CN202165167U - Automobile tail gas purification compound electronic control apparatus - Google Patents
Automobile tail gas purification compound electronic control apparatus Download PDFInfo
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- CN202165167U CN202165167U CN2011200565738U CN201120056573U CN202165167U CN 202165167 U CN202165167 U CN 202165167U CN 2011200565738 U CN2011200565738 U CN 2011200565738U CN 201120056573 U CN201120056573 U CN 201120056573U CN 202165167 U CN202165167 U CN 202165167U
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Abstract
An automobile tail gas purification compound electronic control apparatus comprises an engine exhaust gas recirculation EGR electronic control subsystem and an air injection electronic control subsystem, wherein the EGR electronic control subsystem comprises at least a by-pass pipe connecting an exhaust pipe and an engine air inlet pipe, and the air injection electronic control subsystem comprises an air compressor pump and at least an air intake pipe connecting the air compressor pump and the exhaust pipe. In the EGR electronic control subsystem, at least one high frequency solenoid valve is arranged in the by-pass pipe, and the connection point between the by-pass pipe and the engine air inlet pipe is situated behind a throttle. In the air injection electronic control subsystem, each air intake pipe is provided with at least one high frequency solenoid valve, and the connection point between the air intake pipe and the exhaust pipe is situated before the connection point between the by-pass pipe and the exhaust pipe (3) of the EGR electronic control subsystem. An ECU controlled high frequency solenoid valve is used for replacing a valve for continuously adjusting flow in the prior art, which greatly improves mixing efficiency, and reduces automobile emission of NOx, CO and HC.
Description
Technical field
The utility model relates to a kind of petrol engine and diesel-engine road vehicle electric control device, particularly a kind of vehicle tai-gas clean-up composite electron control gear that is used to purify various Vehicular exhausts.
Background technique
Because motor vehicle exhaust emission has become one of main source of present pollution of atmosphere, begun to carry out more and more stricter Abgasgesetz in the world.At present, the vehicle treatment technology that generally adopts the fuel oil EFI to add ternary catalyzing unit solves the exhaust emissions problem.The major issue that this method in use exists is; Ternary catalyzing unit can wear out when vehicle uses gradually, and conversion efficiency descends, and causes vehicle deterioration of emission in use for some time; Often in the life time of regulation; The ternary catalyzing unit that more renews do not reach the required standard of dispatching from the factory gradually, even can not be dealt with problems.For a large amount of In-Use Motor Vehicles, this is a kind of comparatively general phenomenon.At present; To this problem; Generally adopt exhaust gas recirculation (EGR) method further to handle, but this method utilizes stepper motor to drive the waste gas air inflow of the valve control access to engine cylinder of a continuously adjusting flow rate, waste gas mixes with air (or mixed gas) in the back entering cylinder participates in burning.In said process,, cause the mixing quality of it and air (or mixed gas) not high because the valve of waste gas through continuously adjusting flow rate is the laminar flow shape after flowing out.And said method can only reduce the NOx discharging, can not go to control the discharging of CO, HC simultaneously.In the ordinary course of things, reducing motor NOx is interrelated and contradiction with reduction CO, HC discharging, when promptly reducing NOx, if deal with improperly, might cause CO, HC to rise, and vice versa.
The model utility content
In order to solve the deficiency that exists in the above-mentioned background technology; The utility model provides a kind of mixing efficiency that can increase substantially between gas; Further reduce the vehicle tai-gas clean-up composite electron control gear of toxic emission, this device can be according to the engine emission situation, when the ternary catalyzing unit conversion efficiency descends or lost efficacy; Can reduce the discharging of CO, HC and NOx simultaneously, make it reach the emission standard of regulation.
For realizing above-mentioned purpose; The utility model adopts following technological scheme: a kind of vehicle tai-gas clean-up composite electron control gear that is applicable to petrol engine or diesel engine; It comprises the electronically controlled subtense angle of two covers; Wherein a cover is the automatically controlled subtense angle of exhaust gas recirculation EGR, and another set of is electronic air control injection subsystem, and the automatically controlled subtense angle of said EGR comprises that at least one connects the bypass duct of outlet pipe 3 and engine air inlet tube 2; Said electronic air control injection subsystem comprises that air pressure pump 12 is connected the air intake pipe 15 of air pressure pump 12 and outlet pipe 3 with at least one; It is characterized in that; In the automatically controlled subtense angle of EGR; At least be provided with a high-frequency electromagnetic valve 7 in every bypass duct, the control end of all high-frequency electromagnetic valves 7 links to each other with electronic control unit I output terminal, and electronic control unit I input end connects the tach signal of motor and the position signal of closure; The tie point of said bypass duct and engine air inlet tube 2 is positioned at after the closure 11.In the air jet subtense angle; At least be provided with a high-frequency electromagnetic valve 14 in every air intake pipe 15; The control end of all high-frequency electromagnetic valves 14 links to each other with the output terminal of electronic control unit II; The input end of electronic control unit II connects engine rotational speed signal and throttle position signal, and the tie point of said air intake pipe 15 and outlet pipe 3 is positioned at before the tie point of bypass duct and outlet pipe 3 of the automatically controlled subtense angle of EGR.
Preferably, the bypass duct and engine air inlet tube 2 joints of the automatically controlled subtense angle of said exhaust gas recirculation EGR can be provided with tonifying Qi plate 9, and at least one air inlet nozzle 10 is installed on the tonifying Qi plate 9, and each air inlet nozzle 10 links to each other with a corresponding bypass duct.
Furtherly, said every bypass duct can link to each other with corresponding air inlet nozzle 10 on the tonifying Qi plate 9 through super heated rubber pipe 16.
In such scheme, can also be provided with cooler 8 in the bypass duct of the automatically controlled subtense angle of said exhaust gas recirculation EGR, the inlet of cooler 8 links to each other with outlet pipe 3, and outlet links to each other with the inlet of high-frequency electromagnetic valve 7.
Preferably, bypass duct in the automatically controlled subtense angle of said exhaust gas recirculation EGR and the air intake pipe 15 in the air jet subtense angle are metallic conduit.
In such scheme, the air intake pipe in the said air jet electronic control subtense angle can also be provided with air-strainer 17, and this air-strainer 17 is between the inlet of the outlet of air pressure pump 12 and high-frequency electromagnetic valve 14.
In such scheme, if also be provided with ternary catalyzing unit in the said outlet pipe, the tie point of the bypass duct of the automatically controlled subtense angle of EGR and outlet pipe 3 should be positioned at after the ternary catalyzing unit 13; The air intake pipe 15 of air jet electronic control subtense angle and the tie point of outlet pipe 3 should be before the ternary catalyzing unit or two ternary catalyzing units between (when two ternary catalyzing units are arranged).
In such scheme, said electronic control unit I and II can be made up of the circuit board that with the single-chip microcomputer is core.
In such scheme, said throttle signal can be produced by the TPS 18 that is installed on the closure 11, and engine rotational speed signal can be produced by engine rotation speed sensor 5.
The utility model is made up of two interrelated sub-control systems that can work independently again, i.e. exhaust gas recirculation ERG electronic control subtense angle and air jet electronic control subtense angle.Each subtense angle all has own independent electronic control unit (ECU), and each ECU all connects engine speed and throttle position signal respectively.ECU confirms operating mode according to engine speed and throttle position signal, through tabling look-up and interpolation arithmetic, obtains the high-frequency electromagnetic valve control signal under this operating mode among the MAP from be pre-stored in ECU.
In the EGR automatical control system, high-frequency electromagnetic valve is sent into the waste gas of discharging in the suction tude by certain EGR ratio according to the control signal of ECU, gets into cylinder again and participates in burning, reaches the purpose that reduces the NOx discharging.
In air jet electronic control subtense angle; High-frequency electromagnetic valve is sent into the pressurized air of air pressure pump output in the outlet pipe by certain quality according to the control signal of ECU; Participate in the burning of exhaust and the reaction of ternary catalyzing unit, reach the purpose that reduces CO, HC.
The utility model utilizes ECU control high-frequency electromagnetic valve to replace the valve of the continuously adjusting flow rate in the traditional scheme, makes the hybrid mode between gas become the turbulent flow mixing by the laminar flow mixing, has increased substantially mixing efficiency.
The relevance of the utility model through two sub-systems, can reach according to the MAP that emission request is adjusted two sub-systems reduce NOx, CO and HC simultaneously purpose to satisfy different emission regulation demands.Two sub-control systems of the utility model are separate work, promptly can be according to the situation that exceeds standard of Vehicular exhaust different components, adopt one of them subtense angle behind adjustment control software and the MAP separately, and reduce toxic emission, satisfy different emission regulation demands.
The utility model still can reach the purpose of good reduction discharging when the ternary catalyzing unit conversion efficiency descends (wearing out) or lost efficacy.Can be widely used at treating tail gas, also can be used for the supporting of new car reduction of discharging with car.
Description of drawings
Fig. 1 is example structure figure
Fig. 2 is embodiment's electronic control unit circuit diagram
Embodiment
Embodiment: with reference to Fig. 1, present embodiment is made up of automatically controlled subtense angle of exhaust gas recirculation EGR and air jet electronic control subtense angle.The automatically controlled subtense angle of EGR comprises electronic control unit I, two high-frequency electromagnetic valves 7 and cooler 8.Electronic control unit I connects the speed probe 5 and throttle position signal sensor 18 of motor 1 through signaling line, thereby obtains engine rotational speed signal and throttle position signal.The output signal of electronic control unit I is wired to high-frequency electromagnetic valve 7, and the inlet of high-frequency electromagnetic valve 7 is connected through metal tube with the outlet of cooler 8, and the inlet of cooler 8 links to each other with outlet pipe 3 through metal tube.The outlet of two high-frequency electromagnetic valves 7 respectively through super heated rubber pipe 16 respectively with tonifying Qi plate 9 on two air inlet nozzles 10 link to each other, tonifying Qi plate 9 is installed on closure 11 engine air inlet tube 2 afterwards.During the automatically controlled subsystem work of EGR, the waste gas in the outlet pipe arrives high-frequency electromagnetic valves 7 through metal tube and cooler 8.Electronic control unit ECU confirms operating mode according to engine rotational speed signal and throttle position signal simultaneously, from the MAP that is pre-stored in electronic control unit ECU, through tabling look-up and interpolation arithmetic, obtains the high-frequency electromagnetic valve control signal under this operating mode.High-frequency electromagnetic valve 7 according to the control signal of ECU by certain ratio with waste gas in tonifying Qi plate 9 is sent into engine air inlet tube 2, and mix the back with incoming mixture and get into and participate in burning in the cylinder, reduce the discharging of NOx.
In the air jet electronic control subtense angle, electronic control unit II connects the speed probe 5 and throttle position signal sensor 18 of motor 1 through signaling line, thereby obtains engine rotational speed signal and throttle position signal.The output signal of electronic control unit II connects two high-frequency electromagnetic valves 14 through lead; The entry end of high-frequency electromagnetic valve 14 links to each other with an air pump 12; One air-strainer 17 is arranged between air pump 12 and high-frequency electromagnetic valve 14, and the outlet of high-frequency electromagnetic valve 14 links to each other with outlet pipe 3 through a metal tube.Two ternary catalyzing units 13 are housed on the outlet pipe 3, and the connecting place of high-frequency electromagnetic valve 14 and outlet pipe 3 is between two ternary catalyzing units 13.During air jet electronic control subsystem work, air arrives the inlet of high-frequency electromagnetic valve 14 again through air pump 12 compressions through air-strainer 17 backs.Electronic control unit ECU confirms operating mode according to engine rotational speed signal and throttle position signal simultaneously, from the MAP that is pre-stored in electronic control unit ECU, through tabling look-up and interpolation arithmetic, obtains the high-frequency electromagnetic valve control signal under this operating mode.High-frequency electromagnetic valve 14 is delivered to air in the outlet pipe 3 by certain quality according to the control signal of electronic control unit ECU, mixes the work that the back is participated in the outlet pipe internal combustion and participated in ternary catalyzing unit 13 with waste gas, reaches the purpose that reduces CO, HC.
With reference to Fig. 2, it is the circuit board of core with the single-chip microcomputer that the electronic control unit I among Fig. 1, II are one, and single-chip microcomputer adopts general microcontroller chip (8 single-chip microcomputer IC1).TPS voltage signal Vin is input to the ADC pin of single-chip microcomputer IC1 after the analog-to-digital conversion of the buffered of IC2 and IC3.Engine speed pulse signal Int is input to the INT pin of single-chip microcomputer IC1 after photoelectricity isolation and anti-phase are handled, by single-chip microcomputer IC1 calculation engine rotating speed and throttle position.The power supply of electronic control unit and high-frequency electromagnetic valve Q is provided by the 12VDC power supply of vehicle.Power supply converts the voltage stabilizing electricity into through IC5 and makes voltage vcc, and uses the watchdog circuit of IC4 to solve anti-interference problem.Single-chip microcomputer IC1 output OUT switch controlling signal is through IC6 power amplification rear driving high-frequency electromagnetic valve Q, through reaching the purpose of control flows through the air quantity of valve the switching time of controlling it.Two electronic control unit I adopt identical circuit board with II, and just wherein control software is different with MAP.Said high-frequency electromagnetic valve Q is described high-frequency electromagnetic valve 7 of present embodiment or high-frequency electromagnetic valve 14.
Claims (9)
1. vehicle tai-gas clean-up composite electron control gear that is applicable to petrol engine or diesel engine; It comprises two cover electronic control subtense angles; Wherein a cover is the automatically controlled subtense angle of engine exhaust recirculation EGR; Another set of is air jet electronic control subtense angle, and the automatically controlled subtense angle of said EGR comprises that at least one connects the bypass duct of outlet pipe (3) and engine air inlet tube (2); Said air jet subtense angle comprises that air pressure pump (12) is connected the air intake pipe (15) of air pressure pump (12) and outlet pipe (3) with at least one; It is characterized in that; In the automatically controlled subtense angle of EGR; At least be provided with a high-frequency electromagnetic valve (7) in every bypass duct; The control end of all high-frequency electromagnetic valves (7) links to each other with electronic control unit I output terminal, and the input end of electronic control unit I connects engine rotational speed signal and throttle position signal, and said bypass duct (16) is positioned at closure (11) afterwards with the tie point of engine air inlet tube (2); In the air jet subtense angle; At least be provided with a high-frequency electromagnetic valve (14) in every air intake pipe (15); The control end of all high-frequency electromagnetic valves (14) links to each other with the output terminal of electronic control unit II; The input end of electronic control unit II connects engine rotational speed signal and throttle position signal, and the tie point of said air intake pipe (15) and outlet pipe (3) is positioned at before the tie point of bypass duct and outlet pipe (3) of the automatically controlled subtense angle of EGR.
2. a kind of vehicle tai-gas clean-up composite electron control gear according to claim 1; It is characterized in that; In the automatically controlled subtense angle of exhaust gas recirculation EGR; Bypass duct and engine air inlet tube (2) joint is provided with tonifying Qi plate (9), and at least one air inlet nozzle (10) is installed on the tonifying Qi plate (9), and each air inlet nozzle (10) links to each other with a corresponding bypass duct.
3. a kind of vehicle tai-gas clean-up composite electron control gear according to claim 2 is characterized in that, said every bypass duct links to each other with corresponding air inlet nozzle (10) on the tonifying Qi plate (9) through super heated rubber pipe (16).
4. a kind of vehicle tai-gas clean-up composite electron control gear according to claim 1; It is characterized in that; In the automatically controlled subtense angle of exhaust gas recirculation EGR; Also be provided with cooler (8) in the said bypass duct, the inlet of cooler (8) links to each other with outlet pipe (3), and outlet links to each other with the inlet of high-frequency electromagnetic valve (7).
5. a kind of vehicle tai-gas clean-up composite electron control gear according to claim 1 is characterized in that, bypass duct in the automatically controlled subtense angle of exhaust gas recirculation EGR and the air intake pipe (15) in the air jet subtense angle are metallic conduit.
6. a kind of vehicle tai-gas clean-up composite electron control gear according to claim 1; It is characterized in that; In the air jet subtense angle; Said air intake pipe also is provided with air-strainer (17), and this air-strainer (17) is positioned between the inlet of outlet and high-frequency electromagnetic valve (14) of air pressure pump (12).
7. a kind of vehicle tai-gas clean-up composite electron control gear according to claim 1; It is characterized in that; When vehicle is equipped with ternary catalyzing unit; The tie point of the bypass duct of the automatically controlled subtense angle of EGR and outlet pipe (3) is positioned at ternary catalyzing unit (13) afterwards, the air intake pipe (15) of air jet electronic control subtense angle and the tie point of outlet pipe (3) be positioned at before the ternary catalyzing unit or two ternary catalyzing units among.
8. a kind of vehicle tai-gas clean-up composite electron control gear according to claim 1 is characterized in that said electronic control unit I and II are made up of the circuit board that with the single-chip microcomputer is core.
9. a kind of vehicle tai-gas clean-up composite electron control gear according to claim 1; It is characterized in that; Said throttle signal is produced by the TPS (18) that is installed on the closure (11), and engine rotational speed signal is produced by engine rotation speed sensor (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200565738U CN202165167U (en) | 2011-03-07 | 2011-03-07 | Automobile tail gas purification compound electronic control apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200565738U CN202165167U (en) | 2011-03-07 | 2011-03-07 | Automobile tail gas purification compound electronic control apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN202165167U true CN202165167U (en) | 2012-03-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200565738U Expired - Fee Related CN202165167U (en) | 2011-03-07 | 2011-03-07 | Automobile tail gas purification compound electronic control apparatus |
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| CN (1) | CN202165167U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155321A (en) * | 2011-03-07 | 2011-08-17 | 武汉格林威科技发展有限公司 | Automobile tail gas purification composite electronic control device |
-
2011
- 2011-03-07 CN CN2011200565738U patent/CN202165167U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155321A (en) * | 2011-03-07 | 2011-08-17 | 武汉格林威科技发展有限公司 | Automobile tail gas purification composite electronic control device |
| CN102155321B (en) * | 2011-03-07 | 2013-11-27 | 武汉格林威科技发展有限公司 | Automobile tail gas purification composite electronic control device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120314 Termination date: 20150307 |
|
| EXPY | Termination of patent right or utility model |