Catalytic converter exhaust gases of internal combustion engine

 

(57) Abstract:

The invention relates to mechanical engineering and can be used in the exhaust systems of internal combustion engines to reduce the content of toxic substances in exhaust gases. The invention is aimed at improving the efficiency of gas purification, improving the fuel efficiency of the internal combustion engine, simplifying the design of the Converter, the prolongation of life by automatically distributing the flow of gases. To achieve the specified design Converter automatic switchgear flow of gases, consisting of a coupling sleeve and spring, while the connecting pipe tightened the spring to the first reactor, in turn, the first reactor is communicated through the connecting pipe from the outlet, and a partition located between the connecting pipe and the exhaust pipe, allows the flow of gases to pass and not to create a back pressure to the exhaust more than nominal when the engine is at idling and partial load. 2 Il.

The invention relates to mechanical engineering and can be used in the exhaust systems divested Converter exhaust of the internal combustion engine (RF patent N2075605, CL F 01 N 3/28, 1997), comprising a housing with inlet and outlet nozzles, the first and second reactors with catalysts which are placed in series gas flow, the partition and automatic switchgear flow of gases.

The invention is aimed at improving the efficiency of gas purification, improving the fuel efficiency of the internal combustion engine, simplifying the design of the neutralizer, prolong its service by automatic distribution of the gas stream.

The solution of this problem is achieved by the fact that the design of the neutralizer advanced automatic switchgear flow of gases, consisting of a coupling sleeve and spring, while the connecting pipe tightened the spring to the first reactor, and a partition located between the connecting pipe and the exhaust pipe, allows the flow of gases to pass and not to create a back pressure to the exhaust more than nominal when the engine is at idling and partial load.

Distinctive features of the prototype is that in the device of neutralizer added AB is the flow of gases.

The change in the flow rate of exhaust gases occurs, depending on the load on the internal combustion engine. The frequency of rotation of the crankshaft of the engine can not be changed, therefore, the application of the switchgear of the gas stream with a mechanical drive, depending on the frequency of rotation of the crankshaft of the engine does not provide timely on and off of the second reactor of the catalytic Converter.

In Fig. 1 shows a neutralizer, a longitudinal section when the first reactor of Fig. 2 is a longitudinal section when the two reactors.

The Converter exhaust gas for an internal combustion engine includes a housing 2 with an inlet 9 and outlet 1 nozzles. In case 2 are the catalysts 8 and 4, fixed by spacers 10. The separation wall 11 forms a chamber of the first reactor 7 is connected to an outlet pipe 1 through the automatic switchgear flow of gases comprising biasing the chamber of the first reactor 7 by the spring 5 of the connecting pipe 6, which is firmly attached to the hole in the partition wall 11. Partition 3 enable the second reactor, located between the connection to create a back pressure to the exhaust more than nominal when the engine is at idling and partial load.

Does the catalytic Converter is as follows.

When the internal combustion engine at idling and partial load exhaust gases pass into the Converter housing 2 through the inlet pipe 9, are the first reactor 7, purifying, and through the connecting pipe 6 and the outlet 1 out of the Converter. This ensures cleaning of exhaust gases at low pressure of the exhaust gases, thereby improving the fuel efficiency of the internal combustion engine; increased service life of the Converter by turning off the second reactor 12.

When the engine is operating at medium to full load, i.e. when increasing the flow rate of exhaust gases, exhaust gases, overcoming the resistance of spring 5, push the connecting pipe 6 from the hole in the partition wall 11, and the connecting pipe 6 abuts against the end face of the partition wall 3 of the inclusion of the second reactor, stopping the passage of exhaust gases through the connecting pipe 6. Thus the exhaust gases that have passed the first reactor 7 through the opening in the partition wall 11 are received in the second reactor 12, are dopolnitelnoe 12 in a two-step purification of exhaust gases is used in order to reduce the back pressure of the exhaust gases of the internal combustion engine at idling and partial load to improve fuel economy. In addition, it reduces the contamination of the catalyst 4 neutralizer of toxic components of exhaust gases, thereby prolonging its service life.

When is too early inclusion of the second reactor 12 of the Converter, when the flow rate of exhaust gases is negligible, the increase in back pressure of the exhaust gases increases fuel consumption; additional contamination of the catalyst 4 of the second reactor 12 reduces the service life of the Converter. If a delay in the inclusion of the second reactor 12, when the flow rate of the exhaust gas is significant, and there is only one reactor Converter 7, deteriorating the cleaning of exhaust gases.

Application of automatic switchgear flow of gases allows us to ensure timely activation and deactivation of the second reactor 12 neutralizer.

Catalytic Converter exhaust gases of the internal combustion engine, consisting of a housing with inlet and outlet nozzles, the first and second reactors with catalysts which are placed in series gas flow, partitioning and automatic switchgear flow of gases, characterized in that the automatic distribution lye spring to the first reactor, in turn, the first reactor is communicated through the connecting pipe from the outlet, and a partition located between the connecting pipe and the exhaust pipe, allows the flow of gases to pass and not to create a back pressure to the exhaust more than nominal when the engine is at idling and partial load.

 

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FIELD: mechanical engineering; internal combustion engines.

SUBSTANCE: proposed exhaust gas catalytic converter of internal combustion engine contains housing with inlet and outlet branch pipes, several reactors with catalysts arranged in parallel with gas flow and exhaust gas distributor made in form of disk enclosed in case in front part of which in direction of gas flow and on outer surface of distributor diametric grooves are made with balls fitted in space of groove, so distributor is installed for movement relative to case with possibility of rotation under action of exhaust gas pressure. Slot is made in lower part of housing under distributor in which ball lock is fitted, and on outer surface of distributor, parallel of diametric groove, cavities are made for lock ball. Idle run sector is made on front end face wall of distributor whose angle is equal to angle of sector of catalytic reactor, and regenerative sector is placed in its space formed by two inner partitions and rear end face wall equal to two idle run sectors, gas flow rate adjusting gate installed for rotation relative to distributor under action of exhaust gas pressure, spring installed on axle and rigidly connected with gate in zone of no direct action of exhaust gases. Diametric vanes are installed on front end face wall of distributor at angle in direction opposite to direction of rotation of gas flow rate adjusting gate under action of exhaust gas pressure.

EFFECT: improved efficiency of exhaust gas cleaning.

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EFFECT: provision of compensation for difference in values of thermal expansion of cellular element and tubular casing.

28 cl, 4 dwg

FIELD: transport engineering; vehicle internal combustion engines.

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