27results about How to "Improve emission effect" patented technology

The invention discloses a combustion chamber wall surface pit array structure design method and a combustion chamber. The method comprises the following steps: extracting a three-dimensional fluid model and carrying out bench test; establishing and verifying an in-cylinder combustion and emission simulation model; performing temperature field bench test on the cylinder cover, the piston and the cylinder sleeve; establishing and verifying a heat transfer simulation model; establishing a heat engine coupling simulation model; parameterization design is conducted on the pit array structures on the piston, the cylinder sleeve and the cylinder cover, a collaborative optimization mathematical model of pit array structure design is established, an optimal solution set is obtained, and typical solutions are selected; key parts in the typical solution are machined, an installation test is carried out, and the optimal pit array structure design scheme is obtained through the test. According to the pit array structure obtained through the collaborative optimization design method, the weight of components can be reduced, a turbulent layer can be formed on the near wall face of the combustion chamber to promote oil-gas mixing, then nitric oxide and particulate matter are reduced, and the combustion performance of an engine is improved.

The invention provides an injection control method for a diesel-methanol dual-fuel engine, which comprises the following steps: acquiring a rotating speed signal, a load signal and a temperature signal of the engine, and determining initial diesel injection timing data and initial methanol injection timing data under the current working condition by combining preset respective injection MAP maps of dual fuels; according to the initial diesel injection timing data and the initial methanol injection timing data, the response time of each injector is fused, a dual-fuel injection time sequence model under a unified control framework is constructed, and the initial fusion injection moment is obtained; and according to the preliminary fusion injection time and the actually required injection duration, in combination with a preset injection priority rule, optimized dual-fuel injection time sequence control parameters are obtained through a self-adaptive genetic algorithm.

The invention discloses a power grid dispatching method and device and a storage medium. The method comprises the following steps: constructing an optimal power flow optimization model of a power grid system and a mobile energy storage vehicle optimization dispatching model; setting a first objective function and a first constraint condition of the optimal power flow optimization model, and setting a second objective function and a second constraint condition of the mobile energy storage vehicle optimization scheduling model; modeling the mobile energy storage optimization scheduling problem into a mixed integer linear programming problem, and solving the mixed integer linear programming problem based on the first objective function, the first constraint condition, the second objective function and the second constraint condition according to the node load and the carbon emission factor of the power grid system to obtain an updated path planning and charging and discharging scheme. According to the method, the carbon emission factor is introduced to fully consider the carbon emission characteristics of energy storage, the carbon emission is taken as a main optimization target, and the charging and discharging behaviors of the energy storage system can be dynamically optimized, so that the carbon emission can be effectively minimized, and the carbon emission effect can be effectively improved.

The utility model relates to the technical field of washing equipment, and discloses a dryer capable of avoiding steam scald, which comprises a shell, an exhaust pipe is sleeved on the top of the shell, the exhaust pipe penetrates through the shell and is communicated with the inner wall of the shell, and an air exhaust component is arranged on the end face of the exhaust pipe. According to the dryer capable of avoiding steam scalding, direct-through airflow can be converted into rotating airflow through rotation of the C-shaped pipe, the exhaust direction and range can be adjusted by controlling the direction and speed of the rotating airflow, diffusion and retention of hot air and water vapor can be avoided through the rotating airflow, and the exhaust efficiency and accuracy are improved; meanwhile, the rotating air flow formed by the C-shaped pipe has high kinetic energy and momentum, additional pushing force can be provided for an exhaust system, the exhaust speed and the exhaust capacity are improved, after being condensed, water vapor passes through the horn mouth and the inner wall of the shell and then is discharged out of the shell through the drainage pipe, and the situation that the water vapor is condensed and drips into the roller to scald operators is prevented.

The utility model provides an overhead valve guide air inlet type two-stroke engine which solves the problems that waste gas cannot be fully swept away due to the fact that a four-stroke working mode of a traditional overhead valve type engine is improved into a two-stroke working mode, and combustion efficiency and emission performance are poor. According to the technical scheme, the overhead valve guide air inlet type two-stroke engine comprises an engine body set and an air distribution mechanism provided with an overhead valve, an air guide pipe moving along with an air inlet valve rod through a support sleeve is arranged on the air inlet valve rod of the air distribution mechanism, the air guide pipe is close to the head of the air inlet valve, and a front end air outlet is reserved between the front end of the air guide pipe and the head of the air inlet valve. The rear port of the gas-guide tube communicates with the gas inlet channel; an air inlet cam of the air distribution mechanism is provided with an air inlet cam protruding part which pushes the front end of an air guide pipe of an air inlet valve to stretch into an inner cavity of the air cylinder body. By guiding and scavenging the inlet air, the engine can go deep into the cylinder body to purge the combusted waste gas, open the exhaust valve to work and fully sweep the waste gas, so that the scavenging efficiency is greatly improved, and the combustion efficiency and the emission performance are improved.

The invention relates to the technical field of vehicles, and provides an engine control device and a humidity measuring method. The method comprises the following steps: detecting the actual pump current of the wide-range front oxygen sensor in the current state; obtaining the theoretical pump current of the wide-area front oxygen sensor; comparing a current difference value Dip between the actual pump current and the theoretical pump current with a set threshold value, and if the current difference value is greater than the set threshold value, entering the next step; when the engine is in the humidity detection working condition, a natural gas injection quantity coefficient and a knock intensity indication coefficient are collected and are subtracted from corresponding preset standard values, and a knock difference value and a natural gas injection quantity difference value are obtained; calculating the relative humidity of the intake air of the engine; and by searching a preset conversion table of the relative humidity and the absolute humidity, obtaining the target humidity of the intake air of the engine. The technical problems that an intake oxygen sensor and an air mass flow sensor need to be additionally installed in traditional engine humidity measurement, the structure is complex, cost is high, and reliability is insufficient are solved.

The utility model relates to a benzene raw material feeding preheating device, which belongs to the technical field of chemical equipment and comprises a benzene raw material preheating device body, an exhaust pipe for exhausting is fixedly communicated with the outside of the benzene raw material preheating device body, and a filtering structure is arranged at the top end of the exhaust pipe. The filtering structure comprises a filtering box, a first filtering plate and a second filtering plate; the first filtering plate and the second filtering plate are detachably mounted in the filtering box; a mounting seat in sliding connection with the first filter plate and the second filter plate is arranged in the filter box, and fixing pieces connected with the mounting seat are arranged in the first filter plate and the second filter plate; the fixing piece comprises a sleeve, a reset spring arranged in the sleeve and two ends fixedly installed at the reset spring. According to the benzene raw material feeding preheating device, waste gas can be filtered, the situation that raw materials are discharged into air along with tail gas to cause atmospheric pollution is avoided, the gas discharging efficiency and effect are greatly improved, and therefore the beneficial effects of being high in practicability, capable of filtering the discharged tail gas and the like are achieved.

The utility model relates to flat bottom material bin sliding frame mechanism technical field discloses a kind of flat bottom material bin sliding frame mechanism, including installation bottom plate, the upper side of installation bottom plate is fixedly connected with electric push rod, the side output end of electric push rod is fixedly connected with first transmission rod, the outside of first transmission rod is fixedly connected with first toothed plate, the outside of first toothed plate is connected with first gear wheel with tooth, the inside of first gear wheel is fixedly sleeved with first connecting rod, the outside of first connecting rod below is movably sleeved with installation sleeve.The utility model discloses a kind of flat bottom material bin sliding frame mechanism, by being set second transmission rod, two sliding frame assemblies can be driven to move reversely, further enhance the scattering and push effect of material, improve the discharge effect of material, reduce material accumulation, by being set spring, first impact block and second impact block can be shock-absorbed and buffered, reduce sliding frame abrasion, prolong equipment service life.

The utility model relates to the field of electroplating waste gas groove edge air draft devices, and discloses an electroplating line efficient air draft device which comprises an air bin, a draught fan, a detector and a filter screen are fixedly connected in the air bin, an air pipe is fixedly connected to the outer wall of the air bin, and the air pipe is fixedly connected to the inner wall of the air bin. One end of the air pipe is fixedly connected with a filtering bin, a water tank is arranged in the filtering bin, an atomization assembly is arranged in the filtering bin, an electric guide rail is fixedly connected in the filtering bin, and the output end of the electric guide rail is fixedly connected with a motor. According to the electroplating waste gas treatment device, the problem that the waste gas emission effect is poor due to the fact that an air draft device lacks an optimized design aiming at waste characteristics during electroplating waste gas treatment is solved, and the purposes of improving the electroplating waste gas treatment efficiency and emission effect, reducing the environmental pollution risk and intelligently driving the filter plate at the same time are achieved, so that the electroplating waste gas treatment device is more accurate and efficient; and the sustainability of electroplating production is improved.

The utility model provides a multistage mixing device for alkyd paint. The alkyd paint multi-stage mixing device comprises a supporting table, the top of the supporting table is fixedly connected with a first box body, an air cylinder is fixedly installed at the top of the first box body, and the bottom of the air cylinder is fixedly connected with a first pushing frame. According to the alkyd paint multi-stage mixing device provided by the utility model, by arranging the air cylinders, when paint is mixed and needs to be discharged, the air cylinders are started, so that the two air cylinders can drive the first pushing frame and the second pushing frame to move up and down; at the moment, the first pushing frame and the second pushing frame which move up and down can scrape the inner wall of the first box body, so that paint adhered to the inner wall of the first box body can be pushed to the bottom of an inner cavity of the first box body by the first pushing frame and the second pushing frame, and the paint discharging effect is improved; and the problem that the paint is adhered to the inner wall of the first box body and is difficult to discharge, so that the paint is wasted is solved, and the saving effect during paint mixing is improved.

The present invention discloses an engine urea mixer, which belongs to the technical field of engine exhaust post-treatment devices, and solves the problem that there is no mechanical structure inside the existing urea mixer that can promote the mixing of urea and exhaust gas, resulting in poor mixing effect. The mixer includes a sleeve, a mixing tube is vertically inserted in the sleeve, a baffle is provided between the mixing tube and the sleeve to connect the two to separate the sleeve into an air inlet port and an air outlet port, a plurality of vents are provided on the upper periphery of the mixing tube to connect the air inlet port and the air outlet port, and each vent is provided with an inclined plate arranged outwardly on one side, and a spoiler connected to the inner wall of the sleeve is also provided in the sleeve on one side of the air outlet port; the top of the mixing tube is connected to a nozzle seat for installing a nozzle through a cover plate. The mixer of the present invention is applied to exhaust post-treatment, so that the reducing agent and the engine exhaust are fully and evenly mixed, and the structural layout of the diesel engine post-treatment system is reasonably optimized.

The utility model discloses a kind of oil-water separation filtering devices for numerical control machine tool, it is related to oil-water separation technical field.The utility model includes separation part, the separation part is for the oil-water separation of cooling liquid and waste water generated by numerical control machine tool;And oil discharge part, the oil discharge part is installed in the inside of separation part, the oil discharge part is for the oil dirt discharge generated by waste water surface layer.The utility model is by setting oil discharge part, specifically when oil dirt reaches the position on oil discharge pipe, it will flow from oil discharge pipe, to treat the oil dirt on the surface of waste water, in the process of discharging oil dirt, start electric heating tube on heating seat, to heat oil discharge pipe, make oil dirt in the inside of oil discharge pipe melt, to better discharge, reduce the situation of jamming, and when weather is colder, oil dirt agglomeration can also be prevented, and heat can be transferred to waste water made by baffle, can prevent the situation of agglomeration again.

The utility model provides a kind of engine guiding exhaust gas distribution mechanism, solved the problem that traditional overhead valve engine distribution mechanism is difficult to clean exhaust gas efficiently under two-stroke working mode, technical scheme is: including the overhead valve exhaust valve distribution assembly and intake valve distribution assembly being set on the engine combustion chamber cylinder head, exhaust valve rod has the gas guide pipe of being packaged with the movement of exhaust valve rod by support, gas guide pipe is close to exhaust valve head, and front end intake port is left between the front end of gas guide pipe and exhaust valve head, and gas guide pipe rear end port communicates exhaust passage.It is discharged exhaust gas by guiding exhaust, it can be applicable to two-stroke working engine, form independent lubricating system and crankshaft rotation complete once work, by guiding exhaust scavenging, improve combustion efficiency and emission performance, greatly improve the scavenging efficiency, and further improve engine working efficiency.

The present invention discloses a precombustion chamber and a vehicle having the same, wherein the precombustion chamber comprises a shell, a precombustion chamber is formed in the shell, a plug-in hole connected to the precombustion chamber and suitable for inserting the spark plug is formed on the shell, and a flame-spraying hole connected to the precombustion chamber is also formed on the shell, wherein the wall thickness of the precombustion chamber is greater than or equal to 10% of the diameter of the plug-in hole. According to the precombustion chamber of the present invention, by setting the wall thickness of the precombustion chamber to be greater than or equal to 10% of the diameter of the plug-in hole, the shell of the precombustion chamber has a certain strength, and the loss of heat dissipation energy of the shell structure can be effectively reduced, the temperature and energy of the flame flow can be effectively maintained, and the high-energy flame flow of the precombustion chamber can effectively ignite the mixed gas in the main combustion chamber, so that the mixed gas in the main combustion chamber is fully burned, the economy of the engine is improved, and the emission of the engine is improved at the same time.

The utility model provides an engine guiding scavenging valve mechanism which solves the problem that a traditional overhead valve type engine valve mechanism is difficult to efficiently sweep waste gas in a two-stroke working mode. According to the technical scheme, the air inlet valve air distribution assembly of the engine guiding scavenging air distribution machine comprises an air inlet valve rod arranged in an air inlet channel, the rear portion of the air inlet valve rod is connected with an air inlet valve cam and an air inlet valve spring pushing air inlet valve opening and closing air inlet, and an air guide pipe moving along with the air inlet valve rod is arranged between the air inlet valve rod and the air inlet valve head through a support. A front-end air outlet is reserved between the front end of the air guide pipe and the head of the air inlet valve, and a rear port of the air guide pipe is communicated with the air inlet channel. Waste gas is exhausted by guiding and scavenging the inlet gas, the two-stroke-type engine exhaust pipe can be suitable for a two-stroke-type working engine, the combustion efficiency and the emission performance are improved by guiding and scavenging the inlet gas, the scavenging efficiency is greatly improved, and then the working efficiency of the engine is improved.

The utility model relates to waste liquid treatment technical field discloses neutralization buffer cabinet and marine engine, wherein the neutralization buffer cabinet, including: cabinet, the inside of cabinet is divided into first oil removal area and second oil removal area by partition, and the bottom of partition is equipped with the communicating port of intercommunication of first oil removal area and second oil removal area, first oil removal area interval is equipped with waste liquid inlet and oil outlet, and the oil outlet is installed in the upper of waste liquid inlet and is located the oil layer position of first oil removal area, and the bottom of first oil removal area is equipped with first aeration disc, second oil removal area interval is equipped with lye inlet and overflow port, and the bottom of second oil removal area is equipped with second aeration disc, the utility model discloses utilize the difference of oil -water density in first oil removal area, and the oil and oil residue that float up are discharged through oil outlet, realize oil liquid preliminary separation, in second oil removal area, and the oil grease in waste liquid happens saponification reaction by the lye that is passed in, further remove the oil grease in waste liquid, and the oil grease removal effect is better.

This invention discloses a method for monitoring the opening of a mechanical pressure relief valve in a high-pressure common rail system, comprising the following steps: Step 1, real-time monitoring of the actual rail pressure and the target rail pressure; Step 2, calculation of the gradient of the target rail pressure change; Step 3, determining whether to calculate the gradient of the actual rail pressure change based on the gradient of the target rail pressure change; if yes, proceed to Step 4; otherwise, return to Step 2; Step 4, calculating the gradient of the actual rail pressure change, and determining whether the pressure relief valve is open based on the gradient of the actual rail pressure change. This invention monitors the opening status of the pressure relief valve based on the gradients of the target rail pressure change and the actual rail pressure change, which can effectively improve the accuracy of monitoring the opening status of the pressure relief valve, thereby improving the operational reliability of the common rail system.

The invention discloses a center-staged low-emission combustion chamber head with an efficient anti-backfire structure, and belongs to the technical field of low-emission combustion chamber heads. Comprising a pre-combustion stage part, a main combustion stage part and an anti-backfire structure located between the pre-combustion stage part and the main combustion stage part. Fuel oil in the pre-combustion-stage component is ejected out through a pre-combustion-stage centrifugal nozzle, so that a solid conical atomization field is formed; fuel oil in the main combustion stage component is injected into a main combustion stage annular channel through a main combustion stage transverse fuel oil direct injection hole to form an annular atomization field, and combustible premixed oil gas is formed after the fuel oil is mixed with air in a main combustion stage first-stage radial swirler. The anti-backfire structure provides an anti-backfire air wall for the interior of the main combustion stage annular channel, an output port of the anti-backfire air wall is located on the inner wall face of the main combustion stage, the included angle between the output port and the inner wall of the main combustion stage on the outlet side of the main combustion stage annular channel is an acute angle, and the output port and the inner wall of the main combustion stage are used for preventing main combustion stage flames from extending towards upstream premixed oil gas. The tempering phenomenon is efficiently prevented, and therefore potential safety hazards caused by tempering are prevented.

A smart tractor hybrid power system with supercapacitor includes a range extender, a power battery, a supercapacitor, a traction motor, a PTO motor, a low-voltage battery, two DC / DC converters and a DC / AC converter. The range extender is electrically connected to the power battery, the two DC / DC converters and the DC / AC converter through a DC bus, the power battery is electrically connected to the second DC / DC converter and the DC / AC converter, the second DC / DC converter is electrically connected to the low-voltage battery, the first DC / DC converter is electrically connected to the supercapacitor, the supercapacitor is electrically connected to the DC / AC converter, the DC / AC converter is electrically connected to the traction motor and the PTO motor, the traction motor is mechanically connected to the transmission, the transmission is mechanically connected to the central transmission, and the central transmission is mechanically connected to the rear wheel. The present invention controls the range extender, the power battery and the supercapacitor based on the information provided by the intelligent driving system, which not only protects the power battery, but also improves the power, fuel economy and emission of the tractor.

The utility model provides a kind of engine guiding scavenging intake valve, solve the problem that traditional overhead valve type engine intake valve is difficult to efficiently clean exhaust gas under two-stroke working mode to extend into engine combustion chamber, technical scheme is: the engine guiding scavenging intake valve body includes intake valve stem with intake valve head, technical key point is: intake valve stem has the gas guide pipe that is equipped with bracket and moves with intake valve stem, gas guide pipe is close to intake valve head, gas guide plate for guiding scavenging is set between gas guide pipe and intake valve head, gas guide outlet is set between gas guide pipe and gas guide plate.It can be applicable to two-stroke working engine, improve combustion efficiency and emission performance by air intake guiding scavenging, greatly improve the scavenging efficiency, and then improve engine working efficiency.

The ostomy bag convenient to exhaust comprises an ostomy bag body, the ostomy bag body is connected with a connecting port and a sticking piece, the ostomy bag body is connected with a positioning pipe, the ostomy bag body is provided with an exhaust port, a positioning adsorption block is connected into the positioning pipe, the positioning adsorption block is connected with a movable adsorption block in an adsorption mode, the movable adsorption block is connected with a push rod, and the push rod is connected with a sealing block. The sealing block is provided with a baffle connected with the ostomy bag through a connecting plate, a fixing wire is inserted into the baffle, the bottom of the ostomy bag is connected with a conveying bag, and the bottom of the conveying bag is connected with a bag outlet and a liquid discharging pipe. The ostomy bag has the advantages that the automatic exhaust device is arranged, so that the ostomy bag cannot be in an excessive expansion state in the using process, a patient can conveniently carry the ostomy bag, and the ostomy bag is not prone to burst when making contact with an external object; a positioning device is arranged, so that a user can close the automatic exhaust function conveniently; two discharging devices are arranged, so that the discharging efficiency and the discharging effect of the ostomy bag are effectively improved.

The utility model belongs to the technical field of heat exchange, and particularly discloses a flow guide assembly, a condensation heat exchange device and gas water heating equipment. The flow guide assembly comprises a mounting frame and flow guide plates, the mounting frame is of a rectangular frame structure, the flow guide plates are arranged on each side of the mounting frame and extend in the length direction of the corresponding edge of the mounting frame, and the flow guide plates incline towards the center direction of the mounting frame from bottom to top; and the included angle of the guide plate relative to the vertical direction can be adjusted. The condensation heat exchange device comprises a condensation shell with an atomization shell and the flow guide assembly, and the installation frame is installed at the upper end of the atomization shell. According to the utility model, the smoothness of water mist and flue gas emission can be improved, and the water mist and flue gas emission effect is improved.

The invention relates to the technical field of automobile exhaust, and discloses an automobile exhaust device which comprises an exhaust protection structure, a lower flow guide mechanism is arranged at one end of the exhaust protection structure, a pump flow anti-immersion mechanism is installed in the exhaust protection structure, and an upper edge constant pressure mechanism is installed on the surface of the exhaust protection structure. A heat dissipation supporting mechanism is arranged at the top of the exhaust protection structure, and a flow guide soft connection mechanism is arranged at one end of the heat dissipation supporting mechanism. According to the automobile exhaust device, through the arrangement of the exhaust protection structure, the lower flow guide mechanism, the pump flow anti-immersion mechanism, the upper edge constant pressure mechanism, the heat dissipation supporting mechanism and the flow guide soft connection mechanism, automobile exhaust can be accelerated and pressurized through the pump flow anti-immersion mechanism when an automobile wades into water, and the exhaust emission capacity is improved; and meanwhile, the rotating flow pushing spiral fan continuously pushes outwards to actively drain water, so that water flow is prevented from entering the silencer.

The application provides an engine high-pressure oil pump system, an engine assembly and a vehicle, and relates to the technical field of vehicle structures. The engine high-pressure oil pump system comprises: a high-pressure oil pump inlet pipe, a middle-section connecting oil pipe and a high-pressure oil pump body connected in sequence; and an elastic fuel sensor arranged on the high-pressure oil pump inlet pipe; wherein the elastic fuel sensor is suitable for detecting the ethanol content of fuel in the high-pressure oil pump inlet pipe. The elastic fuel sensor is directly installed at the high-pressure oil pump inlet pipe through integrated design, the length of the oil circuit is shortened, and the detection accuracy is improved.

The invention relates to the technical field of electric heating glass, and discloses an electric heating glass annealing process based on intelligent temperature control, which comprises the following steps: feeding glass through a feeding mechanism so as to convey the glass; the exhaust mechanism is used for filtering waste gas, so that particulate matters are filtered; exhaust of waste gas is achieved through the exhaust mechanism, so that the waste gas is conveyed conveniently; the waste gas is cooled through the cooling mechanism; by reducing shaking generated when a traditional conveying belt moves, the moving stability is improved, and glass loss caused by jolting generated in the conveying process is reduced; particulate matters in waste gas can be captured and blocked through the two filter screens, and diffusion of the particulate matters is reduced; the rotating exhaust fan can cool the waste gas, so that heat accumulation caused by poor flowability during waste gas emission is reduced, and the waste gas emission effect and efficiency are improved; and by cooling the waste gas, the influence of high-temperature waste gas emission on the surrounding environment is reduced, and the safety of waste gas emission is improved.

The utility model belongs to the technical field of waste heat utilization of biogas power generation systems, and particularly relates to a high-temperature flue gas waste heat recovery and evaporation device for a generator set boiler, which comprises a generator body. Through the arrangement of the generator body, biogas in the biogas engine can be driven through the connecting pipeline, demineralized water input through the demineralized water device can be heated to about 80 DEG C through the water-cooling heat exchanger, and heat of circulating water entering the water-cooling heat exchanger is fully absorbed; gas in the biogas engine can enter the smoke exhaust heat exchanger for heat exchange through the first gas conveying pipe by means of the demineralized water device in the waste heat boiler, after the gas passes through the smoke exhaust heat exchanger, heat of smoke is absorbed, the temperature of demineralized water is increased to about 110 DEG C, the temperature of smoke exhausted into the atmosphere is reduced to about 90 DEG C, and the heat exchange efficiency is improved. The waste heat utilization efficiency of the high-temperature flue gas waste heat recovery evaporation device for the generator set boiler is enhanced.