CN101603465A - Automobile three-way catalysts and intake duct washing unit and controlling method - Google Patents
Automobile three-way catalysts and intake duct washing unit and controlling method Download PDFInfo
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- CN101603465A CN101603465A CNA2009103042753A CN200910304275A CN101603465A CN 101603465 A CN101603465 A CN 101603465A CN A2009103042753 A CNA2009103042753 A CN A2009103042753A CN 200910304275 A CN200910304275 A CN 200910304275A CN 101603465 A CN101603465 A CN 101603465A
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Abstract
The present invention relates to a kind of automobile three-way catalysts and intake duct washing unit and controlling method, comprise a washing agent intake line, one end of pipeline connects cleaning agent tank, the other end of pipeline is a motor vacuum pipe interface, vacuum pressure sensor and electromagnetic flow control device have been linked in sequence respectively in the pipeline, described device also comprises a washing agent flow control circuit, in circuit, be provided with vacuum pressure and measure interface and Electromagnetic Flow control interface, set a vacuum pressure maximum pressure value and minimum pressure values interval, electromagnetic flow control device is in that to open flow be 13.5 to restrain ± 0.5 gram/minute states in this is interval, otherwise electromagnetic flow control device is in off state; The invention has the beneficial effects as follows: the closed loop that can realize washing agent influx and vacuum pressure is controlled automatically; Guarantee ternary catalytic device for engine and intake duct cleaning quality, avoided motor to embrace cylinder, stifled cylinder major break down generation; Simple in structure, it is very convenient to operate.
Description
Technical field
The present invention relates to vehicle maintenance and repair facility particularly a kind of automobile three-way catalysts and intake duct washing unit and controlling method.
Background technique
People more and more pay attention to the pollution problem of motor car engine, each releases new higher standard, for the pollution people that eliminate automobile have added ternary catalyzing unit in automobile, but operation along with automobile, the sulphur that contains in the gasoline, phosphorus, zinc, manganese still can form one deck sulphur, phosphorus, zinc, manganese complex compound on the catalyst converter surface, cause the ternary catalyzing unit function to reduce,, will clean ternary catalyzing unit and automotive air induction duct in case therefore vehicle exhaust is defective.The so-called cleaning is exactly to add scavenger specially from intake duct in engine operation process, people have been placed on attention quality and the effect that improves scavenger specially in cleaning at present, and ignored the control of washing agent addition, though through constantly improving, the control of washing agent addition is controlled this extensive and traditional approach from just installing needle-valve additional at connecting tube, in the process that adds at washing agent, adopted accurate flowmeter monitoring, but the control of flow still is the control of people's hand-screw button, along with the addition of the different washing agents of engine speed will change thereupon, and manual control can't be followed at all, make present washing agent rely on artificial experience to add fully, do not note to cause an armful cylinder slightly, the major break down of stifled cylinder, the accident rate height is to decide because of the people fully, make ternary catalytic device for engine and intake duct cleaning quality be difficult to control, for cleaning has brought great inconvenience.
Summary of the invention
The objective of the invention is a kind of automobile three-way catalysts and intake duct washing unit and the controlling method technological scheme that propose at the problems referred to above.This scheme has adopted the closed loop automatic control mode, control the washing agent input according to engine charge pressure, guaranteed ternary catalytic device for engine and intake duct cleaning quality, avoided motor to embrace cylinder, stifled cylinder major break down generation, for cleaning brings great convenience.
To achieve these goals, the technical solution of the utility model is: a kind of automobile three-way catalysts and intake duct washing unit, comprise a washing agent intake line, one end of pipeline connects cleaning agent tank, the other end of pipeline is a motor vacuum pipe interface, from the motor vacuum pipe interface of pipeline to cleaning agent tank, vacuum pressure sensor and electromagnetic flow control device have been linked in sequence respectively, described device also comprises a washing agent flow control circuit, in circuit, be provided with vacuum pressure and measure interface and Electromagnetic Flow control interface, described vacuum pressure sensor electrical output signal is connected to vacuum pressure and measures interface, and described Electromagnetic Flow control interface is connected with electromagnetic flow control device electrical signal control input end.
A kind of automobile three-way catalysts and intake duct cleaning control method, based on an automobile three-way catalysts and intake duct washing unit, this device comprises a washing agent intake line, one end of pipeline connects cleaning agent tank, the other end of pipeline is a motor vacuum pipe interface, from the motor vacuum pipe interface of pipeline to cleaning agent tank, vacuum pressure sensor and electromagnetic flow control device have been linked in sequence respectively, described device also comprises a washing agent flow control circuit, in circuit, be provided with vacuum pressure and measure interface and Electromagnetic Flow control interface, described vacuum pressure sensor electrical output signal is connected to vacuum pressure and measures interface, and described Electromagnetic Flow control interface is connected with electromagnetic flow control device electrical signal control input end; Described controlling method is:
At first set a vacuum pressure maximum pressure value and minimum pressure values interval, in described interval electromagnetic flow control device be in open flow be 13.5 the gram ± 0.5 gram/minute states, electromagnetic flow control device is not in off state in described interval; Above-mentioned vacuum pressure pressure maximum and pressure minimum and corresponding flow status data are deposited in the storage of washing agent flow control circuit, wherein said open flow be 13.5 the gram ± 0.5 gram/minute state correspondence be electromagnetic flow control device service time, the engine charge pipeline joint of pipeline is inserted automotive air induction duct, ato unit;
A. the washing agent flow control circuit reads a vacuum pressure value from vacuum pressure sensor;
B. judge that the vacuum pressure value is whether in set vacuum pressure value interval;
C. judged result is in the interval, then from Electromagnetic Flow control interface output controlling value to electromagnetic flow control device, guarantee that electromagnetic flow control device is in that to open flow be 13.5 grams ± 0.5 gram/minute states;
D. judged result is then exported controlling value to electromagnetic flow control device from the Electromagnetic Flow control interface not in the interval, guarantees that electromagnetic flow control device is in off state.
The invention has the beneficial effects as follows:
Can realize that the closed loop of washing agent influx and vacuum pressure controls automatically;
Guarantee ternary catalytic device for engine and intake duct cleaning quality, avoided motor to embrace cylinder, stifled cylinder major break down generation;
Simple in structure, it is very convenient to operate.
Below in conjunction with drawings and Examples the present invention is done a detailed description.
Description of drawings
Fig. 1 structural representation of the present invention;
Fig. 2 electric control principle schematic representation of the present invention;
Fig. 3 flow control time value of the present invention and vacuum pressure value relation table;
Fig. 4 measured discharge controlling value of the present invention and vacuum pressure value relation table.
Embodiment
A kind of automobile three-way catalysts and intake duct washing unit embodiment, referring to Fig. 1, described device comprises a washing agent intake line 1, one end of pipeline connects cleaning agent tank 2, the other end of pipeline is a motor vacuum pipe interface 3, from the motor vacuum pipe interface of pipeline to cleaning agent tank, vacuum pressure sensor 4 and electromagnetic flow control device 5 have been linked in sequence respectively, described device also comprises a washing agent flow control circuit 6, in circuit, be provided with vacuum pressure and measure interface 6-4 and Electromagnetic Flow control interface 6-5, described vacuum pressure sensor point output signal is connected to vacuum pressure and measures interface, and described Electromagnetic Flow control interface is connected with electromagnetic flow control device electrical signal control input end.
Vacuum pressure sensor described in the embodiment is that the model of selling on the market is an AT80 series vacuum pressure sensor, and the model that present embodiment uses is the vacuum pressure sensor of AT8013; Described vacuum pressure sensor is attempted by in the washing agent intake line by a three-way interface 1-1; Described electromagnetic flow control device is automobile electrically-controlled oil nozzle, and model is STN99, and the electronic control injection mouth is serially connected in the washing agent intake line.
Described motor vacuum pipe interface is the taper hollow tubular of the outer rib-loop of a band, and this pipe can insert on the rubber vacuum tube of automobile, and the screw thread on the pipe can play the effect of sealing, but described motor vacuum pipe interface also is not limited only to this.
Described washing agent flow control circuit comprises a single-chip microcomputer 6-1, single-chip microcomputer contains turnable pulse width/arteries and veins delivery outlet (PWM) and a plurality of data input/output port (D0-D7 frequently, P1-P3), be provided with liquid crystal display 6-2, clean time setting key 6-3, vacuum pressure measurement interface 6-4 and Electromagnetic Flow control interface 6-5 around single-chip microcomputer; Wherein said liquid crystal display is to be connected with the data output of single-chip microcomputer by LCD driver 6-6, the described clean time setting key key that is the added-time key when subtracting, added-time key key when subtracting is connected with the data inlet opening of single-chip microcomputer, it is the data inlet opening of single-chip microcomputer that described vacuum pressure is measured interface, and described Electromagnetic Flow control interface is turnable pulse width/arteries and veins frequency delivery outlet of single-chip microcomputer.
Single-chip microcomputer described in the embodiment is the single-chip microcomputer that 8 bit strips sold on the market have internal memory, what present embodiment used is the single-chip microcomputer of model as the 8 bit strip 24K flash memories of STC125624, described LCD driver is that the model of selling on the market is HT1621, and described Electromagnetic Flow control interface comprises turnable pulse width, the arteries and veins frequency delivery outlet of single-chip microcomputer and the polarized lense pipe driving 6-7 that is connected with turnable pulse width/arteries and veins frequency delivery outlet of single-chip microcomputer.
The present invention is because circuit is simple, can make portable housing structure, washing agent intake line, cleaning agent tank, vacuum pressure sensor, electromagnetic flow control device, washing agent flow control circuit are installed in the casing, leave motor vacuum pipe interface in the outside of casing, key window when being provided with display device and added-time key on the surface of casing and subtracting, power supply uses the automobile storage battery power supply, and it is very convenient to operate.
A kind of automobile three-way catalysts and intake duct cleaning control method embodiment are referring to embodiment 1 and Fig. 3, based on embodiment's 1 described a kind of automobile three-way catalysts and intake duct washing unit; Described ternary catalyzing unit and intake duct cleaning control method are:
At first set a vacuum pressure maximum pressure value and minimum pressure values interval, electromagnetic flow control device is in and opens the service time that flow is 13.5 grams ± 0.5 a gram/minute state in described interval, and electromagnetic flow control device is not in off state in described interval; With above-mentioned vacuum pressure maximum and pressure minimum and corresponding flow state service time deposit data in the storage of washing agent flow control circuit, wherein said open flow be ± 0.5/ minute state correspondence of 13.5 grams be electromagnetic flow control device service time, the motor vacuum pipe interface of pipeline is inserted vacuum automobile pipeline, ato unit;
A. the washing agent flow control circuit reads a vacuum pressure value from vacuum pressure sensor;
B. judge that the vacuum pressure value is whether in set vacuum pressure value interval;
C. judged result is in the interval, then is worth electromagnetic flow control device from Electromagnetic Flow control interface output service time, guarantees that electromagnetic flow control device is in that to open flow be 13.5 grams ± 0.5 gram/minute states;
D. judged result is then exported controlling value to electromagnetic flow control device from the Electromagnetic Flow control interface not in the interval, guarantees that electromagnetic flow control device is in off state.
Vacuum pressure sensor is to convert vacuum-pressure signal to voltage signal to pass to the washing agent flow control circuit among the embodiment; The relation of its vacuum pressure (P) and voltage (V) is: V=0.053P-0.56, (this relation is known, and pressure P unit be kPa that voltage unit is for lying prostrate);
To open flow be to determine service time by solenoid valve to electromagnetic flow control device among the embodiment.
Described vacuum pressure maximum pressure value and minimum pressure values interval comprise a plurality of pressure areas, and corresponding a plurality of pressure areas are provided with a plurality of electromagnetic flow control device service time.
Described a plurality of pressure area is a kind of of 5 or 6 or 7 or 8 or 9, gets the accurate more of many more controls.
The present embodiment model be electronic control injection mouth electromagnetic flow control device service time of STN99 and vacuum pressure relation table as shown in Figure 3.
The maximum pressure value of vacuum pressure described in the embodiment is 75 kPas (KPa), and the vacuum pressure minimum pressure values is 20 kPas (KPa).
The car engine difference, intake duct vacuum pressure difference; The rotating speed difference of engine, intake duct vacuum pressure are also different; These factors all can influence the flow that engine sucks washing agent, therefore include between 9 pressure areas at described 75 kPas of vacuum pressures and 20 kpa pressure value intervals, between 9 pressure areas be 75 kPas to 61 kPas, 61 kPas to 56 kPas, 56 kPas to 51 kPas, 51 kPas to 46 kPas, 46 kPas to 41 kPas, 41 kPas to 36 kPas, 36 kPas to 31 kPas, 31 kPas to 26 kPas respectively, 26 kPas to 21 kPas; It is 18.2 milliseconds that corresponding 75 kPas to 61 kPas intervals are provided with electromagnetic flow control device service time, it is 17.2 milliseconds that corresponding 61 kPas to 56 kPas intervals are provided with electromagnetic flow control device service time, it is 16.4 milliseconds that corresponding 56 kPas to 51 kPas intervals are provided with electromagnetic flow control device service time, it is 14.7 milliseconds that corresponding 51 kPas to 46 kPas intervals are provided with electromagnetic flow control device service time, it is 14 milliseconds that corresponding 46 kPas to 41 kPas intervals are provided with electromagnetic flow control device service time, it is 13.4 milliseconds that corresponding 41 kPas to 36 kPas intervals are provided with electromagnetic flow control device service time, it is 12.4 milliseconds that corresponding 36 kPas to 31 kPas intervals are provided with electromagnetic flow control device service time, it is 11 milliseconds that corresponding 31 kPas to 26 kPas intervals are provided with electromagnetic flow control device service time, and it is 10 milliseconds that corresponding 26 kPas to 21 kPas intervals are provided with electromagnetic flow control device service time.
Fig. 4 is the washing agent flow actual measurement table of concrete certain some vacuum pressure in corresponding 9 intervals.What the magnitude of voltage in the table was that the relation according to vacuum pressure (P) and voltage (V) draws also is the magnitude of voltage of actual measurement.
Concrete working procedure of the present invention is: the voltage signal (V survey) that measures when the degree of vacuum sensor is during greater than 3.40 volts, electromagnetic flow control device is turn-offed, the voltage signal (V survey) that measures when the degree of vacuum sensor is more than or equal to 2.67 volts and during less than 3.40 volts, time that electromagnetic flowmeter is opened (T)=18.2 millisecond, actual measurement corresponding flow (L)=13.6 gram/minute, the rest may be inferred, and the voltage signal (V survey) that measures when the degree of vacuum sensor is during less than 0.55 volt, and electromagnetic flow control device is turn-offed.
A kind of automobile three-way catalysts and intake duct cleaning control method improve embodiment, and referring to embodiment 2, described as different from Example 2 vacuum pressure maximum pressure value is 61 kPas (KPa), and the vacuum pressure minimum pressure values is 20 kPas (KPa).
Claims (10)
1. automobile three-way catalysts and intake duct washing unit, it is characterized in that, comprise a washing agent intake line, one end of pipeline connects cleaning agent tank, the other end of pipeline is a motor vacuum pipe interface, from the motor vacuum pipe interface of pipeline to cleaning agent tank, vacuum pressure sensor and electromagnetic flow control device have been linked in sequence respectively, described device also comprises a washing agent flow control circuit, in circuit, be provided with vacuum pressure and measure interface and Electromagnetic Flow control interface, described vacuum pressure sensor electrical output signal is connected to vacuum pressure and measures interface, and described Electromagnetic Flow control interface is connected with electromagnetic flow control device electrical signal control input end.
2. automobile three-way catalysts according to claim 1 and intake duct washing unit is characterized in that, described vacuum pressure sensor is attempted by in the washing agent intake line by a three-way interface; Described electromagnetic flow control device is automobile electrically-controlled oil nozzle, and the electronic control injection mouth is serially connected in the washing agent intake line.
3. automobile three-way catalysts according to claim 1 and intake duct washing unit is characterized in that, described vacuum pressure sensor model is the vacuum pressure sensor of AT8013.
4. automobile three-way catalysts according to claim 1 and intake duct washing unit is characterized in that, the electronic control injection mouth that described electromagnetic flow control device model is STN99.
5. automobile three-way catalysts according to claim 1 and intake duct washing unit, described washing agent flow control circuit comprises a single-chip microcomputer, single-chip microcomputer contains turnable pulse width/arteries and veins delivery outlet and a plurality of data input/output port frequently, it is characterized in that, be provided with liquid crystal display, clean time setting key, vacuum pressure measurement interface and Electromagnetic Flow control interface around single-chip microcomputer; Wherein said liquid crystal display is to be connected with the data output of single-chip microcomputer by LCD driver, described clean time setting key is added-time key and key when subtracting, added-time key key when subtracting is connected with the data inlet opening of single-chip microcomputer, it is the data inlet opening of single-chip microcomputer that described vacuum pressure is measured interface, and described Electromagnetic Flow control interface is turnable pulse width/arteries and veins frequency delivery outlet of single-chip microcomputer.
6. automobile three-way catalysts according to claim 5 and intake duct washing unit, it is characterized in that, described Electromagnetic Flow control interface comprise the turnable pulse width of single-chip microcomputer/arteries and veins frequently delivery outlet with the polarized lense pipe driving that is connected of delivery outlet frequently of turnable pulse width/arteries and veins of single-chip microcomputer.
7. automobile three-way catalysts and intake duct cleaning control method, based on an automobile three-way catalysts and intake duct washing unit, this device comprises a washing agent intake line, one end of pipeline connects cleaning agent tank, the other end of pipeline is a motor vacuum pipe interface, from the motor vacuum pipe interface of pipeline to cleaning agent tank, vacuum pressure sensor and electromagnetic flow control device have been linked in sequence respectively, described device also comprises a washing agent flow control circuit, in circuit, be provided with vacuum pressure and measure interface and Electromagnetic Flow control interface, described vacuum pressure sensor electrical output signal is connected to vacuum pressure and measures interface, and described Electromagnetic Flow control interface is connected with electromagnetic flow control device electrical signal control input end; It is characterized in that described controlling method is:
At first set a vacuum pressure maximum pressure value and minimum pressure values interval, electromagnetic flow control device is in and opens the service time that flow is 13.5 grams ± 0.5 a gram/minute state in described interval, and electromagnetic flow control device is not in off state in described interval; With above-mentioned vacuum pressure maximum and pressure minimum and corresponding flow state service time deposit data in the storage of washing agent flow control circuit, wherein said open flow be ± 0.5/ minute state correspondence of 13.5 grams be electromagnetic flow control device service time, the motor vacuum pipe interface of pipeline is inserted vacuum automobile pipeline, ato unit;
A. the washing agent flow control circuit reads a vacuum pressure value from vacuum pressure sensor;
B. judge that the vacuum pressure value is whether in set vacuum pressure value interval;
C. judged result is in the interval, then from Electromagnetic Flow control interface output controlling value to electromagnetic flow control device, guarantee that electromagnetic flow control device is in that to open flow be 13.5 grams ± 0.5 gram/minute states;
D. judged result is then exported controlling value to electromagnetic flow control device from the Electromagnetic Flow control interface not in the interval, guarantees that electromagnetic flow control device is in off state.
8. a kind of automobile three-way catalysts according to claim 7 and intake duct cleaning control method is characterized in that, described vacuum pressure maximum pressure value is 75 kPas, and the vacuum pressure minimum pressure values is 20 kPas.
9. a kind of automobile three-way catalysts according to claim 7 and intake duct cleaning control method, it is characterized in that, described vacuum pressure maximum pressure value and minimum pressure values interval comprise a plurality of pressure areas, and corresponding a plurality of pressure areas are provided with a plurality of electromagnetic flow control device service time.
10. a kind of automobile three-way catalysts according to claim 9 and intake duct cleaning control method, it is characterized in that, described a plurality of pressure area includes between 9 pressure areas, between 9 pressure areas be 75 kPas to 61 kPas, 61 kPas to 56 kPas, 56 kPas to 51 kPas, 51 kPas to 46 kPas, 46 kPas to 41 kPas, 41 kPas to 36 kPas, 36 kPas to 31 kPas, 31 kPas to 26 kPas respectively, 26 kPas to 21 kPas; It is 18.2 milliseconds that corresponding 75 kPas to 61 kPas intervals are provided with electromagnetic flow control device service time, it is 17.2 milliseconds that corresponding 61 kPas to 56 kPas intervals are provided with electromagnetic flow control device service time, it is 16.4 milliseconds that corresponding 56 kPas to 51 kPas intervals are provided with electromagnetic flow control device service time, it is 14.7 milliseconds that corresponding 51 kPas to 46 kPas intervals are provided with electromagnetic flow control device service time, it is 14 milliseconds that corresponding 46 kPas to 41 kPas intervals are provided with electromagnetic flow control device service time, it is 13.4 milliseconds that corresponding 41 kPas to 36 kPas intervals are provided with electromagnetic flow control device service time, it is 12.4 milliseconds that corresponding 36 kPas to 31 kPas intervals are provided with electromagnetic flow control device service time, it is 11 milliseconds that corresponding 31 kPas to 26 kPas intervals are provided with electromagnetic flow control device service time, and it is 10 milliseconds that corresponding 26 kPas to 21 kPas intervals are provided with electromagnetic flow control device service time.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009103042753A CN101603465B (en) | 2009-07-13 | 2009-07-13 | Washing device for three-way catalytic converter and inlet channel of automobile and control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009103042753A CN101603465B (en) | 2009-07-13 | 2009-07-13 | Washing device for three-way catalytic converter and inlet channel of automobile and control method |
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| CN101603465A true CN101603465A (en) | 2009-12-16 |
| CN101603465B CN101603465B (en) | 2011-04-13 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939212A (en) * | 2014-04-14 | 2014-07-23 | 吉林大学 | Visual dismantling-free three-way catalyst cleaning method and device |
| CN103953438A (en) * | 2014-02-12 | 2014-07-30 | 王洪刚 | Automatic cycle cleaning machine for automotive three-way catalyst |
| CN107795378A (en) * | 2017-11-13 | 2018-03-13 | 广东月福汽车用品有限公司 | A kind of cleaning equipment for engines |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103422985A (en) * | 2013-09-02 | 2013-12-04 | 刘新羽 | Online carbon deposit cleaning system for air inlet valve and combustion chamber of engine and control method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4877043A (en) * | 1987-03-20 | 1989-10-31 | Maurice Carmichael | Internal combustion engine scrubber |
| US5845225A (en) * | 1995-04-03 | 1998-12-01 | Mosher; Frederick A. | Microcomputer controlled engine cleaning system |
| CN100358635C (en) * | 2004-12-23 | 2008-01-02 | 倪初宁 | Method for cleaning and maintaining ternary catalyzing unit of gasoline motorcar |
| CN200952427Y (en) * | 2006-09-05 | 2007-09-26 | 石家庄胜嘉杰锐特汽车用品科技有限公司 | Vehicle three-effect catalytic converter non-dismounting cleaning machine |
| CN201535199U (en) * | 2009-07-13 | 2010-07-28 | 刘新羽 | Automobile three-way catalytic converter and inlet passage cleaning device |
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2009
- 2009-07-13 CN CN2009103042753A patent/CN101603465B/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953438A (en) * | 2014-02-12 | 2014-07-30 | 王洪刚 | Automatic cycle cleaning machine for automotive three-way catalyst |
| CN103953438B (en) * | 2014-02-12 | 2016-03-09 | 王洪刚 | Automobile three-way catalysts automatic cyclic cleaning machine |
| CN103939212A (en) * | 2014-04-14 | 2014-07-23 | 吉林大学 | Visual dismantling-free three-way catalyst cleaning method and device |
| CN107795378A (en) * | 2017-11-13 | 2018-03-13 | 广东月福汽车用品有限公司 | A kind of cleaning equipment for engines |
| CN107795378B (en) * | 2017-11-13 | 2023-10-13 | 广东月福汽车用品有限公司 | Engine cleaning device |
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| CN101603465B (en) | 2011-04-13 |
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