2852results about "Exhaust apparatus" patented technology

A dozer including a cabin, the dozer includes: an engine room located in front of the cabin, where an engine is disposed; an exhaust gas after-treatment device for purifying exhaust gases emitted from the engine; a first cooling device located in front of the cabin and capable of cooling the exhaust gas after-treatment device; and a second cooling device spaced apart from the first cooling device, with the cabin midway therebetween, and capable of cooling the engine.

There is described a method and system for carbon dioxide capture using temperature-swing adsorption. First and second, respectively third and fourth temperature-swing adsorber units (TSAD1, TSAD2, TSAC1, TSAC2) are provided that are operable in alternate adsorption and desorption cycles to capture and remove water and carbon dioxide, respectively, from the exhaust gas, each of the temperature-swing adsorber units (TSAD1, TSAD2, TSAC1, TSAC2) including a sorbent bed (AD) and a heat exchanger structure (HEX) thermally coupled to the sorbent bed (AD). Hot exhaust gas coming from the internal combustion engine (ICE) is routed through the heat exchanger structure (HEX) of that one (TSAD1; TSAD2) of the first and second temperature-swing adsorber units (TSAD1, TSAD2) that undergoes a desorption cycle, to sustain desorption of water adsorbed by the sorbent bed (AD) thereof, as well as through the heat exchanger structure (HEX) of that one (TSAC1; TSAC2) of the third and fourth temperature-swing adsorber units (TSAC1, TSAC2) that undergoes a desorption cycle, to sustain desorption of carbon dioxide adsorbed by the sorbent bed (AD) thereof. The exhaust gas is furthermore cooled to produce cold exhaust gas, which is routed through the sorbent bed (AD) of that one (TSAD2; TSAD1) of the first and second temperature-swing adsorber units (TSAD1, TSAD2) that undergoes an adsorption cycle, to cause adsorption of water by the sorbent bed (AD), and then through the sorbent bed (AD) of that one (TSAC2; TSAC1) of the third and fourth temperature-swing adsorber units (TSAC1, TSAC2) that undergoes an adsorption cycle, to cause adsorption of carbon dioxide by the sorbent bed (AD). Operation of the first to fourth temperature-swing adsorber units (TSAD1, TSAD2, TSAC1, TSAC2) is then switched from the desorption cycle to the adsorption cycle, and vice versa, and the process is cyclically repeated.

There is described a method and system for carbon dioxide capture using temperature-swing adsorption. First and second, respectively third and fourth temperature-swing adsorber units (TSAD1, TSAD2, TSAC1, TSAC2) are provided that are operable in alternate adsorption and desorption cycles to capture and remove water and carbon dioxide, respectively, from the exhaust gas, each of the temperature-swing adsorber units (TSAD1, TSAD2, TSAC1, TSAC2) including a sorbent bed (AD) and a heat exchanger structure (HEX) thermally coupled to the sorbent bed (AD). Hot exhaust gas coming from the internal combustion engine (ICE) is routed through the heat exchanger structure (HEX) of that one (TSAD1; TSAD2) of the first and second temperature-swing adsorber units (TSAD1, TSAD2) that undergoes a desorption cycle, to sustain desorption of water adsorbed by the sorbent bed (AD) thereof, as well as through the heat exchanger structure (HEX) of that one (TSAC1; TSAC2) of the third and fourth temperature-swing adsorber units (TSAC1, TSAC2) that undergoes a desorption cycle, to sustain desorption of carbon dioxide adsorbed by the sorbent bed (AD) thereof. The exhaust gas is furthermore cooled to produce cold exhaust gas, at least part of which is routed through the sorbent bed (AD) of that one (TSAD2; TSAD1) of the first and second temperature-swing adsorber units (TSAD1, TSAD2) that undergoes an adsorption cycle, to cause adsorption of water by the sorbent bed (AD), and then through the sorbent bed (AD) of that one (TSAC2; TSAC1) of the third and fourth temperature-swing adsorber units (TSAC1, TSAC2) that undergoes an adsorption cycle, to cause adsorption of carbon dioxide by the sorbent bed (AD). Operation of the first to fourth temperature-swing adsorber units (TSAD1, TSAD2, TSAC1, TSAC2) is then switched from the desorption cycle to the adsorption cycle, and vice versa, and the process is cyclically repeated.

The invention discloses an integrated hydrogen-ammonia engine tail gas nitrogen pollutant thermocatalytic conversion device, and relates to the technical field of hydrogen-ammonia engine tail gas treatment, the integrated hydrogen-ammonia engine tail gas nitrogen pollutant thermocatalytic conversion device comprises a shell and an electric control unit; the shell comprises a component detection device, an electric heating type mixing plate, a urea solution spraying device, a temperature monitoring device, a purification device and an electric control unit; the purification device comprises a two-section type structure, namely a first-section SCR reaction area and a second-section ASC-NDC integration area; the electric control unit is electrically connected with each electric component; according to the invention, sequencing optimization and integrated design of hydrogen-ammonia engine parts are realized, and the requirements of triple-effect collaborative purification of nitrogen pollutants, high efficiency, energy conservation and stable operation under all working conditions are met.

The invention discloses a preparation method of high-performance cordierite DPF honeycomb ceramic, and belongs to the technical field of honeycomb ceramic carrier preparation. The preparation method comprises the following steps: mixing raw materials; kneading mud; performing extrusion molding; drying and shaping; cutting and firing to obtain a cordierite honeycomb ceramic carrier; and performing boundary dimension processing, film covering, hole dotting, mud scraping and drying to obtain a finished product. According to the invention, aluminum hydroxide is adopted to replace or partially replace aluminum oxide in the formula of the cordierite porous ceramic structure while magnesium hydroxide is used, and the two substances can form a synergistic heat absorption mechanism by virtue of the difference of the aluminum hydroxide and magnesium hydroxide in thermal decomposition temperature, so that the heat absorption efficiency of the cordierite porous ceramic structure is greatly improved in the low-temperature coke discharge stage of a carrier mud blank. Aluminum hydroxide is subjected to a decomposition reaction before magnesium hydroxide, and then magnesium hydroxide is continuously decomposed at a higher temperature, so that the temperature range covered by the whole heat absorption process is greatly widened, the heating rate of the carrier mud blank is effectively slowed down, and thermal shock caused by sudden rising of local temperature is avoided.

The invention relates to a DDPF regeneration control method, system and program product based on a differential pressure transducer, when a vehicle is in a parking regeneration control state, an engine is controlled to increase the idle speed, and when the upstream temperature of the DDPF exceeds an ignition temperature limit value, the vehicle enters the parking regeneration state; during regeneration, the amount of fuel injected into the engine is determined according to the DDPF upstream temperature, the set temperature target value and the waste gas amount, and engine rear injection is controlled for DDPF regeneration; according to the method, the pressure difference between an inlet and an outlet of the DDPF is obtained, the peak pressure difference P of the DDPF is determined when the regeneration state continues till the pressure difference begins to drop, and the fuel injection quantity is corrected or a prompt signal is sent out according to the size relation between the P and a set limiting value. A temperature sensor at the rear end of the DDPF is omitted, the characteristic that the pressure difference is increased and then reduced due to oxidation heat release of carbon particles and hydrocarbon during regeneration is utilized, regeneration control is achieved based on a pressure difference sensor, and the risk of local overheating damage is dealt with by comparing a pressure difference peak value with a set limiting value.

An exhaust control system for a vehicle includes a temperature sensor located downstream of the exhaust combustor and upstream of the SCR catalytic converter in the exhaust system. The temperature sensor is configured to generate a measurement signal indicating the temperature of the exhaust gas flowing through the exhaust system at the outlet of a DPF located downstream of the exhaust combustor. An exhaust control module is configured to: activate the exhaust combustor to heat the exhaust gas; monitor the temperature of the exhaust gas based on the measurement signal; subsequently activate the exhaust combustor and then deactivate it based on an upper threshold temperature of the exhaust gas; and subsequently deactivate the exhaust combustor and then activate it based on a lower threshold temperature of the exhaust gas. The lower threshold temperature is lower than the upper threshold temperature.

A transportation vehicle capable of realizing a cleaning function of an exhaust gas purifying device while suppressing increase in the weight and costs. The transportation vehicle comprises: a diesel engine; a generator; a traveling motor; a grid box that converts the electric power generated by at least one of the generator or the traveling motor into heat to consume the electric power; an exhaust gas purifying device, and a controller configured to, in a case of causing the generator to generate load necessary to increase a temperature of the exhaust gas to a cleaning temperature, if determining that additional electric power additionally generated by the generator can be consumed by the grid box, cause the generator to additionally generate the additional electric power to remove the harmful substances deposited on the exhaust gas purifying device, and causes the grid box to additionally consume the additional electric power.

The present application relates to a reductant delivery system for exhaust gas aftertreatment systems. A reductant delivery system includes an inlet body, an outlet body, and an outer transfer tube. The inlet body includes an inlet body coupler, an inlet body outer transfer shell, and an inlet body inner shell. The inlet body coupler surrounds an inlet body inlet configured to receive exhaust gas. The inlet body outer transfer shell is coupled to the inlet body coupler. The inlet body outer transfer shell includes an inlet body outer transfer shell inner surface and an inlet body outer transfer shell outlet. The inlet body outer transfer shell outlet extends through the inlet body outer transfer shell inner surface. The inlet body inner shell includes an inlet body inner shell first flange, an inlet body inner shell second flange, and an inlet body inner shell wall. The inlet body inner shell first flange is coupled to the inlet body outer transfer shell inner surface.

The invention relates to the technical field of generator silencers, in particular to a mute variable-frequency gasoline engine generator silencer and a production process. Comprising an air inlet assembly, an installation assembly, a front end cover net plate, front end cover cotton, a silencer upper cover, an upper cover net plate, upper cover cotton, a silencer lower cover, a lower cover net plate, lower cover cotton, a front partition plate, a rear partition plate, a front silencing pipe, a plurality of plugs, a rear silencing pipe, a silencer rear end cover, a rear end cover net plate, rear end cover cotton, a silencing bag, silencing bag cotton, a silencing bag net plate and an air outlet pipe. The upper cover cotton is arranged between the silencer upper cover and the upper cover net plate, the lower cover cotton is arranged between the silencer lower cover and the lower cover net plate, the silencer upper cover is fixedly connected with the silencer lower cover, and the front partition plate and the rear partition plate are both connected with the upper cover net plate and the lower cover net plate. In this way, the technical problems that in the prior art, due to the fact that silencing cotton in a silencer is manually added into an interlayer, the number of the added silencing cotton cannot be guaranteed, and the uniformity is poor are solved.

To provide a support structure capable of easily mounting a support member and suppressing falling of an exhaust system component.SOLUTION: An elastic member included in a support structure provided in a vehicle includes a first surface, a second surface, a hole portion, and a slit. The first surface and the second surface are located at both ends in a direction along the axis. The hole portion penetrates the elastic member from the first surface to the second surface. The slit is provided from the first surface to the second surface along a central axis of the hole portion, and has a first end connected to a space outside the hole portion and a second end connected to the hole portion. The elastic member is configured to support the exhaust system component via a rod-shaped support member that can be inserted into the hole. The slit is configured to be openable so that the support member can pass through the slit. Further, the slit is provided in a region to which a load due to gravity is less likely to be applied from the support member in a state of being inserted into the hole portion, among regions around the hole portion of the elastic member when mounted on the vehicle.SELECTED DRAWING: Figure 2

The invention relates to metallurgy, and more particularly to a sheet material made of titanium alloys that are resistant to high heat and oxidation and exhibit structural stability under prolonged operational exposure to temperatures in a range of up to 800° C. and can be used for manufacturing components of a vehicle exhaust system. The present titanium alloy sheet material for the manufacture of components contains: 1.5-3.0 wt % aluminium, 0.1-0.5 wt % molybdenum, 0.1-0.6 wt % silicon, not more than 0.2 wt % iron, not more than 0.15 wt % oxygen, not more than 0.1 wt % carbon, not more than 0.03 wt % nitrogen, not more than 0.015 wt % hydrogen, and the balance titanium. The sheet material has high creep resistance and oxidation resistance values, as well as a stable structure under prolonged operational exposure to temperatures in a range of up to 800° C. The material is suitable for cold forming.

To provide a control device for a hybrid vehicle that ensures good drivability while suppressing NOx emissions to the outside of the vehicle, even when a malfunction occurs in the LNT system. [Solution] A control device for a hybrid vehicle having an engine and an electric motor as power sources, enabling series hybrid driving and direct engine driving, and having a NOx purification system using an SCR catalyst and an LNT catalyst in the exhaust passage of the engine, comprising: an abnormality detection unit that detects abnormalities related to the NOx purification system using the LNT catalyst; and a driving state control unit that, when the abnormality is detected, prohibits direct engine driving as the driving mode of the vehicle and restricts it to series hybrid driving, and causes the engine to operate in a steady state so that the output from the engine is above a predetermined value within an output range that does not exceed the amount of NOx that can be purified by the NOx purification system using the SCR catalyst.

There is disclosed a method of operating an exhaust system for receiving exhaust gas from an internal combustion engine. The exhaust system comprises: a turbine, a dosing module, at least one of a variable geometry mechanism and a bypass control valve, and a controller. The turbine is configured to receive exhaust gas from the internal combustion engine. The turbine comprises a turbine wheel configured to extract energy from the exhaust gas. The dosing module is configured to deliver an aftertreatment fluid to the exhaust gas at a position downstream of the turbine wheel. The variable geometry mechanism is configured to control the flow of exhaust gas delivered to the turbine wheel. The bypass control valve is configured to bypass a portion of the exhaust gas from a position upstream of the turbine wheel to a position downstream of the turbine wheel. The controller is configured to execute the method, the method comprising: determining a current property of the exhaust gas at a position downstream of the turbine wheel; determining a difference between the current property of the exhaust gas at the position downstream of the turbine wheel and a reference property of the exhaust gas at the position downstream of the turbine wheel; and in response to the difference, adjusting the at least one of the variable geometry mechanism and the bypass control valve.

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 invention discloses a system for preheating a cold-state cylinder body through waste gas and a preheating method. The system comprises a preheating pipeline unit, a waste gas turbocharging unit, a temperature monitoring unit, an exhaust valve assembly and a control unit. The preheating pipeline unit comprises an annular preheating main pipeline and a converging pipeline, and a plurality of preheating sub-pipelines are distributed on the periphery of an engine cylinder body; the exhaust gas turbocharging unit comprises a turbine and a gas compressor; the control unit is used for controlling opening and closing of the exhaust valve assembly according to the numerical value of the temperature monitoring unit, so that a main pipeline is preheated through waste gas when an engine is cooled and started, and three-dimensional preheating is conducted on a cylinder body after it is judged that the preheating main pipeline reaches the uniform thermal field according to a first threshold value. And starting the exhaust gas turbocharging unit according to the second threshold value, and enabling all exhaust gas to flow through the exhaust gas turbocharging unit to execute a turbocharging function until a third threshold value is reached. Firstly, a uniform thermal field is established on a preheating main pipeline to heat a cylinder cover, and then the cylinder body is preheated in the circumferential direction of the cylinder body.

An aftertreatment system includes a housing and a tube assembly. The housing has an outer surface and an inner surface, the inner surface defining a passage configured to receive a flow of exhaust gas, the housing including an aperture. The tube assembly includes a fitting assembly. The fitting assembly includes a fitting body including a fitting body aperture, an upward-facing surface, and a downward-facing surface, the fitting body extending through the aperture and coupled to the outer surface, a fitting tube extending from the downward-facing surface and disposed in the passage, the fitting tube including a first linear portion attached to the fitting body, and a bent portion extending from the first linear portion, and a conveying tube positioned partially within the fitting body aperture and extending outward from the fitting body.

The invention relates to the technical field of tail gas treatment, in particular to a tail gas treatment structure of a movable diesel generating set. Comprising a supporting seat and further comprises a cyclone separator, a first barrel, a flow guide part, a second barrel, a third barrel, a vibration part, a driving part and the like. Through cooperative cooperation of the cyclone separator, the impingement plate, the flow guide part, the vibration part and the driving part, in the tail gas treatment process, the cyclone separator separates and collects large particles, the impingement plate enables airflow to uniformly enter DOC for oxidation, the flow guide part sweeps high-temperature gas to the end face of the DPF to form uniform heating, and the tail gas treatment effect is improved. The vibration part transmits vibration to the DPF through the vibration transmission rod so that a soot layer can be loosened, and the driving part drives the flow guide part to rotate and the vibration part to work at the same time. Therefore, the problems that in the prior art, an ash-carbon composite layer formed by ash accumulation hinders regeneration heat transfer, and a soot layer is compacted compactly under the low-load working condition, so that regeneration starting is difficult, and heat spreading is slow are systematically solved.

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.

Method for heating an exhaust gas sensor (26) in the exhaust system (20) of an internal combustion engine (10), wherein an electrically heated catalyst (24) is arranged in the exhaust system (20) and an exhaust gas sensor (26) is arranged upstream of the electrically heated catalyst (24) and is spaced apart from the electrically heated catalyst (24), wherein the electrically heated catalyst is heated by an electric heating element and the waste heat of the electrically heated catalyst (24) is used to heat the exhaust gas sensor (26) to its release temperature (T) by means of heat conduction via a thermal bridge (28) made of copper or a copper alloy. F ) to heat up.

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.

A control signal is issued to a turbo shaft actuator to rotate a turbine at a first turbine speed in response to an ignition turn on signal. The first turbine speed is different from a default turbine speed. The rotation of the turbine at the default turbine speed results in exhaust gas having a first exhaust gas temperature after the exhaust gas passes through the turbine to a catalyst brick of the vehicle. The rotation of the turbine at the first turbine speed results in the exhaust gas having a second exhaust gas temperature after the exhaust gas passes through the turbine to the catalyst brick. The second exhaust gas temperature is higher than the first exhaust gas temperature. When the catalyst temperature is greater than a catalyst light-off temperature a control signal is issued to the turbo shaft actuator to rotate the turbine at the default speed.

Systems are provided including a selective catalytic reduction catalyst structured to receive first exhaust gas from a first fuel source of a dual fuel engine system and second exhaust gas from a second fuel source of the dual fuel engine system, a first fuel of the first fuel source differing from a second fuel of the second fuel source, an ammonia slip catalyst positioned downstream of the selective catalytic reduction catalyst to receive a flow of exhaust gases from the selective catalytic reduction catalyst without an intervening catalyst, and an oxidation catalyst positioned downstream of the ammonia slip catalyst to receive the flow of exhaust gases from the ammonia slip catalyst without an intervening catalyst.

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.

The invention discloses an exhaust pipe assembly and a machining process thereof, and relates to the technical field of exhaust pipe assembly machining, and the machining process specifically comprises the following steps that S1, a rear exhaust pipe, a front exhaust pipe and a mounting support are welded into an exhaust pipe assembly body; s2, the surface of the exhaust pipe assembly body is ground and polished; through the designed spraying conductive mechanism, during spraying operation, a conductive brush is attached to the exhaust pipe assembly body in real time, static electricity generated dynamically is directly conducted to the ground through a conductive wire, and excessive adsorption of coating of the exhaust pipe assembly body caused by local charge enrichment is avoided fundamentally; the problem of powder accumulation which is difficult to solve in a traditional conductive clamp fixed grounding scheme is solved, it is ensured that the thickness of a coating is uniform and consistent, meanwhile, the conductive brush integrates the conductive function and the cleaning function, chippings left in previous grinding are synchronously scraped, the use performance of the exhaust pipe total body is comprehensively optimized, and the service life of the exhaust pipe total body is comprehensively prolonged.

The utility model provides a non-road post-processing heat insulation structure which is characterized in that heat insulation cotton is wrapped outside an interface flange on a post-processing body, two side edge areas of the heat insulation cotton are in lap joint, two ends of a tension spring are respectively fixed on the two side edge areas, and the tension spring is tensioned to tension the outer-layer heat insulation cotton; the rear end of the heat insulation cotton is provided with a skirt edge protruding towards the side, and the skirt edge is fixed to the post-processing body in an attached mode. The post-treatment air inlet flange and the post-treatment air outlet flange are subjected to tight heat insulation protection.

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.

In a rotary disc type reactor for absorbing exhaust gases from ships, the absorption efficiency due to mass transfer of the absorbent liquid and the reaction efficiency of the reactor are improved. [Solution] A power unit 3 rotates a hollow rotating shaft 2, a rotating disc 4 fitted onto the hollow rotating shaft 2, a group of injection holes opened in the hollow rotating shaft 2, the group of injection holes including a plurality of injection holes, the opening direction of the injection holes is set toward the rotating disc 4, a baffle component is further fitted onto the hollow rotating shaft 2, the baffle component includes a first baffle and a second baffle, the first baffle and the second baffle are located on both sides of the rotating disc 4, a first reflection passage is formed between the first baffle and the rotating disc 4, and a second reflection passage is formed between the second baffle and the rotating disc 4. By providing the first baffle and the second baffle on both sides of the rotating disc 4, the first baffle and the second baffle block the absorbent liquid ejected from the injection holes to prevent the scattering of the absorbent liquid, and most of the ejected absorbent liquid is scattered on the surface of the rotating disc 4.

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.