11970results about "Silencing apparatus" patented technology

A computing system is disposed remote from a vehicle and communicably coupled to the vehicle over a network. The computing system includes a communications interface, one or more processors, and memory storing instructions that when executed by the one or more processors, cause the one or more processors to receive a first emissions data packet from a vehicle controller, the first emissions data packet including a plurality of emissions values regarding operation of a vehicle; determine whether a first cumulative emissions value is greater than a threshold value; and responsive to determining that the first cumulative emissions value is greater than the threshold, performing, by the remote computing system, corrective operations.

The invention discloses a tail gas self-treatment low-emission zero-carbon ammonia hydrogen engine system and a control method, and the tail gas self-treatment low-emission zero-carbon ammonia hydrogen engine system comprises a pure ammonia flameless combustion ammonia decomposition system, a NOx decomposition system, an ammonia hydrogen engine, an air source and an ammonia gas source. The NOx decomposition system utilizes a thermal decomposition technology of nitrogen oxide to realize the reutilization of waste heat of combustion tail gas of the pure ammonia hedging type flameless combustion furnace and decompose the nitrogen oxide in the engine tail gas into nitric oxide, and the ammonia-hydrogen engine utilizes the combustion of the engine to do work, so that the tail gas of the pure ammonia hedging type flameless combustion furnace can be recycled, and the nitrogen oxide in the tail gas of the pure ammonia hedging type flameless combustion furnace can be recycled. Heat utilization of ammonia gas is achieved, and combustion-supporting tail gas needed by the pure ammonia opposite-flushing type flameless combustion furnace is generated.

The invention discloses a preparation method of an adsorption and reduction bifunctional catalyst for denitration of tail gas of a diesel vehicle. The preparation method comprises the following steps: uniformly loading a Pd component and a Cu component on the surface of a molecular sieve to prepare a corresponding Pd-based molecular sieve and a corresponding Cu-based molecular sieve; and then coupling the Pd-based molecular sieve and the Cu-based molecular sieve according to a certain proportion by using a solid-phase grinding means to obtain the adsorption and reduction dual-functional Pd-Cu / SSZ-13 catalyst. The adsorption and reduction bifunctional Pd-Cu / SSZ-13 catalyst prepared by the method not only has excellent SCR activity at the temperature of 200 DEG C or above, but also has good PNA capacity at the temperature of 200 DEG C or below, can realize high-efficiency denitration of diesel vehicle tail gas in a full-temperature section, and can be widely applied to a diesel vehicle tail gas after-treatment system.

The invention belongs to the technical field of three-way catalyst equipment, and discloses an anti-collision and anti-vibration three-way catalyst which is technically characterized by comprising a three-way catalyst shell, a plurality of sets of bearing rings distributed in parallel are arranged in an inner cavity of the three-way catalyst shell, and ceramic carriers are arranged in the bearing rings; a bearing ring is arranged on the surface of the three-way catalyst shell, a positioning mechanism matched with the bearing ring is arranged in an inner cavity of the three-way catalyst shell and comprises a supporting assembly and an adjusting assembly, an air guide mechanism is arranged on the surface of the bearing ring and comprises multiple sets of telescopic sleeves, storage assemblies and telescopic assemblies, and the storage assemblies are arranged on the telescopic sleeves. When the element catalyst shell is impacted, the supporting assembly and the adjusting assembly are arranged to be matched with each other, the multiple sets of bearing rings and ceramic carriers at the impact points can be automatically controlled to move towards the two sides correspondingly, and then the bearing rings and the ceramic carriers are effectively prevented from being damaged.

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.

The invention discloses a control method and system for DPF operation regeneration of a special vehicle, and the control method comprises the steps: obtaining a vehicle state parameter through an ECU, and judging whether the vehicle state parameter meets a DPF regeneration triggering request or not; and if the DPF regeneration triggering request is met, the running state of the vehicle is judged, and an idling state or an operation state is generated. And if the running state of the vehicle is the operation state, the ECU reminds a driver whether to enter a regeneration mode or not. And if the driver confirms to enter the regeneration mode, the engine enters the DPF regeneration mode to execute operation. And after DPF regeneration succeeds or fails, the engine quits the DPF regeneration mode. Therefore, according to the control method for DPF operation regeneration of the special vehicle, by adding the whole vehicle operation state parameter judgment conditions, DPF regeneration can be completed without stopping operation when the special vehicle continuously operates in the static state.

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.

An exhaust valve includes a pipe body connecting an upstream pipe and a downstream pipe for exhaust, a valve plate disposed inside the pipe body in a state of being attached to a rotary shaft that rotates by drive of an actuator, the valve plate configured to rotate to open / close an exhaust flow path inside the pipe body, and a stopper fixed inside the pipe body and configured to come into contact with the valve plate in a closed state. In the stopper, at least one of an upstream contact surface at which the valve plate makes contact and a downstream contact surface at which the valve plate makes contact runs along an inner peripheral surface of the pipe body at a position closer to an upstream side or a downstream side of the exhaust than an outer periphery of the rotary shaft.

A turbine engine assembly generates an exhaust gas flow that is communicated through a core flow path. The exhaust gas flow is split into a first exhaust gas flow and a second exhaust gas flow. Water from the second exhaust gas flow is condensed and extracted by a condenser. The extracted water is transformed into a steam flow within an evaporator system utilizing thermal energy from at least the second exhaust gas flow.

The present application discloses a method and system for an emission control device including a particulate filter with a bypass. In one example, the method includes bypassing the particulate filter when the exhaust gas has a reduced soot load and when the particulate filter has a reduced soot storage. The method further includes reducing the filter bypass flow and terminating or adjusting a deceleration fuel cut-off operation due to an exhaust gas temperature near the particulate filter being above a threshold.

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.

The invention relates to the technical field of engines, and provides a three-way catalyst fault diagnosis method and device and electronic equipment. Comprising the steps of entering a fault diagnosis mode under the condition that a fault diagnosis condition is met; the air-fuel ratio is adjusted, and signal changes of the front oxygen sensor and the rear oxygen sensor are monitored; based on the signal change, acquiring an oxygen storage amount measurement parameter; calculating a three-way catalyst performance monitoring index based on the oxygen storage amount measurement parameter; and if the three-way catalyst performance monitoring index is not lower than the preset diagnosis threshold value, it is determined that the three-way catalyst is normal. Fault diagnosis can be carried out on the three-way catalytic converter, so that whether the purification performance of the three-way catalytic converter meets the requirement or not can be judged, and emission performance control of an engine is facilitated.

The invention relates to the field of scavengers, in particular to a copper-based urea crystal scavenger for a vehicle and a preparation method of the copper-based urea crystal scavenger. The automotive copper-based urea crystal scavenger provided by the invention is prepared from the following raw materials: a copper-based catalyst, a surfactant, a foaming agent, a dispersing agent, a reducing pigment and deionized water, wherein the copper-based catalyst comprises copper acetate, the surfactant comprises AEO-10 and MOA-3PK, and the reducing pigment comprises methylene blue; the prepared automotive copper-based urea crystal scavenger is convenient to use, excellent in urea crystal melting effect and short in effective mileage, the environmental protection property of automobile running can be obviously improved after the automotive copper-based urea crystal scavenger is used, and meanwhile the effect of reducing the use cost of an automobile is remarkable.

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.

A marine drive comprising a powerhead that causes rotation of a driveshaft, a gearcase that supports a propulsor for propelling the marine drive in a body of water, a steering housing disposed between the powerhead and the gearcase, wherein the driveshaft or an extension thereof extends through the steering housing is operatively coupled to the propulsor, and a steering mechanism configured to steer the gearcase about a steering axis relative to the steering housing. The gearcase and steering housing are connected at a steering joint through which at least one of cooling water from the body of water is conveyed to the powerhead throughout steering movement of the gearcase and exhaust from the powerhead is conveyed to the body of water throughout steering movement of the gearcase.

A turbine engine assembly generates an exhaust gas flow (40) that is communicated through a core flow path (C). The exhaust gas flow (40) is split into a first exhaust gas flow (46) and a second exhaust gas flow (48). Water (56) from the second exhaust gas flow (48) is condensed and extracted by a condenser (54, 104). The extracted water (56) is transformed into a steam flow (52, 74) within an evaporator system (50) utilizing thermal energy from at least the second exhaust gas flow (48).

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 system includes an aftertreatment system and a controller coupled to the aftertreatment system. The controller is configured to generate a spatially resolved model of a catalyst of the aftertreatment system. The controller is further configured to adjust the spatially resolved model based on one or more sensed values from at least one sensor upstream of the one or more portions and at least one sensor downstream of the one or more portions.

The invention relates to an exhaust resonance tube of a two-stroke horizontally-opposed four-cylinder piston engine, which belongs to the field of two-stroke engines and comprises an exhaust manifold, a connecting component, an exhaust manifold and a tension spring component. One end of the exhaust manifold is provided with four branch air channels, and the other end of the exhaust manifold is a main air channel where the branch air channels converge. The four branch air passages are correspondingly connected with four exhaust ports of an engine respectively, and an air outlet of the exhaust manifold main air passage is in elastic airtight connection with an air inlet of the exhaust manifold through a connecting assembly. The exhaust manifold is a return reducing pipe, sequentially comprises a thin pipe section, a first diverging pipe section, a second diverging pipe section, an expansion pipe section, a rear taper pipe section and an exhaust tail pipe section and is used for adjusting contraction and expansion of exhaust waves in the exhaust manifold, and the phenomenon of back pressure is avoided. The tension spring assembly is used for vibration decoupling between the exhaust resonance tube and the engine. The two-stroke horizontally-opposed four-cylinder piston engine solves the problems that an existing two-stroke horizontally-opposed four-cylinder piston engine for the unmanned aerial vehicle has short-circuit loss, and the power is obviously reduced within a certain rotating speed range.

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 connection unit connects an electrical supply line to a connection element of a heatable exhaust gas system. The connection unit has a housing having a connection element receiving region extending in the direction of a first housing axis (G1) and a supply line receiving region extending in the direction of a second housing axis (G2). The connection element receiving region is open in a first axial connection element receiving region end region for receiving the connection element protruding from an exhaust gas system and is closed off in a second axial connection element receiving region end region. The supply line receiving region is open to the connection element receiving region in a first axial supply line receiving region end region and is open in a second supply line receiving region end region for receiving an electrical supply line.

The invention discloses an alcohol hydrogen engine system and a control method. The engine system comprises an engine, a methanol box, a methanol pump, a methanol heater, an NH3 reforming hydrogen production device, a hydrogen-rich gas storage tank, a urea box, a urea pump and an SCR aftertreatment system. The engine nozzle is a coaxial double-channel hydrogen and methanol nozzle, injection of two kinds of fuel can be achieved through one nozzle, and flexible control over different proportions of hydrogen and methanol can be achieved in the same combustion cycle. According to the method, the mode that the NH3 urea water solution is used for online preparation of hydrogen and liquid methanol for mixed combustion is adopted, the cold start problem of the methanol engine is solved, meanwhile, engine waste heat is effectively recycled, the fuel heat value grade is improved, and then the engine heat efficiency is improved; and the combustion speed can be effectively increased by adopting hydrogen gas to assist combustion, so that the heat efficiency of the engine is improved.

The invention belongs to the field of exhaust emission, and discloses a device and method for adjusting the active temperature of an SCR catalyst through a thermoelectric power generation system.The device comprises an engine cooling system, the engine cooling system is connected with a cold end radiator of the thermoelectric power generation system, and a thermoelectric power generation plate is connected with a storage battery through a power supply module; the second temperature sensor is arranged at an outlet of the electric heating device, the first temperature sensor and the second temperature sensor are connected with the engine control unit, the engine control unit is connected with the power supply module, the electric heating device is connected with the storage battery through the power supply module, and the engine control unit is used for controlling charging and discharging of the storage battery. When the SCR device is in the efficient temperature interval, the engine control unit controls the power supply module to charge the storage battery through the thermoelectric power generation system; and when the SCR device is out of the efficient temperature interval, the storage battery is used for discharging the electric heating device or controlling the engine cooling system to use a cold end radiator of the thermoelectric power generation system to forcibly dissipate heat so as to adjust the temperature of the SCR device.

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.

There is disclosed a power generation system. The power generation system comprises at least one combustion engine. The power generation system further comprises a power generation arrangement that is constructed and arranged to generate electricity from waste energy from the at least one combustion engine. The power generation arrangement comprises: an electro-turbo compounding engine; a high temperature turbine engine); and a low temperature turbine engine.

The invention relates to a urea injection pipe structure, a cleaning device and a cleaning method. The urea injection pipe structure comprises a connecting valve and an electromagnetic plug connector installed on the connecting valve, and a flow guide pipe and a conveying pipe are arranged on the two sides of the connecting valve respectively; the fixing disc is installed at the end of the conveying pipe, a plurality of first through holes distributed at equal intervals in the circumferential direction are formed in the fixing disc, and a conveying assembly matched with the first through holes is arranged in the conveying pipe and used for discharging urea in the conveying pipe through the first through holes; and the conduction regulation and control mechanism is arranged on the fixed disc and connected with the conveying assembly, the conduction regulation and control mechanism can act when the conveying assembly moves and adjust the conduction state of the first conduction hole, and when urea crystals are generated in the first conduction hole, the conduction regulation and control mechanism can be controlled to move through the conveying assembly, so that the conduction state of the first conduction hole is adjusted; therefore, the first via hole is always kept in a smooth state.

The present invention relates to a wall-flow filter for removing particles from the exhaust gas of an internal combustion engine, which comprises a coating F, which comprises a sintered material S, wherein material S comprises an oxide, oxide-hydroxide, carbonate, sulphate, silicate, phosphate, mixed oxide, composite oxide, molecular sieve or a mixture comprising two or more of these materials.

The invention discloses a detection circuit and a detection method for detecting whether a combustor is successfully ignited or not. The detection circuit comprises a combustor controller, an ignition coil, a first spark plug, a second spark plug, a first ignition high-voltage wire and a second ignition high-voltage wire. And the first ignition high-voltage wire is connected with the ignition coil and the first ignition electrode. And the first ignition high-voltage wire transmits a high-voltage pulse signal to the first ignition electrode. And the second ignition high-voltage wire is connected with the ignition coil and the second ignition electrode. And the second ignition high-voltage wire transmits a high-voltage pulse signal to the second ignition electrode. The first ignition electrode and the second ignition electrode are used for enabling high voltage difference between the first ignition electrode and the second ignition electrode to break down gas to form sparks, and fuel oil is ignited by the sparks to form flames. If the first ignition electrode, the second ignition electrode and the shell of the combustor form a loop to generate a current signal, it is judged that ignition succeeds; otherwise, judging that ignition fails.