CN201535199U - Automobile three-way catalytic converter and inlet passage cleaning device - Google Patents
Automobile three-way catalytic converter and inlet passage cleaning device Download PDFInfo
- Publication number
- CN201535199U CN201535199U CN2009203060723U CN200920306072U CN201535199U CN 201535199 U CN201535199 U CN 201535199U CN 2009203060723 U CN2009203060723 U CN 2009203060723U CN 200920306072 U CN200920306072 U CN 200920306072U CN 201535199 U CN201535199 U CN 201535199U
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- flow control
- vacuum pressure
- interface
- electromagnetic flow
- automobile
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Abstract
The utility model provides an automobile three-way catalytic converter and an inlet passage cleaning device, comprising a detergent input pipe, wherein one end of the pipe is connected with a detergent can, the other end of the pipe is a vacuum pipe interface of the engine, and a vacuum pressure sensor and an electromagnetic flow controller are connected along the pipe in sequence. The device further comprises a detergent flow control circuit, wherein a vacuum pressure measuring interface and an electromagnetic flow control interface are arranged in the circuit, a vacuum pressure maximum value and a minimum value range is arranged, the electromagnetic flow controller is in an on state of 13.5+-0.5g/min, other wise the electromagnetic flow controller is in off state. The device of the utility model can implement closed-loop automatic control of the detergent flow and the vacuum pressure, makes sure the cleaning quality of the three-way catalytic converter and inlet passage, avoids the troubles of engine piston seizure and clog, and has advantages of simple structure and convenient operation.
Description
Technical field
The utility model relates to vehicle maintenance and repairs facility, particularly a kind of automobile three-way catalysts and intake duct washing unit.
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 purpose of this utility model is a kind of automobile three-way catalysts and the intake duct washing unit technological scheme that proposes 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.
The beneficial effects of the utility model are:
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 utility model is done a detailed description.
Description of drawings
Fig. 1 the utility model structural representation;
Fig. 2 the utility model electric control principle schematic representation;
Fig. 3 the utility model flow control time value and vacuum pressure value relation table;
Fig. 4 the utility model measured discharge controlling value 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.
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/arteries and veins frequency delivery outlet of single-chip microcomputer and drives 6-7 with the polarized lense pipe that turnable pulse width/arteries and veins frequency delivery outlet is connected of single-chip microcomputer.
The utility model 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.
Concrete method of work of the present utility model 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 this is interval, otherwise electromagnetic flow control device is in off state; 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 13.5 grams ± 0.5 gram/minute state correspondence be electromagnetic flow control device service time;
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 a common practise, 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.
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 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 utility model 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, 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.
Claims (8)
1. automobile three-way catalysts and intake duct washing unit, it is characterized in that, described washing unit 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.
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 is characterized in that, described motor vacuum pipe interface is the taper hollow tubular of the outer rib-loop of a band.
6. automobile three-way catalysts according to claim 1 and intake duct washing unit, it is characterized in that, 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.
7. automobile three-way catalysts according to claim 6 and intake duct washing unit is characterized in that, described single-chip microcomputer is that model is the single-chip microcomputer of the 8 bit strip 24K flash memories of STC125624.
8. automobile three-way catalysts according to claim 6 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203060723U CN201535199U (en) | 2009-07-13 | 2009-07-13 | Automobile three-way catalytic converter and inlet passage cleaning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203060723U CN201535199U (en) | 2009-07-13 | 2009-07-13 | Automobile three-way catalytic converter and inlet passage cleaning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201535199U true CN201535199U (en) | 2010-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203060723U Expired - Lifetime CN201535199U (en) | 2009-07-13 | 2009-07-13 | Automobile three-way catalytic converter and inlet passage cleaning device |
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| CN (1) | CN201535199U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101603465B (en) * | 2009-07-13 | 2011-04-13 | 刘新羽 | Washing device for three-way catalytic converter and inlet channel of automobile and control method |
| CN103758640A (en) * | 2014-01-27 | 2014-04-30 | 陈凤鸣 | Method for cleaning three-way catalyst without demounting three-way catalyst |
| CN105134378A (en) * | 2015-06-15 | 2015-12-09 | 于宏伟 | Cleaning method and device for automotive three-way catalytic converter |
-
2009
- 2009-07-13 CN CN2009203060723U patent/CN201535199U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101603465B (en) * | 2009-07-13 | 2011-04-13 | 刘新羽 | Washing device for three-way catalytic converter and inlet channel of automobile and control method |
| CN103758640A (en) * | 2014-01-27 | 2014-04-30 | 陈凤鸣 | Method for cleaning three-way catalyst without demounting three-way catalyst |
| CN105134378A (en) * | 2015-06-15 | 2015-12-09 | 于宏伟 | Cleaning method and device for automotive three-way catalytic converter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100728 Effective date of abandoning: 20090713 |