57 results about "Exhaust emission" patented technology

This work vehicle is provided with: an engine 21; a muffler 22 which is disposed adjacent to the engine 21 and discharges exhaust of the engine 21 to the outside; a cooling unit 23 which cools hydraulic oil stored in a hydraulic oil tank 43 while circulating the hydraulic oil by a hydraulic pump 10; and a separation plate 53 which separates the muffler 22 and the cooling unit 23.

To provide an air conditioning system that effectively regulates the heat of exhaust air and discharges temperature-controlled exhaust air to the outside. [Solution] The present invention comprises an outdoor unit, an indoor unit, a first refrigerant piping for circulating refrigerant between the outdoor unit and the indoor unit, a third heat exchanger for heating or cooling exhaust air discharged from the exhaust port of the outdoor unit, wherein the exhaust air heated or cooled in the third heat exchanger is discharged outside the air conditioning system, and a second refrigerant piping for circulating a portion of the refrigerant between the outdoor unit and the third heat exchanger so that the heating or cooling in the third heat exchanger is performed using a portion of the refrigerant that has been heat-exchanged with outside air in the first heat exchanger.

The invention relates to the technical field of fuel ratio regulation and control, in particular to a fuel self-adaptive ratio regulation and control method for a waste multi-fuel combustion boiler, which comprises the following steps of: obtaining combustion characteristic parameters of various fuels, calculating combustion performance values of the various fuels, grouping and dividing the fuels according to the combustion performance values, and regulating and controlling the fuel ratio of the waste multi-fuel combustion boiler. Calculating a difference value of two groups of fuel combustion performance mean values to obtain an initial performance difference value, determining a fuel proportioning parameter according to the initial performance difference value, monitoring and analyzing temperature data and waste gas emission amount data in a boiler operation process, calculating a temperature fluctuation value and a waste gas emission fluctuation value to obtain a combustion quality influence coefficient, and calculating a combustion quality influence coefficient according to the temperature fluctuation value and the waste gas emission fluctuation value; collecting a steam pressure oscillogram and feed water flow in equipment operation parameters, calculating a steam pressure fluctuation value and a feed water flow fluctuation value to obtain an equipment operation influence coefficient, performing weighted fusion on the combustion quality influence coefficient and the equipment operation influence coefficient to obtain a comprehensive influence value, and performing calibration analysis on an initial performance difference value according to the comprehensive influence value; therefore, the self-adaptive regulation and control of the fuel ratio parameters are realized.

The application provides a kind of automobile exhaust pollutant comprehensive detection device and method, it is related to air pollution detection technical field, automobile exhaust pollutant comprehensive detection device includes outer tube and exhaust sensor, support portion is equipped in outer tube, blade and cleaning piece can be rotated together on support portion, when the exhaust of temperature less than preset value is passed into outer tube, it can drive blade and cleaning piece to rotate, so that cleaning piece can be contacted with exhaust sensor surface and relative movement is generated, so that the pollutant adhered to exhaust sensor surface can also be cleaned in the stage of automobile cold start, guarantee the operation stability of exhaust sensor and the accuracy of detection data.When the exhaust of temperature greater than or equal to preset value is passed into outer tube, blade and cleaning piece coincide with support portion in the circumference of outer tube, to reduce the obstruction to exhaust flow path, reduce the influence on exhaust emission, while heating module operates.

This invention discloses a method, apparatus, equipment, and medium for controlling a tunnel ventilation fan based on tunnel environment monitoring, relating to the field of automated energy-saving control technology. The method includes: acquiring a vehicle model image set and vehicle images and spectral imaging images of vehicles entering the tunnel, wherein the vehicle model image set includes sample images of several different vehicle models; identifying the vehicle model; using the spectral imaging image of each vehicle as input, monitoring exhaust emissions according to the vehicle model using a vehicle exhaust emission model, obtaining exhaust emission monitoring values, and controlling the operating state of the tunnel ventilation fan based on the exhaust emission monitoring values. This solves the problems of existing ventilation methods for long-distance tunnels, which cannot be individually controlled according to the tunnel environment, resulting in high energy consumption and high maintenance and operating costs.

The present invention aims to provide an exhaust gas purification device for an engine that suppresses the deterioration of exhaust emissions. The engine exhaust gas purification device includes: a first catalytic converter comprising a first housing and a first catalyst carrier held within the first housing; a second catalytic converter located downstream of the first catalytic converter and comprising a second housing and a second catalyst carrier held within the second housing; a connecting pipe connected between the first housing and the second housing, with its central axis bent; the first catalyst carrier having a downstream end face; the first housing having a downstream end protruding downstream from the downstream end face; the second catalyst carrier having an upstream end face; and a gap being formed between the downstream end face and the upstream end face in a direction perpendicular to the downstream end face.

The utility model provides a kind of low-speed marine diesel engine emission test sampling probe with cleaning core, it is related to low-speed marine diesel engine emission test sampling probe technical field, including sampling probe and built-in cleaning core;The cleaning core is composed of pipeline, high-temperature-resistant silica gel gasket and spray head, wherein, the inlet of pipeline is connected with cleaning agent source, and outlet is fixedly connected with spray head;High-temperature-resistant silica gel gasket is interferencely covered on pipeline, and its outer diameter is greater than the inside diameter of sampling probe, to realize dynamic sealing and isolate high-temperature flue gas;Spray head is provided with 8 evenly distributed small holes, for directional spraying cleaning agent;The cleaning core can rotate and move axially, cover all inner wall regions of sampling probe.The utility model is additionally provided with rotatable and axially movable cleaning core inside low-speed marine diesel engine emission test sampling probe, to realize non-disassembly type comprehensive cleaning inner wall, save maintenance time, completely remove adhered pollutants, and guarantee that emission detection error rate is ≤±1%.

The application relates to a marine exhaust treatment system and a ship, wherein the marine exhaust treatment system comprises a methane oxidation catalyst, a heat exchanger comprising a first heat exchange flow channel and a second heat exchange flow channel capable of heat exchange; the gas inlet end of the first heat exchange flow channel is communicated with a gas collecting pipeline connected with the exhaust outlet of an engine, and the gas outlet end of the first heat exchange flow channel is communicated with the gas inlet of the methane oxidation catalyst; the gas inlet end of the second heat exchange flow channel is communicated with the gas outlet of the methane oxidation catalyst, and the gas outlet end of the second heat exchange flow channel is communicated with the exhaust outlet of the marine exhaust treatment system. In the marine exhaust treatment system of the application, the waste heat generated by the methane oxidation catalyst itself is used to preheat the exhaust gas entering the methane oxidation catalyst, the temperature of the exhaust gas entering the methane oxidation catalyst is effectively improved, the methane conversion efficiency of the methane oxidation catalyst is improved, and the ship exhaust emission requirement is met.

The utility model relates to motor vehicle exhaust detection technical field discloses a motor vehicle exhaust emission rapid detection device, including support disc, the front side fixed connection of support disc has support column no.

A method for determining the state of a driver warning system for preventing impermissible exhaust emissions of a vehicle (10), which has an internal combustion engine (12) with an exhaust aftertreatment system (15) and an on-board monitoring system (38), is described, comprising the following steps: - collecting a plurality of independent on-board monitoring data records (44-52) using the on-board monitoring system (38), - evaluating a defined number of the individual on-board monitoring data records (44-52) in an evaluation unit (42), - transmitting the evaluations to a driver warning system coordinator (54), - transforming each evaluation of the individual on-board monitoring data records (44-52) in the driver warning system coordinator (54) into its own bit submask (56-64), which has three binary digits, one of which takes the value 1 and the other two the value 0 depending on the evaluation.- Transferring the values ​​of the bit submasks (56-64) to defined positions of three higher-level bitmasks (66, 67, 68), each of which has a number of binary digits corresponding to the number of lower-level bitmasks (56-64), whereby each first binary digit of each bit submask (56-64) is assigned a defined binary digit in the first higher-level bitmask (66), each second binary digit of each bit submask (56-64) is assigned the same defined binary digit in the second higher-level bitmask (67), and each third binary digit of each bit submask (56-64) is assigned the same defined binary digit in the third higher-level bitmask (68), - Assigning and outputting a state of the driver warning system depending on the binary digits of the three higher-level bitmasks (66, 67, 68) that are assigned the value 1. This enables the tracing of the driver warning system states.

In work vehicles equipped with an engine, this prevents a decrease in the cooling efficiency of the cooling unit. [Solution] The system is equipped with an engine 21, a muffler 22 positioned next to the engine 21 and for discharging the exhaust from the engine 21 to the outside, a cooling unit 23 that cools the hydraulic fluid stored in the hydraulic fluid tank 43 while circulating it with a hydraulic pump 10, and a partition plate 53 that separates the muffler 22 and the cooling unit 23.

Systems and methods for controlling an aftertreatment system are provided. A method includes: receiving a first input target and a first input value, the first input target and the first input value associated with a first aftertreatment system component; receiving a second input target and a second input value, the second input target and the second input value associated with a second aftertreatment system component; estimating a nitrous oxide value based on at least the first input value and the second input value; determining a first output target based on at least the first input target, the second input target and the nitrous oxide value; and controlling the aftertreatment system based on the first output target.

Systems and methods for controlling an aftertreatment system are provided. A method includes: receiving a first input target and a first input value, the first input target and the first input value associated with a first aftertreatment system component; receiving a second input target and a second input value, the second input target and the second input value associated with a second aftertreatment system component; estimating a nitrous oxide value based on at least the first input value and the second input value; determining a first output target based on at least the first input target, the second input target and the nitrous oxide value; and controlling the aftertreatment system based on the first output target.

The present application provides an engine control device that suppresses deterioration of exhaust emission. The engine control device includes a learning unit that learns a steady-state error of an air-fuel ratio deviation in air-fuel ratio feedback control based on an air-fuel ratio deviation of an air-fuel ratio of an engine from a target air-fuel ratio as an air-fuel ratio learning value; an acquisition unit that acquires a fuel amount that dilutes engine oil, i.e., a dilution fuel amount; and a determination unit that determines whether the dilution fuel amount before engine oil is replaced is below a threshold value in a case where the engine oil is replaced, the learning unit resets the air-fuel ratio learning value to an initial value in a case where the determination unit makes a positive determination, and maintains the air-fuel ratio learning value in a case where the determination unit makes a negative determination, the threshold value being set to an upper limit value of the dilution fuel amount that is more likely to shorten a time required until the air-fuel ratio learning value converges after the engine oil is replaced than to maintain the air-fuel ratio learning value in comparison with resetting the air-fuel ratio learning value to the initial value.

The application discloses a green wave vehicle speed guiding method based on GA-PSO, realizes low-delay information interaction and unified queuing coordination between vehicles through a bidirectional navigation topological structure, effectively alleviates queuing oscillation under high-density traffic, and significantly improves intersection traffic throughput and queuing stability; a UV-TSA model is used to process the acceleration and deceleration process in stages, so that the speed conversion is continuous and smooth, the driving comfort is greatly improved, and the vehicle fuel consumption and exhaust emission are reduced; the GA-PSO hybrid algorithm combines the advantages of genetic operation and particle swarm optimization, enhances the population diversity, realizes efficient global optimization of the speed trajectory under multiple constraint conditions, solves the problem that traditional green wave vehicle speed guiding depends on single vehicle decision and has poor adaptability, and effectively alleviates urban intersection congestion and environmental pollution.

This invention relates to the field of straw treatment technology, specifically a mobile high-temperature roasting and micro-carbonization in-situ straw return-to-field device. The device includes a furnace chamber, inside which is a drum body. A feeding and ignition mechanism is mounted on the surface of the biomass combustion furnace body. A high-efficiency combustion mechanism is installed inside the furnace chamber, and a waste gas treatment mechanism is installed inside the exhaust gas purification box. This invention, by integrating high-temperature roasting and micro-carbonization technology, solves the problems of high processing costs, low in-situ field treatment efficiency, insufficient heat utilization, and substandard exhaust emissions in existing technologies, achieving efficient, clean, and high-value in-situ straw return-to-field utilization.

This invention discloses a method for retrieving vehicle exhaust emission rates based on multispectral imaging, belonging to the technical field of vehicle exhaust emission rate retrieval methods. The method includes acquiring a multispectral image sequence of the target vehicle's exhaust plume in the ultraviolet band; denoising and distortion correction of the multispectral image sequence, and fusing dual-band information to enhance feature representation, resulting in a preprocessed optical thickness image sequence; extracting plume motion features using optical flow based on the optical thickness image sequence to generate a preliminary velocity field; optimizing the preliminary velocity field using a deep learning network, combining traditional optical flow results with neural network output to obtain a hybrid velocity field with improved accuracy; constructing a concentration spatial distribution image based on the optical thickness image sequence and the hybrid velocity field; and inputting the concentration spatial distribution image, the hybrid velocity field, and vehicle driving state parameters into a deep learning model embedded with physical constraints to invert the initial emission rate field.

This utility model relates to the field of automotive exhaust manifold technology, specifically a multi-angle positioning milling fixture for exhaust manifolds. It includes a drive component, with columns symmetrically mounted on the top of the drive component. A lifting component is vertically slidably mounted on the column, and a clamping component is mounted on the lifting component. A sleeve is vertically provided on one side of the lifting component, which slides vertically with the column and can rotate on the column to adjust the angle, and is locked in place by a locking bolt. In this multi-angle positioning milling fixture for exhaust manifolds, the vertical sliding and rotational engagement of the sleeve of the lifting component with the column allows for angle adjustment, and the locking bolt enables quick fixation, meeting the multi-faceted and multi-directional milling requirements of the exhaust manifold. It avoids the cumulative errors caused by multiple clamping operations, significantly improving the machining accuracy of each port and mounting surface, effectively ensuring the power performance and exhaust emission standards after engine assembly.

The application relates to the technical field of computational fluid dynamics and structural acoustic simulation, and particularly discloses a fluid-structure-acoustic coupling simulation method and device for an automobile exhaust emission system and a storage medium, which comprises the following steps: constructing a pipeline three-dimensional geometric model of the automobile exhaust emission system; performing finite element grid division on the pipeline three-dimensional geometric model; performing fluid dynamics simulation calculation on the pipeline finite element grid model; extracting flow field load of pipeline fluid characteristics; transferring pipeline flow field load data to a structure grid for fluid-structure coupling analysis according to heterogeneous grid data mapping; performing structural and acoustic coupling simulation analysis according to structural vibration response results; and realizing quantitative evaluation of the aerodynamic noise and structural vibration of the automobile exhaust emission system according to the structural vibration response results and the sound pressure distribution results of the internal sound field of the pipeline. The fluid-structure-acoustic coupling simulation method for the automobile exhaust emission system can realize collaborative analysis of the aerodynamic noise and structural vibration of the automobile exhaust emission system.

The utility model discloses a kind of engine three high mobile box type test benches, including test group and process group being installed on flatbed trailer, test group includes test container and the engine test system being set in test box, engine test system includes dynamometer, fuel consumption instrument, fuel temperature control device, intercooling temperature control device, three-dimensional fast tuning support, data collection sensor and data processor, engine test system is used to collect data collection and processing of engine exhaust emission test, engine intercooling test and engine fuel supply test;Process group includes process box and the auxiliary system being set in process box, and auxiliary system includes cooling water supply system, refrigerated water supply system, generator set, compressed air supply system and laboratory ventilation system.The beneficial effects of the utility model are: the technical scheme is integrated, modular design is realized, the efficient, real test of engine performance under extreme environment, with economy, environmental protection and practicality.

Method for performing at least one vehicle function of a vehicle (1) depending on a fuel mixture to be burned, comprising the steps: - Determining fuel mixture data (42) with respect to the fuel to be burned, wherein the determined fuel mixture data (42) are characteristic of at least one property of the fuel mixture to be burned; - Determining at least one vehicle size (46) for performing at least one vehicle function on the basis of the determined fuel mixture data (42) using a trained exhaust gas determination model of machine learning (32), wherein the trained exhaust gas determination model of machine learning (32) using the determined fuel mixture data (42) as input generates at least one combustion size (44) as output, wherein the combustion size is characteristic of at least one combustion property of the fuel mixture to be burned; - Performing at least one vehicle function based on the determined vehicle size (46).

This utility model relates to a pneumatic centering fixture for diesel engine exhaust aluminum components, comprising a base, an annular positioning seat on the base, at least three radial channels spaced circumferentially on the sidewall of the annular positioning seat, a top block slidably connected within the radial channels, and a pneumatic chuck mounted on the inner ring of the annular positioning seat. The jaws of the pneumatic chuck correspond to the top block and are used to push the inner end of the top block outward so that the outer end of the top block abuts against the inner cavity sidewall of the workpiece. This machining fixture facilitates the centering and positioning of the exhaust aluminum component blank.

The utility model discloses a kind of vehicle-mounted exhaust emission detection equipment fixing auxiliary devices for excavator, fixing auxiliary device includes host computer fixing device, exhaust flow fixing device, host computer fixing device includes bottom plate, the front, rear ends of bottom plate are all provided with the flanging structure of folding down, the end face of two flanging structures is all connected with two symmetrical distribution support lug plate by bolt, system main control unit is provided on bottom plate, system main control unit is fixed on bottom plate by two U-shaped pressing plate, and two U-shaped pressing plate is parallelly arranged, power supply unit is provided on the side surface of system main control unit, power supply unit is fixed on bottom plate by one U-shaped pressing plate, bolt and L-shaped lug plate are connected with bottom plate at the two ends of power supply unit, the utility model realizes the function of fixing different test unit at specified position, fixed wire, improves assembly efficiency.

An object of the present application is to provide an engine control device that suppresses deterioration of exhaust emission. An engine control device includes a calculation unit that calculates an estimated temperature of a catalyst that purifies exhaust gas of an engine; a determination unit that determines whether the estimated temperature at the time of engine start is lower than an activation temperature of the catalyst; and a control unit that, in the case where affirmative determination is made by the determination unit, executes catalyst warm-up control that warms up the catalyst using the engine, the calculation unit calculating the estimated temperature of the engine at the time of engine start for determination by the determination unit based on the catalyst temperature at the time of engine stop and a stop time from engine stop until start.

The application discloses a kind of dual-fuel engine air-fuel ratio coordinated regulation's executor assembly of engine technology technical field, including air regulation component and gas pressure supplement component, air regulation component includes air throttle and the pipeline being arranged in the both ends of air throttle;Gas pressure supplement component includes pressure tank, electromagnetic valve being communicated between pressure tank and air throttle inlet pipeline, air sensor being connected on air throttle inlet pipeline.The application is adjusted air-fuel ratio by setting pressure tank in coordination with air throttle, air throttle inlet gas pressure and flow are detected by air sensor, air pressure can be directly supplemented by the opening of electromagnetic valve, so that it can be rapidly supplemented with high-pressure air when load increases suddenly or accelerator is accelerated rapidly, its response speed is extremely fast, air suction amount can be maintained under the premise of power response rapidly, to make fuel combustion sufficient, exhaust emission is more environmentally friendly.

This invention belongs to the field of exhaust emission control technology and discloses an engine exhaust aftertreatment system and its operating method. The system includes a urea tank, a urea supply unit, a compressed air unit, a metering unit, a gas-liquid switching unit, an injection unit, and a control unit. The urea supply unit employs a multi-pump parallel and reflux regulation structure to achieve a stable and cyclical supply of urea solution. The metering unit is equipped with a pressure detection and pulse damping structure to improve injection metering accuracy. The gas-liquid switching unit and the injection unit form a tightly coupled structure to achieve rapid switching between compressed air and urea solution. The control unit performs pre-purge, injection, and delayed purging processes in automatic mode, and allows independent control of each execution unit in manual mode. This invention effectively reduces urea residue and the risk of crystallization blockage through gas-liquid coordinated injection and delayed purging mechanisms, while improving supply stability and injection response performance, thereby improving exhaust gas denitrification efficiency and system operational reliability.