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.
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.
FIELD: mechanical engineering; internal combustion engines.
SUBSTANCE: proposed catalyst converter contains housing with inlet and outlet branch pipes, screens with catalyst, cup whose spaces are filled with metal chips of stainless steel wire, molybdenum or tungsten, and ring to control portions of gas flows passing through different spaces by overlapping gas outlet holes in greater or smaller degree. Catalyst is made in form of porous tablets, porous ceramic or perforated metal tape with catalytically active materials applied to its surface.
EFFECT: increased efficiency.
2 cl, 1 dwg
FIELD: transport engineering.
SUBSTANCE: invention can be used in exhaust systems of internal combustion engines. Claim contains description of housing for cellular element with tubular casing having inner wall. To prevent nondetachable connection of tubular casing with cellular element it has passive film at least on some section of its inner wall. Description of method of manufacture of carrier of catalyst converter with cellular element and housing proposed by invention is also given in claim. Carrier of catalyst converter manufactured using proposed method prevents thermal stresses between cellular element and tubular casing and provides possibility of soldering, including vacuum soldering.
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.
SUBSTANCE: invention relates to engine exhaust systems. Proposed carrier of catalyst converter has honeycomb member made of metal sheets. Said honeycomb member is axially extended, and metal sheets, at least partially are either structurized or profiled to form passage channels for exhaust gases. Carrier is provided also with tubular casing with edge and axial extent. Axial extent of tubular casing is less than axial extent of honeycomb member, and tubular casing, at least on one separate axial section is nondetachably connected with honeycomb member. Carrier is provided with bushing whose axial length is less than axial extent of honeycomb member, said bushing is located on outer part of honeycomb member near its end face and it has inner side surface which is nondetachably connected from side of said end face with radially external end sections of metal sheets of honeycomb member. Said honeycomb member projects in axial direction beyond the edge of tubular casing, and said projecting part of honeycomb member is enclosed in bushing. Description of design of converter with such carrier is provided.
EFFECT: prevention of stresses between honeycomb member and tubular casing even at high thermal load on carrier.
15 cl, 7 dwg
FIELD: mechanical engineering; internal combustion engines.
SUBSTANCE: invention can be for cleaning exhaust of compression ignition internal combustion engines. Proposed cassette catalyst converter has housing with external and internal walls with thermal insulation between said walls, solid particles filtering unit, porous penetrable cerement catalyst oxidizing, reducing and oxidizing-reducing units, cross partitions with through and blind ports, inlet and outlet branch pipes. Porous filtering unit for solid particles and porous penetrable cermet catalyst oxidizing, oxidizing-reducing and reducing and installed in series in pairs into through and blind ports of cross partitions to form cassettes. Each following partition is turned relative to longitudinal axis of converter, relative to preceding partition, through angle equal to 180°. Each unit is arranged in through and blind ports of partitions of its cassette.
EFFECT: improved efficiency of cleaning of exhaust gases, increased economy of engine, reduced consumption of fuel, increased service life and improved manufacturability.
FIELD: automotive industry.
SUBSTANCE: cellular member comprises at least partially shaped foil sheets defying flowing passages for predominantly exhaust gases generated in operating the internal combustion engine and at least one socket for the pickup. The method comprises making recesses in at least one of the foil sheets and stacking or/and rolling the foil sheets to define a cellular structure. At least one foil sheet is mounted so that to define at least one socket in the cellular member. The sheets are housed in the tubular casing provided with an opening. The foil sheets are interconnected and/or connected with the tubular casing to define an integral structure.
EFFECT: enhanced adaptability to production.
FIELD: removal of soot particles from exhaust gases during operation of internal combustion engines.
SUBSTANCE: proposed method consists in passing the exhaust gas flow through flow-type trap. Some particles are entrapped in trap in swirled state during such period of time when probability of their interaction with nitrogen dioxide contained in exhaust gases exists till complete elimination of entrapped particles. Trap has flow passages for free flow of exhaust gases for forming swirling or dampening zones.
EFFECT: avoidance of choking of trap by solid particles, thus ensuring continuous regeneration; reduced losses of pressure in trap.
9 cl, 3 dwg
FIELD: mechanical engineering; compression ignition internal combustion engines.
SUBSTANCE: proposed sectional catalytic converter has housing with catalytic filtering elements, cross partitions with slots and inlet and outlet branch pipes. Catalytic and filtering elements installed in slots of cross partitions are made in form of assembly sections of radial plates made of porous permeable cermet materials with filtering oxidizing and or filtering reducing properties. Cross partitions are made in from of sector-shaped plates alternating with slots so that slot of other end face of this section is arranged opposite to sector-shaped plate of other end face of assembly section. Each radial plate is fitted in slots of sector-shaped plates.
EFFECT: improved efficiency of cleaning of exhaust gases by developing areas of filtering and catalytic elements, reduced fuel consumption by decreasing counterpressure at engine exhaust and provision and provision of high quality of exhaust gas cleaning.
FIELD: purifying gas emissions.
SUBSTANCE: device comprises heat exchanger, heater, and catalytic neutralizer, which are connected in series in the direction of the flow of air or gases to be purified. The outlet of the neutralizer is connected with the heat exchanger. The heat exchanger is used for initial heating of the air or gases that inflow to the heat exchanger. The heat collecting device is provided with gages for measuring the temperature of the heat collecting material and the temperature of the purified air or gas and with the heating system connected with the control system.
EFFECT: reduced power consumption.
FIELD: mechanical engineering; catalytic converters.
SUBSTANCE: invention contains description of method of manufacture of cellular member with preset number (n) of metal sheet layers which are made from metal strip wound off at least one coil and least part of which is at least partially profiled metal sheets whose profile structure provides possibility of flow of liquid medium through cellular member which accommodates common free space of preset volume for sensor. According to proposed method, section of metal strip wound off coil is chosen to get metal sheet of corresponding dimensions, identificator is assigned to metal sheet according to which data are read off from memory concerning position of at least one of holes made in said metal sheet and on its outline. Before proceeding with manufacture of cellular member, at least one hole in preset position and with preset outline is made in metal sheet, and several such preliminarily made sections are coiled, assembled into pack and/or rolled to form cellular structure in which separate holes form free space for sensor. Device for making cellular member and catalytic converter carrier are also described in invention.
EFFECT: provision of free space corresponding to dimensions of sensor within the limits of existing production process, prevention of formation of free space of too large volume in cellular member at reduced cost.
19 cl, 4 dwg