CN210660368U - Supercharging device suitable for low-pressure EGR system and low-pressure EGR system - Google Patents
Supercharging device suitable for low-pressure EGR system and low-pressure EGR system Download PDFInfo
- Publication number
- CN210660368U CN210660368U CN201921301070.5U CN201921301070U CN210660368U CN 210660368 U CN210660368 U CN 210660368U CN 201921301070 U CN201921301070 U CN 201921301070U CN 210660368 U CN210660368 U CN 210660368U
- Authority
- CN
- China
- Prior art keywords
- supercharging device
- compressor
- egr
- low
- pressure egr
- 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
Landscapes
- Exhaust-Gas Circulating Devices (AREA)
- Supercharger (AREA)
Abstract
The utility model provides a supercharging device suitable for low pressure EGR system, supercharging device is connected with the air intake system who has EGR, air intake system be used for to supercharging device transmits the gas mixture that forms behind EGR waste gas and the fresh air mixture after the EGR cooler cooling, supercharging device includes the compressor and locates the separator of the air inlet department of compressor, and the gas mixture is in the warp after separator separates out liquid water, and surplus dry gas mixture continues to flow in the compressor carries out the pressure boost. The utility model discloses can make the compressor impeller avoid the impact and the corruption of liquid water to effectively solve the frozen problem that leads to the unable start-up of booster of severe cold district liquid water, extend severe cold district with the application range of low pressure EGR technique. The utility model discloses still relate to a low pressure EGR system.
Description
Technical Field
The utility model relates to the technical field of engines, especially, relate to a supercharging device and pressure boost method suitable for low pressure EGR system.
Background
Effective NO reduction using EGR (Chinese: Exhaust Gas Recirculation, English: Exhaust Gas Recirculation) technologyxThe emission is realized, and meanwhile, the oil consumption of the engine is effectively reduced, so that the method is one of the mainstream technologies of energy conservation and emission reduction at present. EGR engines with supercharging systems are mainly divided into two technologies, high-pressure EGR and low-pressure EGR. Compared with a high-pressure EGR technology, the low-pressure EGR can be applied to a wider range of test working conditions, but because the low-pressure EGR needs to be mixed with fresh air after being cooled and then enters the compressor for pressurization, the EGR waste gas is cooled for the second time, liquid water is separated out and continuously impacts the blades of the compressor, and corrosive substances in the EGR waste gas also provide new requirements for the anti-corrosion capability of the compressor; and in cold regions, the compressor is frozen due to the existence of liquid water, so that the application of the low-pressure EGR technology in the high-cold regions becomes difficult.
In the existing first technical solution: the low-pressure EGR function is closed in the alpine region, so that the application range of the low-pressure EGR technology is limited, and the technical advantages cannot be fully shown.
In the existing second technical solution: through complete machine rational arrangement, supercharging device is in the high position, and the slope arranges the EGR cooler, makes the liquid water backward flow that EGR waste gas produced after the EGR cooler cooling to set up the bleeder valve at the extremely low point of pipeline and emit, nevertheless receive the complete machine and arrange the restriction, the booster is arranged the high position and is more difficult usually, and the EGR pipeline need design an extremely low point to drain, can lengthen the pipeline and lead to the decline of engine transient response performance.
Disclosure of Invention
In view of the above, there is a need for a supercharging device suitable for a low-pressure EGR system that is not limited by the layout of the whole device and does not require special corrosion protection of the compressor.
The utility model provides a supercharging device suitable for low pressure EGR system, supercharging device is connected with the air intake system who has EGR, air intake system be used for to supercharging device transmits the gas mixture that forms behind EGR waste gas and the fresh air mixture after the EGR cooler cooling, supercharging device includes the compressor and locates the separator of the air inlet department of compressor, and the gas mixture process after separator separates out liquid water, flows in the inside pressure boost that carries out of compressor.
In a preferred embodiment, the separation device includes a hydrophilic molecular sieve structure and a collection chamber disposed outside the hydrophilic molecular sieve structure, and the collection chamber is used for collecting liquid water separated by the hydrophilic molecular sieve structure.
In a preferred embodiment, an air inlet of the air compressor is provided with a mounting part for mounting and accommodating the hydrophilic molecular sieve structure, the mounting part is hollow, and the collecting cavity is a space formed between the hydrophilic molecular sieve structure and the inner wall of the mounting part.
In a preferred embodiment, the mounting portion is an air inlet end portion of the compressor, or the mounting portion is a connecting piece arranged on the outer side of the air inlet end portion of the compressor.
In a preferred embodiment, the separation device further comprises a water drainage pipe communicated with the water outlet of the collection cavity, the water outlet of the collection cavity is located below the hydrophilic molecular sieve structure, and the water outlet of the water drainage pipe extends outwards to the outside of the compressor.
In a preferred embodiment, the hydrophilic molecular sieve structure is a helical structure.
In a preferred embodiment, the hydrophilic molecular sieve structure is formed by adhering a hydrophilic molecular sieve membrane to a spiral support.
In a preferred embodiment, the supercharging device is an engine supercharging system which comprises but is not limited to a turbocharger, a mechanical supercharger and an electronic supercharger, the turbocharger is a turbine and a compressor which are coaxially driven, and the turbine is positioned at the outlet of an exhaust passage of an engine and the inlet of a catalyst; and the mechanical supercharger and the electronic supercharger only comprise a gas compressor.
The utility model discloses still relate to a low pressure EGR system, including above be applicable to low pressure EGR system's supercharging device and the air pipeline of transmission fresh air and the EGR pipeline of transmission low pressure EGR waste gas, waste gas behind the engine catalyst converter by the EGR pipeline forms EGR waste gas after flowing into the EGR cooler cooling, EGR waste gas with fresh air in the air pipeline mixes reentrant supercharging device's compressor carries out the pressure boost.
To sum up, the utility model adds the separating device at the air inlet of the compressor in the supercharging device, so as to filter and collect all the liquid water contained in the cooled mixture of the low-pressure EGR and the fresh air through the separating device and discharge the liquid water out of the supercharging device, so that the impeller of the compressor is prevented from being impacted and corroded by the liquid water, the problem that the supercharger can not be started due to the icing of the liquid water in the alpine region is effectively solved, and the application range of the low-pressure EGR technology is expanded to the alpine region; make the utility model discloses arrange no special requirement to the engine complete machine, the EGR pipeline can shorten as far as possible, improves engine transient response performance.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following preferred embodiments are described in detail with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic diagram of one embodiment of a supercharging device suitable for use in a low pressure EGR system;
fig. 2 is a cross-sectional view of an embodiment of a supercharging device suitable for use in a low pressure EGR system.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the intended purpose of the invention, the present invention will be described in detail with reference to the accompanying drawings and preferred embodiments.
As shown in FIG. 1, the utility model provides a supercharging device suitable for low pressure EGR system, this supercharging device 10 intercommunication has the export of the air intake system pipeline of EGR to be used for transmitting the gas mixture that forms after EGR waste gas and the fresh air mixture after the EGR cooler cooling to supercharging device 10.
As shown in fig. 2, the supercharging device 10 includes a compressor 11 communicated with an outlet of a pipeline of an air intake system and a separation device 12 provided at an air inlet of the compressor 11. The utility model provides a supercharging device 10 arranges not special requirement to the engine complete machine, does not receive the complete machine to arrange the restriction, need not reset the pipeline so that set up the bleeder valve at the extreme low point and drain, so can effectively shorten EGR pipeline length, improves transient response performance.
Because separator 12 is built-in this supercharging device 10, the utility model provides a supercharging device 10's other parts need not change, can make the compressor impeller avoid the impact and the corruption of liquid water to effectively solve the freezing problem that leads to the unable start-up of booster of liquid water in alpine regions, extend the application range of low pressure EGR technique to alpine regions.
In a preferred embodiment provided by the present invention, the supercharging device 10 is suitable for all engine supercharging systems with a compressor 11, including but not limited to turbochargers, superchargers and electronic superchargers, and the turbine 17 of the turbocharger and the compressor 11 are coaxially driven, and the turbine 17 is located between the outlet of the engine exhaust passage and the inlet of the catalyst; whereas the superchargers and the electric superchargers only contain a compressor, i.e. the functioning of the supercharging device (with the compressor 11) and the EGR system is not affected even if parts of the turbine 17 in fig. 1 are removed (see also fig. 1).
Specifically, separator 12 locates compressor 11's entrance in supercharging device 10 to in the mixed gas of air intake system input at first gets into separator 12, the dry mixed gas that forms after separator 12 separates out liquid water, continue to flow into compressor 11 and carry out the pressure boost, the utility model discloses an improvement compressor 11 to be applicable to all supercharging device 10 that have this improvement compressor 11, before making the mixed gas pressurized, the liquid water in the mixed gas of effective filtration through refrigerated EGR waste gas and fresh air avoids liquid water to compressor 11's in supercharging device 10 impact and corruption, and effectively solved the easy problem that freezes of liquid water in alpine regions and lead to unable start-up of booster, expanded the application range of low pressure EGR technique in alpine regions, and need not carry out special anti-corrosion to the compressor and handle.
That is, the present invention designs a supercharging device 10 with a novel compressor 11, which is suitable for all engine supercharging systems with compressors (including but not limited to turbochargers, mechanical superchargers and electronic superchargers) to apply it to the engine working condition of low pressure EGR system; just the utility model discloses can be applicable to all engine operating modes, do not have the condition that liquid water appears, the utility model discloses still can regard as ordinary supercharging device 10 to play the pressure boost effect to admitting air.
Specifically, the separation device 12 arranged at the inlet of the supercharger compressor 11 comprises a hydrophilic molecular sieve structure 14 and a collection chamber 15, the hydrophilic molecular sieve structure 14 is a spiral structure, and the collection chamber 15 is used for collecting liquid water separated by the hydrophilic molecular sieve structure 14, the hydrophilic molecular sieve structure 14 capable of increasing the contact area with air intake so as to improve the efficiency of filtering the liquid water is arranged at the inlet of the supercharger compressor 11 of the supercharger 10, so that the mixed gas of cooled low-pressure EGR waste gas and fresh air enters the hydrophilic molecular sieve structure 14, liquid water in the mixed gas is separated and discharged through the collecting cavity 15, the dried mixed gas obtained after filtering enters the inside of the air compressor 11 and is pressurized by the impeller of the air compressor, at the moment, the blades of the air compressor are prevented from being impacted and eroded by water drops, the air compressor does not need to be subjected to special anti-corrosion treatment, and the service life of the pressurizing device 10 is prolonged.
In a preferred embodiment of the present invention, the hydrophilic molecular sieve structure 14 is formed by adhering a hydrophilic molecular sieve membrane to the spiral support, so as to ensure that liquid water molecules can be efficiently filtered.
In detail, as shown in fig. 2, in the utility model discloses in, the air inlet department of compressor 11 is including the installation department 13 of installation and holding hydrophilic molecular sieve structure 14, wherein installation department 13 is cavity, and collects the space that chamber 15 formed between the inner wall of hydrophilic molecular sieve structure 14 and installation department 13 hollow part, is convenient for hydrophilic molecular sieve structure 14 to collect after separating the liquid water in the gas mixture.
In one embodiment of the present invention, the mounting portion 13 is an air inlet end portion of the compressor 11, and correspondingly, the collecting cavity 15 is a space formed between the hydrophilic molecular sieve structure 14 and an air inlet inner wall (inner wall of the mounting portion 13) of the compressor 11.
In another embodiment provided by the present invention, the mounting portion 13 is a connecting member disposed outside the end portion of the air inlet of the compressor 11, wherein the mounting portion 13 is hollow, and correspondingly, the collecting chamber 15 is a space formed between the hydrophilic molecular sieve structure 14 and the inner wall of the hollow portion of the mounting portion 13; further, the mounting portion 13 is preferably a metal connecting member. For the manner of seamless connection between the mounting portion 13 and the air inlet of the compressor 11, reference may be made to the prior art, and details thereof are not described herein.
Further, the separation device 12 further comprises a water outlet pipe 16 communicated with the water outlet of the collection chamber 15 for discharging the separated liquid water, the water inlet of the water outlet pipe 16 is communicated with the water outlet of the collection chamber 15, and the water outlet of the collection chamber 15 is located below the hydrophilic molecular sieve structure 14, so that the collection chamber 15 can collect and discharge the liquid water in the gas mixture conveniently.
Furthermore, the water outlet of the water discharge pipe 16 extends outwards to the outside of the compressor 11, so that liquid water in the mixed gas is collected and stored by the collection cavity 15, and when the mixed gas is stored in a certain amount in the collection cavity 15, the water is drained out of the compressor 11 through the water discharge pipe 16 in time, impact and corrosion of the liquid water on the compressor 11 can be effectively avoided, special anti-corrosion treatment is not needed on the compressor 11, and the application range of the low-pressure EGR technology in high and cold areas is expanded.
The utility model discloses still relate to a low pressure EGR system, its include above be applicable to low pressure EGR system's supercharging device and the air pipeline of transmission fresh air and the EGR pipeline of transmission low pressure EGR waste gas, the waste gas behind the engine catalyst converter forms EGR waste gas by EGR pipeline inflow EGR cooler cooling back to with the fresh air mixture back in the air pipeline, reentrant supercharging device 10's compressor 11 carries out the pressure boost (focus refer to fig. 1).
Other relevant contents and technical features related to other relevant components and low-pressure EGR systems and engines can be found in the prior art, and are not described herein in detail.
To sum up, the utility model adds the separating device at the air inlet of the compressor in the supercharging device, so as to filter, collect and discharge the liquid water in the cooled mixture of low-pressure EGR and fresh air out of the supercharging device through the hydrophilic molecular sieve structure in the separating device, so that the impeller of the compressor is prevented from being impacted and corroded by the liquid water, the problem that the supercharger can not be started due to the icing of the liquid water in the alpine region is effectively solved, and the application range of the low-pressure EGR technology is expanded to the alpine region; and the supercharging device does not need special anti-corrosion treatment; the utility model discloses arrange no special requirement to the engine complete machine, the EGR pipeline can shorten as far as possible, has promoted the transient response performance of engine.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiments, and although the present invention has been disclosed with the preferred embodiments, it is not limited to the present invention, and any skilled person in the art can make some modifications or equivalent changes without departing from the technical scope of the present invention.
Claims (9)
1. The supercharging device is suitable for a low-pressure EGR system, the supercharging device (10) is connected with an air inlet system with EGR, the air inlet system is used for transmitting mixed gas formed by mixing EGR waste gas cooled by an EGR cooler and fresh air to the supercharging device (10), the supercharging device (10) is characterized by comprising a compressor (11) communicated with an outlet of the air inlet system and a separating device (12) arranged at an air inlet of the compressor (11), and the mixed gas flows into the compressor (11) for supercharging after liquid water is separated by the separating device (12).
2. Supercharging device suitable for low-pressure EGR systems according to claim 1, characterized in that the separation device (12) comprises a hydrophilic molecular sieve structure (14) and a collection chamber (15) arranged outside the hydrophilic molecular sieve structure (14), the collection chamber (15) being intended to collect liquid water separated by the hydrophilic molecular sieve structure (14).
3. The supercharging apparatus suitable for a low-pressure EGR system according to claim 2, wherein a mounting portion (13) for mounting and accommodating the hydrophilic molecular sieve structure (14) is provided at an air inlet of the compressor (11), the mounting portion (13) is hollow, and the collecting chamber (15) is a space formed between the hydrophilic molecular sieve structure (14) and an inner wall of the mounting portion (13).
4. Supercharging device suitable for low-pressure EGR systems according to claim 3, characterized in that the mounting portion (13) is an air inlet end of the compressor (11), or the mounting portion (13) is a connecting piece provided outside the air inlet end of the compressor (11).
5. Supercharging device suitable for low-pressure EGR systems according to claim 3, characterized in that the separation device (12) further comprises a drain (16) communicating with the outlet of the collection chamber (15), the outlet of the collection chamber (15) being located below the hydrophilic molecular sieve structure (14), and the outlet of the drain (16) extending outwards outside the compressor (11).
6. Supercharging device suitable for low-pressure EGR systems according to any of claims 2 to 5, characterized in that the hydrophilic molecular sieve structure (14) is a helical structure.
7. Supercharging device suitable for low-pressure EGR systems according to claim 6, characterized in that the hydrophilic molecular sieve structure (14) is formed by adhering a hydrophilic molecular sieve membrane to a helical support.
8. Supercharging device suitable for low-pressure EGR systems according to claim 1, characterized in that the supercharging device (10) is an engine supercharging system, the supercharging device (10) comprising turbochargers, superchargers and electronic superchargers.
9. A low-pressure EGR system comprising an air line for delivering fresh air and an EGR line for delivering exhaust gas for low-pressure EGR, and further comprising a supercharging device (10) according to any of claims 1 to 8, wherein the exhaust gas after passing through a catalyst of an engine flows into an EGR cooler through the EGR line to be cooled to form EGR exhaust gas, and the EGR exhaust gas is mixed with the fresh air in the air line and then enters a compressor (11) of the supercharging device (10) to be supercharged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921301070.5U CN210660368U (en) | 2019-08-09 | 2019-08-09 | Supercharging device suitable for low-pressure EGR system and low-pressure EGR system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921301070.5U CN210660368U (en) | 2019-08-09 | 2019-08-09 | Supercharging device suitable for low-pressure EGR system and low-pressure EGR system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210660368U true CN210660368U (en) | 2020-06-02 |
Family
ID=70841013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921301070.5U Active CN210660368U (en) | 2019-08-09 | 2019-08-09 | Supercharging device suitable for low-pressure EGR system and low-pressure EGR system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210660368U (en) |
-
2019
- 2019-08-09 CN CN201921301070.5U patent/CN210660368U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6748741B2 (en) | Charge air condensation collection system for engines with exhaust gas recirculation | |
| CN110219715A (en) | A kind of closed cycle respiratory system and automobile | |
| CN106246336B (en) | Engine and its gas handling system | |
| US9546569B2 (en) | Turbocharger with cooled turbine housing, cooled bearing housing, and a common coolant supply | |
| CN107939560B (en) | EGR cooler integrated with water removal device | |
| CN210660368U (en) | Supercharging device suitable for low-pressure EGR system and low-pressure EGR system | |
| CN201513259U (en) | Exhaust gas recirculation multi-loop device of series two-stage supercharged engine | |
| CN203098039U (en) | Two-stage turbocharger applicable to heavy-duty diesel engine | |
| CN112343741A (en) | Supercharging device suitable for low-pressure EGR system and low-pressure EGR system | |
| RU2727819C2 (en) | Working on exhaust gases turbosupercharger for vehicle, drive device with such turbosupercharger and vehicle | |
| CN216950612U (en) | Natural gas engine high-low pressure EGR waste gas management system | |
| CN213235270U (en) | Low-pressure exhaust gas recirculation system of turbocharged intercooled diesel engine | |
| CN211598787U (en) | Integrated respirator and engine | |
| CN212985336U (en) | Closed crankcase ventilation system and engine | |
| CN211598884U (en) | Module integrated type fuel prefilter assembly structure | |
| CN110454278B (en) | Air inlet system of rotary engine | |
| US20020127122A1 (en) | Compressor system for producing compressed air | |
| CN201335014Y (en) | Screw air compressor for electric motor coach | |
| CN217421345U (en) | Water-air intercooler for natural gas engine of heavy commercial vehicle | |
| CN220929542U (en) | Vehicle and exhaust gas recirculation system thereof | |
| CN202272722U (en) | Refrigerator set under-pressure filtering cleaning oiling machine | |
| CN113006918B (en) | Noise-reduction exhaust pipe assembly for automobile | |
| CN215927615U (en) | Air intake system, engine and vehicle | |
| CN219139369U (en) | Dry oil-free screw air compressor | |
| CN215520988U (en) | Two-stage supercharger system of V-shaped diesel engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |