8421results about "Silencing apparatus" patented technology

The invention discloses a biogas internal combustion engine exhaust gas waste heat cascade reutilization heat energy recovery device which comprises an exhaust gas conveying pipeline, a heat exchange cavity is formed in the exhaust gas conveying pipeline, a plurality of tower-shaped spiral heat exchange pipelines are arranged in the heat exchange cavity, the multiple heat exchange pipelines are vertically and sequentially distributed, the heat exchange pipelines are corrugated pipelines, and the heat exchange pipelines are communicated with the heat exchange cavity. A power rod is arranged in the middle of the heat exchange pipeline; the vibration motor and the power rod are arranged in the waste gas conveying pipeline, so that the power rod can guide and transmit the driving force of the vibration motor to the tower-shaped spiral heat exchange pipeline capable of extending and contracting through the hard connecting structure or the soft connecting structure, and the heat exchange pipeline can shake up and down in the heat exchange operation period; and therefore, water flowing in the pipeline can be driven to roll up and down, the water flowing in the pipeline can be more sufficiently and uniformly attached to the inner wall of the heat exchange pipeline, the heating area of the pipeline is more uniform, and the overall heat exchange effect is effectively improved.

A marine urea aqueous solution preparation device, and a preparation method therefor. The marine urea aqueous solution preparation device comprises a water bath barrel (1), a preparation barrel (2) fixed to an inner wall of the bottom of the water bath barrel (1) by means of a support leg, and a gap between the water bath barrel (1) and the preparation barrel (2) is used to contain fresh water to heat the preparation barrel (2). A top cover (6) is fixed to the top of the preparation barrel (2) by means of multiple bolts, and multiple heaters (11) are fixed to an inner wall of the water bath barrel (1). The urea aqueous solution is stirred by means of a stirring rod (3), which can sequentially drive a swinging structure and an intermittent structure, so that urea particles are intermittently sprinkled into the preparation barrel (2) in small batches.

An electric motor having a stator and a rotor in which the electric motor is an axial flux motor. The stator has a multiplicity of cores which, along a circumferential direction, are disposed beside on another on a common first diameter and are in each case surrounded by one coil. The rotor has a multiplicity of magnets which, along the circumferential direction, are disposed beside one another on a common second diameter on a support. Each magnet in the circumferential direction extends across a first angular range and the magnets are disposed so as to be mutually spaced apart by a second angular range formed by the support, which support is also heatable by the stator by induction. The second angular range is at least 30% of the first angular range.

The utility model discloses a novel anti-crystallization nozzle structure, which relates to the technical field of urea nozzles and comprises an exhaust pipe, a nozzle body is fixedly mounted in the middle of the top of the exhaust pipe, a heat preservation mechanism is fixedly mounted at the top of the exhaust pipe, and a heat conduction mechanism is fixedly connected to the outer surface of the exhaust pipe. By the adoption of the structure, the heat preservation mechanism and the heat conduction mechanism cooperatively operate, when a vehicle runs, the heat absorption coil pipe is sleeved outside the high-temperature exhaust pipe, heat of the exhaust pipe is efficiently conducted to the heat conduction medium in the coil pipe, the heated medium naturally ascends and flows into the heat preservation tank based on the heat rising and cold falling characteristics, and automatic temperature rising during running is achieved; the micro pump is started to pump the heated heat-conducting medium in the heat-insulating tank to the heat-conducting coil pipe, the heat-conducting coil pipe transfers heat to the heat-conducting sleeve to preserve heat of the nozzle body, crystallization in the nozzle caused by sudden drop of external temperature is effectively avoided, normal use and stable performance of the nozzle are greatly guaranteed, and reliable operation of the whole system is guaranteed.

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.

The invention relates to the technical field of hydrogen internal combustion engines, in particular to a water-hydrogen combined supply internal combustion engine which comprises a first power generation unit driven by hydrogen and air combusted by a hydrogen internal combustion engine unit. The gas recovery unit converts water vapor in exhausted gas into liquid water through a condensation driving module and drives the second power generation unit at the same time; the fuel supply unit adjusts the hydrogen injection amount through a generated adjusting instruction based on multi-dimensional data detected by the monitoring unit and processed by the data processing unit and the confidence decision-making unit, and then generation of nitric oxide is inhibited. Condensate water recovery and combustion control of the hydrogen internal combustion engine are deeply combined, the actual exhaust humidity is reversely deduced by monitoring the flow of the condensate water, the gas detection error tolerance range is dynamically corrected, the hydrogen-oxygen combustion ratio judgment result is linked, safety amplitude limiting control over hydrogen fuel supply is achieved, and nitrogen oxide generation of the hydrogen internal combustion engine is reduced.

The invention provides a control method and device of a mixed gas power generation system, equipment and a storage medium, and belongs to the technical field of new energy power generation. The method comprises the following steps: calculating the introduction rate of each target gas based on load operation data, the type of gas introduced into the gas generator set at present, the type of target gas introduced into the gas generator set after a first duration in a combustion stage and the proportion of the target gas, based on the introduction rate and the total heat per unit time of the exhaust gas output by the gas generator set after the second duration, the exhaust gas proportion used for heating each target gas is calculated, each target gas is heated based on the exhaust gas proportion, and the temperature value of the gas in the gas generator set is monitored in real time; and regulating and controlling the operation state of the mixed gas power generation system based on the temperature value. The proportion of gas input into the gas generator can be flexibly adjusted, and the energy utilization rate of the system is increased.

A mixing section for an exhaust system of an internal combustion engine comprises a mixing section housing (16) through which exhaust gas (A) flows in a main exhaust gas flow direction (H), and a tubular mixing body (18) arranged in the mixing section housing (16) and extending in the direction of a longitudinal axis (L) of the mixing body, wherein the mixing body (18) defines a first flow volume (24) through which exhaust gas (A) flows radially outwards and defines a second flow volume (26) through which exhaust gas (A) flows radially inwards, wherein the mixing body (18) has a tubular first mixing body part (20) extending in the direction of the longitudinal axis (L) of the mixing body and at least one extension in the direction of the longitudinal axis of the mixing body on an outer surface (32) of the first mixing body part (20) facing the second flow volume (26) or on an inner surface (30) of the first mixing body part (20) facing the first flow volume (24). (L) extending,a tubular second mixing body part (34), wherein the second mixing body part (34) has a plurality of first projections (36) arranged adjacent to one another in the direction of the longitudinal axis (L) of the mixing body and in the circumferential direction around the longitudinal axis (L) of the mixing body and directed towards the first mixing body part (20), and wherein the second mixing body part (34) bears against the first mixing body part (20) in the region of at least a part of the first projections (36), preferably all of the first projections (36).

A system includes: a hydrogen internal combustion engine configured to produce exhaust; an aftertreatment system in exhaust receiving communication with the hydrogen internal combustion engine, the aftertreatment system comprising a catalyst member; a sensor coupled to the aftertreatment system; and a controller configured to: receive, from the sensor, data corresponding to a characteristic of the aftertreatment system, determine, based on the characteristic, a performance value corresponding to the catalyst member, compare the performance value to a threshold, cause the hydrogen internal combustion engine to operate in a first engine operating mode when the performance value does not exceed the threshold, and cause the hydrogen internal combustion engine to operate in a second engine operating mode when the performance value exceeds the threshold.

The invention belongs to the field of carbon dioxide adsorbents, and particularly relates to a carbon dioxide adsorbent, a preparation method and application thereof. The disclosed carbon dioxide adsorbent comprises: active particles of a core-shell structure; the core body of the active particle comprises at least one of CaO or MgO; a shell of the active particles comprises at least one of Ca (OH) 2 or Mg (OH) 2. The carbon dioxide adsorbent provided by the invention has a core-shell structure, the shells of the active particles can capture CO2 at room temperature to about 300 DEG C, and the cores of the active particles can capture CO2 at 300 DEG C to 700 DEG C, so that the carbon dioxide adsorbent has CO2 capture performance in a wide temperature range.

Methods and systems are provided for optimizing a performance of a vehicle while maintaining vehicle emissions below a threshold. In one example, a method for a controller of a vehicle comprises adjusting an operating parameter of the vehicle in response to a margin between a moving average tailpipe NOx emissions and a threshold tailpipe NOx emissions decreasing below a threshold NOx emissions margin, the moving average tailpipe NOx emissions calculated at regular intervals over a plurality of overlapping moving average windows (MAWs) of measured tailpipe NOx emissions. The threshold tailpipe NOx margin may be predicted based on expected engine-out NOx emissions of the vehicle, current NOx emissions sensitivities, and / or a predicted catalyst conversion efficiency in relation to the expected engine-out NOx emissions.

The invention relates to the technical field of power energy and ship resistance reduction, and discloses an internal combustion engine compressed air and electric supercharger ship bubble resistance reduction air supply control system which comprises an internal combustion engine set, an electric supercharger, an electric supercharger, an electric supercharger, an electric supercharger, an electric supercharger, an electric supercharger, an electric supercharger, an electric supercharger, an electric supercharger, an electric supercharger and an electric supercharger, and the internal combustion engine set serves as a power source of the whole system and generates excessive compressed air by delaying the closing moment of an intake valve during conventional operation; the gas-liquid separator is arranged on one side of the internal combustion engine set and used for separating liquid impurities of the compressed air and discharging the liquid impurities regularly; the filter is arranged on the side, away from the internal combustion engine set, of the gas-liquid separator and used for further filtering the compressed air; the first gas storage tank is arranged on the side, away from the gas-liquid separator, of the filter. Compressed air of the internal combustion engine and exhaust gas of the internal combustion engine are used for replacing traditional independent air compression equipment, the effect of reducing the requirement for additional compression equipment is achieved, the problem that a traditional ship bubble drag reduction air supply system is high in energy consumption is solved, the energy utilization efficiency of ship operation is improved, and the overall energy consumption cost is reduced.

The invention relates to the technical field of generator exhaust, and discloses a generator outlet exhaust pipe structure which comprises a connector and a vertical exhaust pipe, the bottom end of the connector is directly connected with the air outlet end of a generator, and the connector and the vertical exhaust pipe are connected through a metal bellow expansion joint. A vibration reduction component is arranged on the outer wall of the vertical exhaust pipe, and a temperature control component is arranged in the vertical exhaust pipe; the vibration reduction component comprises a fixed frame and a sliding frame, the fixed frame is connected with a wall and other fixed structures, thick springs and thin springs are used for forming a composite vibration reduction spring structure, and when the vertical exhaust pipe is subjected to low-frequency vibration, the displacement of the exhaust pipe is small, and at the moment, only the thin springs deform; when the vibration frequency rises and the displacement amount is too large, the thick spring starts to be connected with the thin spring in parallel for bearing, the variable stiffness characteristic is formed, the good vibration reduction effect is achieved, and meanwhile the damper works to absorb kinetic energy of vibration.

The invention provides a ship LNG fuel supply and tail gas carbon dioxide capture system. The ship LNG fuel supply and tail gas carbon dioxide capture system comprises an LNG storage tank, a CO2 separation device, a CO2 compressor, an ejector, an LNG vaporization heater, a mixed gas heat exchanger, a flash tank, a liquid CO2 storage tank, a flue gas heat exchanger and an engine. According to the system, LNG cold energy and engine tail gas heat energy can be effectively utilized, and the energy consumption of the system is reduced.

The invention provides an ammonia-hydrogen engine aftertreatment device and a control method. The post-treatment device comprises an electric heater, an N2O decomposition catalyst, a selective catalytic reducer, an ammonia trapping catalyst, a sensor and a controller, the electric heater is arranged at the exhaust end of the ammonia-hydrogen engine, is powered and controlled by the controller and is used for heating exhaust of the ammonia-hydrogen engine. An N2O decomposition catalyst, a selective catalytic reducer and an ammonia trapping catalyst are sequentially arranged at the rear end of the electric heater; the sensors comprise three temperature sensors, one NOx sensor and one NH3 sensor; the controller receives a temperature signal of the temperature sensor and controls the working state of the electric heater according to the received temperature signal; and the controller receives the concentration signal of NOx and the concentration signal of NH3, and controls the working state of the electric heater according to the concentration signals. According to the invention, the decomposition efficiency of N2O can be improved, and the conversion efficiency of NOx can be improved.

Method for calculating NH3 and NOx concentrations downstream from an SCR system of an internal combustion engine (E) of a vehicle by means of a statistical module, the method comprising the following steps: using temperature measurements acquired upstream (T1) and downstream (T2) of the Selective Reduction Catalyst (SCR) as first input variables and NOx mass flow measurements acquired upstream (N1) and downstream (N2) of the SCR as second input variables; calculating an NH3 concentration downstream from the SCR catalytic converter as a function of the first and second inputs.

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.

The hydrogen energy power generation system comprises the hydrogen internal combustion engine, the output end of the hydrogen internal combustion engine is connected with the input end of a generator, and the output end of the generator is connected with a storage battery. A tail gas exhaust port of the hydrogen internal combustion engine is connected with the solid hydrogen storage module in a matched mode through the heat exchange module, and when hydrogen in the hydrogen internal combustion engine burns, heat contained in generated high-temperature tail gas is transmitted to the solid hydrogen storage module through the heat exchange module, so that a solid hydrogen storage material in the solid hydrogen storage module is heated; further, the solid hydrogen storage material releases hydrogen; a hydrogen inlet of the hydrogen internal combustion engine is connected with a first hydrogen discharge port of the hydrogen buffer tank, and a hydrogen inlet of the hydrogen buffer tank is connected with a hydrogen discharge port of the solid hydrogen storage module. By arranging the heat exchange module, high-temperature tail gas generated by the hydrogen internal combustion engine can be recycled, efficient and stable hydrogen absorption and desorption can be achieved while stable power generation is conducted, and the system is stable in operation, high in safety, high in energy utilization rate, efficient, energy-saving and environmentally friendly.

The invention relates to a method (200) for determining (290) the amount of NH3 contained in an exhaust gas (10) downstream of an internal combustion engine (1) using an NH3 and NOx sensitive NX sensor (17, 18, 19), comprising receiving (210) a sensor signal from the NX sensor and determining the amount of NH3 based on the sensor signal and depending (220, 240, 260) on the fulfillment of at least one condition (331, 332, 333), wherein the at least one condition (331, 332, 333) is the presence of an exhaust gas temperature exceeding a minimum exhaust gas temperature, in particular for the first time, as a first condition, and / or the presence of an exhaust gas temperature exceeding a maximum exhaust gas temperature as a second condition, and / or the presence of heat input into an exhaust gas system (120) upstream of the NX-Sensors (17, 18, 19), which exceeds a minimum heat input, as the first condition,and / or the presence of a heat input into an exhaust system (120) upstream of the NX sensor (17, 18, 19) that exceeds a maximum heat input, as the second condition. In embodiments of the invention, further conditions can also be checked, wherein, in particular, the presence of a sensor signal level that exceeds a minimum level can be used as a third condition, and / or the presence of a sensor signal gradient that exceeds a positive threshold can be used as a fourth condition. Furthermore, a computing unit (20) and a computer program for carrying out such a method (200) are proposed.

A silencer for a fuel cell vehicle includes: an internal pipe including a first drain disposed in a lower portion of an external circumferential surface thereof and configured to discharge water and a plurality of gas flow ports disposed in an upper portion of the external circumferential surface and configured to allow gas to flow therethrough; a housing surrounding the internal pipe and forming a space in which the water and the gas flow within the internal pipe; a drainage adjustment portion disposed inside the internal pipe and configured to open or close the first drain, wherein the drainage adjustment portion includes: a moving plate including a shape corresponding to a cross section of an internal space of the internal pipe and moving in an axial direction of the internal pipe according to flow of the gas.

A flow conditioner includes a group of flow conditioning units including a first flow conditioning unit and a second flow conditioning unit. The flow conditioner also includes a mixing space for developing a flow. The mixing space is located between the first and second flow conditioning units. One of the first or second flow conditioning units can include one or more of a shaper or a reducer, and the other of the first or second flow conditioning units can include one or more shapers.

In electrified vehicle, a charger is disposed above the machine-electric integrated unit, and an input / output port for electric power is provided on the power source chamber side of a battery disposed on the power source chamber side vertically downward with respect to the driver's seat. Further, the power control device is provided with a branching portion that branches an electric path from the battery, in which the power control device side of the first electric wiring connecting the input-output port and the power control device and the power control device side of the second electric wiring connecting the power control device and the charger are connected to each other.

A motor vehicle includes an internal combustion engine, an after-treatment device to treat first exhaust gases produced by the internal combustion engine, a first exhaust line configured to feed the first exhaust gases to the after-treatment device, combustion means configured to produce second exhaust gases with a combustion chamber and an injector device that can be controlled to inject the fuel into the combustion chamber, a second exhaust line configured to feed the second exhaust gases to the after-treatment device, a tank to hold the fuel, and a supply line configured to feed a fuel stream from the tank to the injector device, the supply line comprising a valve that can be controlled according to at least one first control mode and a second control mode, wherein the valve respectively allows and prevents a fuel flow passage to the injector device.

Exhaust assemblies for vehicles and methods of installing exhaust systems on vehicles are disclosed. An exhaust assembly for a vehicle includes an exhaust inlet to receive combustion products from a drive unit, a catalytic converter to control emissions from combustion products received by the exhaust system, and a first piping assembly coupled to the exhaust inlet and the catalytic converter.

The invention relates to an exhaust-gas aftertreatment unit (1) comprising a casing (2), a support structure (5) and a honeycomb body (3) which is secured to or supported on the support structure (5) by means of a plurality of support pins (4), wherein the support structure (5) has at least one at least partly circumferential frame (6). A plurality of spoke elements (7) are connected to the frame (6) at least in an end region (8), said plurality of spoke elements (7) having a minimum width, and the plurality of spoke elements (7) have a plurality of plateaus (9) which have a width that is at least 50% wider than the minimum width. At least two receptacles (10) are provided on at least one plateau (9) of the plurality of plateaus (9), and the receptacles (10) are designed to receive a pin end (11) of a support pin (4).

An apparatus (102) and a method (400) for improving the performance of a diesel engine (104) are disclosed. The apparatus (102) has a charge air cooler (114) and a cooling system (112). The cooling system (112) has an inlet (320) for receiving a heated fluid (106) generated using the waste heat of the diesel engine (104). The cooling system (112) is configured to use thermal energy from the heated fluid (106) to cool a fluid (118) within the cooling system (112). The charge air cooler (114) has a cool fluid inlet (224) fluidically connectable to the cooling system (112) to receive the fluid (118). The charge air cooler (112) is configured to cool an engine air (108A) to be supplied to the diesel engine (104) using the fluid (118), thereby increasing the performance and efficiency of the diesel engine (104).

Engine control unit for controlling an internal combustion engine to regenerate a particulate filter arranged in an exhaust system, the engine control unit comprising: at least one processor configured to receive a first signal from a first oxygen sensor for determining an oxygen content of an exhaust gas in the exhaust system downstream of the particulate filter and to receive a second signal from a second oxygen sensor arranged in the exhaust system upstream of the particulate filter, wherein the at least one processor is configured to compare the first and second signals to detect an increase or a decrease in the oxygen content of the exhaust gas in the exhaust system downstream of the particulate filter; and a memory device having instructions stored therein, coupled to the at least one processor; wherein the at least one processor is configured to control the lambda of the internal combustion engine in dependence on the first signal and the second signal; wherein the at least one processor is configured to decrease lambda when the comparison of the first and second signals indicates an increase in the oxygen content of the exhaust gas in the exhaust system downstream of the particulate filter.

A system, method, and apparatus for zero or low NOx emissions during a certain operating period are provided. A system can include an aftertreatment system including a catalyst. The system can include a pump coupled to at least an intake of an engine and an exhaust of the engine. The system can include a heater positioned downstream of the engine. The system can further include a controller coupled to at least the aftertreatment system. the pump, and the heater. During a warmup period for the aftertreatment system. the controller is configured to maintain the engine in an off state. initiate the heater to increase a temperature of the aftertreatment system while the engine is in the off state. and control the pump to generate an airflow directed from the intake to the heater to increase the temperature of the aftertreatment system.

An engine device supplies a low GHG fuel having low greenhouse gas emissions to drive an engine. The engine device 1 includes a liquid fuel tank, which is a storage unit that stores a fuel in a liquid state. Waste heat from the engine is utilized to vaporize the fuel supplied from the liquid fuel tank to the engine.

The present invention provides an exhaust gas purification catalyst in which platinum group metal migration from a catalyst layer to a base material during high temperature duration is suppressed. The exhaust gas purification catalyst disclosed herein includes a base material, a catalyst layer, and an intermediate layer arranged between the base material and the catalyst layer. The base material contains SiC. The catalyst layer contains a platinum group metal as a catalyst component. The intermediate layer contains substantially no platinum group metal. A product of a thickness of the intermediate layer (μm) and a specific surface area (m2 / g) of the intermediate layer is 1100 or more.