CN201991646U - EGR (exhaust gas recirculation) control device in turbocharged diesel engine - Google Patents
EGR (exhaust gas recirculation) control device in turbocharged diesel engine Download PDFInfo
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- CN201991646U CN201991646U CN2011200908367U CN201120090836U CN201991646U CN 201991646 U CN201991646 U CN 201991646U CN 2011200908367 U CN2011200908367 U CN 2011200908367U CN 201120090836 U CN201120090836 U CN 201120090836U CN 201991646 U CN201991646 U CN 201991646U
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- egr
- diesel engine
- suction port
- housing
- air
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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
Abstract
The utility model provides an EGR (exhaust gas recirculation) control device in a turbocharged diesel engine, which belongs to the technical field of automobiles and solves technical problems that EGR rate is lower and incapable of meeting requirements of engines and the like when turbocharged diesel engines in the prior art are in low-speed and low-load states and the like. The engine comprises an EGR assembly and an intake manifold assembly which are integrated on a cylinder, the intake manifold assembly comprises an intake hole for leading air in and a return hole for leading waste gas in, the EGR assembly is connected with the return hole through a return pipe, the return pipe is provided with an EGR control valve, and a throttle valve capable of controlling air circulation quantity of the intake hole is arranged at the intake hole. The EGR control device is simple in structure. After the throttle valve is arranged at the intake hole as that of a gasoline engine, air circulation quantity is controlled quite effectively, and the problem about the EGR rate of the diesel engine in low-speed and low-load states is solved. Moreover, the intake hole which is circular is quite simple in processing, can be firmly connected with a casing in a threaded manner, and air leakage of the joint of the casing and the intake hole can be prevented by a sealing part arranged on the EGR control device.
Description
Technical field
The utility model belongs to automobile technical field, relates to a kind of turbocharging type diesel engine, the EGR control gear in particularly a kind of turbocharging type diesel engine.
Background technique
Diesel engine is an internal-combustion engine of making fuel with diesel oil.Diesel engine belongs to compression ignition engine, and it often is called as diesel engine with main inventor Diesel's name again.Diesel engine sucks the air in the cylinder of diesel engine in when work, because of the motion of piston is subjected to the compression of higher degree, reaches 500～700 ℃ high temperature.Then fuel oil is sprayed in the high temperature air with vaporific, mix forming inflammable mixture with high temperature air, automatic fire burns.The energy that discharges in the burning promotes piston and is converted to the mechanical work of rotation by connecting rod and bent axle on piston-top surface.
The air inlet side is isolated and imported to exhaust gas recirculatioon (EGR) will be discharged gas for automobile with compact internal combustion engine after burning a part makes its technology of burning once again (gimmick or method).Main purpose can improve the rate of fuel consumption rate when discharging the nitrogen oxide (NOx) in the gas and sharing sub load for reducing.The prefix " EGR " of getting its each English individual character is common name.
Yet the high performance turbine supercharged diesel engine is when low speed and load, even the EGR valve wide open also can't reach requirement at present.Reason just is, this moment, the waste gas discharge capacity of motor was little, and the intake manifold standard-sized sheet causes the air inlet amount big, makes EGR lead on the low side and can't satisfy the motor requirement.
Summary of the invention
The purpose of this utility model is the problems referred to above that exist at existing technology, and the EGR control gear in a kind of simple in structure, the turbocharging type diesel engine that can control the air inlet amount is provided.
The purpose of this utility model can realize by following technical proposal: the EGR control gear in a kind of turbocharging type diesel engine, motor comprises EGR assembly and the inlet manifold assembly that is integrated on the cylinder body, described inlet manifold assembly comprises suction port that feeds for air and the return-air mouth that feeds for waste gas, it is characterized in that, described EGR assembly links to each other with described return-air mouth by muffler, described muffler is provided with the EGR control valve, and described suction port place is provided with the throttle body that can control this place's rate of air circulation.
The working principle of this device is as follows: during diesel engine work, part waste gas arrives inlet manifold assembly by the EGR assembly through muffler, air mixing in the waste gas of this part and the inlet manifold assembly, participate in the thermal cycle in the cylinder once more, reduce the nitrogen oxides mixture in the exhaust in this way.When the diesel engine low speed and load is worked, at this moment the waste gas discharge capacity is few, by regulating the EGR control valve exhaust flow flux is increased, by regulating throttle body the suction port sectional area of inlet manifold assembly is reduced simultaneously, reduce the discharge value of air, the waste gas and the air mixing rate that enter in the intake manifold are remained in the pre-set interval.This apparatus structure is simple, and after suction port was provided with throttle body as petrol engine, the very effective discharge value of controlling air had solved the problem that the EGR of diesel engine under low speed and load leads.
In the EGR control gear in above-mentioned a kind of turbocharging type diesel engine, described throttle body comprises that an end is socketed in the housing on the described suction port, described housing is provided with the inner chamber that runs through two ends, also be provided with two ends in the described housing and be hinged on valve block on this housing madial wall, and when described valve block rotates, can change the sectional area of the inner chamber of described housing.It is fairly simple that valve structure is set in housing, and cost is low.
In the EGR control gear in above-mentioned a kind of turbocharging type diesel engine, described valve block links to each other with an electrodeless motor, and described electrodeless motor can drive this valve block and rotate, and the control system of described electrodeless motor and automobile links to each other.When the function of diesel engine changes, to control electrodeless motor by control system and rotate, electrodeless driven by motor valve block rotates, thereby changes the sectional area of the inner chamber of housing, influences the rate of air circulation of suction port.
In the EGR control gear in above-mentioned a kind of turbocharging type diesel engine, described suction port is rounded, and an end of described housing is screwed onto on this suction port, and is provided with Sealing between the two.The rounded processing technology of suction port is fairly simple, be spirally connected the back both be connected firmly, be provided with and prevent housing and the gas leakage of suction port joint behind the Sealing.
Compared with prior art, this apparatus structure is simple, and after suction port was provided with throttle body as petrol engine, the very effective discharge value of controlling air had solved the problem that the EGR of diesel engine under low speed and load leads.The rounded processing technology of suction port is fairly simple, suction port and housing be spirally connected the back both be connected firmly, be provided with and prevent housing and the gas leakage of suction port joint behind the Sealing.
Description of drawings
Fig. 1 is the EGR control gear structural representation front view in this turbocharging type diesel engine.
Fig. 2 is the EGR control gear structural representation worm's eye view in this turbocharging type diesel engine.
Among the figure, 1, cylinder body; 2, EGR assembly; 3, inlet manifold assembly; 4, muffler; 5, EGR control valve; 6, suction port; 7, return-air mouth; 8, throttle body; 9, motor; 10, housing; 11, valve block.
Embodiment
Below be specific embodiment of the utility model and in conjunction with the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
As depicted in figs. 1 and 2, EGR control gear in this turbocharging type diesel engine, motor comprises EGR assembly 2 and the inlet manifold assembly 3 that is integrated on the cylinder body 1, and inlet manifold assembly 3 comprises suction port 6 that feeds for air and the return-air mouth 7 that feeds for waste gas.
The working principle of this device is as follows: during diesel engine work, part waste gas arrives inlet manifold assembly 3 by EGR assembly 2 through muffler 4, air mixing in the waste gas of this part and the inlet manifold assembly 3, participate in the thermal cycle in the cylinder once more, reduce the nitrogen oxides mixture in the exhaust in this way.When the diesel engine low speed and load is worked, at this moment the waste gas discharge capacity is few, by regulating EGR control valve 5 the exhaust flow flux is increased, by regulating throttle body 8 suction port 6 sectional areas of inlet manifold assembly 3 are reduced simultaneously, reduce the discharge value of air, the waste gas and the air mixing rate that enter in the intake manifold are remained in the pre-set interval.This apparatus structure is simple, and after suction port 6 was provided with throttle body 8 as petrol engine, the very effective discharge value of controlling air had solved the problem that the EGR of diesel engine under low speed and load leads.
Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Claims (4)
1. the EGR control gear in the turbocharging type diesel engine, motor comprises EGR assembly (2) and the inlet manifold assembly (3) that is integrated on the cylinder body (1), described inlet manifold assembly (3) comprises suction port (6) that feeds for air and the return-air mouth (7) that feeds for waste gas, it is characterized in that, described EGR assembly (2) links to each other with described return-air mouth (7) by muffler (4), described muffler (4) is provided with EGR control valve (5), and described suction port (6) locates to be provided with the throttle body (8) that can control this place's rate of air circulation.
2. the EGR control gear in a kind of turbocharging type diesel engine according to claim 1, it is characterized in that, described throttle body (8) comprises that an end is socketed in the housing (10) on the described suction port (6), described housing (10) is provided with the inner chamber that runs through two ends, also be provided with two ends in the described housing (10) and be hinged on valve block (11) on this housing (10) madial wall, and when described valve block (11) rotates, can change the sectional area of the inner chamber of described housing (10).
3. the EGR control gear in a kind of turbocharging type diesel engine according to claim 2, it is characterized in that, described valve block (11) links to each other with an electrodeless motor (9), described electrodeless motor (9) can drive this valve block (11) and rotate, and the control system of described electrodeless motor (9) and automobile links to each other.
4. according to the EGR control gear in claim 2 or the 3 described a kind of turbocharging type diesel engine, it is characterized in that, described suction port (6) is rounded, and an end of described housing (10) is screwed onto on this suction port (6), and is provided with Sealing between the two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200908367U CN201991646U (en) | 2011-03-31 | 2011-03-31 | EGR (exhaust gas recirculation) control device in turbocharged diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200908367U CN201991646U (en) | 2011-03-31 | 2011-03-31 | EGR (exhaust gas recirculation) control device in turbocharged diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201991646U true CN201991646U (en) | 2011-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200908367U Expired - Lifetime CN201991646U (en) | 2011-03-31 | 2011-03-31 | EGR (exhaust gas recirculation) control device in turbocharged diesel engine |
Country Status (1)
| Country | Link |
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| CN (1) | CN201991646U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564434A (en) * | 2013-10-18 | 2015-04-29 | 中国重汽集团济南动力有限公司 | EGR (exhaust gas recirculation) engine assembly |
-
2011
- 2011-03-31 CN CN2011200908367U patent/CN201991646U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564434A (en) * | 2013-10-18 | 2015-04-29 | 中国重汽集团济南动力有限公司 | EGR (exhaust gas recirculation) engine assembly |
| CN104564434B (en) * | 2013-10-18 | 2018-05-01 | 中国重汽集团济南动力有限公司 | A kind of EGR engine assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Zhejiang Geely Luoyou Engine Co., Ltd. Assignor: Zhejiang Geely Automobile Research Institute Co., Ltd., Zhejiang Geely Holding Group Company Limited Contract record no.: 2013330000312 Denomination of utility model: EGR (exhaust gas recirculation) control device in turbocharged diesel engine Granted publication date: 20110928 License type: Exclusive License Record date: 20131011 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110928 |