RU107550U1 - CATALYTIC ENGINE EXHAUST SYSTEM NEUTRALIZER - Google Patents

Abstract

 A catalytic converter of the engine exhaust system comprising a housing with a gas reception and gas mixing chambers, in which a discharge pipe with a flange is fixed to the gas mixing chamber of the converter housing, two receiving pipes connected parallel to each other and to the longitudinal axis of the converter and equipped with a common flange fixed to the gas converter on the exhaust manifold of the internal combustion engine and located at opposite ends of the exhaust pipes, characterized in that the converter is equipped with a compensated oscillation rum installed between the flange and the converter housing.

Description

The utility model relates to mechanical engineering, in particular, to the converters of the exhaust system of vehicles.

Known catalytic manifold of the exhaust system of an internal combustion engine containing two flow pipes, a common gas receiving chamber, a catalytic support housing and a gas mixing chamber, (see, m. RU No. 30855, CL F01N 7/10, 3/28 from 12/20/2002 ),

The disadvantage of this design is the uneven temperature mode of operation of the converter, due to the fact that the catalytic collector is installed in the immediate vicinity of the engine.

A known exhaust system in which a catalytic converter is used. The exhaust system includes two exhaust pipes that are connected to a pair of engine inlets and a common downstream exhaust pipe. Such a bifurcated exhaust pipe, for example, is used in a horizontal engine with an opposed cylinder arrangement. A catalytic converter is connected to each end of the two exhaust pipes connected to the inlet of the catalytic converter and connected to the end of a common exhaust pipe located at the outlet of the catalytic converter (see US Patent No. 4215093, IPC 7 F01N 3/28, 1980).

The disadvantage of this catalytic converter is the narrow purpose only for horizontal engines with opposed cylinder arrangement. The lack of design is the lack of any means designed to dampen vibration of the engine. In addition, this arrangement of converter inlet openings reduces engine power.

A known exhaust system (exhaust gas) of an internal combustion engine with two separated flow channels of the collector corresponding to each stream in which each of the substreams is separately supplied to the catalytic converter. The ends of each collector channel adjacent to the converter are axially movable (see German Application No. 10261880, IPC 7 F01N 3/28, 2004).

This technical solution allows to reduce vibration loads from the engine, however, the disadvantage of this solution is the design complexity.

A known catalytic converter of an engine exhaust system comprising a housing with a gas reception and gas mixing chambers, a branch pipe with a flange is fixed to the gas mixing chamber of the converter housing. The converter is equipped with two receiving pipes entering the gas receiver chamber of the converter, located parallel to each other and along the longitudinal axis of the converter. At the opposite ends of the receiving pipes, a common flange is made, mounted on the exhaust manifold of the internal combustion engine (see RF patent No. 55428 U, IPC F01N 3/28 (2006.01), 2006).

The disadvantage of this solution is the lack of any means designed to dampen vibration and compensate for vibrations transmitted from the engine and converter to the exhaust system (exhaust gas) and then the body to the car.

The task solved by the utility model is the reduction of vibrations and vibrations transmitted from the engine and the converter to the car body through the exhaust system, cheaper design, as well as an increase in the efficiency of the CBOG due to the uniform distribution of exhaust gas flows into two equal-parallel parts.

The problem is solved due to the fact that in the known catalytic converter of the engine exhaust system comprising a housing with a gas reception and gas mixing chambers, in which a branch pipe with a flange is fixed to the gas mixing chamber of the converter housing, two receiving pipes are connected to the gas receiving chamber of the catalyst parallel to each other and the longitudinal axis of the catalyst and equipped with a common flange mounted on the exhaust manifold of the internal combustion engine and located at opposite ends of the receiving t rub, in accordance with a utility model, the converter is equipped with an oscillation compensator installed between the flange and the converter housing.

The technical result from the use of all the essential features of the utility model is to reduce the vibrations transmitted from the engine and the converter to the car body through the exhaust system, which improves the consumer qualities of the car.

In addition, the use of a utility model makes it possible to increase the degree of purification of exhaust gases from chemically harmful components to a level that complies with international Euro-3, Euro-4, and Euro-5 standards.

The presence of an oscillation compensator installed between the flange and the converter body reduces vibration loads transmitted to the car body through the exhaust system.

In addition, the use of one KN unit and the presence of two parallel pipes at the catalyst inlet reduces the resistance of exhaust gases, which entails an improvement in engine performance, since minimizes the impact on its power.

Separation of flows entering the catalyst parallel to each other and perpendicular to the transverse plane of the catalyst allows to increase the efficiency of the converter and, accordingly, to increase the degree of purification of exhaust gases from chemically harmful components to a level that complies with international standards Euro-3, Euro-4, Euro-5 .

Figure 1 - General view of the catalytic converter assembly with receiving pipes

Figure 2 is a top view.

The catalytic converter of the engine exhaust system comprises a housing 1 with a gas receiving chamber 2 and a gas mixing chamber 3. The housing 1 of the catalytic converter can be oval and carries one converter block.

With the gas reception chamber 2 of the converter are connected two receiving pipes 4, 5 located parallel to each other and the longitudinal axis X of the converter. The receiving pipes 4, 5 are equipped with a common flange 6, mounted on the exhaust manifold of the internal combustion engine (not shown conditionally) and located at opposite ends of the receiving pipes 4, 5.

On the gas mixing chamber 3 of the housing 1 of the Converter is fixed by means of a welded joint outlet pipe 7 with the flange 8. Between the flange 8 and the housing 1 of the Converter installed vibration compensator 9.

The converter housing 1 is provided with at least one protective shield 10 mounted relative to the housing 1 with a guaranteed clearance. The gas reception chamber 2 is equipped with a mounting element 11 in the form of a nut for mounting a diagnostic sensor. A similar mounting element 11 for mounting a diagnostic sensor is located on the branch pipe 7.

The size of the catalytic converter is optimized based on engine size.

This embodiment of the utility model allows to ensure the achievement of higher power performance of the engine and the reliability of the converter due to its rational location relative to the engine.

KN works in the usual way.

During the operation of the internal combustion engine and each exhaust stroke, the exhaust gases (exhaust gases) through the intake pipes 4, 5 enter KH 2 from the side of the gas receiving chamber 2. Next, the gas passes through a catalytic carrier located in the housing 1 KN.

Since a more efficient type of catalytic support is used in the SC, the implementation of its oval shape, shortened and consisting of one unit, does not impair the quality of gas purification. Moreover, reducing the length of the SC due to the placement of one block of the catalyst contributes to a more rapid heating of the catalytic support and its more efficient operation.

As a result of redox reactions, using a catalytic carrier, the exhaust gas is cleaned of harmful components (CO, CH, NOx). Next, the purified gas enters the conical gas mixing chamber 3 KN, and through the outlet pipe 7 then enters the mufflers of the vehicle exhaust system (not shown). Since a vibration compensator 9 is installed between the pipe 7 and the flange 8, a more effective reduction in vibration loads transmitted to the exhaust system and to the car body is provided.

Using the claimed technical solution allows you to create an inexpensive and compact design of an effective catalytic converter, increase the competitiveness of domestic cars by meeting their environmental safety with international standards at the Euro-4 level, reduce air pollution in settlements with toxic exhaust gas components of vehicles, the power unit of which is based on ICE, reduce vibration loads on the exhaust system and on the car body.

The catalytic converter can be manufactured on known technological equipment using known technologies, materials, as well as purchased products.

Claims (1)

A catalytic converter of the engine exhaust system, comprising a housing with a gas reception and gas mixing chambers, in which a discharge pipe with a flange is fixed to the gas mixing chamber of the converter housing, two receiving pipes connected parallel to each other and to the longitudinal axis of the converter and equipped with a common flange mounted on the exhaust manifold of the internal combustion engine and located on opposite ends of the exhaust pipes, characterized in that the converter is equipped with a compensated oscillation rum installed between the flange and the converter housing.