CN216617703U - Exhaust gas recirculation pressurization control system - Google Patents
Exhaust gas recirculation pressurization control system Download PDFInfo
- Publication number
- CN216617703U CN216617703U CN202220983819.4U CN202220983819U CN216617703U CN 216617703 U CN216617703 U CN 216617703U CN 202220983819 U CN202220983819 U CN 202220983819U CN 216617703 U CN216617703 U CN 216617703U
- Authority
- CN
- China
- Prior art keywords
- pipe
- air inlet
- exhaust
- egr
- control system
- 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.)
- Active
Links
Images
Abstract
The utility model provides an exhaust gas recirculation pressure boost control system, relates to booster technical field, including engine and turbo charger, the engine is equipped with air intake manifold and exhaust manifold, and turbo charger's compressor end passes through the intercooler and connects air intake manifold, and exhaust manifold passes through the EGR three-way valve and connects turbo charger's turbine end and air intake manifold respectively. The utility model solves the problems that the transmission mechanism of the bypass valve is in clearance fit, the pressure before the vortex is higher, the air leakage phenomenon is accompanied, and the damage rate of the transmission mechanism of the bypass valve is higher due to more frequent use working conditions when the supercharger with the bypass structure in the prior art is used.
Description
Technical Field
The utility model relates to the technical field of superchargers, in particular to an exhaust gas recirculation supercharging control system.
Background
In the case of supercharged diesel engines, the exhaust gas bypass supercharger aims to avoid overspeed of the supercharger when the supercharger pressure is high, and the exhaust gas at the air inlet of the turbine needs to be bypassed, and the air intake quantity of the turbine needs to be reduced to reduce the rotating speed of the supercharger. When the engine is in different working conditions, the requirements on the supercharging pressure and the EGR rate of the supercharger are different. In these cases, the pressure requirements may vary differently, and therefore, a supercharger with an exhaust gas bypass mechanism is required, and the application range of the supercharger and the EGR (exhaust gas recirculation) with a fixed cross section cannot be enlarged due to the different requirements of the conventional supercharged diesel engine on the supercharging pressure and the EGR rate (the ratio of the amount of recirculated exhaust gas to the total amount of intake air sucked into the cylinder) under different working conditions.
The prior device gradually exposes the defects of the technology along with the use, and is mainly expressed in the following aspects:
first, when a supercharger with a bypass structure is used, the transmission mechanism of the bypass valve is in clearance fit, the vortex front pressure is high, the air leakage phenomenon is accompanied, and the damage rate of the transmission mechanism of the bypass valve is high due to frequent use working conditions.
And secondly, a transmission mechanism is added in the bypass valve, the cost of the supercharger is improved, and the efficiency of the supercharger is also reduced by forming the bypass hole on a smooth flow channel of the supercharger.
In view of the above, the prior art is obviously inconvenient and disadvantageous in practical use, and needs to be improved.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model solves the problems that the transmission mechanism of the bypass valve is in clearance fit, the pressure before the vortex is higher, the air leakage phenomenon is accompanied, and the damage rate of the transmission mechanism of the bypass valve is higher due to more frequent use working conditions when the supercharger with the bypass structure in the prior art is used.
In order to solve the above problems, the present invention provides the following technical solutions:
an exhaust gas recirculation supercharging control system comprises an engine and a turbocharger, wherein the engine is provided with an air inlet main pipe and an exhaust main pipe, the air compressor end of the turbocharger is connected with the air inlet main pipe through an intercooler, and the exhaust main pipe is respectively connected with the turbine end of the turbocharger and the air inlet main pipe through an EGR three-way valve;
an exhaust tail pipe is connected to an exhaust port at the turbine end and is connected with a post-treatment device;
an air inlet of the EGR three-way valve is communicated with the exhaust manifold through a first exhaust pipe;
a first valve port of the EGR three-way valve is connected with the exhaust tail pipe through a second exhaust pipe;
and a second valve gate of the EGR three-way valve is connected with the air inlet main pipe through a third exhaust pipe.
As an optimized scheme, an air inlet of the compressor end is connected with an air filter through a first air inlet pipe.
As an optimized scheme, an exhaust port at the compressor end is connected with an inlet of the intercooler through a second air inlet pipe.
As an optimized scheme, an outlet of the intercooler is communicated with the air inlet manifold through a third air inlet pipe.
As an optimized solution, the air inlet at the turbine end is communicated with the exhaust manifold.
Compared with the prior art, the utility model has the beneficial effects that:
by the scheme, the application of the exhaust gas bypass transmission mechanism can be reduced on the basis of one EGR three-way valve;
the clearance fit is reduced in the process of connecting the parts, so that the phenomenon of air leakage can be effectively prevented;
the cost of the supercharger is effectively reduced due to the reduction of the waste gas bypass transmission mechanism, and the efficiency of the supercharger body can be improved due to the smooth flow channel with the fixed cross section;
through the device, the requirements on the supercharging pressure and the EGR rate under different working conditions of the supercharged diesel engine are met, and the application range of the supercharger with the fixed cross section and the EGR is enlarged.
Drawings
In order to more clearly illustrate the detailed description of the utility model or the technical solutions in the prior art, the drawings used in the detailed description or the prior art description will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
FIG. 1 is a schematic structural diagram of the present invention.
In the figure: 1. an air cleaner; 2. a first intake pipe; 3. a compressor end; 4. a second intake pipe; 5. an intercooler; 6. a third intake pipe; 7. an intake manifold; 8. a third exhaust pipe; 9. an engine; 10. a second valve doorway; an EGR three-way valve; 12. a first valve port; 13. a second exhaust pipe; 14. a post-processing device; 15. a first exhaust pipe; 16. a tail pipe; 17. an exhaust manifold; 18. a turbine end; 19. a turbocharger.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1, the EGR supercharging control system includes an engine 9 and a turbocharger 19, the engine 9 is provided with an intake manifold 7 and an exhaust manifold 17, a compressor end 3 of the turbocharger 19 is connected to the intake manifold 7 via an intercooler 5, and the exhaust manifold 17 is connected to a turbine end 18 of the turbocharger 19 and the intake manifold 7 via an EGR three-way valve 11.
An air inlet of the compressor end 3 is connected with an air filter 1 through a first air inlet pipe 2.
An exhaust port of the compressor end 3 is connected with an inlet of an intercooler 5 through a second air inlet pipe 4.
The outlet of the intercooler 5 is communicated with an air inlet manifold 7 through a third air inlet pipe 6.
The inlet of the turbine end 18 communicates with the exhaust manifold 17.
An exhaust port at turbine end 18 is coupled to tailpipe 16, and tailpipe 16 is coupled to aftertreatment device 14.
The intake port of the EGR three-way valve 11 communicates with an exhaust manifold 17 through a first exhaust pipe 15.
The first valve port 12 of the EGR three-way valve 11 is connected to a tail pipe 16 via a second exhaust pipe 13.
The second valve gate 10 of the EGR three-way valve 11 is connected to the intake manifold 7 through the third exhaust pipe 8.
The working principle of the device is as follows:
by the aid of the device, the requirements of the supercharged diesel engine on supercharging pressure and EGR rate under different working conditions are met, the application range of the supercharger with a fixed cross section and EGR is enlarged, the cost of the supercharger is reduced, and the efficiency of the supercharger body is improved;
when the diesel engine needs small supercharging pressure and does not need EGR, a second valve port 10 and a first valve port 12 of an EGR three-way valve 11 are closed;
when the diesel engine needs to have high supercharging pressure and does not need EGR, in order to avoid overspeed of a turbocharger 19, a second valve port 10 of an EGR three-way valve 11 is closed, a first valve port 12 is opened, and the recirculated exhaust gas directly enters an exhaust tail pipe 16 through a second exhaust pipe 13 and enters the atmosphere through a post-treatment device 14;
when the diesel engine needs small supercharging pressure and needs EGR, a second valve port 10 of an EGR three-way valve 11 is opened, a first valve port 12 is closed, and the recirculated exhaust gas directly enters an air inlet manifold 7 through a third exhaust pipe 8 and is mixed with fresh air after an intercooler 5 to enter an engine cylinder;
when the diesel engine needs to have a high boost pressure and needs EGR, the second valve port 10 of the EGR three-way valve 11 is opened and the first valve port 12 is also opened in order to avoid overspeed of the turbocharger.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (3)
1. An exhaust gas recirculation boost control system characterized by: the engine is characterized by comprising an engine (9) and a turbocharger (19), wherein the engine (9) is provided with an air inlet main pipe (7) and an air outlet main pipe (17), a compressor end (3) of the turbocharger (19) is connected with the air inlet main pipe (7) through an intercooler (5), and the air outlet main pipe (17) is respectively connected with a turbine end (18) of the turbocharger (19) and the air inlet main pipe (7) through an EGR three-way valve (11);
an air inlet of the compressor end (3) is connected with an air filter (1) through a first air inlet pipe (2);
an exhaust port of the compressor end (3) is connected with an inlet of the intercooler (5) through a second air inlet pipe (4);
an exhaust outlet of the turbine end (18) is connected with a tail pipe (16), and the tail pipe (16) is connected with an aftertreatment device (14);
an air inlet of the EGR three-way valve (11) is communicated with the exhaust manifold (17) through a first exhaust pipe (15);
a first valve port (12) of the EGR three-way valve (11) is connected with the tail pipe (16) through a second exhaust pipe (13);
and a second valve door (10) of the EGR three-way valve (11) is connected with the air inlet main pipe (7) through a third exhaust pipe (8).
2. An egr boost control system according to claim 1, wherein: and an outlet of the intercooler (5) is communicated with the air inlet main pipe (7) through a third air inlet pipe (6).
3. An egr boost control system according to claim 1, wherein: the air inlet of the turbine end (18) is communicated with the exhaust manifold (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220983819.4U CN216617703U (en) | 2022-04-27 | 2022-04-27 | Exhaust gas recirculation pressurization control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220983819.4U CN216617703U (en) | 2022-04-27 | 2022-04-27 | Exhaust gas recirculation pressurization control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216617703U true CN216617703U (en) | 2022-05-27 |
Family
ID=81689976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220983819.4U Active CN216617703U (en) | 2022-04-27 | 2022-04-27 | Exhaust gas recirculation pressurization control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216617703U (en) |
-
2022
- 2022-04-27 CN CN202220983819.4U patent/CN216617703U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102425488B (en) | Adjustable two-stage supercharging sequential system applied to V-shaped diesel engine | |
| WO2019119783A1 (en) | Exhaust gas recirculation system for petrol engine, and control method thereof | |
| CN110566341B (en) | Control method of series-parallel electric supercharging system | |
| CN201486644U (en) | Air inlet system of turbocharged engine | |
| CN210343538U (en) | Medium-pressure exhaust gas recirculation system based on two-stage turbocharger | |
| CN216617703U (en) | Exhaust gas recirculation pressurization control system | |
| CN102400777B (en) | Single-vortex double-air compressor turbine pressurizing system with air escape valves | |
| CN210343537U (en) | High-pressure waste gas medium-pressure side introducing system based on two-stage turbocharger | |
| CN210343490U (en) | High-pressure exhaust gas low-pressure side introducing system based on two-stage turbocharger | |
| CN210343536U (en) | Medium-pressure exhaust gas low-pressure side introducing system based on two-stage turbocharger | |
| CN208380692U (en) | Dynamoelectric compressor and turbocharger tandem pressure charging system | |
| CN210087500U (en) | Low-pressure exhaust gas recirculation system | |
| CA3116795C (en) | Exhaust gas recirculation system and engine | |
| CN203081570U (en) | Pressurized diesel engine pressurizing system | |
| CN108757154A (en) | Dynamoelectric compressor and turbocharger tandem pressure charging system | |
| JPS6050980B2 (en) | Exhaust gas recirculation device for exhaust turbocharged engines | |
| CN104791146A (en) | Gas inlet and exhausting system of internal combustion engine | |
| CN112627996A (en) | Device for improving exhaust gas recirculation rate of supercharged diesel engine and control method thereof | |
| CN105464787A (en) | Composite sequential turbocharging structure for turbo-charged diesel engine and turbocharging method for composite sequential turbocharging structure | |
| CN201133283Y (en) | Device for improving internal-combustion engines air admittance | |
| CN213016541U (en) | Electronic supercharger type pipeline arrangement structure | |
| CN110145418A (en) | A kind of middle pressure gas recirculation system based on two-stage turbocharger | |
| CN213743667U (en) | Engine and sequential supercharging system thereof | |
| CN219910983U (en) | High-efficiency recycling type integrated gas mixing control system | |
| CN213331270U (en) | Turbocharger suitable for high-low pressure EGR system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |