CN2656648Y - Waste gas recirculating device for non-electric controlled diesel engine - Google Patents
Waste gas recirculating device for non-electric controlled diesel engine Download PDFInfo
- Publication number
- CN2656648Y CN2656648Y CN 03208784 CN03208784U CN2656648Y CN 2656648 Y CN2656648 Y CN 2656648Y CN 03208784 CN03208784 CN 03208784 CN 03208784 U CN03208784 U CN 03208784U CN 2656648 Y CN2656648 Y CN 2656648Y
- Authority
- CN
- China
- Prior art keywords
- valve
- diesel engine
- egr valve
- electric
- gas recirculation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The utility model relates to a non-electric controlled diesel engine exhaust fitting gas recirculation, which comprises: an EGR valve body, on which is positioned an air inlet, an air outlet, the air inlet is connected with the exhaust pipe of the engine through the pipelines; the air outlet is connected with the inlet pipe of the engine through the pipelines; an EGR valve stem is positioned in the valve body; the head of valve stem is provided with a conical valve head and is matched with the conical valve head; the air inlet of the valve body is a conical hole; an output of an EGR valve actuator is connected with the tail of the valve stem; an electronic control unit of the EGR valve actuator is connected with the output end of the EGR valve actuator. The utility model has the advantages of reliable technology, not influencing the engine working characteristics, and low manufacturing costs; if the technology is used for the great numbers of the non-electric controlled diesel engine automobiles in our country, the great economic and social benefits will be brought to our country.
Description
Technical field
The utility model relates to a kind of control system of diesel engine exhaust emission, particularly installs about a kind of non-electric-control diesel engine exhaust gas recirculation (EGR).
Background technique
Automobile is because of having characteristics such as maneuverability, easy to use, efficient quick, and can go on a journey to people's work, freight transportation etc. brought great convenience, so its development is very rapid, uses also more and more universal.Along with the progress of automotive engineering, particularly diesel engine technologies, be that the automobile of the energy has obtained developing by leaps and bounds in recent years with diesel oil.As the diesel-engined vehicle of important member in the automobile family,, be subjected to more and more drivers' favor because it has series of advantages such as fuel consume is low, torque characteristics good, financial cost is low, safe and reliable.Exactly because like this, each developed country just is not used in it on the heavy-duty car in the world, and has turned to and be widely used on the light-duty vehicle (comprising sedan car) yet.Relevant statistics shows: the diesel-motored car share in Europe reaches present 40% from 15% of nineteen ninety.Yet, be the automobile of power with the ordinary diesel oil motor, the pollution on the environment that contains hazardous substance is a problem that can not be ignored in its discharge tail gas.These harmful matters comprise: 1, particulate matter (containing visible and invisible particulate matter); 2, carbon monoxide CO; 3, hydrocarbon HC; 4, nitrogen oxide (NO
x) etc., they enter after the atmosphere, can bring very holocaust with the physical environment of surviving to our human nationality, also our human human body are damaged simultaneously.Obvious, administered as tail gas not motor car engine, will cause serious consequence to the protection of physical environment, the health of human body, the sustainable development of society.Thereby European various countries have formulated strict limitation standard to exhaust of some harmful pollutants.The manufacturing technology of its diesel-engined vehicle also is greatly improved simultaneously, generally uses electric-control diesel engine on automobile, and its discharging has reached existing emission standard.
The technology that producer adopted and the manufacturing mechanism of the diesel engine for automobile of China's production at present are relatively backward, though the diesel-engined vehicle of these manufacturer production is a considerable number of, but its product all is non-electric-control diesel engine substantially, so also there is a big difference from the regulation of GB GB18352.2-2001 in the discharging of its pollutant.In order to change this present situation, most producers have adopted " smoke filter " and technology such as " catalytic conversion ", have more efficiently solved the emission problem of this type of car particulate matter, CO, HC, but to nitrogen oxide (NO
x) the discharging problem that exceeds standard, no matter be domestic manufacturer, still domestic universities and colleges and related scientific research unit all also do not take out making this type of homemade non-electric-control diesel engine motor vehicle exhaust emission product or model machine up to standard so far.Thereby, solve China NO of homemade non-electric-control diesel engine at present
xEmission problem is a very urgent task.
Summary of the invention
At China at present still in a large amount of present situations of producing non-automatically controlled, high pollution diesel engine, under the prerequisite of the least possible increase manufacture cost, the purpose of this utility model provides a kind of a series of good characteristics that both can keep diesel engine automobile, can reduce amount of nitrogen oxides in its tail gas very effectively again, make its exhaust emissions reach the non-electric-control diesel engine Exhaust gas recirculation device of the emission standard of No. 2 defineds of GB18352.2-2001 and Europe.
For achieving the above object, the utility model adopts following technological scheme: a kind of non-electric-control diesel engine Exhaust gas recirculation device, it comprises: an EGR valve body, it is provided with an inlet hole, one exhaust port, described inlet hole is connected with waste pipe by pipeline, and described exhaust port is connected with the suction tude of motor by pipeline; One EGR valve valve rod, it is arranged in the described valve body, and the head of described valve rod is provided with a cone-shaped valve head, cooperates with described cone-shaped valve head, and the inlet hole of described valve body is a cone shape hole; One EGR valve actuating mechanism, its output terminal connect described valve rod afterbody, are provided with a feedback signal extraction apparatus between described output terminal and described valve rod; The electronic control unit of one EGR valve actuating mechanism, it comprises that an input has the microprocessor that joins with the various working condition signals of motor, the output terminal of described microprocessor is connected through the input end of one drive circuit with described EGR valve actuating mechanism.
Described EGR valve actuating mechanism comprises: a solenoid valve that is connected with vacuum source, one is arranged on the air outlet hole on the described valve body, one is connected the flexible sheet of described valve rod afterbody, an and Returnning spring that is connected between described valve body top and the described flexible sheet, connect the other end of pipeline of described air outlet hole and the sucking pipe branch of described vacuum source and be located at the valve both sides of described solenoid valve, in case open the two connection of valve.
Described feedback signal extraction apparatus is one to be arranged on the pressure transducer on the pipeline between described air outlet hole and the described solenoid valve.
Described EGR valve actuating mechanism comprises: a stepper motor, the output terminal of described stepper motor is connected with described valve rod afterbody.
Described stepper motor is the straight line motion stepper motor.
Described stepper motor is that a stepper motor connects one " angle/displacement " transducer.
Described feedback signal extraction apparatus is one to be arranged on the deviation meter between described valve rod and the described transducer.
The utility model is owing to adopt above technological scheme, it has the following advantages: 1, the utility model utilizes the diesel engine air combustion than high, oxygen content more than needed is easy to form the not characteristics of labile nitrogen oxide, between the suction tude of diesel engine and outlet pipe, be provided with a cover and comprise the EGR valve, the electronic control unit of EGR valve actuating mechanism and EGR valve actuating mechanism is at interior electronic controlled EGR system, participate in combustion manner by the suction tude that a part of waste gas in the outlet pipe is sent back to again motor with fresh air, utilize this part exhaust gas temperature usury in burning, the low characteristics that are beneficial to the generation that reduces nitrogen oxide of oxygen content, when the air fuel ratio that does not influence diesel engine requires, destroy the formation condition of nitrogen oxide, reduce the discharging of nitrogen oxide.Experiment and test shows, compare with common " non-electric-control diesel engine ", adopt the utility model under the constant substantially prerequisite of the Economy of the dynamic property that keeps diesel engine, fuel oil, not only having reduced 40%-50% before the discharging of the nitrogen oxide in this type of vehicle exhaust, and the discharging of other pollutants is not increased, reach the emission standard of No. 2 defineds of GB18352.2-2001 and Europe, realized the purpose of this utility model.2, the utility model since in the EGR valve actuating mechanism, adopted one with the solenoid valve of vacuum source combination, and in valve body, be provided with a flexible sheet and a Returnning spring that is connected with the valve rod afterbody, the opening degree of switching frequency control EGR valve that therefore can be by solenoid valve, and what of exhausted air quantity control carry to engine air inlet tube.3, the utility model adopts linear stepping motor or stepper motor to add the driving mode that " angle/displacement " transducer drives valve rod in the EGR valve actuating mechanism, and mechanism is simplified, reliably more; Control accuracy is higher.4, the utility model is because the pipeline between air outlet hole and the solenoid valve is provided with a pressure transducer, or when adopting stepper motor, between valve rod and transducer, be provided with a deviation meter, therefore whether be in the optimum state if can understand engine operating condition at any time, and feed back to electronic control unit, to adjust.The utility model technology is reliable, does not influence the performance characteristic of motor, and low cost of manufacture is simple in structure, install easily, and reliable performance, easy to use, particularly can effectively control NO
xDischarging; the protection atmosphere environment; as this technology being used on a considerable number of non-electric-control diesel engine automobile of China; will bring higher economy and society benefit to country, particularly to advancing China to use the development and the protection environment of the light-duty vehicle of diesel engine to have crucial meaning.
Description of drawings
Fig. 1 is the utility model composition frame chart
Fig. 2 is the utility model EGR valve and EGR valve actuating mechanism schematic representation
Fig. 3 is another embodiment of the utility model EGR valve actuating mechanism
Embodiment
As shown in Figure 1, the utility model comprises the electronic control unit 3 of an EGR valve 1, one an EGR valve actuating mechanism 2 and an EGR valve actuating mechanism.
As described in Figure 2, EGR valve 1 of the present utility model comprises a valve body 11 and a valve rod 12, and valve body 11 is provided with an inlet hole 13, one exhaust ports 14, inlet hole 13 is connected with the outlet pipe 5 of motor 4 by pipeline 15, and exhaust port 14 is connected with the suction tude 6 of motor 4 by pipeline 16.Valve rod 12 is arranged in the valve body 11, the head of valve rod 12 is provided with a cone-shaped valve head 17, cooperate with cone-shaped valve head 17, the inlet hole 13 of valve body 11 is a cone shape hole, the folding size of cone-shaped valve head 17 and inlet hole 13 is by the determining positions that moves up and down of valve rod 12, simultaneously, what of ER EGR Rate are the folding size of cone-shaped valve head 17 and inlet hole 13 determined.
EGR valve actuating mechanism 2 comprises: a solenoid valve that is connected with vacuum source 21, one is arranged on the air outlet hole 18 on the valve body 11, one is connected the flexible sheet 22 of valve rod 12 afterbodys, an and Returnning spring 23 that is connected between valve body 11 tops and the flexible sheet 22, the other end of the pipeline 24 of connection air outlet hole 18 and the sucking pipe of vacuum source were located at valve 26 both sides of solenoid valve 21 in 25 minutes, in case the valve 26 of solenoid valve 21 is opened, pipeline 24 just can be communicated with sucking pipe 25 and vacuumizes, this moment, flexible sheet 22 following air pressure were lower than top air pressure, and upwards heave, and then drive valve rod 12 moves upward, valve head 17 separates with taper inlet hole 13, waste gas is drawn into valve body 11, and by the suction tude 6 that exhaust port 14 and pipeline 16 enter motor 4, enters cylinder with fresh air.
In the above-mentioned EGR valve actuating mechanism 2, can air outlet hole 14 and solenoid valve between pipeline 16 be provided with a pressure transducer 27, as the feedback signal extraction apparatus.
As shown in Figure 3, EGR valve actuating mechanism 2 can also be taked other mode of structure, such as: adopt straight-line stepper motor 28 to connect valve rod 12 afterbodys, drive the valve rod translation; Or adopt the stepper motor that rotates to connect one " angle/displacement " transducer again, the output terminal of transducer is connected with the afterbody of valve rod 12, rotation by the control step motor, drive moving of valve rod 12, and then drive valve head 17 separates with taper inlet hole 13, make waste gas be drawn into valve body 11, and, enter cylinder with fresh air by the suction tude 6 that exhaust port 14 and pipeline 16 enter motor 4.
In the above-mentioned EGR valve actuating mechanism 2, can a deviation meter 29 be set as the feedback signal extraction apparatus between valve rod 12 and transducer 28, whether the combustion condition of measuring motor at any time is to be in the optimum state.
As shown in Figure 1, the electronic control unit 3 of EGR valve actuating mechanism comprises a microprocessor 31, prior optimum condition and adjusting programming input microprocessor 31 with motor, and with the coolant temperature signal 32 of engine system, speed regulator handle position signal 33, engine rotational speed signal 34 and feedback signal 35 grades measured from EGR valve feedback signal extraction apparatus are input microprocessor 31 at any time, compare and regulate with optimum condition, the output terminal of microprocessor 31 connects the input end of EGR valve actuating mechanism 2, to drive the keying degree of EGR valve 1, ER EGR Rate what are controlled.
Claims (7)
1, a kind of non-electric-control diesel engine Exhaust gas recirculation device, it comprises:
One EGR valve body, it is provided with an inlet hole, an exhaust port, described inlet hole is connected with waste pipe by pipeline, and described exhaust port is connected with the suction tude of motor by pipeline;
One EGR valve valve rod, it is arranged in the described valve body, and the head of described valve rod is provided with a cone-shaped valve head, cooperates with described cone-shaped valve head, and the inlet hole of described valve body is a cone shape hole;
One EGR valve actuating mechanism, its output terminal connect described valve rod afterbody, are provided with a feedback signal extraction apparatus between described output terminal and described valve rod;
The electronic control unit of one EGR valve actuating mechanism, it comprises a microprocessor that joins with the various working condition signals of motor, the output terminal of described microprocessor is connected through the input end of one drive circuit with described EGR valve actuating mechanism.
2, non-electric-control diesel engine Exhaust gas recirculation device as claimed in claim 1, it is characterized in that: described EGR valve actuating mechanism comprises: a solenoid valve that is connected with vacuum source, one is arranged on the air outlet hole on the described valve body, one is connected the flexible sheet of described valve rod afterbody, an and Returnning spring that is connected between described valve body top and the described flexible sheet, connect the other end of pipeline of described air outlet hole and the sucking pipe branch of described vacuum source and be located at the valve both sides of described solenoid valve, in case open the two connection of valve.
3, non-electric-control diesel engine Exhaust gas recirculation device as claimed in claim 2 is characterized in that: described feedback signal extraction apparatus is one to be arranged on the pressure transducer on the pipeline between described air outlet hole and the described solenoid valve.
4, non-electric-control diesel engine Exhaust gas recirculation device as claimed in claim 1, it is characterized in that: described EGR valve actuating mechanism comprises: a stepper motor, the output terminal of described stepper motor is connected with described valve rod afterbody.
5, non-electric-control diesel engine Exhaust gas recirculation device as claimed in claim 4, it is characterized in that: described stepper motor is the straight line motion stepper motor.
6, non-electric-control diesel engine Exhaust gas recirculation device as claimed in claim 4 is characterized in that: described stepper motor is that a stepper motor connects one " angle/displacement " transducer.
7, as claim 4 or 5 or 6 described non-electric-control diesel engine Exhaust gas recirculation device, it is characterized in that: described feedback signal extraction apparatus is one to be arranged on the deviation meter between described valve rod and the described transducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03208784 CN2656648Y (en) | 2003-09-04 | 2003-09-04 | Waste gas recirculating device for non-electric controlled diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03208784 CN2656648Y (en) | 2003-09-04 | 2003-09-04 | Waste gas recirculating device for non-electric controlled diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2656648Y true CN2656648Y (en) | 2004-11-17 |
Family
ID=34324899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03208784 Expired - Fee Related CN2656648Y (en) | 2003-09-04 | 2003-09-04 | Waste gas recirculating device for non-electric controlled diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2656648Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102383902A (en) * | 2011-10-31 | 2012-03-21 | 武汉添蓝发动机排放控制技术有限公司 | Control and treatment method and system for emission of non-electric-control diesel engine |
| CN103397944A (en) * | 2013-08-15 | 2013-11-20 | 哈尔滨艾科维节能环保技术有限公司 | Digital EGR (Exhaust Gas Recirculation) device and control method thereof |
-
2003
- 2003-09-04 CN CN 03208784 patent/CN2656648Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102383902A (en) * | 2011-10-31 | 2012-03-21 | 武汉添蓝发动机排放控制技术有限公司 | Control and treatment method and system for emission of non-electric-control diesel engine |
| CN102383902B (en) * | 2011-10-31 | 2013-05-01 | 武汉添蓝发动机排放控制技术有限公司 | Control and treatment method and system for emission of non-electric-control diesel engine |
| CN103397944A (en) * | 2013-08-15 | 2013-11-20 | 哈尔滨艾科维节能环保技术有限公司 | Digital EGR (Exhaust Gas Recirculation) device and control method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100350141C (en) | IC engine which and be operated with choice of different fuels, especially for motor vehicle drive system | |
| CN103485890A (en) | Portable car engine decarburizing device and use method thereof | |
| CN2656648Y (en) | Waste gas recirculating device for non-electric controlled diesel engine | |
| CN1271326C (en) | Compression combustion oxygen engine with zero nitrogen oxide compounds exhaust | |
| CN107461284B (en) | A kind of EGR control system and automobile | |
| CN1093595C (en) | Control system of dual-fuel car for lower exhaustion | |
| CN201037438Y (en) | Electric control carburetor | |
| CN203499832U (en) | Vehicle exhaust gas recirculation electronic control device with gas inlet adjusting device | |
| CN207033614U (en) | A kind of engine and automobile that can control nitrogen oxygen content in air inlet | |
| CN2195460Y (en) | Intelligent, energy-saving purification controller | |
| CN103835841B (en) | EGR valve controls device and has its vehicle | |
| CN204610048U (en) | Electric EGR valve control gear | |
| CN203906127U (en) | Control device of motor of EGR (exhaust gas recycling) valve of diesel engine | |
| CN108757195B (en) | EGR rate control device based on worm and gear driving variable venturi tube and control method thereof | |
| CN1122756C (en) | High-safety oxygen-enriching device for air distribution of IC engine | |
| CN200978724Y (en) | Variable air-intake system of motorcycle engine | |
| CN2617937Y (en) | Engine cylinder head of motorcycle with assistant exhaust | |
| CN101033717A (en) | Device capable of obviously reducing pollution discharge and fuel-saving and matching with automobile engine | |
| CN2799875Y (en) | Natural gas dual-fuel automobile | |
| CN212958848U (en) | Fuel control system of biogas generator set | |
| CN2474743Y (en) | Internal combustion engine gas distribution safety aeration device | |
| CN2580127Y (en) | Engine air inlet vortex structure | |
| CN2361843Y (en) | Automatic air supply regulator of purifier | |
| CN203559983U (en) | Portable carbon removing device of automotive engine | |
| CN2918767Y (en) | Natural gas single fuel supercharging engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |