Exhaust gas control apparatus

FIELD: engines and pumps.

SUBSTANCE: invention relates to purification of internal combustion engine exhaust gases. Exhaust gas composition control apparatus includes an exhaust passage, a urea water tank, a urea adding valve, a urea pump, a pipe, and an electronic control unit. Electronic control unit is configured to drive the urea pump to perform a filling control when a condition requiring an execution of urea water addition to the exhaust gas in the exhaust passage by the urea adding valve is satisfied so that the pipe is filled with the urea water. Electronic control unit is configured to execute filling control when an exhaust pressure of the exhaust passage is equal to or less than a specified value. Electronic control unit is configured to stop the filling control when the exhaust pressure of the exhaust passage exceeds the specified value during execution of filling control.

EFFECT: invention will enables to prevent pump operation associated with an unnecessary filling operation.

4 cl, 2 dwg

 



 

Same patents:

FIELD: engines and pumps.

SUBSTANCE: control device for an internal combustion engine includes the following: a solid particle sensor installed in an exhaust pipe of an internal combustion engine, a filter for catching particles, which can catch solid particles contained in exhaust gas and is located in the exhaust pipe at the point upstream relative to the solid particle sensor; an electronic control unit that can detect the amount of particles in the exhaust gas through the exhaust pipe in response to an output signal of the solid particle sensor; an electronic control unit having a possibility of supplying particle capture voltage between electrodes of the solid particle sensor during the first period so that a layer of particles can be formed on surfaces of electrodes of the solid particle sensor; and an electronic control unit having a possibility of stopping particle capture voltage supply during the second period so that the layer of particles can be maintained, and an electronic control unit that can perform control by detection of a failure in order to determine whether there is a failure of the filter for particle catching or not. The first period represents a period between completion of control by detection of the failure and the moment when the output signal of the solid particle sensor achieves a reference output signal. The second period represents a period between the moment when the output signal of the solid particle sensor achieves the reference output signal.

EFFECT: improved serviceability of a control unit and high measurement accuracy of the amount of solid particles.

9 cl, 7 dwg

FIELD: instrumentation.

SUBSTANCE: invention can be used for monitoring of a condition of the catalyst of the internal combustion engine exhaust gases. The method of assessment of the index (I) of aging of the catalytic device (K) consists in determination of the working temperature (T) of the catalyst. The aging factor (F) is determined against the working temperature (T), the period of time (t) during which the catalytic device was at a working temperature (T) is determined. Then the accompanying aging coefficient (C) is determined against the aging factor (F) and the period of time (t), and the total aging parameter (P) is increased by means of adding of the accompanying aging coefficient (C).

EFFECT: improvement of accuracy of determination of overall performance.

12 cl, 3 dwg

FIELD: transport.

SUBSTANCE: proposed air cleaner comprises vehicle structural part with air intake and air discharge hole, internal flow channel communicating air intake with air discharge hole and ozone cleaning element. Ozone cleaning element is applied on internal flow channel wall to clean ozone by converting it into other substances. Amount of applied ozone cleaning element on the side of air intake is larger than that applied on the side of air discharge hole. Thus, probability of active oxygen contact with activated carbon can be reduced.

EFFECT: creation of DOR-system to prevent deterioration of ozone cleaning function.

9 cl, 10 dwg

FIELD: transport.

SUBSTANCE: set of inventions relates to vehicle devices. Insert for holder in aftertreatment unit for exhaust gases of internal combustion engine contains bushing for treatment component intended for passing exhaust gases through it which gases should be treated, connecting facilities to hold insert in required position in holder, and seals for gas-tight sealing of bushing relative to holder. The seals contain O-ring on bushing to interact in self-aligning fitment engagement with opposite O-ring in the holder. The O-ring is located in angular notch of bushing, while connecting facilities contain threaded connection having male thread on the bushing for engagement with thread on holder, where external end of bushing has notch located at the periphery for connecting and disconnecting tool.

EFFECT: higher reliability of sealing in connection.

8 cl, 8 dwg

FIELD: engines and pumps.

SUBSTANCE: diesel system comprises diesel, NOx emission reducer arranged downstream of the engine, exhaust line between said engine and said NOx emission reducer. Besides, it comprises bypass line with first end connected to discharge line upstream of NOx emission reducer and bypass valve connecting discharge line with bypass line. Note also that said bypass valve directs offgas flow from discharge line into NOx emission reducer in open state and inhibits from discharge line into said reducer in closed state to allow the flow from discharge line into bypass line. Note that controller can be used for bypass valve opening and closing when engine operating conditions reach preset level.

EFFECT: efficient operation of NOx catalytic reduction unit or catcher.

19 cl, 1 dwg

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing cerium dioxide nanoparticles and use thereof. Described is a method of producing cerium dioxide nanoparticles with a given lattice, which contain at least one transition metal (M), wherein: (a) an aqueous reaction mixture is prepared, said mixture containing a source of Ce3+ ions, a source of ions of one or more transition metals (M), a source of hydroxide ions, at least one nanoparticle stabiliser and an oxidant which oxidises the Ce3+ ion to a Ce4+ ion, at initial temperature ranging from about 20C to about 95C; (b) mechanical shearing of said mixture and passing said mixture through a perforated sieve to form a homogeneously distributed suspension of cerium hydroxide nanoparticles; and (c) creating temperature conditions that are effective for oxidation of the Ce3+ ion to a Ce4+ ion to form a product stream containing cerium dioxide nanoparticles, containing a transition metal Ce1-xMxO2, where x assumes a value from about 0.3 to about 0.8, said nanoparticles have a cubic fluorite structure, average hydrodynamic diameter ranging from about 1 nm to about 10 nm and geometric diameter from about 1 nm to about 4 nm, wherein the nanoparticle stabiliser is water-soluble and has a value Log KBC ranging from 1 to 14, where KBC denotes a constant for binding the nanoparticle stabiliser to a cerium ion in water and said temperature conditions that are effective for oxidation of the Ce3+ ion to a Ce4+ ion include temperature from about 50C to about 100C. Described is a method of preparing a homogeneous dispersion containing stabilised crystalline nanoparticles of cerium dioxide with a given lattice, containing a transition metal, Ce1-xMxO2, where M is at least one transition metal and x assumes a value from about 0.3 to about 0.8; (a) preparing an aqueous mixture which contains stabilised cerium dioxide nanoparticles containing a transition metal, Ce1-xMxO2, having a cubic fluorite structure, wherein, wherein said nanoparticles have average hydrodynamic diameter ranging from about 1 nm to about 10 nm and geometric diameter less than about 4 nm; (b) concentrating said aqueous mixture containing said stabilised cerium dioxide nanoparticles containing a transition metal, thereby forming an aqueous concentrate; (c) removing essentially all water from said aqueous concentrate to form an essentially water-free concentrate of stabilised cerium dioxide nanoparticles containing a transition metal; (d) adding an organic diluent to said essentially water-free concentrate to form an organic concentrate of said stabilised cerium dioxide nanoparticles containing a transition metal; and (e) merging said organic concentrate with a surfactant in the presence of a nonpolar medium to form said homogeneous dispersion containing stabilised crystalline nanoparticles of cerium dioxide containing a transition metal, Ce1-xMxO2, where M and x assume values given above. Described is a deposited coating for the catalytic converter of the exhaust system of an internal combustion engine, where said deposited coating is obtained using said homogeneous dispersion.

EFFECT: catalyst that is efficient for a reduction or oxidation reaction is described, where said catalyst is obtained using said homogeneous dispersion.

44 cl, 9 dwg, 2 tbl, 8 ex

FIELD: engines and pumps.

SUBSTANCE: system 1 to process waste gases formed in operation of preset capacity ICE 2 comprises waste gas circulation pipeline 4. Waste gases flowing in said pipeline in direction 9 interact with turbosupercharger 5. Gause layer 6 is arranged upstream of said turbo supercharger. Cross section area of said layer exceeds averaged cross section area 8 of pipeline 4. Proposed system differs from known designs in that said gauze layer 6 comprises woven screen made up of thin wires 11 with major part of openings 12 features width 13 varying from 0.1 to 0.25 mm, said wires incorporating different types of thin wires of varying thickness.

EFFECT: longer life, higher efficiency.

9 cl, 4 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to carrier housing for catalytically active coat used for afterpurification of automotive exhaust gases. Carrier housing 1 with total surface area 7 that has one section 8 of the coat with catalytically active coat 2 comprising at least one type catalyst elements 32 dispersed on surface 35 of carrier housing1. Note here that: catalyst elements 32 features mean spacing 34 along the surface equal to at least 3 mcm, surface 35 has mean roughness depth Rz equal to 2 to 10 mcm. Carrier housing 1 features maximum increase in head drop equal to 25% as compared with smooth-surface housing. Method of producing above described carrier housing 1 with total surface area 7 with at least one section 8 with catalytically active coat 2, comprises the following steps: a) preparing carrier housing 1 with smooth surface (35); b) determining head drop for said housing at preset ambient conditions; c) producing surface (35) with mean roughness depth Rz, equal to 2 to 10 mcm. Carrier housing 1 features maximum increase in head drop equal to 25% as compared with smooth-surface housing; d) arranging catalyst elements (32) dispersed along the surface with mean spacing 34 of at least 3 mcm. Invention covers also exhaust gas purification device 25 incorporating at least one carrier housing 1 produced as described above, and transport facility incorporating said device.

EFFECT: improved conversion of harmful substances in afterpurification of exhaust gases.

20 cl, 10 dwg

FIELD: transport.

SUBSTANCE: invention relates to exhaust gas purification catalysts, particularly to adsorbent intended for removal of hydrocarbons from exhaust gases in cold starting. Proposed adsorbent represents an organometallic MOF-5-type carcass structure with residues of terephthalic or biphenyl dicarboxylic acid that makes a linking element. Points of cubical lattice comprise clusters that represent fragments of inorganic metallate oxide polyhedrons containing ions of zinc, or copper, or cobalt.

EFFECT: efficient hydrocarbons adsorbent.

1 tbl, 1 ex

FIELD: power industry.

SUBSTANCE: device for conversion of waste gas components of internal combustion engine with the help of at least one catalyst and/or particle filter, and/or particle trap and for levelling of relative movements between internal combustion engine and waste gas path and/or relative movements of different parts of waste gas path with the aid of at least one compensating pipe that allows relative movements. Note that at least one catalyst for waste gas components conversion and/or at least one particle filter and/or at least one particle trap is located inside the compensating pipe (20.1-20.8, 20.X, 20.Y, 20.Z) and/or inside the part of waste gas path that is integrated with compensating pipe (20.1-20.8, 20.X, 20.Y, 20.Z). The outer diametre of catalyst and/or particle filter and/or particle trap is less or equal to the inner diametre of compensating pipe (20.1-20.8, 20.X, 20.Y, 20.Z).

EFFECT: decrease of structural size.

15 cl, 7 dwg

FIELD: engines and pumps.

SUBSTANCE: invention relates to batching of reducing agent to ICE exhaust gases. Proposed process of batching the urea-based reducing agent to used gas flow fed to directed to cleaning system 30 comprises provision of batching module with batching housing 20 extending in axis X. Said offgas flow is fed to said batching housing 20 by forming a circular inlet jet AJ inclined relative to said axis X of said housing 20. Said reducing agent is batched by producing a sprayed urea-based reducing agent jet UWS inside said housing 20. Offgas flow is fed into said housing 20 by making an axially symmetric circular inlet jet AJ inclined to said axis X of said housing 20.

EFFECT: complete decomposition of urea, uniform mixing of ammonia with offgas.

9 cl, 5 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to device for feed of reducing agent from tank to used gas cleaner. Device (1) for feed of reducing agent from tank (2) to used gas cleaner (3) for ICE (4) used gas neutralisation. Said device (1) has flange (8) confined by at least first side (10) and second side (11). Said sides (10) and (11) are arranged in mutual opposition. Filter (12) and ice pressure compensation displacing means (13) and/or ice pressure flexible compensation means (14) is/are arranged at said first side (10). Pump (15), pressure gage (16) and/or temperature gage (17) is/are arranged at second side (11).

EFFECT: higher reliability and frost resistance.

6 cl, (16 dwg

FIELD: heating.

SUBSTANCE: invention relates to SCR system for exhaust gases cleaning. The cooling method of the dosing unit (250) of the reducing agent after flow termination of the exhaust gases is performed by the reducing agent supplied in it. Method also contains work stage of the supply unit to feed the specified cooling reducing agent with power decreased in comparison with operation under standard mode. Invention also relates to software with program code (P) for computer (200; 210) to implement the method according to the invention. Besides, the invention relates to SCR system and mechanical transportation vehicle equipped with SCR system.

EFFECT: more effective cooling of the dosing unit of SCR system after flow termination of the exhaust gases in SCR system.

17 cl, 5 dwg

FIELD: engines and pumps.

SUBSTANCE: invention relates to reduction of diesel emissions. Diesel afterpurification system comprises diesel with exhaust manifold and filter substrate directly connected with exhaust manifold without whatever mid catalysts. Filter substrate inlet side includes selective catalytic reduction catalyst SCR including non-caking molecular sieve.

EFFECT: better filter recovery.

23 cl

Exhaust gas cleaner // 2553480

FIELD: engines and pumps.

SUBSTANCE: invention relates to automotive industry and can be used for purification of ICE exhaust gases. Proposed cleaner 1 incorporates exhaust gas removal component 3 of flow-through design in flow direction from oncoming flow side 4 to drain flow side 5. Reducing agent feed device 6 is arranged downstream of drain flow side 5 to feed said agent to sais cleaner 1. Said device 6 features feed direction 7 extending, at least partially, across flow direction 3. Drain flow side 4 of said component 2 is coated, at least partially, with porous ply 8. Said device 6 and said component 2 are spaced apart for distance 9 selected to make reducing agent 10 reach said porous ply 8. Said porous ply 8 includes metallic fabric or metallic nonwoven material. Invention discloses vehicle with ICE including said cleaner 1.

EFFECT: simplified mounting, improved distribution of reducing agent over flow cross-section.

10 cl, 3 dwg

FIELD: engines and pumps.

SUBSTANCE: proposed process uses the transducer signal of measurement of parameter relates to nitrogen oxides (NOx) in exhaust gases flowing from exhaust gas afterpurification device. The latter makes a part of exhaust gas afterpurification system to detect the amplitudes of transducer signal of measurements performed in a definite period of measurements and to add the reducing agent to exhaust gases in afterpurification device. Additionally, this process comprises the steps that follow. Added amount of reducing agent is varied in compliance with preset mode for measurement period. NOx content variation amplitude is detected downstream of exhaust gas afterpurification device. Detection and preservation of added amounts of reducing agent when NOx amplitude variations revealed in exhaust gases downstream of afterpurification device are carried out if these satisfy the criteria of optimum adjustment of added quantity. Besides, this invention relates to exhaust gas afterpurification system.

EFFECT: optimised operation of catalytic neutraliser.

25 cl, 5 dwg

FIELD: machine building.

SUBSTANCE: invention relates to the device for spent gases treatment in the output pipeline. Design (1) contains two devices (2, 3) installed one after another to clean the spent gas in the output pipeline (4). The first device (2) for the spent gas cleaning by the first partial area (5) via the at least one support element (6) is connected with the second partial area (7) of the second device (3) for spent gas cleaning. The support element (6) has opposite ends (9) and at ends (9) via the connecting points (8) is connected to the one partial area (5, 7), respectively. The second partial area (7) is created by metal components (10), that by means mutual contact create the contact surfaces (11). Maximum 20% of area of the contact surfaces (11) have at least soldered connections (12) or diffusion connections (13).

EFFECT: resistance to increased mechanical requirements during operation.

9 cl, 7 dwg

FIELD: transport.

SUBSTANCE: invention relates to method relevant to SCR systems for exhaust gases purification. The method relevant to SCR systems for exhaust gases purification includes following two phases: phase of making decision concerning necessity (exhaust gases flow termination) to cool reducing agent batching module (250) which is a part of SCR system by means of reducing agent being supplied to the module, and phase of prediction of temperature profile of the mentioned batching module (250) as the basis for making decision concerning mentioned necessity and proper prediction of weather predetermined temperature of batching module (250) is achieved after exhaust gases flow termination or not. Also, the proposed invention relates to computer software product containing program code (P) for computer (200; 210) designed for implementation of the method according to the invention. Besides, invention relates to SCR system and vehicle equipped with such SCR system.

EFFECT: higher efficiency of SCR system and lower risk of batching module overheating in SCR system after exhaust gases flow termination.

19 cl, 6 dwg

FIELD: measurement equipment.

SUBSTANCE: invention relates to fluid medium containers equipped with resistive elements. A container for content of certain amount of fluid medium in a tank. The above said container is provided with the first resistive element (R1) intended for heating of the first part of the above said tank and the second resistive element (R2) intended for heating of the second part of the above said tank. The above said second resistive element has a positive temperature coefficient. The above container also includes the third resistive element (R3) intended for heating of the above said second part of the specified tank. The above said second resistive element and the above said first resistive element form a parallel circuit, and the above said first resistive element is connected in series to the specified parallel circuit. The invention also describes a fluid medium tank for a transport vehicle, which contains a container, and use of circuits in the fluid medium tank for the transport vehicle.

EFFECT: addition of a freedom degree to the design, which provides the amount of energy, which dissipates in different parts of the tank.

9 cl, 4 dwg

FIELD: transport.

SUBSTANCE: invention relates to device to feed liquid reducer into exhaust gas neutralisation system. Proposed device (1) has tank (2) with inner chamber (3) and at least container (4) partially fitted in the tank (2) inner chamber (3). Container (4) outside is surrounded, at least, partially by filter (5) with filter area (6) and filter depth (7) while container (4) accommodates system (8) to feed reducer from tank (2) via filter (5) to reducer intake point (9). Reducer in tank (2) flows through filter (5) before getting inside tank (4), mainly before flowing through intake hole (16) into feed system (8). Invention covers also the carrier with such device (1).

EFFECT: higher reliability.

9 cl, 9 dwg

FIELD: transport.

SUBSTANCE: invention can be used in diesel engines of motor vehicles. A diesel engine (1) of a motor vehicle has a system (50) of waste gas recirculation as per the first route and a system (60) of waste gas recirculation as per the second route that is longer than the first route of the system (50) and a nitrogen oxide catcher (30). The nitrogen oxide catcher (30) is located prior to a particulate filter (31), operates on poor mixtures of the engine and is placed in the common outer housing (33) with the particulate filter (31). The nitrogen oxide catcher (30) has a carrier of a catalytic neutralising agent with a thin coating containing catalytic agents that serve as active sections for binding of nitrogen oxides contained in exhaust gases so that they can be caught in the nitrogen oxide catcher (30), and additionally containing other catalytic agents capable of reacting with hydrocarbons and carbon oxide, which are contained in the exhaust gases, and oxidising them to carbon dioxide and water.

EFFECT: technical result consists in the simpler layout of a recirculation system.

2 cl, 1 dwg

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