917results about "Silencing apparatus" patented technology

Deterioration diagnostic device for an exhaust gas control catalyst, wherein the deterioration diagnostic device is configured to diagnose deterioration of the exhaust gas control catalyst which is provided in an exhaust port of an internal combustion engine and is configured to store oxygen, and wherein the deterioration diagnostic device comprises: a downstream air-fuel ratio sensor (43) configured to detect an air-fuel ratio of an exhaust gas that has flowed out of the exhaust control catalyst; and a control device (31) configured to control an air-fuel ratio of an exhaust gas flowing into the exhaust control catalyst and to diagnose deterioration of the exhaust control catalyst based on an output from the downstream air-fuel ratio sensor (43), wherein the control device (31) is configured in a deterioration diagnostic process to diagnose deterioration of the exhaust control catalyst to alternately and repeatedly perform a rich process and a lean process, wherein the rich process is a process in which the air-fuel ratio of the exhaust gas flowing into the exhaust control catalyst is controlled to a rich air-fuel ratio that is richer than a stoichiometric air-fuel ratio, and wherein the lean process is a process in which the air-fuel ratio of the exhaust gas flowing into the exhaust control catalyst is controlled to a lean air-fuel ratio that is leaner than the stoichiometric air-fuel ratio. to switch from the rich process to the lean process when the amount of oxygen released by the exhaust gas control catalyst since the start of the rich process equals the first amount of oxygen, and to switch from the lean process to the rich process when the amount of oxygen stored in the exhaust gas control catalyst since the start of the lean process equals the second amount of oxygen, which is lower than the first amount of oxygen, and to determine that the exhaust gas control catalyst has deteriorated when the lean process is carried out and a frequency at which an output air-fuel ratio of the downstream air-fuel ratio sensor (43) is equal to the lean air-fuel ratio is equal to or greater than a predetermined frequency.

The present application relates to a kind of fire diesel engine low temperature combustion efficiency promotion method.Fire diesel engine low temperature combustion efficiency promotion method, starting stage does not need to rely on external point heating equipment, preheating is carried out to intake and fuel respectively using exhaust waste heat and the integrated effect of repeated start, repeated heating under the control of multiple parameters, effectively guarantee the reliability of fast emergency start and emergency start under low temperature environment, through the integrated effect of ultrasonic atomization, multiple parameter collaborative control, effectively solve the problem of poor fuel atomization, mixture is not uniform, combustion is insufficient under low temperature condition, the combustion efficiency under low temperature condition is significantly improved, through the mutual coordination of residual humidity detection, ultrasonic auxiliary water removal unit in shutdown stage, the reliability of next start can be guaranteed.Therefore, the above-mentioned fire diesel engine low temperature combustion efficiency promotion method adapts to the scene demand of fire emergency without external power supply, fast response.

The utility model discloses an active acoustic sensor for an engine exhaust pipe, and particularly relates to the technical field of active noise reduction of exhaust pipes, the active acoustic sensor comprises an air inlet pipe, a positioning mounting plate, a sensor mounting joint and a sound acquisition module shell; the positioning mounting plate is obliquely fixed to the pipe wall of the air inlet pipe, and the air inlet pipe is fixedly connected with the exhaust pipe in a sealed mode through the positioning mounting plate. The sensor mounting connector is fixedly mounted at the end, away from the positioning mounting plate, of the air inlet pipe. The sound collection module shell is provided with a sound source channel, the sensor installation connector is detachably connected with the sound collection module shell, and the sound source channel is correspondingly arranged below the air inlet pipe. When the active acoustic sensor is used, the influence of high temperature on noise collection can be reduced.

An additional propulsion method and system (6) for a vehicle (1) equipped with a heat absorbing engine (5); wherein the propulsion system (6) has a manifold (7) with an internal cavity (19) which communicates with the outside through: a plurality of inlets (8), each configured to be connected to the heat absorbing engine (5) and, in use, to receive exhaust gases (g) emitted from the heat absorbing engine (5); and an outlet (9) configured to be connected to an exhaust line (10) to direct the exhaust gases (g) outside the vehicle (1); wherein a duct (18) at least partially covers the manifold (7) without contact, to form one or more channels (15, 15I, 15II) of air flow (f) along the external surface (12) of the manifold (7).

A working vehicle includes a fuel tank to store fuel, and a support base located on an outer side of a vehicle body in a left-right direction, the fuel tank being provided on the support base such that both left and right side portions of the support base are supported. Left and right inner side portions of the support base are supported by a clutch housing that houses a clutch, the left and right outer side portions of the support base are supported by a cabin support that supports a cabin, the cabin support is located above the support base, and the left and right outer side portions of the support base are supported by the cabin support through extensions extending upward from the left and right outer side portions of the support base.

When exhaust gas purification is performed using the exhaust particulate filter 17A, which also functions as a three-way catalytic converter, the accumulation of exhaust particulate matter reduces the oxidation performance of the three-way catalytic converter. [Solution] An exhaust particulate filter 17A, on which a three-way catalyst with oxygen storage capacity is supported, is provided at the uppermost position of the exhaust passage 11 of the internal combustion engine 2, and an upstream air-fuel ratio sensor 31 is provided on the inlet side thereof. The air-fuel ratio of the internal combustion engine 2 is controlled so that the oxygen storage amount of the three-way catalyst becomes the target oxygen storage amount. In order to counteract the effects of exhaust particulate matter accumulation, the amount of exhaust particulate matter accumulation is estimated, and the target air-fuel ratio is corrected to the lean side according to this amount of accumulation.

The application provides a cordierite honeycomb ceramic carrier and a preparation method and application thereof. The cordierite honeycomb ceramic carrier comprises a honeycomb ceramic body and a plurality of hole blocking parts. The honeycomb ceramic body and the hole blocking parts adopt the same inorganic raw materials and sintering aids. By precisely coordinating the shrinkage behaviors of the cordierite honeycomb ceramic body and the hole blocking material in the sintering process, the interface stress concentration and the decrease of thermal shock resistance caused by the shrinkage mismatch of the two are solved, so that the durability and reliability of the honeycomb ceramic carrier under the high-temperature thermal cycle working condition of a gasoline engine particle trap and the like are significantly improved.

This utility model provides an energy-saving exhaust gas treatment device for oil tankers, including a mixing mechanism, a urea injection mechanism, and a catalytic reaction tank. A bevel gear assembly consisting of gear one and gears two and three meshing on its upper and lower sides is used. Gears two and three have an outer shaft and an inner shaft fixedly connected inside, respectively, achieving coaxial reversal. Spiral blades and impellers are fixedly connected to the outer walls of the inner and outer shafts, respectively, to reverse and cut and mix the flowing gas, improving the degree of urea droplet breakage. This achieves a two-stage mixing process between the exhaust gas and urea droplets, increasing the mixing efficiency between them, reducing the risk of urea crystallization due to insufficient mixing, and improving the efficiency of urea droplets decomposing into ammonia under the high temperature of the exhaust gas. It also achieves a relatively efficient conversion of nitrogen oxides in the exhaust gas into nitrogen under the action of a catalyst.

This utility model discloses a heat insulation device for engine exhaust pipes, comprising: a flexible aluminum foil plate, a waterproof plate fixedly connected to the outer side of the flexible aluminum foil plate, a stainless steel mesh plate fixedly connected to the outer side of the waterproof plate, a plurality of ring-shaped fixing discs fixedly connected to the outer side of the stainless steel mesh plate, a plurality of evenly distributed fixing blocks fixedly connected to the lower end of the stainless steel mesh plate, and elastic tubes fixedly connected to the side walls of the plurality of fixing blocks. This utility model, by incorporating components such as the flexible aluminum foil plate and the anti-wear frame, consists of a multi-layered structure including the flexible aluminum foil plate, the waterproof plate, and the stainless steel mesh plate. The multi-layered structure works together to enhance the overall heat insulation effect. The hooks can be secured inside the fixing disc slots at different positions. This design facilitates the wrapping of exhaust pipes of different diameters, improving the versatility and adaptability of the device, and meeting the usage requirements of various engine models.

The utility model relates to a kind of injection valves, comprising: valve pipe fittings, it forms the valve passage that axially penetrates valve pipe fittings;Valve seat, it forms the valve seat passage that axially penetrates valve seat, valve seat sealingly engages to the one axial end of valve pipe fittings, so that valve seat passage is fluidly communicated with valve passage;Orifice plate, it includes at least one spray hole and the peripheral region around the at least one spray hole;And engagement pipe fittings, it is connected to orifice plate and detachably sealingly engaged to the one axial end of valve pipe fittings, so that the peripheral region of orifice plate contacts valve seat and the at least one spray hole is fluidly communicated with valve seat passage.In the injection valve provided in the utility model, engagement pipe fittings and orifice plate connected to engagement pipe fittings can be replaced with low maintenance cost and high efficiency.

An exhaust flex pipe assembly 100, arranged between an engine 10 and an exhaust aftertreatment system 20, and adapted to harvest electrical energy from the vibrations generated in the vehicle. The exhaust flex pipe assembly 100 comprises a cylindrical body 110 made of adjacent corrugated rings 112, a plurality of triboelectric nanogenerator strips 120 coupled to an outer surface of the cylindrical body 110 and configured to harvest electrical energy from the vibrations generated by the engine 10 and / or a suspension system of the vehicle, and a plurality of ignition switches 130, each coupled to a corresponding triboelectric nanogenerator strip 120 and adapted to harvest the electrical energy from the triboelectric nanogenerator strip 120 and transfer it to a battery 30.The energy recovered by the exhaust flex pipe device 100 eliminates the load on the motor generator for power required for the processes of the electric heating 22 in the exhaust aftertreatment system 20.

A plurality of independent passages (51), a collecting passage (52), a catalyst device (6), and a swirling part (53) are provided to an exhaust passage, the plurality of independent passages (51) individually extending from exhaust port opening ends (12), exhaust gas that passes through the independent passages being collected in the collecting passage (52), the swirling part (53) connecting the collecting passage to the catalyst device (6) to cause the exhaust gas to swirl in the swirling part. The plurality of independent passages and the collecting passage have, as a whole, a shape that is bent in such a way as to bulge toward an exhaust side from the plurality of exhaust port opening ends and to extend downward, and the swirling part has a shape that causes the exhaust gas led out from the collecting passage to swirl about an axis extending along a cylinder arrangement direction.

The invention relates to an assembly for an exhaust hose (2) provided with a flared end (3) around which a hose clamp (4) is mounted, and a protection device (5) for protecting said hose (2). According to the invention, the protection device (5) comprises a housing provided with two parts (15, 16) hinged about a pivotal link (17), which two hinged parts (15, 16) can be swung together by pivoting in order to enclose the hose (2), the flared end (3) and the clamp (4) entirely.

Engine system, with: an engine with a plurality of cylinders (11-14) suitable for generating a driving torque by burning fuel; a first intake manifold (31) which is connected to an intake pipe (20) through which intake air flows into a part of the majority of cylinders; a second intake manifold (32) which supplies the intake air through the first intake manifold (31) to another part of cylinders of the plurality of cylinders (11-14); a first exhaust manifold (41) which is connected to a part of the cylinders which is connected to the first intake manifold; a second exhaust manifold (42) which is connected to another part of the cylinders which is connected to the second intake manifold (32); a return line (60) branched off from the second exhaust manifold (42) to be coupled to the second intake manifold (32); a recirculation inlet valve (61) located at the point where the recirculation line (60) and the second exhaust manifold (42) are connected; and a manifold connecting valve (63) which is arranged on an inlet line (20) between the first inlet manifold (31) and the second inlet manifold (32), wherein, when some cylinders are deactivated, the recirculation inlet valve (61) is open to supply exhaust gas from the second exhaust manifold (42) to the second inlet manifold (32), and the manifold connecting valve (63) is cut off in order to prevent intake air from being supplied through the first intake manifold (31) to the second intake manifold (32), and the entire exhaust gas flow rate from the deactivated cylinders flows back into the deactivated cylinders.

A kind of ternary encapsulation assembly anticorrosion structure belongs to the technical field of automobile exhaust system. Intake flange is connected with intake upper shell, intake upper shell and lower shell form cavity, TWC carrier is fixed in it by gasket one, intake lower shell is connected with catalytic converter shell through front end taper, GPF carrier in it is fixed by gasket two, catalytic converter shell is connected with exhaust pipe through rear end taper, exhaust pipe is connected with rear flange assembly, oxygen sensor nut and differential pressure tube nut seat are fixed on corresponding shell outer wall respectively, differential pressure tube assembly is installed correspondingly, EGR pipe is connected with catalytic converter shell, heat shield is welded on catalytic converter shell outside, bracket is fixed by bolt, relevant bracket, heat insulation cotton and the like are fixed correspondingly. The utility model improves anticorrosion performance, prolongs service life while guaranteeing the stability of exhaust purification function and the environmental adaptability of structure by the synergy of material selection, process optimization and structure design.

The invention relates to a diagnostic process (D) for checking whether an exhaust aftertreatment element is correctly seated in its emission element installation location and correctly integrated into an exhaust system. An exhaust gas mass value (MA) characterizing the exhaust gas mass emitted from the internal combustion engine between a start time and a diagnostic time is determined. At the start time, an exhaust gas temperature prevailing downstream of the emission element installation location is detected by means of an exhaust gas temperature sensor, and a corresponding start exhaust gas temperature value (T1) is provided. Furthermore, an exhaust gas temperature prevailing at the temperature measuring point after the start time is detected by means of the same exhaust gas temperature sensor, and a corresponding exhaust gas temperature value (T2) is provided. An exhaust gas temperature difference value (T21) is calculated from T2 and T1.At the diagnostic point, which occurs as soon as the exhaust gas temperature difference value (T21) is equal to or greater than a specified limit exhaust gas temperature difference value (GT), the following is determined: - that the exhaust mass value (MA) is equal to or greater than a specified limit exhaust mass value (GM), whereupon an initial diagnostic signal (DS1) is provided, which characterizes a correct integration state of the emission element, or - that the exhaust mass value (MA) is smaller than the specified limit exhaust mass value (GM), whereupon a second diagnostic signal (DS2) is provided, which characterizes an incorrect integration state of the emission element.

A device for the electrical contacting of a heating conductor in an exhaust gas line. The heating conductor is arranged within a metal housing and at least one electrical conductor is fed through this housing in order to contact the heating conductor inside, with an insulator, which is designed as a sleeve. The sleeve has a central bore, through which the electrical conductor is fed. The insulator has on its radially outwardly directed surface a first metallized zone, to which a first metal sleeve is durably connected, and the insulator also has on its radially outwardly directed surface a second metallized zone, to which a second metal sleeve is durably connected.

Selective catalytic reduction system (100), comprising: a dispenser mounting system with: a mounting plate (120) with an opening (123) in a surface (127) of the mounting plate (120), a plurality of mounting brackets (121) coupled to the mounting plate (120), wherein the plurality of mounting brackets (121) are positioned around a peripheral part of the opening (123), at least a part of each of the plurality of mounting brackets (121) is spaced away from the mounting plate (120), and each of the plurality of mounting brackets (121) includes an opening (128) in the part that is spaced away from the mounting plate (120), and a plurality of fasteners (122), each having a fastening head (136) and a fastening shaft (137) positioned in the openings (128) of the plurality of fastening brackets (121), such that each fastening head (136) is arranged between the surface (127) of the mounting plate (120) and the part of the respective fastening bracket (121) that is spaced from the mounting plate (120), and each fastening shaft (137) extends from a respective opening (128) in a direction with an orthogonal component with respect to the surface (127) of the mounting plate (120); and a dispenser (110) coupled to the dispenser mounting system via the plurality of fixings (122), wherein the fixing shafts (137) extend through openings in legs (111) of the dispenser (110), wherein an injector opening of the dispenser is aligned with the opening (123) in the mounting plate (120).

A remote vehicle key location of a remote vehicle key is received from a key detection system at a vehicle. A vehicle location of the vehicle is received from a sensor system of the vehicle. A determination is made regarding whether the remote vehicle key location is within a pre-defined distance of the vehicle location. Based on a determination that the first remote vehicle key location is within the pre-defined distance of the vehicle, a first command is issued to a catalyst heating system to heat a catalyst of the vehicle at a first catalyst heating level prior to start-up of an engine of the vehicle and a second command is issued to the catalyst heating system to heat the catalyst of the vehicle at a second catalyst heating level following start-up of the engine. The first catalyst heating level is different from the second catalyst heating level.

[Problem] To provide a catalytic converter that can stably improve the purification rate of a three-way catalyst. [Solution] Provided is a catalytic converter 2 comprising: a three-way catalyst 5 that purifies exhaust gas from an engine; a baffle plate 6 that has a plurality of holes through which the exhaust gas passes; and a case 3 that accommodates the three-way catalyst 5 and the baffle plate 6. The case 3 includes: an inflow section 31 into which flows the exhaust gas discharged from the engine; an expansion section 32 where the cross-sectional area of the flow passage for the exhaust gas flowing in from the inflow section 31 is expanded; an accommodation section 33 that accommodates the three-way catalyst 5; a reduction section 34 where the cross-sectional area of the flow passage for the exhaust gas that has passed through the three-way catalyst 5 is reduced; and an outflow section 35 out from which flows the exhaust gas that has passed through the reduction section 34. The outflow section 35 has an attachment part 351 to which is attached an oxygen sensor 4 for detecting the concentration of oxygen contained in the exhaust gas that flows through the outflow section 35. The baffle plate 6 is provided in the interior of the case 3 and between the three-way catalyst 5 and the attachment part 351.

To provide a combine that allows a space of its machine body to be used effectively, allows an exhaust gas purification device to be installed compactly, and allows excellent weight balance to be achieved.SOLUTION: A combine in which an engine 11 is arranged in the front part of a travelling machine body includes an exhaust gas purification device 30 having a DPF case 31 for removing particulate substances in exhaust gas of the engine 11, and an SCR case 32 for removing nitrogen oxide substances in the exhaust gas of the engine 11. The DPF case 31 and the SCR case 32 are arranged above the engine 11 in the state of vertically arranged in the direction with the longitudinal direction as the back and forth direction.SELECTED DRAWING: Figure 9

Supply module (10) for conveying an operating / auxiliary material from a storage tank (36) of an exhaust aftertreatment system with a carrier body (18) on which a conveying unit (16) and a filter (12) are mounted, characterized in that a heating element (50) has at least one electrical conductor (62) with cross-sectional areas (64, 66) that differ depending on the installation position.

The application provides a hydrogen-ammonia engine combustion and NO x The application relates to a control technology field of a combustion engine, and discloses a synergic control system and a control method, which comprise a controller and a fuel distribution subsystem, an ignition subsystem and an aftertreatment subsystem connected with the controller, wherein the ignition subsystem at least comprises a jet ignition device; the fuel distribution subsystem at least comprises an ammonia fuel storage device, a catalytic decomposer and a hydrogen purification device, the hydrogen purification device is connected with a first supply subsystem and a second supply subsystem, the first supply subsystem is connected with the jet ignition device, the second supply subsystem is connected with the aftertreatment subsystem; and the aftertreatment subsystem at least comprises a primary SCR device and a secondary SCR device connected with the primary SCR device. The application solves the problems that the proportion of hydrogen-ammonia mixed fuel and the combustion process cannot be effectively controlled in the prior art, the engine combustion efficiency is low, and nitrogen oxide emission does not meet the standard.

The application discloses a hydrogen internal combustion engine with air inlet channel anti-backfire function and relates to the technical field of hydrogen internal combustion engines.The hydrogen internal combustion engine comprises a body, an air inlet mechanism, a hydrogen injector, a tail gas recycling mechanism and an exhaust mechanism, one side of the body is provided with the air inlet mechanism, the other side of the body is provided with the exhaust mechanism, the body is in pipeline communication with the air inlet mechanism and the exhaust mechanism respectively, the hydrogen injector is inserted into the air inlet mechanism, the air inlet mechanism and the tail gas recycling mechanism are fastened and connected, the tail gas recycling mechanism and the exhaust mechanism are fastened and connected, and the tail gas recycling mechanism and the exhaust mechanism are in pipeline communication.In the application, the mixed gas in the pipeline inside the cooling chamber is cooled by the cooling assembly, so that the mixed gas cannot reach the combustion condition of hydrogen and cannot be combusted in the air inlet manifold, thereby preventing backfire of the air inlet pipe, and the high-temperature tail gas is used for preheating the air just entering, so that the air and the hydrogen are rapidly mixed and the mixing is more uniform.

Ceramic honeycomb bodies and methods for their manufacture are provided. The ceramic honeycomb body comprises a bulk density of less than 210 g / L, a geometric surface area (GSA) greater than 93 in−1 (3.66 mm−1), a mechanical integrity factor (MIF) greater than 0.28%, and a back pressure factor (BPF) greater than 0.4 mm2.

A two-stroke internal combustion engine comprising a crankcase (2) which has a combustion chamber (3) having one or more intake ports (4) for a mixture of fuel and oxidizer and one or more exhaust ports (5) for the burnt products; an exhaust system (6) for the burnt products, in fluid communication with the exhaust port (5) of the combustion chamber (3), comprising at least one catalyst (7); the exhaust system (6) comprising a first conduit (8), along which the catalyst (7) is disposed, and a second conduit (9) having respectively an inlet (8a; 9a) and an outlet (8b; 9b), without a catalyst (7); the second conduit (9) opens into the first conduit (8) at least upstream of the catalyst (7) which is located therein;an interceptor device (10) for the burnt products exiting the exhaust port (5) of the combustion chamber (3) is configured to convey the burnt products into the first conduit (8) or into the second conduit (9). [FIG. 1];

A multiply redundant safety system that protects humans and assets while transfer(s) / fuelling of on road / off road, rail, marine, aircraft, spacecraft, rockets, and all other vehicles / vessels utilizing Compressed and or Liquefied Gas Fuels / compound(s). Utilizing Natural Gas Chemical Family of Hydrogen / Propane / ethane / ammonia / and any mixtures along with or with out oxidizer(s), such as Liquefied Oxygen, Oxygen Triplet (O3) / ozone / hydrogen peroxide / peroxide / solid oxidizer(s) one or more processors, utilizing Artificial Intelligence techniques / machine learning in combination with one or more sensors; in combination with one or more micro switches / actuator(s) combine to detect any leaks / fire(s) / or explosion hazards / vehicle motion / arc's, spark(s) / and other hazards for quickly mitigating / locking out / stopping fueling / gas / transfers / vehicle releasing system(s).