CN202946266U - Gas mixer for internal combustion engine - Google Patents
Gas mixer for internal combustion engine Download PDFInfo
- Publication number
- CN202946266U CN202946266U CN2012205569871U CN201220556987U CN202946266U CN 202946266 U CN202946266 U CN 202946266U CN 2012205569871 U CN2012205569871 U CN 2012205569871U CN 201220556987 U CN201220556987 U CN 201220556987U CN 202946266 U CN202946266 U CN 202946266U
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- CN
- China
- Prior art keywords
- mixer
- egr
- gas
- cavity
- pneumatic tube
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- 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
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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 discloses a gas mixer for an internal combustion engine. The gas mixer for the internal combustion engine comprises a mixer gas pipe, wherein the cavity in the mixer gas pipe is a central cavity. One end of the mixer gas pipe is a fresh air input end, the other end of the mixer gas pipe is a mixed gas output end, an exhaust gas recirculation (EGR) mixer shell is sleeved outside the mixer gas pipe, both ends of the EGR mixer shell and the external shell of the mixer gas pipe are sealed, the cavity in the EGR mixer shell is a circumferential cavity, a pipeline extends from the side wall of the EGR mixer shell outwardly, a recirculation exhaust gas inlet is arranged on the end portion of the pipeline, a plurality of recirculation exhaust gas orifices are arranged on the side wall of the mixer gas pipe, and the recirculation exhaust gas orifices ensure that the circumferential cavity is communicated with the central cavity. According to the gas mixer for the internal combustion engine, the recirculation exhaust gas introduced from the exhaust end of the engine is uniformly mixed with fresh air, so that the EGR rates of the cylinders of the engine are consistent, the difference of the cylinders in the operating process is reduced or avoided, and the operating requirement of stability can be met.
Description
Technical field
The utility model relates to a kind of gas mixer for internal-combustion engine.
Background technique
Along with Abgasgesetz increasingly strictly reach the soaring of fuel price, can reduce oil consumption and reduce the application of EGR technology on motor of discharging more and more extensive.EGR gas (EGR) had long pipeline to mix with fresh air before entering cylinder in the past, and the cycle gas amount (EGR leads) of introducing is lower, and there is no specialized designs EGR mixer.
Along with improvement and the maturation of EGR technology, cycle gas amount (EGR leads) is increasing, and the motor compactedness requires to make air inlet pipeline shorter simultaneously, and EGR gas (EGR) can not satisfy the requirement of motor stable operation with the mixing uniformity of fresh air.
The model utility content
Technical problem to be solved in the utility model is to provide a kind of gas mixer for internal-combustion engine for problems of the prior art, not its objective is and must increase the gas handling system length of pipe, waste gas is evenly mixed before entering cylinder fully with fresh air, thereby satisfy the requirement of motor stable operation.
The technical solution of the utility model is that the gas mixer that this kind is used for internal-combustion engine comprises the mixer pneumatic tube, and the cavity in the mixer pneumatic tube is center cavity, and an end of described mixer pneumatic tube is the fresh air input end, and the other end is the mixed gas output terminal; The outer cover of described mixer pneumatic tube is equipped with the EGR mixer case, and the sealing of the external casing of the two ends of EGR mixer case and mixer pneumatic tube; Cavity in described EGR mixer case is the circumference cavity, and the sidewall of EGR mixer case is outward extended with one section pipeline, and the end of pipeline is provided with the EGR gas entrance; And the sidewall of described mixer pneumatic tube is provided with several EGR gas spray orifices, and the EGR gas spray orifice guarantees that circumference cavity and center cavity are communicated with.
Described EGR gas spray orifice is evenly distributed with many rows along the outer wall of mixer pneumatic tube, and the horizontal spacing of adjacent two EGR gas spray orifices is identical with longitudinal pitch.
The gas mixer that this kind with said structure is used for internal-combustion engine has the following advantages:
1. this kind is used for the EGR gas that the gas mixer of internal-combustion engine introduced by the engine exhaust end and evenly mixes with fresh air, the EGR of each cylinder of motor is led consistent, reduces or avoid the difference of each cylinder in working procedure, satisfies its stable job requirement.
2. this kind does not need the extra EGR throttle valve body that increases for generation of degree of vacuum for the gas mixer of internal-combustion engine, reduces component number, and is simple in structure, compact, reasonable in design, reduces development cost.
Description of drawings
Below in conjunction with accompanying drawing, model utility is described further:
Fig. 1 is structural representation of the present utility model.
Fig. 2 is axial sectional structure schematic diagram of the present utility model.
In Fig. 1-2,1: the EGR gas entrance; 2: the fresh air input end; 3: the mixed gas output terminal; 4: the EGR gas spray orifice; 5: the circumference cavity; 6: center cavity; The 7:EGR mixer case; 8: the mixer pneumatic tube.
Embodiment
By the combination of structure shown in Fig. 1-2 as can be known, the gas mixer that this kind is used for internal-combustion engine comprises mixer pneumatic tube 8, cavity in mixer pneumatic tube 8 is center cavity 6, and an end of mixer pneumatic tube 8 is fresh air input end 2, and the other end is mixed gas output terminal 3; The outer cover of mixer pneumatic tube 8 is equipped with EGR mixer case 7, and the sealing of the external casing of the two ends of EGR mixer case 7 and mixer pneumatic tube 8; Cavity in EGR mixer case 7 is circumference cavity 5, and the sidewall of EGR mixer case 5 is outward extended with one section pipeline, and the end of pipeline is provided with EGR gas entrance 1; And the sidewall of mixer pneumatic tube 8 is provided with several EGR gas spray orifices 4, and EGR gas spray orifice 4 guarantees that circumference cavity 5 and center cavity 6 are communicated with.
EGR gas spray orifice 4 is evenly distributed with many rows along the outer wall of mixer pneumatic tube 8, and the horizontal spacing of adjacent two EGR gas spray orifices 4 is identical with longitudinal pitch.
The specific works process is: by the EGR gas of engine exhaust end introducing, enter circumference cavity 5 by EGR gas entrance 1 after cooler for recycled exhaust gas, enter center cavity 6 by the EGR gas spray orifice 4 on fresh air input end 2, thereby mix with the fresh air that is entered center cavity 6 by fresh air input end 2.Because two strands of air-flows radially reach mixed uniformly effect with axial speed difference.Simultaneously, fresh air is with certain flow velocity process mixer pneumatic tube 8, can be in the certain degree of vacuum of the interior formation of circumference cavity 5, namely when equating through the fresh pressure of the cooled exhaust gas pressure of cooler for recycled exhaust gas with the mixer pneumatic tube 8 of flowing through, when even lower slightly, waste gas also can enter mixer pneumatic tube 8 by EGR gas spray orifice 4 and evenly mixes with fresh air, thereby has reduced the risk that needs the extra EGR of installation throttle valve.The mixed gas that mixes enters EGR that cylinder guaranteed each cylinder of motor and leads and equate, avoided each cylinder because EGR leads the inconsistent oil consumption increase that causes and engine operation unstability.Reduce or avoid the difference of each cylinder in working procedure, satisfy its stable job requirement.
Claims (2)
1. be used for the gas mixer of internal-combustion engine, it is characterized in that: described gas mixer comprises mixer pneumatic tube (8), cavity in mixer pneumatic tube (8) is center cavity (6), one end of described mixer pneumatic tube (8) is fresh air input end (2), and the other end is mixed gas output terminal (3); The outer cover of described mixer pneumatic tube (8) is equipped with EGR mixer case (7), and the sealing of the external casing of the two ends of EGR mixer case (7) and mixer pneumatic tube (8); Cavity in described EGR mixer case (7) is circumference cavity (5), and the sidewall of EGR mixer case (7) is outward extended with one section pipeline, and the end of pipeline is provided with EGR gas entrance (1); And the sidewall of described mixer pneumatic tube (8) is provided with several EGR gas spray orifices (4), and EGR gas spray orifice (4) guarantees that circumference cavity (5) and center cavity (6) are communicated with.
2. the gas mixer for internal-combustion engine according to claim 1, it is characterized in that: described EGR gas spray orifice (4) is evenly distributed with many rows along the outer wall of mixer pneumatic tube (8), and the horizontal spacing of adjacent two EGR gas spray orifices (4) is identical with longitudinal pitch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205569871U CN202946266U (en) | 2012-10-27 | 2012-10-27 | Gas mixer for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205569871U CN202946266U (en) | 2012-10-27 | 2012-10-27 | Gas mixer for internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202946266U true CN202946266U (en) | 2013-05-22 |
Family
ID=48421974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012205569871U Expired - Fee Related CN202946266U (en) | 2012-10-27 | 2012-10-27 | Gas mixer for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202946266U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102926896A (en) * | 2012-10-27 | 2013-02-13 | 安徽誉丰汽车技术有限责任公司 | Gas mixer for internal combustion engine |
| CN104110331A (en) * | 2014-07-09 | 2014-10-22 | 昆明云内动力股份有限公司 | EGR exhaust gas evenly-mixing device of engine |
| CN104234876A (en) * | 2013-06-17 | 2014-12-24 | 卡特彼勒公司 | System and method for exhaust gas re-circulation |
-
2012
- 2012-10-27 CN CN2012205569871U patent/CN202946266U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102926896A (en) * | 2012-10-27 | 2013-02-13 | 安徽誉丰汽车技术有限责任公司 | Gas mixer for internal combustion engine |
| CN104234876A (en) * | 2013-06-17 | 2014-12-24 | 卡特彼勒公司 | System and method for exhaust gas re-circulation |
| CN104110331A (en) * | 2014-07-09 | 2014-10-22 | 昆明云内动力股份有限公司 | EGR exhaust gas evenly-mixing device of engine |
| CN104110331B (en) * | 2014-07-09 | 2016-10-05 | 昆明云内动力股份有限公司 | A kind of EGR exhaust uniform mixing device of electromotor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130522 Termination date: 20131027 |