CN205374213U - Car carbon tank resistance detection device that ventilates - Google Patents
Car carbon tank resistance detection device that ventilates Download PDFInfo
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- CN205374213U CN205374213U CN201520930962.7U CN201520930962U CN205374213U CN 205374213 U CN205374213 U CN 205374213U CN 201520930962 U CN201520930962 U CN 201520930962U CN 205374213 U CN205374213 U CN 205374213U
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Abstract
The utility model provides a car carbon tank resistance detection device that ventilates, includes air supply, current amount control means I, current amount control means II, vacuum pump, ressure measurement unit and central control unit, absorption is aerifyd through current amount control means I and electromagnetic on -off valve to the carbon tank through the pipeline to the air supply, desorption antilinear electromagnetic on -off valve and the current amount control means II and the vacuum pump intercommunication of carbon tank, the blow vent of carbon tank leads to the atmosphere through electromagnetic on -off valve, current amount control means, ressure measurement unit and each electromagnetic on -off valve respectively with central control unit circuit connection to detect out the pressure value of carbon tank at absorption and each pressure sensor of desorption in -process under central control unit's control. This detection device can be under central control unit control, the automatic loop detection of resistance that realizes ventilating, and detection efficiency and precision are high, but detect aero, accuracy, the stable and further analysis of derived data confession, detection method is easy and simple to handle.
Description
Technical field
This utility model relates to the detecting device of a kind of automobile component, particularly a kind of automobile canister aeration resistance detecting device.
Background technology
Canister assembly is the major part that automotive evaporative emission controls, its effect is that absorption from the gasoline vapor of fuel tank and temporarily stores, under specific operating mode, the ECU of automobile controls canister desorption electromagnetic valve and opens, the negative pressure of inlet manifold causes that the fresh air in the external world flows through canister, is burnt to electromotor by the gasoline vapor desorption that activated carbon adsorbs.
The aeration resistance (pressure drop) of automobile canister is one of important special characteristics of canister, according to country discharge vaporization industry standard HJ/T390-2007, aeration resistance refers generally to absorption resistance, namely the steam of fuel tank internal is when volatilization, tank internal pressure increases, at this moment air pressure is discharged by canister, by the Hydrocarbon in activated carbon adsorption air-flow, and is discharged by unnecessary pressure (air).If canister vent resistance is excessive, air pressure can not be effectively discharged out, and can close a bigger air pressure at fuel tank internal.And when automobile fuel filler, fuel door is opened, fuel tank steam is discharged by filler, causes certain pollution and waste.
In addition, fuel tank is an airtight state in vehicle traveling process, during along with running car, gasoline is exported continuously by oil pump, fuel tank requires over canister to carry out maintaining normal air pressure, otherwise can form a bigger negative pressure in fuel tank, so fuel tank can be caused to be inhaled flat, refuel the fault such as unable, if the aeration resistance of canister is excessive, fuel tank just cannot maintain normal air pressure by canister.
The aeration resistance of canister is usually embodied by fuel tank negative pressure under the adsorptive pressure drop-out value of canister, desorption pressure drop-out value, desorption flow and fuel tank engine load drop-out value four indices.
There is the problem that not yet there is special detecting device at present, mostly adopt the mode of manual measurement to detect, troublesome poeration, efficiency are low, and accuracy of detection is difficult to ensure that.
Summary of the invention
The technical problems to be solved in the utility model is: the requirement according to Environment Protect in China industry standard (standard No.: HJ/T390-2007); there is provided the automobile canister aeration resistance detecting device that a kind of efficiency is high, can ensure that accuracy of detection, to overcome the above-mentioned deficiency existing for prior art.
The technical solution adopted in the utility model is: a kind of automobile canister aeration resistance detecting device, including source of the gas, flow controlling unit I, flow controlling unit II, vacuum pump, the first electromagnetism on-off valve, the second electromagnetism on-off valve, the 3rd electromagnetism on-off valve, the 4th electromagnetism on-off valve, for carrying the monitor station of canister to be measured, pressure measurement cell and central control unit；
Described pressure measurement cell includes pressure transducer I, pressure transducer II, pressure transducer III；
Described source of the gas is connected by the input of pipeline with flow controlling unit I, the outfan of flow controlling unit I connects with the adsorption orifice of the canister being arranged on monitor station through the first electromagnetism on-off valve and the second electromagnetism on-off valve, the desorption mouth of canister connects with flow controlling unit II and vacuum pump through the 3rd electromagnetism on-off valve, the blow vent of canister is through the logical air of the 4th electromagnetism on-off valve, and another input of described first electromagnetism on-off valve leads to air；
The pressure transducer I of Bonding pressure measuring unit on the pipeline of canister adsorption orifice, the pressure transducer II of Bonding pressure measuring unit on the pipeline of canister desorption mouth, the pressure transducer III of Bonding pressure measuring unit on the pipeline of canister vent mouth；
Described flow controlling unit I, flow controlling unit II, pressure transducer I, pressure transducer II, pressure transducer the III, first electromagnetism on-off valve, the second electromagnetism on-off valve, the 3rd electromagnetism on-off valve and the 4th electromagnetism on-off valve are connected with central control unit circuit respectively；
Described pressure transducer I is for measuring the force value at the adsorption orifice place of canister and the data obtained being transmitted to central control unit；Described pressure transducer II is for measuring the force value at the desorption mouth place of canister and the data obtained being transmitted to central control unit；Described pressure transducer III is for measuring the force value at the blow vent place of canister and the data obtained being transmitted to central control unit；
Described flow controlling unit I is for monitoring flow and the speed of source of the gas, and the data obtained is transmitted to central control unit, controls flow and the speed of source of the gas under the control of central control unit；Described flow controlling unit II is for monitoring the flow of negative pressure produced by vacuum pump, and the data obtained is transmitted to central control unit, controls the flow of the negative pressure of vacuum pump under the control of central control unit；
Described first electromagnetism on-off valve, the second electromagnetism on-off valve, the 3rd electromagnetism on-off valve, the 4th electromagnetism on-off valve cut off under the control of central control unit respectively or open place pipeline；
Described source of the gas is compressed air source.
Its further technical scheme is: described flow controlling unit I is identical with flow controlling unit II structure, including automatically controlled flow valve and flow transducer.
Further: the pipeline of described flow controlling unit I front end is connected to filter and pressure-regulating valve；The pipeline of described vacuum pump front end it is connected to for buffer gas flow and reduces the buffer unit impacted.
Described flow transducer is low discharge turbine sensor, and inside nominal diameter is Φ 15mm, and precision is 3%FS, and range is 3000L/H；Described pressure transducer I, pressure transducer II and pressure transducer III are strain-type precision pressure sensor, precision 0.5 grade, range 1000mbar.
Owing to adopting technique scheme, the one automobile canister aeration resistance detecting device of this utility model has the advantages that
1. the one automobile canister aeration resistance detecting device of this utility model includes flow controlling unit, pressure measurement cell and central control unit, can under central control unit control, realize the detection of aeration resistance four indices Full-automatic circulation, as long as after the canister needing detection is connected with equipment, unlatching equipment, can obtain related test results recordable, preservation result after the standard time, drawing correlation curve, accuracy of detection is high；
2. the one automobile canister aeration resistance detecting device of this utility model is provided with flow controlling unit and pressure measurement cell, (simulation car load practical situation) can be set in strict accordance with country's discharge vaporization standard and detect the flow of pressure gas source, it is ensured that testing result accurately and stable；
3. owing to being provided with buffer unit, available buffer air-flow, reduces the air-flow impact to vacuum pump；
4. the one automobile canister aeration resistance detecting device of this utility model is easy and simple to handle, and detection efficiency is high, and testing result is directly perceived and can to derive data for further analysis.
Below, in conjunction with accompanying drawing, the technical characteristic of a kind of automobile canister aeration resistance detecting device of this utility model is further described.
Accompanying drawing explanation
Fig. 1 is the one automobile canister aeration resistance detecting device pipeline of this utility model, circuit connection diagram；
Fig. 2 is the one automobile canister aeration resistance detecting device control principle block diagram of this utility model；
In figure
01-central control unit, 1-source of the gas, 2-pressure-regulating valve, 3-flow controlling unit I, 31-automatically controlled flow valve, 32-flow transducer, 4-flow controlling unit II, 41-automatically controlled flow valve, 42-flow transducer, 5-filter, the 6-the first electromagnetism on-off valve, 7-pressure transducer I, 8-the second electromagnetism on-off valve, 9-the three electromagnetism on-off valve, 10-pressure transducer II, the 11-the four electromagnetism on-off valve, 12-pressure transducer III, 13-vacuum pump, 14-monitor station, 15-buffer unit.
Detailed description of the invention
Embodiment
A kind of automobile canister aeration resistance detecting device, including source of the gas 1, flow controlling unit I 3, flow controlling unit II 4, vacuum pump the 13, first electromagnetism on-off valve the 6, second electromagnetism on-off valve the 8, the 3rd electromagnetism on-off valve the 9, the 4th electromagnetism on-off valve 11, pressure measurement cell, for carrying monitor station 14 and the central control unit 01 of canister to be measured；
Described pressure measurement cell includes pressure transducer I 7, pressure transducer II 10, pressure transducer III 12；
Described source of the gas 1 is connected by the input of pipeline with flow controlling unit I 3, the outfan of flow controlling unit I 3 connects with the adsorption orifice of the canister being arranged on monitor station with the second electromagnetism on-off valve 8 through the first electromagnetism on-off valve 6, the desorption mouth of canister connects with flow controlling unit II 4 and vacuum pump 13 through the 3rd electromagnetism on-off valve 9, the blow vent of canister leads to air through the 4th electromagnetism on-off valve 11, and another input of described first electromagnetism on-off valve 6 leads to air；
The pressure transducer I 7 of Bonding pressure measuring unit on the pipeline of canister adsorption orifice, the pressure transducer II 10 of Bonding pressure measuring unit on the pipeline of canister desorption mouth, the pressure transducer III 12 of Bonding pressure measuring unit on the pipeline of canister vent mouth；
Described flow controlling unit I 3, flow controlling unit II 4, pressure transducer I 7, pressure transducer II 10, pressure transducer the III 12, first electromagnetism on-off valve the 6, second electromagnetism on-off valve the 8, the 3rd electromagnetism on-off valve 9 and the 4th electromagnetism on-off valve 11 are connected with central control unit 01 circuit respectively；
Described pressure transducer I 7 is for measuring the force value at the adsorption orifice place of canister and the data of acquisition being transmitted to central control unit 01；Described pressure transducer II 10 is for measuring the force value at the desorption mouth place of canister and the data of acquisition being transmitted to central control unit 01；Described pressure transducer III 12 is for measuring the force value at the blow vent place of canister and the data of acquisition being transmitted to central control unit 01；
Described flow controlling unit I 3 is for monitoring under the control of central control unit and the flow and the speed that control source of the gas, and the data of acquisition is transmitted to central control unit 01；Described flow controlling unit II 4 is for monitoring under the control of central control unit 01 and controls the flow of negative pressure produced by vacuum pump 13, and the data of acquisition is transmitted to central control unit 01；
Described first electromagnetism on-off valve the 6, second electromagnetism on-off valve the 8, the 3rd electromagnetism on-off valve the 9, the 4th electromagnetism on-off valve 11 cuts off under the control of central control unit 01 respectively or opens place pipeline；
Described flow controlling unit I 3 is identical with flow controlling unit II 4 structure, and including automatically controlled flow valve and flow transducer, described flow transducer adopts low discharge turbine sensor, inside nominal diameter Ф 15mm, precision 3%FS, range 3000L/H；Pressure transducer adopts strain-type precision pressure sensor, precision 0.5 grade, range 1000mbar.
The pipeline of described flow controlling unit I 3 front end is connected to filter 5 and pressure-regulating valve 2；The pipeline of described vacuum pump 13 front end it is connected to for buffer gas flow and reduces the buffer unit impacted.
The method of above-mentioned automobile canister aeration resistance detecting device detection, comprises the steps:
A. set the gas source and flow amount meeting testing requirement and velocity amplitude with the flow value of negative pressure of vacuum, be stored in central control unit 01；
B. on monitor station 14, dispose canister to be detected, and on request its adsorption orifice, desorption mouth and blow vent are connected with the pipeline of detecting device；
C. adsorptive pressure decline detection is carried out:
A. close the 3rd electromagnetism on-off valve 9, the source of the gas 1 of opening detecting device, by regulating pressure-regulating valve 2, obtain the test source of the gas of steady pressure；
B. the first electromagnetism on-off valve 6 and the second electromagnetism on-off valve 8 is connected, 4th electromagnetism on-off valve 11 blow vent connects air, source of the gas is through flow controlling unit I 3, first electromagnetism on-off valve 6 and the second electromagnetism on-off valve 8 enter canister, central control unit 01 reads the force value at the value of pressure transducer I 7, i.e. canister adsorption orifice place, reads the force value at the value of pressure transducer III 12, i.e. canister vent mouth place；
C. the force value of adsorption orifice Yu blow vent place is subtracted each other and is obtained adsorptive pressure drop-out value by central control unit 01, the point that the adsorptive pressure drop-out value of different flow describes correspondence on figure is linked to be curve, adsorptive pressure decline curve figure can be obtained, data record is preserved；
D. fuel tank detection of negative pressure under desorption pressure decline detection and desorption flow is carried out:
A. the second electromagnetism on-off valve 8 is closed, open the 3rd electromagnetism on-off valve 9 and vacuum pump 13, negative pressure and the flow of setting are provided under the control of flow controlling unit II 4,4th electromagnetism on-off valve 11 blow vent connects air, air air is entered canister through the blow vent of the 4th electromagnetism on-off valve 11 and canister by the negative pressure that vacuum pump produces, from the desorption mouth of canister through the 3rd electromagnetism on-off valve 9 and flow controlling unit II 4 sucking-off；
B. central control unit 01 reads the force value at the value of pressure transducer II 10, i.e. canister desorption mouth place, read the force value at the value of pressure transducer III 12, i.e. canister vent mouth place, read the value of pressure transducer I 7, be under desorption flow the negative pressure of fuel tank；
C. the force value of desorption mouth Yu blow vent place is subtracted each other and is obtained desorption pressure drop-out value by central control unit 01, the point that the desorption pressure drop-out value of different flow describes correspondence on figure is linked to be curve, desorption pressure decline curve figure can be obtained, data record is preserved；
D. central control unit 01 negative pressure value of different flow is described on figure correspondence point be linked to be curve, the negative pressure curve chart of fuel tank under desorption flow can be obtained, by data record preserve；
E. the decline detection of fuel tank engine load is carried out:
A. the first electromagnetism on-off valve 6 connects air, opening the second electromagnetism on-off valve 8 makes adsorption orifice connect air, close the 4th electromagnetism on-off valve 11, open the 3rd electromagnetism on-off valve 9 and vacuum pump 13, negative pressure and the flow of setting are provided under the control of flow controlling unit II 4, air air is entered canister through the adsorption orifice of the second electromagnetism on-off valve 8 and canister by the negative pressure that vacuum pump produces, from the desorption mouth of canister through the 3rd electromagnetism on-off valve 9 and flow controlling unit II 4 sucking-off；
B. central control unit 01 reads pressure transducer I 7 and the value of pressure transducer II 10, it is the force value of adsorption orifice and desorption mouth place, two force value are subtracted each other and obtains fuel tank engine load pressure drop, the point that the pressure drop of different flow describes correspondence on figure is linked to be curve, fuel tank engine load pressure decline curves figure can be obtained, data record is preserved.
Claims (4)
1. an automobile canister aeration resistance detecting device, it is characterised in that: include source of the gas (1), flow controlling unit I (3), flow controlling unit II (4), vacuum pump (13), the first electromagnetism on-off valve (6), the second electromagnetism on-off valve (8), the 3rd electromagnetism on-off valve (9), the 4th electromagnetism on-off valve (11), be used for carrying the monitor station (14) of canister to be measured, pressure measurement cell and central control unit (01)；
Described pressure measurement cell includes pressure transducer I (7), pressure transducer II (10) and pressure transducer III (12)；
Described source of the gas (1) is connected by the input of pipeline with flow controlling unit I (3), the outfan of flow controlling unit I (3) connects with the adsorption orifice of the canister being arranged on monitor station with the second electromagnetism on-off valve (8) through the first electromagnetism on-off valve (6), the desorption mouth of canister connects with flow controlling unit II (4) and vacuum pump (13) through the 3rd electromagnetism on-off valve (9), the blow vent of canister is through the logical air of the 4th electromagnetism on-off valve (11), and another input of described first electromagnetism on-off valve (6) leads to air；
The pressure transducer I (7) of Bonding pressure measuring unit on the pipeline of canister adsorption orifice, the pressure transducer II (10) of Bonding pressure measuring unit on the pipeline of canister desorption mouth, the pressure transducer III (12) of Bonding pressure measuring unit on the pipeline of canister vent mouth；
Described flow controlling unit I (3), flow controlling unit II (4), pressure transducer I (7), pressure transducer II (10), pressure transducer the III (12), first electromagnetism on-off valve (6), the second electromagnetism on-off valve (8), the 3rd electromagnetism on-off valve (9) and the 4th electromagnetism on-off valve (11) are connected with central control unit (01) circuit respectively；
Described pressure transducer I (7) is for measuring the force value at canister adsorption orifice place and the data obtained being transmitted to central control unit (01)；Described pressure transducer II (10) is for measuring the force value at canister desorption mouth place and the data obtained being transmitted to central control unit (01)；Described pressure transducer III (12) is for measuring the force value at canister vent mouth place and the data obtained being transmitted to central control unit (01)；
Described flow controlling unit I (3) is for monitoring under the control of central control unit and the flow and the speed that control source of the gas, and the data obtained is transmitted to central control unit (01)；Described flow controlling unit II (4) is for monitoring under the control of central control unit (01) and controls the flow of negative pressure produced by vacuum pump (13), and the data obtained is transmitted to central control unit (01)；
Described first electromagnetism on-off valve (6), the second electromagnetism on-off valve (8), the 3rd electromagnetism on-off valve (9), the 4th electromagnetism on-off valve (11) cut off under the control of central control unit (01) respectively or open place pipeline；
Described source of the gas is compressed air source.
2. a kind of automobile canister aeration resistance detecting device according to claim 1, it is characterised in that: described flow controlling unit I (3) is identical with flow controlling unit II (4) structure, including automatically controlled flow valve and flow transducer.
3. a kind of automobile canister aeration resistance detecting device according to claim 1 and 2, it is characterised in that: the pipeline of described flow controlling unit I (3) front end is connected to filter (5) and pressure-regulating valve (2)；The pipeline of described vacuum pump (13) front end it is connected to for buffer gas flow and reduces the buffer unit (15) impacted.
4. a kind of automobile canister aeration resistance detecting device according to claim 2, it is characterised in that: described flow transducer is low discharge turbine sensor, and inside nominal diameter is Φ 15mm, and precision is 3%FS, and range is 3000L/H；Described pressure transducer I, pressure transducer II and pressure transducer III are strain-type precision pressure sensor, precision 0.5 grade, range 1000mbar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520930962.7U CN205374213U (en) | 2015-11-20 | 2015-11-20 | Car carbon tank resistance detection device that ventilates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520930962.7U CN205374213U (en) | 2015-11-20 | 2015-11-20 | Car carbon tank resistance detection device that ventilates |
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| Publication Number | Publication Date |
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| CN205374213U true CN205374213U (en) | 2016-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520930962.7U Active CN205374213U (en) | 2015-11-20 | 2015-11-20 | Car carbon tank resistance detection device that ventilates |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105223100A (en) * | 2015-11-20 | 2016-01-06 | 柳州舜泽尔汽车零部件有限公司 | A kind of automobile canister aeration resistance pick-up unit and detection method thereof |
| CN107061062A (en) * | 2017-06-19 | 2017-08-18 | 天津内燃机研究所（天津摩托车技术中心） | Fuel-steam control system and control method |
| CN107830965A (en) * | 2017-12-06 | 2018-03-23 | 武汉飞恩微电子有限公司 | A kind of automobile canister desorption system pressure sensor |
| CN109900496A (en) * | 2019-03-15 | 2019-06-18 | 堀场仪器（上海）有限公司 | Canister pilot system and its operating method |
| CN115406790A (en) * | 2022-09-02 | 2022-11-29 | 英杰维特功能材料(珠海)有限公司 | Application method of carbon tank desorption testing device |
-
2015
- 2015-11-20 CN CN201520930962.7U patent/CN205374213U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105223100A (en) * | 2015-11-20 | 2016-01-06 | 柳州舜泽尔汽车零部件有限公司 | A kind of automobile canister aeration resistance pick-up unit and detection method thereof |
| CN105223100B (en) * | 2015-11-20 | 2018-03-02 | 柳州舜泽尔汽车零部件有限公司 | A kind of automobile canister aeration resistance detection means and its detection method |
| CN107061062A (en) * | 2017-06-19 | 2017-08-18 | 天津内燃机研究所（天津摩托车技术中心） | Fuel-steam control system and control method |
| CN107061062B (en) * | 2017-06-19 | 2019-07-16 | 天津内燃机研究所（天津摩托车技术中心） | Fuel-steam control system and control method |
| CN107830965A (en) * | 2017-12-06 | 2018-03-23 | 武汉飞恩微电子有限公司 | A kind of automobile canister desorption system pressure sensor |
| CN109900496A (en) * | 2019-03-15 | 2019-06-18 | 堀场仪器（上海）有限公司 | Canister pilot system and its operating method |
| CN115406790A (en) * | 2022-09-02 | 2022-11-29 | 英杰维特功能材料(珠海)有限公司 | Application method of carbon tank desorption testing device |
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