25 results about "Automotive emissions" patented technology

The invention relates to the technical field of automobile exhaust pollution, in particular to a sensor-based automobile exhaust networking analysis system, which comprises a data acquisition module, a data processing and fusion module, an analysis and prediction module, an intelligent decision module, a data storage module and a user interaction module, the data processing and fusion module is used for processing the received pollutant component data, the data storage module is used for storing the pollutant component data, the analysis and prediction module is used for analyzing the pollutant component data in real time and predicting the tail gas emission trend, and the intelligent decision module is used for generating optimized vehicle operation parameters and providing maintenance suggestions. And the user interaction module provides a visual interaction interface and displays the tail gas emission data, the analysis result and the decision suggestion of the vehicle in real time. According to the automobile exhaust monitoring system, the technical problems existing in an existing automobile exhaust monitoring system are effectively solved, and the accuracy and reliability of data are remarkably improved.

The invention provides a vehicle OBD-based emission monitoring system, and relates to the technical field of vehicle exhaust emission monitoring, the vehicle OBD-based emission monitoring system comprises an OBD vehicle-mounted terminal and a cloud server, the OBD vehicle-mounted terminal and the cloud server carry out data interaction through a network, and the OBD vehicle-mounted terminal specifically comprises a connection module used for connecting a vehicle ECU and obtaining vehicle engine operation characteristic data; the sensor module is used for collecting vehicle driving characteristic data; the emission prediction module is used for performing prediction analysis on the vehicle emission condition based on the vehicle engine operation characteristic data and the vehicle driving characteristic data to obtain a vehicle emission prediction result; the communication module is used for uploading the vehicle emission prediction result to a cloud server; and the cloud server is used for receiving and storing the vehicle emission prediction result, analyzing whether the vehicle has an emission abnormal condition based on the vehicle emission prediction result, and pushing prompt information to the outside when the vehicle has the emission abnormal condition. According to the invention, the OBD-based vehicle emission monitoring accuracy can be improved.

This invention provides a fuel injection method for an engine, an engine, a vehicle, and a computer-readable storage medium, relating to the field of vehicle exhaust emission control technology. The fuel injection method provided by this invention includes the following steps: Before the engine reaches a stable idle speed, fuel is injected at a preset fuel pressure during the first intake stroke and the first compression stroke of each working cycle, wherein the fuel injection mass ratio of the first intake stroke to the first compression stroke is greater than 4:1, and the preset fuel pressure ranges from 20 to 50 MPa. When the engine speed is at a stable idle speed, fuel is injected during the second intake stroke and the second compression stroke of each working cycle at a preset fuel pressure, wherein the fuel injection mass ratio of the second intake stroke to the second compression stroke is greater than or equal to 4:1. This method ensures that the vehicle's exhaust emission level meets the requirements of Euro 6 emission standards without requiring a particulate filter, thus optimizing the engine's original emissions.

The invention relates to the related technical field of motor vehicle detection, and discloses a motor vehicle detection tail gas collecting device which comprises a holding rod, a connecting pipe fixedly connected to the bottom of the holding rod, a mounting seat fixedly connected to one end of the connecting pipe, a mounting head in threaded connection with the interior of the mounting seat, a sealing plug fixedly connected to the mounting head, and an air inlet formed in the sealing plug. A first one-way valve is arranged in the connecting pipe, and the other end of the connecting pipe is fixedly connected with a first connector; gas in the device is compressed and exhausted through the compressible air bag, then tail gas generated by an automobile is subjected to vacuum suction, so that foreign gas on the outer wall is prevented from being mixed into the tail gas of the automobile, the device is easy to operate, convenient to use and high in adjustability, and the practicability of the device is improved.

An automobile emission detection device disclosed by the present invention comprises a circular plate, a cylindrical sleeve penetrates through the circular plate and is rotatably connected with the circular plate through a fixed shaft, the inner wall of one end of the cylindrical sleeve is rotatably connected with a connecting pipe connected with an automobile exhaust pipe, and rectangular through grooves are symmetrically formed in the two ends of the connecting pipe. The inner walls of the rectangular through grooves are movably connected with first L-shaped rods conducting horizontal reciprocating motion, the ends, away from the connecting pipe, of the first L-shaped rods are fixedly connected with the circular plate, and the ends, away from the circular plate, of the first L-shaped rods are fixedly connected with arc-shaped plates matched with the inner wall of the connecting pipe. Connecting rods are fixedly connected to the opposite faces of the two arc-shaped plates, first cylindrical rods are fixedly connected to the opposite faces of the connecting rods, and a gas detector for detecting automobile exhaust is fixedly connected to one connecting rod. The automobile exhaust filtering device has the advantages that the automobile exhaust is filtered, and the air quality is further improved.

The invention provides a tail gas control method, device, equipment and medium for an extended-range vehicle, and relates to the technical field of automobile tail gas treatment and emission control, the idle speed duration of a vehicle engine is determined according to the temperature of the engine and the state of a front oxygen sensor, so that the idle speed duration of the engine better conforms to the current vehicle state, and the service life of the vehicle is prolonged. The accuracy and effectiveness of idle speed control are remarkably improved, and the exhaust emission level is further reduced. The method comprises the steps that the engine temperature and the front oxygen sensor state of a current vehicle are obtained; determining idle speed duration of a vehicle engine based on the engine temperature and the state of the front oxygen sensor; and the vehicle engine is controlled to enter a power generation working condition after running at the idle speed for the idle speed duration.

The invention discloses an automobile exhaust analysis method through automobile exhaust component monitoring, and relates to the technical field of data processing, and the method comprises the steps: constructing an exhaust component monitoring data set based on the operation state of an engine, carrying out the class uniformity analysis and data set expansion of the exhaust component monitoring data set, and obtaining a target data set; performing sample labeling on the target data set, and constructing a training data set; building a model framework, and performing model training convergence through the training data set to obtain an exhaust analysis model; on the basis of a preset treatment target, configuring tail gas detection equipment, and performing target detection; and inputting the engine monitoring parameters and the target detection result into the exhaust analysis model, and determining an exhaust recognition result. The technical problem that in the prior art, due to variability of automobile running states and complexity of emission data, the tail gas emission control effect is poor is solved, and the technical effects that through tail gas emission dynamic monitoring and engine control optimization, engine performance is improved, and tail gas emission is reduced are achieved.

The invention relates to the technical field of automobile tail gas treatment, in particular to a vehicle-mounted tail gas purification and emission control system which comprises a multi-stage purification module, a real-time data acquisition module, an intelligent control unit and a regeneration execution module which are sequentially connected in series. The data acquisition module acquires tail gas temperature, pressure, pollutant concentration and engine working condition parameters and transmits the parameters to the intelligent control unit; and the intelligent control unit outputs regulation and control signals to the multi-stage purification module and the regeneration execution module based on a preset control strategy according to the working condition data, so that cooperative control of low-temperature catalytic preheating, particulate trapping regeneration and selective catalytic reduction precise liquid spraying is realized. The system can dynamically adapt to different working conditions of the engine, improves the tail gas purification efficiency, reduces the fuel consumption in the regeneration process, reduces the influence of tail gas emission on the environment, and is suitable for various vehicle types such as gasoline cars and diesel cars.

The present invention discloses an automobile exhaust emission sampling device and a sampling method for low-carbon management of urban roads, belonging to the field of exhaust gas detection. An automobile exhaust emission sampling device for low-carbon management of urban roads according to the present invention comprises: a support column, and a gas collection box body for collecting exhaust gas is installed at the lower end of the support column; a smoke exhaust chimney for slow exhaust is installed above the exhaust pipeline; a first support frame and a second support frame are used for protecting the detection structure at the bottom in the middle of the road; an air inlet is arranged at the upper end of the sampling box body, and a dust-proof net is arranged inside the air inlet. The present invention solves the problem that in the prior art, the automobile exhaust gas detection device only samples the gas around the exhaust gas through the detection structure, and the accuracy of exhaust gas detection is generally average. By means of the support frame sensing the driving position of the vehicle, the air extraction device is turned on or off, and the exhaust gas is extracted specifically, so as to improve the accuracy of the sampled exhaust gas, detect the exhaust gas emitted corresponding to each vehicle, and improve the detection effect.

The invention relates to a calibration device of an automobile emission analysis system, and belongs to the technical field of automobile exhaust emission detection.The calibration device comprises a flexible air bag, a multi-channel gas divider, a gas circuit control module and a controller, a gas outlet of the multi-channel gas divider is connected with a gas inlet of the flexible air bag, and a gas outlet of the multi-channel gas divider is connected with a gas outlet of the flexible air bag; an air outlet of the flexible air bag is connected with the air path control module through a pipeline, and the flexible air bag is also connected with a sampling port of the discharge analyzer to be calibrated through a pipeline; zero gas and distance gas are mixed through a multi-channel gas divider to generate calibration gas with known concentration, the calibration gas is stored in a flexible gas bag, the pressure of the gas bag is adjusted through a gas path control module to simulate an actual sampling environment, and accurate calibration of the emission analyzer to be calibrated is completed in combination with temperature compensation and a nonlinear correction algorithm. According to the invention, efficient and accurate calibration of the automobile emission analysis system is realized, the calibration efficiency and accuracy are improved, the measurement error is effectively reduced, and emission test requirements under various working conditions are met.

The utility model belongs to the field of automobile exhaust detection, and particularly relates to a vehicle-mounted exhaust emission real-time monitoring device which comprises an exhaust pipe, a butt joint pipe, a first connecting ring, a sealing gasket, a first fixing bolt, a second connecting ring and the like. The exhaust pipe is a tail gas pipe of an automobile and serves as an installation carrier of the detection device, a butt joint pipe is installed at an exhaust port of the exhaust pipe in a butt joint mode, two first connecting rings are symmetrically arranged at a pipe opening of the butt joint end of the exhaust pipe, the first connecting rings are semicircular, and bolt through openings are formed in the upper side and the lower side of each first connecting ring. The sealing gasket is arranged between the exhaust pipe and the butt joint pipe, the sealing piece is arranged on the butt joint face of the first connecting ring and the second connecting ring, two defensive lines are formed, the sealing performance and the fastening performance of the connecting portion are greatly improved, the sensor module is directly communicated with the butt joint pipe through a pipeline, and the sealing performance of the butt joint pipe is greatly improved. It is ensured that the collected tail gas sample is undiluted or polluted real exhaust gas, and therefore the accuracy of the monitoring result is improved.

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 belongs to a vehicle fault diagnosis system. A controller analyzes vehicle data transmitted by a vehicle-mounted data acquisition module to evaluate the state of a vehicle, controls an external sensor to acquire data, integrates sensor data and OBD information, and cooperates with a wireless communication module to realize two-way transmission of vehicle fault diagnosis information and the Internet; the vehicle-mounted data acquisition module is connected with the controller and is used for acquiring the automobile driving state and fault diagnosis information and transmitting the information to the controller; the air quality sensor is connected with the controller and used for detecting the exhaust emission condition of the automobile; the ultrasonic sensor is connected with the controller and used for detecting the closing state of the vehicle window; and the temperature sensor is connected with the controller and used for detecting the temperature state of the power battery. The utility model solves the problem of the traditional interface, improves the efficiency of the system and the OBD interface, obtains multiple information of the vehicle, and is externally connected with the sensor for detection. The cloud platform facilitates data processing and storage, the mobile phone facilitates query and diagnosis, and user experience and safety are improved.

The invention provides an automobile portable emission testing system, belongs to the technical field of automobile exhaust testing, and solves the technical problems that an existing emission testing system is large in size, not portable, low in testing efficiency, poor in vehicle adaptability and the like. Comprising a mounting bearing frame, a wireless communication module, a cloud server, a system controller and an OBD adapter, the system controller and the OBD adapter are placed in a compartment, a plurality of folding supporting wheels are arranged on the lower side of the mounting bearing frame, a plurality of positioning locking sliding seats are arranged on the front side of the mounting bearing frame, trailer connecting pieces are arranged on the positioning locking sliding seats, and an environment monitoring mechanism is arranged on the mounting bearing frame. A plurality of auxiliary connecting pieces are arranged on the front side of the upper end of the mounting bearing frame, a tail gas detection module is arranged on the rear side of the upper end of the mounting bearing frame, a tail gas collection mechanism is arranged on the front side of the lower end of the mounting bearing frame, and a tail gas flow evaluation mechanism is arranged on the rear side of the lower end of the mounting bearing frame. The system adopts an integrated framework, is highly integrated and portable, is high in vehicle adaptability, and can stably and efficiently carry out emission test evaluation.

The utility model relates to the field of environment monitoring technology application, in particular to a portable pollution source emission on-line measurement device which comprises a tail gas sampling and pretreatment module, a formaldehyde and nitrous acid on-line analysis module, a conventional gas expansion module and a data acquisition and main control module, the tail gas sampling and pretreatment module is respectively connected with the formaldehyde and nitrous acid online analysis module and the conventional gas expansion module, the formaldehyde and nitrous acid online analysis module is connected with the data acquisition and main control module, and the conventional gas expansion module is connected with the data acquisition and main control module. The automobile exhaust emission flow temperature is monitored, formaldehyde and nitrous acid are measured through the formaldehyde and nitrous acid on-line analysis module, data recording is carried out through the conventional gas expansion module, and finally the data of formaldehyde and nitrous acid are stored and monitored through the data acquisition and main control module. Therefore, active components such as formaldehyde and nitrous acid discharged from the motor vehicle tail gas road can be measured.

The utility model provides an automobile tail pipe transition device for automobile exhaust emission testing and an automobile exhaust emission testing system, and belongs to the technical field of automobile exhaust detection. The automobile tail pipe transition device for the automobile exhaust emission test comprises a metal transition pipe, a first sealing rubber pipe and a second sealing rubber pipe, one end of the metal transition pipe is an air inlet end, and the other end is an exhaust end; the air inlet end is connected with one end of the first sealing rubber pipe; and the exhaust end is connected with one end of the second sealing rubber pipe. Compared with a traditional silica gel transition connecting pipe, the transition pipe made of the metal material has the advantages that the problems of volatilization, decomposition, bubbling, carbonization and the like at high temperature are solved, additional gas and particulate matter are prevented from entering an emission analyzer, and therefore the accuracy of automobile emission test results is remarkably improved.

The utility model belongs to tail gas emission test field discloses a kind of tail gas secondary combustion test devices, mainly for automobile tail gas emission test, with State environmental protection requirement of automobile is adjusted high, in order to meet the requirement of automobile tail gas emission to meet national emission standard, the utility model mainly through the experiment test equipment of simulating different flow tail gas and tail gas under different temperature influence on nitrogen oxides (NOx) after participating in engine secondary combustion.By simulating engine in different operating conditions inject different flow tail gas and different temperature tail gas participate in combustion after through instrument test emission tail gas nitrogen oxides (NOx) concentration, obtain the data of tail gas injection and engine operating condition, to obtain reference data for the design and optimization of engine tail gas secondary introduction engine combustion.

The present application relates to the field of tail gas CO processing, in particular to a mine underground automobile multi-stage slow-release type tail gas CO ozone oxidation method and system, the method comprising: obtaining real-time running state data of the transport automobile and real-time air flow data of the roadway to obtain a current working condition parameter set; predicting the tail gas CO emission intensity based on the parameter set to determine the theoretical total ozone demand; obtaining the predicted spatio-temporal distribution information of the transport automobile driving along the roadway, splitting the theoretical total ozone demand into multiple sub-release doses, and assigning each sub-release dose a release time node and a release spatial position; according to the corresponding release time node and spatial position, sequentially controlling the ozone release device to perform release, so that the ozone axially contacts and oxidizes the CO in the tail gas of the moving automobile along the roadway. The present application realizes the active matching of the ozone release rhythm and the spatio-temporal evolution law of the moving emission source, greatly improves the effective collision probability of ozone molecules and CO and the ozone utilization efficiency, and reduces the tail gas CO concentration in the roadway.

The present application discloses an automobile energy-saving, emission-reduction and efficiency-enhancing system, including an engine, a nozzle, a fuel pump, a graphene fuel filter, a fuel tank, a throttle, a graphene air filter, an intake module, an oxygen sensor, a newly added ECU unit and a liquid level sensor. The automobile energy-saving, emission-reduction and efficiency-enhancing system of the present application can receive the oxygen content signal output by the oxygen sensor through the newly added ECU unit without changing the existing common automobile engine structure and the original vehicle control system, and control the injection amount of the nozzle according to the oxygen content signal, and then control the air delivery amount of the throttle, so that the engine has an oil-gas ratio with the best fuel efficiency value, thereby not only greatly improving the fuel combustion efficiency, but also achieving the purpose of energy saving and environmental protection, and thus helping to reduce automobile exhaust emissions and improve the problem of climate warming year by year.

The utility model discloses an automobile tail gas detection device, which belongs to the technical field of automobile detection, and adopts the technical scheme that the automobile tail gas detection device comprises a tail gas analyzer. The probe is connected with the tail gas analyzer, the gas collecting hood is arranged on the periphery of the probe, the exhaust fan is communicated with the gas collecting hood through a gas pipe, and the tail gas treatment structure is arranged on the gas pipe; a positioning ring for mounting the probe is arranged on the inner wall of the small end of the gas-collecting hood, a lead outlet of the probe is formed in the gas-collecting hood, and a sealing ring is arranged at the joint of the gas-collecting hood and the lead outlet; a lifting support is arranged on the lower portion of the gas collecting hood, and the automobile exhaust pipe is located between the probe and the gas collecting hood. The device has the beneficial effects that the probe collects tail gas for analysis, and the gas collecting hood collects peripheral waste gas and purifies the waste gas through the tail gas treatment structure, so that indoor pollution is reduced; the height-adjustable lifting support can adapt to the positions of tail pipes of different vehicle types.

The present application relates to the technical field of smart city, and provides an analysis method for predicting urban pollution vehicle exhaust emission, comprising: calculating monitoring device attribution, obtaining monitoring data through the monitoring device to form a data set A; obtaining vehicle information data, setting pollution emission weight values of different vehicles to form a data set B; calculating total pollution emission weight values of all vehicles passing through each time interval of each district according to the data set A and the data set B to form a data set D; calculating pollution emission amounts corresponding to unit weight values according to annual pollution gas emission statistical data of each district and the data set D to form a data set E; predicting future traffic flow, and predicting future pollution emission values according to the predicted future traffic flow. The present application can predict future exhaust harmful gas emission amount in advance; based on the prediction result in the future, auxiliary decisions of environmental prevention and traffic management can be made in advance, and decision basis for smart city business is provided.

Exhaust aftertreatment method for a diesel-powered hybrid vehicle, in which - a control unit (90) of the diesel-powered hybrid vehicle by actuating components of an exhaust aftertreatment system (1) of the hybrid vehicle during a standstill of a diesel-powered internal combustion engine (170) of the hybrid vehicle, the exhaust aftertreatment system (1) for an increased NO x -turnover rate prepared, wherein the components of the exhaust aftertreatment system (1) are actuated with electrical recuperation energy provided by the electric motor (150) during braking of the hybrid vehicle, - the control unit (90) adjusts at least one operating parameter of the internal combustion engine (170) in such a way as to reduce soot emissions from the internal combustion engine (170) and NO x -Emission from the internal combustion engine (170) corresponding to the increased NO x -Sales rate is increased.

The application discloses a tail gas pollution monitoring system, which comprises a tail gas collecting module, a positioning module, a communication module, a data processing module, a calibration module, a database, a control module, a display module and a warning module. The tail gas pollution monitoring system can realize real-time dynamic monitoring of the tail gas of fuel automobile vehicles in a to-be-measured area. The size of a tail gas signal A and the size of a minimum tail gas signal L are compared. If the tail gas signal A is smaller than the minimum tail gas signal L, the tail gas signal A is regarded as an invalid tail gas signal A1, that is, data loss occurs. Then, the tail gas signal collected last time is taken as the lost data, so as to ensure the accuracy of the dynamic change air quality thermal map. A continuous invalid number N is set to distinguish between fuel automobile tail gas sensor failure and transmission interference. In order to more accurately judge whether the fuel automobile tail gas emission meets the national standard, a continuous abnormal number M is set, so that the tail gas pollution monitoring system is more practical and universal.

The utility model relates to the technical field of automobile detection, in particular to a tail gas collecting device for automobile detection. The tail gas collecting device for automobile detection comprises a sampling pipe and a filtering box, a sampling hose is installed between the sampling pipe and the filtering box, a sampling sleeve is arranged in the outer side direction of the sampling pipe, the particle filtering box is provided with an air outlet pipe, and the tail end of the air outlet pipe is provided with an inflation pipe and a soft rubber plug. The upper end of the inflation tube penetrates through the soft rubber plug to be communicated with the air outlet tube, and the lower end of the inflation tube is communicated with the collection bottle. According to the tail gas collecting device for automobile detection, the sampling pipe wraps the automobile exhaust pipe tightly, so that tail gas exhausted by an automobile passes through the filter box and finally enters the collecting bottle under the condition that the tail gas is not sprayed to detection personnel, and the detection personnel can rapidly collect the tail gas of the automobile.

The invention relates to the technical field of environment monitoring, in particular to an intelligent tail gas pollution monitoring system which comprises an infrared monitoring module, a tail gas spectrum module, a central processing module, a weather acquisition unit, a vehicle acquisition unit, a network transmission unit, a large-screen display unit and an environment monitoring platform. Whether a vehicle enters or not is judged through the first infrared light sensor and the second infrared light sensor, after the vehicle enters, the second infrared light sensor starts the tail gas spectrum module, the spectrum detection module detects tail gas left by the vehicle in the area between the first infrared light sensor and the second infrared light sensor, and automobile tail gas detection data are sent to the central processing module; the central processing module carries out comprehensive calculation on environment parameters collected by the meteorological monitoring unit, a calculation result is sent to the environment detection platform through the network transmission module, the environment detection platform, namely an owner of the system, makes a decision, an accurate detection result can be presented, and a decision-making person makes a scientific and correct decision.