through the gas mixing chamber 10 are discharged into the exhaust system of the vehicle.

Using the claimed technical solution allows you to create an inexpensive and compact design of an effective catalytic collector, increase the competitiveness of domestic cars by reducing the noise of exhaust gases in the internal combustion engine when using the upper and lower gas reception chambers of the catalytic collector made of cast iron. The proposed design of the catalytic collector allows its use on eight- and sixteen-valve ICEs manufactured by PJSC AvtoVAZ.

Claims (1)

The catalytic manifold of the exhaust system of an internal combustion engine, comprising a branched flow pipe consisting of separate gas conduits, is inextricably connected to the mounting flange of the catalytic manifold for installation on the body of an internal combustion engine, to which the inlet ends of the gas conduits are inextricably connected, the output ends of which converge into gas receiving chamber, inside of which there are gas guide channels corresponding to gas conducting pipes outflow flows, and in the upper part there is an installation element of a control oxygen sensor, while the gas reception chamber is inextricably interfaced with the catalytic support housing, at the outlet of which a gas mixing chamber with a connecting flange for attaching the catalytic manifold to the elements of the exhaust system of the internal combustion engine is mounted, the installation element is diagnostic sensor, characterized in that the branched flow line and the connecting flange connected to it and a gas reception chamber, a gas mixing chamber and a flange for attaching the catalytic collector to the elements of the exhaust system of the internal combustion engine connected to it are made of cast iron.

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