CN201090301Y - Gas recirculation system of after-cooling diesel engine - Google Patents
Gas recirculation system of after-cooling diesel engine Download PDFInfo
- Publication number
- CN201090301Y CN201090301Y CNU2007200447398U CN200720044739U CN201090301Y CN 201090301 Y CN201090301 Y CN 201090301Y CN U2007200447398 U CNU2007200447398 U CN U2007200447398U CN 200720044739 U CN200720044739 U CN 200720044739U CN 201090301 Y CN201090301 Y CN 201090301Y
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- China
- Prior art keywords
- exhaust gas
- gas recirculation
- diesel engine
- valve
- control unit
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Exhaust-Gas Circulating Devices (AREA)
Abstract
The utility model relates to an exhaust gas recirculation system of turbocharged and intercooled diesel engine, wherein an exhaust gas re-circulation system is added on the turbocharged and intercooled diesel engine. The utility model comprises an exhaust gas recirculation valve, an electromagnetic valve and an exhaust gas central controller, the exhaust gas recirculation valve is connected on the bypass tube for communicating the exhaust gas tube and the gas inlet tube, the control end of the exhaust gas recirculation valve is connected with the output end of the electromagnetic valve, the vacuum control end of the electromagnetic valve is connected with a first tube foot of the exhaust gas recirculation central controller, the second tube foot of the exhaust gas recirculation central controller is connected with a lift-range sensor on the exhaust gas recirculation valve. The utility model has the advantages of simple structure and good effect, the utility model can meet the emission requirement of 2.8L EURO II, thereby having a certain popularization performance.
Description
Technical field
The utility model relates to the gas recirculation system of turbocharged and intercooled diesel engine.
Background technique
The effect of exhaust gas recirculation (EGR) system is the method that makes waste gas reenter the firing chamber and burn once more with fresh air, is a kind of measure of effective reduction discharging.The above diesel engine of Europe III discharging in the market just is with exhaust gas recirculation (EGR) system (band EGR cooling), and the diesel engine of Europe II discharging generally is not with exhaust gas recirculation (EGR) system.
Summary of the invention
The purpose of this utility model is: in order to make protection environment theme that engine emission and modern society advocate to consistent, the Abgasgesetz of simultaneously stricter satisfied country provides a kind of gas recirculation system that is applicable to the turbocharged and intercooled diesel engine of Europe II discharging.
Concrete architecture advances scheme is as follows:
The gas recirculation system of turbocharged and intercooled diesel engine comprises exhaust gas recirculation valve, solenoid valve and exhaust gas recirculation central control unit;
Described exhaust gas recirculation valve is a mechanical valve, which is provided with lift range sensor;
Exhaust gas recirculation valve is connected on the bypass tube that is communicated with Diesel Engine Exhaust Pipe and suction tude, the control end of exhaust gas recirculation valve is connecting the output terminal of solenoid valve, the output terminal of solenoid valve is connecting vacuum source, the vacuum control end of solenoid valve is connecting first pin of exhaust gas recirculation central control unit, second pin of exhaust gas recirculation central control unit is connecting the lift range sensor on the exhaust gas recirculation valve, the three-prong of exhaust gas recirculation central control unit is connecting the fault locator of diesel engine, the 4th pin of exhaust gas recirculation central control unit is connecting the cooling-water temperature sensor of diesel engine, the 5th pin of exhaust gas recirculation central control unit is connecting the throttle sensor of diesel engine, and the 6th pin of exhaust gas recirculation central control unit is connecting the speed probe of diesel engine.
Wherein the effect of exhaust gas recirculation valve is to make a certain amount of waste gas flow into intake manifold to carry out recirculation, and the effect of solenoid valve is that control is added in vacuum or the air pressure in the close chamber of exhaust gas recirculation valve.
The effect of gas recirculation system is the method that makes waste gas reenter the firing chamber and burn once more with fresh air, is the measure of a kind of effective reduction discharging (especially oxynitrides).Because the condition that NOx produces has two: the one, high temperature, the 2nd, polyoxy, waste gas after certain burning is entered cylinder combustion by control valve introducing suction tude and after live gas mixes, and this a part of inertia waste gas can slow down velocity of combustion, reduce maximum combustion temperature, plays the effect that reduces NOx.Main cause that oxynitrides can reduce that Here it is.In addition, improve ER EGR Rate total exhaust gas flow (mass flow) is reduced, so total pollutant output will reduce relatively in the toxic emission.The application of the utility model gas recirculation system (EGR) realizes easily, and motor is changed seldom, and technical requirements is not high, but it will cause the decline of dynamic economics, if mate the improper increase that also can cause CO, HC.The task of gas recirculation system (EGR) is exactly to make the recirculation volume of waste gas all reach optimum in each operation point in essence, thereby makes combustion process be in optimal situation all the time, guarantees that finally the pollution composition in the effulent is minimum.Because the change of amount of exhaust gas recirculation may produce diametrically opposite influence to different pollution compositions, therefore so-called optimum is a kind of often compromise, makes contaminants associated total discharging reach optimal scheme.The not all operating mode of gas recirculation system (EGR) is all worked as from the foregoing, but: 1. low speed, waste gas did not circulate when water temperature was lower than 20 ℃, prevented the generation of stall or over-emitting black exhaust phenomenon; 2. at a high speed, generally possessed the condition that produces NOx during middle load, exhaust gas recirculation valve is devoted oneself to work, the soiling value of control NOx discharging.
The utility model has increased exhaust gas recirculation (EGR) system on turbocharged and intercooled diesel engine, have certain increase on its cost, but it is simple in structure, and is effective, when satisfying arrangement space, satisfied the requirement of diesel engine Europe II, Europe III discharging; Has certain generalization.
Description of drawings
Fig. 1 is the utility model structural representation.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described by embodiment.
Embodiment:
Referring to Fig. 1, the gas recirculation system of turbocharged and intercooled diesel engine comprises exhaust gas recirculation valve 1, solenoid valve 2 and exhaust gas recirculation central control unit 3,
Exhaust gas recirculation valve 1 is a mechanical valve, and lift range sensor is installed on it;
Exhaust gas recirculation valve 1 is connected on the bypass tube 4 that is being communicated with Diesel Engine Exhaust Pipe and suction tude, the control end of exhaust gas recirculation valve 1 is connecting the output terminal of solenoid valve 2, the output terminal of solenoid valve 2 is connecting vacuum source 5, the vacuum control end of solenoid valve 2 is connecting the A pin of exhaust gas recirculation central control unit 3, the B pin of exhaust gas recirculation central control unit 3 is connecting the lift range sensor on the exhaust gas recirculation valve, the C pin of exhaust gas recirculation central control unit 3 is connecting the fault locator of diesel engine, the D pin of exhaust gas recirculation central control unit 3 is connecting the cooling-water temperature sensor of diesel engine, the E pin of exhaust gas recirculation central control unit 3 is connecting the throttle sensor of diesel engine, and the F pin of exhaust gas recirculation central control unit 3 is connecting the speed probe of diesel engine.
The effect of this exhaust gas recirculation valve is to make a certain amount of waste gas flow into intake manifold to carry out recirculation.One side of exhaust gas recirculation valve film connects a pivoting lever, opposite side link to each other with spring (spring make valve maintenance normally closed).Vacuum pressure on being added in diaphragm (or air pressure) is during greater than spring force, and pivoting lever is pulled away from original position, and passage is opened, and makes waste gas enter recirculating system.The exhausted air quantity of recirculation is directly related with air inflow.The exhaust gas recirculation valve assembly is integrated lift range sensor, this sensor utilize the potentiometer that is promoted by a plunger to transmit the actual lift signal of exhaust gas recirculation valve to exhaust gas recirculation central control unit 3.Exhaust gas recirculation central control unit 3 can judge in view of the above whether exhaust gas recirculation valve is in best lift amount and controls.
This solenoid valve is by exhaust gas recirculation central control unit 3 (ECU) control, and during the electromagnetic coil energising, valve open is so the passage between the porting is just connected.
Claims (1)
1. the gas recirculation system of turbocharged and intercooled diesel engine is characterized in that: comprise exhaust gas recirculation valve, solenoid valve and exhaust gas recirculation central control unit;
Described exhaust gas recirculation valve is a mechanical valve, which is provided with lift range sensor;
Exhaust gas recirculation valve is connected on the bypass tube that is communicated with Diesel Engine Exhaust Pipe and suction tude, the control end of exhaust gas recirculation valve is connecting the output terminal of solenoid valve, the output terminal of solenoid valve is connecting vacuum source, the vacuum control end of solenoid valve is connecting first pin of exhaust gas recirculation central control unit, second pin of exhaust gas recirculation central control unit is connecting the lift range sensor on the exhaust gas recirculation valve, the three-prong of exhaust gas recirculation central control unit is connecting the fault locator of diesel engine, the 4th pin of exhaust gas recirculation central control unit is connecting the cooling-water temperature sensor of diesel engine, the 5th pin of exhaust gas recirculation central control unit is connecting the throttle sensor of diesel engine, and the 6th pin of exhaust gas recirculation central control unit is connecting the speed probe of diesel engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200447398U CN201090301Y (en) | 2007-10-26 | 2007-10-26 | Gas recirculation system of after-cooling diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200447398U CN201090301Y (en) | 2007-10-26 | 2007-10-26 | Gas recirculation system of after-cooling diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201090301Y true CN201090301Y (en) | 2008-07-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200447398U Expired - Lifetime CN201090301Y (en) | 2007-10-26 | 2007-10-26 | Gas recirculation system of after-cooling diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201090301Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102575622A (en) * | 2009-09-24 | 2012-07-11 | 标致·雪铁龙汽车公司 | Method for controlling a pneumatic control device for an internal combustion engine, and engine enabling the implementation of said method |
| CN110145417A (en) * | 2019-06-28 | 2019-08-20 | 潍柴动力股份有限公司 | It is a kind of for promoting the pressurizing device of EGR rate |
-
2007
- 2007-10-26 CN CNU2007200447398U patent/CN201090301Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102575622A (en) * | 2009-09-24 | 2012-07-11 | 标致·雪铁龙汽车公司 | Method for controlling a pneumatic control device for an internal combustion engine, and engine enabling the implementation of said method |
| CN110145417A (en) * | 2019-06-28 | 2019-08-20 | 潍柴动力股份有限公司 | It is a kind of for promoting the pressurizing device of EGR rate |
| CN110145417B (en) * | 2019-06-28 | 2023-12-15 | 潍柴动力股份有限公司 | Pressurizing device for improving EGR rate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Patentee after: Anhui Jianghuai Automobile Group Limited by Share Ltd Address before: Hefei City, Anhui Province, 230022 East Road No. 176 Patentee before: Anhui Jianghuai Automotive Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080723 |