CN106769104B - Fuel system carbon tank desorption calibration data acquisition system - Google Patents
Fuel system carbon tank desorption calibration data acquisition system Download PDFInfo
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- CN106769104B CN106769104B CN201710082498.4A CN201710082498A CN106769104B CN 106769104 B CN106769104 B CN 106769104B CN 201710082498 A CN201710082498 A CN 201710082498A CN 106769104 B CN106769104 B CN 106769104B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
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Abstract
The utility model provides a fuel system carbon tank desorption calibration data acquisition system, is including the main control terminal that is used for acquireing fuel system data, main control terminal pass through binary channels CAN card and connect the OBDII communication cable that is used for gathering vehicle operation data respectively and be used for gathering the measuring module of vehicle oil tank data, OBDII communication cable connects vehicle OBD data acquisition device's interface, measuring module connects the gas flowmeter that is used for connecting the carbon tank and gathers vehicle gas data and the oil tank data acquisition sensor that is used for gathering fuel tank data respectively. The invention provides a fuel system carbon tank desorption calibration data acquisition system, which is used for completing data acquisition of the gas flow of the air port of the carbon tank of the fuel system of the automobile, the temperature of the outer surface of the oil tank, the temperature of the oil gas in the oil tank, the pressure of the oil gas in the oil tank and the OBD speed in the whole automobile drum operation working condition process, and has simple structure and easy realization. The acquired data is very concise and visual, and the actual level of desorption calibration of the carbon tank is reflected.
Description
Technical Field
The present invention relates to a data acquisition system. In particular to a fuel system carbon tank desorption calibration data acquisition system for acquiring the carbon tank atmospheric port desorption flow and the OBD speed of a light gasoline vehicle in the process of simulating the road operation working condition by a laboratory rotary drum.
Background
With the release of six-stage emission standards of the national light vehicle, the requirements of an IV type evaporation emission test and an VII type oiling emission test are increased in CN 6. In order to cope with the control requirements of six-stage evaporation emission and oiling emission, a main engine factory needs to develop very critical calibration research and development work on the basis of upgrading a traditional fuel system into a design scheme with an ORVR function, namely, desorption calibration is carried out on a carbon tank of the vehicle fuel system according to the requirement of the legal working condition, so that the carbon tank of the vehicle fuel system is fully desorbed to obtain the working capacity meeting the requirement. The desorption calibration level of the vehicle carbon tank directly relates to whether the vehicle can meet the requirements of the six-stage evaporative emission and refueling emission test regulation limit values. Therefore, the test method for the desorption calibration of the carbon tank of the fuel system provides an achievable and operable method for the desorption calibration research and development work of the pretreatment operation working condition of the whole vehicle on the rotary drum.
The gas flow of the carbon tank atmospheric port is the most intuitive data factor of carbon tank desorption condition in the whole vehicle operation working condition process, and simultaneously, the vehicle speed of the vehicle OBD, the outer surface temperature of the oil tank, the oil gas temperature in the oil tank and the internal pressure of the oil tank are obtained, and the real-time carbon tank desorption condition of the fuel system of the whole vehicle in the drum operation working condition can be obtained by carrying out association and integration on the data. The existing carbon tank desorption calibration of the autonomous vehicle only has the calculated calibration value of an engineer, can only be used for reference, and has no actual data passing the sensor test. Because the evaporative emission control requirements are relatively low before the sixth country, the carbon tank desorption requirements on the vehicle fuel system are not high, and special attention is not required to be paid to the carbon tank desorption calibration condition of the fuel system, the host factory does not conduct intensive research in this aspect. However, along with the formulation and release of six-stage regulations, a host factory is urgent to master the desorption calibration conditions of the carbon tanks of the five vehicles in the prior art, and is also searching for carbon tank desorption calibration data of the vehicle type meeting the evaporative emission requirement in foreign countries, and finally, in the initial stage of research and development and trial production of engineering sample vehicles meeting the six-stage regulations, the carbon tank desorption calibration data of the engineering sample vehicles need to be tested to confirm whether the carbon tank desorption calibration meets the research and development targets. In addition, in the aspect of regulation authentication, a host factory and a detection mechanism are required to be specific to the vehicle type to be detected, and desorption calibration data of the carbon tank of the fuel system are obtained in the process of developing IV type and VII type tests.
Based on the above considerations, a scientific, reasonable, operable and real data situation characterization test method is more urgent, but the test requirement is unprecedented, and no standardized and unified operation method is formed, so that a data acquisition system for desorption calibration of a carbon tank of a fuel system is required to meet the vehicle test requirement.
Disclosure of Invention
The invention aims to solve the technical problem of providing a fuel system carbon tank desorption calibration data acquisition system for calculating the fuel system carbon tank desorption calibration level of a vehicle in the legal test pretreatment process.
The technical scheme adopted by the invention is as follows: the utility model provides a fuel system carbon tank desorption calibration data acquisition system, is including the main control terminal that is used for acquireing fuel system data, main control terminal pass through binary channels CAN card and connect the OBDII communication cable that is used for gathering vehicle operation data respectively and be used for gathering the measuring module of vehicle oil tank data, OBDII communication cable connects vehicle OBD data acquisition device's interface, measuring module connects the gas flowmeter that is used for connecting the carbon tank and gathers vehicle gas data and the oil tank data acquisition sensor that is used for gathering fuel tank data respectively.
The main control terminal obtains the data of the speed, the engine rotating speed and the throttle opening of the vehicle from the OBD data acquisition device through the double-channel CAN card and the OBDII communication cable.
The gas flowmeter is connected with the atmospheric port of the carbon tank and is used for acquiring the gas flow at the atmospheric port when the vehicle runs.
The gas flow at the atmospheric port of the carbon tank is obtained by connecting the desorption port of the carbon tank with an engine intake manifold and connecting the adsorption port of the carbon tank with a fuel tank.
The fuel tank data acquisition sensor comprises a fuel tank outer surface temperature sensor arranged on the outer surface of the fuel tank, a fuel tank inner temperature sensor arranged in the fuel tank and a fuel tank inner pressure sensor arranged in the fuel tank.
The power input end of the measuring module is connected with a vehicle-mounted cigar lighter power supply through a power cable.
The invention provides a fuel system carbon tank desorption calibration data acquisition system, which is used for completing data acquisition of the gas flow of the air port of the carbon tank of the fuel system of the automobile, the temperature of the outer surface of the oil tank, the temperature of the oil gas in the oil tank, the pressure of the oil gas in the oil tank and the OBD speed in the whole automobile drum operation working condition process, and has simple structure and easy realization. The carbon tank desorption calibration data acquisition system for the fuel system acquires the gas flow of the atmospheric port of the carbon tank of the fuel system, the temperature of the outer surface of the fuel tank, the temperature of the oil gas in the fuel tank, the pressure in the fuel tank and the OBD speed of the whole vehicle in the whole vehicle drum operation process, and is used for calculating the carbon tank desorption calibration level in the whole pretreatment working condition process. The acquired data is very concise and visual, the actual level of desorption calibration of the carbon tank is reflected, and the carbon tank is finally used for relevant research and development test work of a host factory and a detection mechanism.
Drawings
FIG. 1 is a schematic block diagram of a fuel system canister desorption calibration data acquisition system according to the present invention;
fig. 2 is a schematic diagram of a specific structure of a carbon canister desorption calibration data acquisition system of the fuel system of the present invention.
In the drawing the view of the figure,
1: master terminal 2: dual-channel CAN card
3: OBDII communication cable 4: measuring module
5: power cable 6: vehicle-mounted cigar lighter power supply
7: vehicle OBD data acquisition device 71: vehicle speed
72: engine speed 73: throttle opening
8: gas flowmeter 9: oil tank data acquisition sensor
91: tank outside surface temperature sensor 92: temperature sensor in oil tank
93: the in-tank pressure sensor 10: carbon pot
101: desorption port 102: adsorption port
11: engine intake manifold 12: fuel tank
13: fuel tank outer surface 14: inside of fuel tank
Detailed Description
The following describes the fuel system canister desorption calibration data acquisition system of the present invention in detail with reference to the examples and the accompanying drawings.
As shown in fig. 1 and 2, the fuel system carbon canister desorption calibration data acquisition system of the invention comprises a main control terminal 1 for acquiring fuel system data, wherein the main control terminal 1 can adopt a computer and the like. The main control terminal 1 is respectively connected with the OBDII communication cable 3 for collecting vehicle operation data and the measurement module 4 for collecting vehicle oil tank data through the double-channel CAN card 2, and the power input end of the measurement module 4 is connected with the vehicle-mounted cigar lighter power supply 6 through the power cable 5. The OBDII communication cable 3 is connected with an interface of the vehicle OBD data acquisition device 7, and the measurement module 4 is respectively connected with a gas flowmeter 8 for connecting a carbon tank 10 to acquire vehicle gas data and a fuel tank data acquisition sensor 9 for acquiring fuel tank 12 data.
The main control terminal 1 acquires data of the speed 71, the engine rotating speed 72 and the throttle opening 73 of the vehicle from the OBD data acquisition device 7 in real time through the double-channel CAN card 2 and the OBDII communication cable 3.
The gas flowmeter 8 is connected with the atmospheric port 103 of the carbon tank 10 and is used for acquiring the current gas flow at the atmospheric port 103 when the vehicle is running. The gas flow at the atmospheric port 103 of the canister 10 is obtained by connecting the engine intake manifold 11 through the desorption port 101 of the canister 10 and the fuel tank 12 through the adsorption port 102 of the canister 10, respectively.
The fuel tank data acquisition sensor 9 includes a fuel tank outer surface temperature sensor 91 provided on the fuel tank outer surface 13, a fuel tank inner temperature sensor 92 provided in the fuel tank inner portion 14, and a fuel tank inner pressure sensor 93 provided in the fuel tank inner portion 14. For example, the tank outer surface temperature sensor 91 collects the temperature of the tank outer surface 13 using a K-type patch thermocouple, and the tank inner temperature sensor 92 collects the temperature of the tank inner 14 using a K-type sheathed thermocouple.
According to the carbon tank desorption calibration data acquisition system of the fuel system, when the whole vehicle is in a working condition of rotary drum operation regulations, gas flow data at an air port of the carbon tank, vehicle OBD interface speed and engine rotation speed data, and temperature and pressure data on the inner surface and the outer surface of a fuel tank are acquired, and the data are integrated, analyzed and calculated, so that a unified, standard and portable data acquisition system for acquiring the desorption calibration level of the carbon tank is finally formed. The invention solves the problem of how to acquire the real-time desorption calibration level of the carbon tank of the fuel system when the actual vehicle runs, provides a testing means and a basic data support for development work of a host factory and a detection and mechanism, and ensures the development target of the host factory and the test verification work after the development of the subsequent vehicle type is completed.
The specific application of the carbon tank desorption calibration data acquisition system of the fuel system is as follows:
first, the carbon tank desorption calibration data acquisition system of the fuel system is well connected as shown in fig. 2. Connecting the main control terminal with the dual-channel CAN card; connecting a first channel of the double-channel CAN card with an interface of a vehicle OBD data acquisition device by using an OBDII communication cable; connecting a second channel of the dual-channel CAN card with the measurement module; connecting the measurement module to a vehicle-mounted cigar lighter power supply by using a power cable; connecting the gas flowmeter with the measuring module; connecting a gas flowmeter with an atmospheric port of the carbon tank by using a pipeline; the fuel tank outer surface temperature sensor, the fuel tank inner temperature sensor and the fuel tank inner pressure sensor are well connected with the measuring module.
Secondly, after the connection of the carbon tank desorption calibration data acquisition system of the fuel system is finished. Moving the vehicle to the test drum and fixedly installing a driver assistance system; turning a vehicle starting key to a power-on state; turning on a main control terminal power supply and starting a control program; connecting a vehicle-mounted cigar lighter power supply for supplying power to the measuring module; after the main control terminal program is started, the main control terminal program is communicated with the vehicle OBD data acquisition device and the measurement module, and relevant test parameters are configured after the main control terminal program is successful; when the rotary drum dynamometer and the driver auxiliary system start to operate the working condition curve, starting the vehicle engine, and simultaneously starting the main control terminal to measure and record data; after a preset operation working condition, the main control terminal acquires actual speed, engine rotating speed, throttle valve and other data parameters in the whole vehicle working condition process from the vehicle OBD data acquisition device, acquires gas flow data at the atmospheric port of the carbon tank in the whole working condition process from the gas flowmeter, and acquires oil tank outer wall pressure, oil gas temperature in the oil tank and pressure data in the oil tank from three sensors of the fuel tank. And finally, the master control terminal collects and analyzes all the data. The data can be used for researching the desorption calibration actual level condition of the carbon tank of the fuel system in the running process of the vehicle under the preset working condition.
The specific model of each device used in the examples of the present invention is shown in table 1.
TABLE 1
Claims (4)
1. The system is characterized in that the main control terminal (1) is respectively connected with an OBDII communication cable (3) for acquiring vehicle operation data and a measurement module (4) for acquiring vehicle oil tank data through a double-channel CAN card (2), the OBDII communication cable (3) is connected with an interface of a vehicle OBD data acquisition device (7), and the measurement module (4) is respectively connected with a gas flowmeter (8) for connecting a carbon tank (10) to acquire vehicle gas data and an oil tank data acquisition sensor (9) for acquiring oil tank (12) data; the main control terminal (1) obtains data of the speed, the engine speed and the throttle opening of the vehicle from the OBD data acquisition device (7) through the double-channel CAN card (2) and the OBDII communication cable (3); the gas flowmeter (8) is connected with an atmospheric port (103) of the carbon tank (10) and is used for acquiring the gas flow at the atmospheric port (103) during the running of the vehicle.
2. The fuel system carbon canister desorption calibration data collection system according to claim 1, wherein the gas flow at the atmospheric port (103) of the carbon canister (10) is obtained by connecting an engine intake manifold (11) through a desorption port (101) of the carbon canister (10) and a fuel tank (12) through an adsorption port (102) of the carbon canister (10), respectively.
3. The fuel system carbon canister desorption calibration data collection system according to claim 1, wherein the fuel tank data collection sensor (9) comprises a fuel tank outer surface temperature sensor (91) arranged on a fuel tank outer surface (13), an in-tank temperature sensor (92) arranged in a fuel tank inner portion (14), and an in-tank pressure sensor (93) arranged in the fuel tank inner portion (14).
4. The fuel system carbon canister desorption calibration data acquisition system according to claim 1, wherein the power input end of the measurement module (4) is connected with a vehicle-mounted cigar lighter power supply (6) through a power cable (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710082498.4A CN106769104B (en) | 2017-02-15 | 2017-02-15 | Fuel system carbon tank desorption calibration data acquisition system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710082498.4A CN106769104B (en) | 2017-02-15 | 2017-02-15 | Fuel system carbon tank desorption calibration data acquisition system |
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| CN106769104A CN106769104A (en) | 2017-05-31 |
| CN106769104B true CN106769104B (en) | 2023-10-20 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109209684A (en) * | 2018-08-01 | 2019-01-15 | 上海机动车检测认证技术研究中心有限公司 | A kind of canister desorption detection device |
| CN109269588B (en) * | 2018-10-17 | 2021-01-05 | 奇瑞汽车股份有限公司 | Carbon canister desorption volume measuring equipment and measuring method |
| CN110793785A (en) * | 2019-11-21 | 2020-02-14 | 中国汽车技术研究中心有限公司 | Test device for calibrating desorption control strategy of automobile activated carbon canister |
| CN113203558B (en) * | 2021-04-30 | 2023-03-31 | 中汽研汽车检验中心（天津）有限公司 | Device and method for diagnosing related faults of carbon tank electromagnetic valve |
| CN114199754A (en) * | 2021-11-17 | 2022-03-18 | 柳州舜泽尔汽车零部件有限公司 | Method for detecting cleanliness of national six-carbon canister of automobile |
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