CN109555622A - The exhaust pipe that big EGR rate can be achieved integrates EGR valve - Google Patents
The exhaust pipe that big EGR rate can be achieved integrates EGR valve Download PDFInfo
- Publication number
- CN109555622A CN109555622A CN201811440367.XA CN201811440367A CN109555622A CN 109555622 A CN109555622 A CN 109555622A CN 201811440367 A CN201811440367 A CN 201811440367A CN 109555622 A CN109555622 A CN 109555622A
- Authority
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- China
- Prior art keywords
- valve
- spool
- egr
- exhaust pipe
- big
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/65—Constructional details of EGR valves
- F02M26/70—Flap valves; Rotary valves; Sliding valves; Resilient valves
Abstract
The present invention relates to a kind of exhaust pipes that big EGR rate can be achieved to integrate EGR valve, it is characterized in that: including the exhaust manifold as valve seat, valve opening is processed on exhaust manifold, setting and valve opening valve deck in sealing contact on valve seat, spool is set in valve opening, spool can be rotated around the valve opening center on valve seat, and rotation is realized in the output end connection of spool and driving mechanism；The sealing element that EGR line can be sealed or be opened by setting in the side of the spool, sealing element are rotated with Spool rotating.The present invention, by reducing number of parts and Optimal Structure Designing, reduces the manufacturing cost and difficulty of processing of product while improving EGR valve control accuracy and response speed.
Description
Technical field
The present invention relates to a kind of exhaust pipes that big EGR rate can be achieved to integrate EGR valve, belongs to engines exhaust gas recirculation technology
Field.
Background technique
EGR, which has become, reduces engine NOxThe basic means of discharge, important component of the EGR valve as egr system, cloth
Can all system be had an important influence on by setting mode and response performance, so that with the increasingly stringent of emission regulation, the improvement of EGR valve
Seem especially urgent.
The method and the exhaust system on internal combustion engine that patent application CN104508284 A discloses a kind of processing exhaust
Mechanism.The patent mainly protects engine exhaust principle, does not protect the structure and principle of EGR valve itself.
The patent application US20110100001A1 of U.S. utility utility companies devises the butterfly valve of a egr system, butterfly
Valve includes the butterfly plate being located inside shell, and shell can be tied according to EGR line and the shape of cooler inlet
Structure design.Butterfly plate is connected with control stick, and the control stick of butterfly plate is extended to from one side and connecting rod, and as around behaviour
The rocker arm of vertical pole rotation.Executing agency pushes drive rod to move along a straight line along center line under the effect of the pressure, so as to root
The position of butterfly plate is adjusted according to the pressure being applied in executing agency.Wherein, executing agency is a vacuum executing agency；This
Egr system is conducive to the needs for meeting discharge, dynamic property and economy；Meanwhile also reducing the leakage of exhaust gas in engine cavity
Amount.
The butterfly valve of the patent application US20110100001A1 design of U.S. utility utility companies uses electrohydraulic actuator,
Although mentioning high control precision, still manufacturing cost and difficulty of processing are also big.
Current EGR valve largely uses butterfly valve structure, and the constitutional detail is more, and manufacture processing is complicated, and sealing effect is bad,
Inconvenience is integrated with exhaust pipe.
Summary of the invention
The purpose of the present invention is overcoming the deficiencies in the prior art, a kind of exhaust pipe that big EGR rate can be achieved is provided
Integrated EGR valve, is set while improving EGR valve control accuracy and response speed by reducing number of parts and structure optimization
Meter, reduces the manufacturing cost and difficulty of processing of product.
According to technical solution provided by the invention, the exhaust pipe that big EGR rate can be achieved integrates EGR valve, it is characterized in that:
Including the exhaust manifold as valve seat, valve opening is processed on exhaust manifold, setting and valve opening valve deck in sealing contact on valve seat,
Spool is set in valve opening, and spool can be rotated around the valve opening center on valve seat, and the output end of spool and driving mechanism connects
Connect realization rotation；The sealing element that EGR line can be sealed or be opened by setting in the side of the spool, sealing element are revolved with spool
Rotate into capable rotation.
Further, the sealing between the spool and valve deck uses flat seal.
Further, bushing is arranged in the lower end of the spool.
Further, the sealing element is using fan-shaped sealing element.
Further, support arm is arranged by fastening bolt in the upper end of the spool, and support arm and valve deck it
Between spool on elastic compression element is set, to compress valve deck and valve opening, realize sealing.
Further, the elastic compression element uses the spring being sheathed on spool,
Further, the driving mechanism uses pneumatic drive mechanism, motor-driven mechanism or hydraulic drive mechanism.
The exhaust pipe of the present invention that big EGR rate can be achieved integrates EGR valve, is improving EGR valve control accuracy and response
By reducing number of parts and Optimal Structure Designing while speed, the manufacturing cost and difficulty of processing of product are reduced.
Detailed description of the invention
Fig. 1 is the decomposition diagram that the exhaust pipe of the present invention that big EGR rate can be achieved integrates EGR valve.
Fig. 2-1 is the first cross-sectional view that the exhaust pipe of the present invention that big EGR rate can be achieved integrates EGR valve.
Fig. 2-2 is the second cross-sectional view that the exhaust pipe of the present invention that big EGR rate can be achieved integrates EGR valve.
Fig. 3 is the assembly figure that the exhaust pipe of the present invention that big EGR rate can be achieved integrates EGR valve.
Fig. 4 is the schematic diagram of the valve body.
Fig. 5 is schematic diagram when exhaust fully enters booster (EGR rate zero).
Fig. 6 is that discharge portion enters the schematic diagram that booster part enters EGR pipe (pilot process).
Fig. 7 is the schematic diagram that exhaust fully enters EGR pipe (EGR rate is maximum).
Sealing state schematic diagram of the Fig. 8 between EGR valve core and valve deck.
Description of symbols: 1- exhaust manifold, 2- spool, 3- fastening bolt, 4- support arm, 5- elastic compression element, 6-
Valve deck, 7- bushing, 8- sector sealing element.
Specific embodiment
Below with reference to specific attached drawing, the invention will be further described.
It includes the exhaust manifold 1 as valve seat that the exhaust pipe of the present invention that big EGR rate can be achieved, which integrates EGR valve, is being arranged
Valve opening is processed on gas manifold 1, valve deck 6 is set on valve seat, spool 2 is set in valve opening, bushing 7, valve is arranged in the lower end of spool 2
Core 2 can be rotated around the valve opening center on valve seat, and support arm 4 is arranged by fastening bolt in the upper end of spool 2, spool 2 with
The output end connection of driving mechanism enables support arm 4 to rotate around spool 2, and the spool 2 between support arm 4 and valve deck 6
Upper setting elastic compression element 5 realizes sealing to compress valve deck 6 and spool, and in the present embodiment, elastic compression element 5 uses
The spring being sheathed on spool 2；Above-mentioned driving mechanism can use pneumatic drive mechanism, motor-driven mechanism or hydraulic drive
Motivation structure；As shown in Fig. 1, Fig. 5-Fig. 7, fan-shaped sealing element 8 is set in the side of the spool 2, fan-shaped sealing element 8 is with spool 2
It is rotated, EGR line is sealed or opened certain channel by fan-shaped sealing element 8 in rotary course, logical by opening
The variation in road realizes that EGR rate is variable, and variation range reaches maximum, and may be implemented all to make the exhaust of some or certain cylinder
It is forced into gas handling system for EGR exhaust, avoids cannot be introduced into gas handling system greatly because of admission pressure.
As shown in figure 5, EGR line c is fully sealed spool 2, a is air inlet, and b is exhaust, and exhaust fully enters increasing at this time
When depressor (EGR rate zero).
As shown in fig. 6, spool 2 rotates counterclockwise certain angle, discharge portion enters booster, partially enters EGR at this time
Pipeline c is in pilot process.
As shown in fig. 7, spool 2 continues to rotate certain angle, exhaust at this time fully enters EGR line c, and EGR rate is maximum.
As shown in figure 8, the sealing between the spool and valve deck 6 uses flat seal.
The exhaust pipe of the present invention that big EGR rate can be achieved, which integrates EGR valve, can be applied to 6DM3 engine flat, can also
For other platforms；Valve body and exhaust manifold are become one, reduce processing casting difficulty, good manufacturability, spool with
The cooperation of valve body cylindrical surface, easy to process, gap is easy to control.EGR valve structure of the invention is simple, and part is few, at low cost, reliably
Property is good.
Claims (7)
1. a kind of exhaust pipe that big EGR rate can be achieved integrates EGR valve, it is characterized in that: include the exhaust manifold (1) as valve seat,
Valve opening is processed on exhaust manifold (1), setting and valve opening valve deck in sealing contact (6), are arranged spool in valve opening on valve seat
(2), spool (2) can be rotated around the valve opening center on valve seat, and spool (2) connect realization rotation with the output end of driving mechanism
Turn；The spool (2) side setting can will EGR line sealing or open sealing element, sealing element with Spool rotating into
Row rotation.
2. the exhaust pipe that big EGR rate can be achieved as described in claim 1 integrates EGR valve, it is characterized in that: the spool and valve deck
(6) sealing between uses flat seal.
3. the exhaust pipe that big EGR rate can be achieved as described in claim 1 integrates EGR valve, it is characterized in that: the spool (2)
Bushing (7) are arranged in lower end.
4. the exhaust pipe that big EGR rate can be achieved as described in claim 1 integrates EGR valve, it is characterized in that: the sealing element uses
Fan-shaped sealing element (8).
5. the exhaust pipe that big EGR rate can be achieved as described in claim 1 integrates EGR valve, it is characterized in that: in the spool (2)
Upper end support arm (4) are arranged by fastening bolt, and bullet is set on the spool (2) between support arm (4) and valve deck (6)
Property clamping element (5) to compress valve deck (6) and spool (2) realize sealing.
6. the exhaust pipe that big EGR rate can be achieved as claimed in claim 5 integrates EGR valve, it is characterized in that: the elastic compression is first
Part (5) is using the spring being sheathed on spool (2).
7. the exhaust pipe that big EGR rate can be achieved as described in claim 1 integrates EGR valve, it is characterized in that: the driving mechanism is adopted
With pneumatic drive mechanism, motor-driven mechanism or hydraulic drive mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811440367.XA CN109555622A (en) | 2018-11-29 | 2018-11-29 | The exhaust pipe that big EGR rate can be achieved integrates EGR valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811440367.XA CN109555622A (en) | 2018-11-29 | 2018-11-29 | The exhaust pipe that big EGR rate can be achieved integrates EGR valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109555622A true CN109555622A (en) | 2019-04-02 |
Family
ID=65867879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811440367.XA Pending CN109555622A (en) | 2018-11-29 | 2018-11-29 | The exhaust pipe that big EGR rate can be achieved integrates EGR valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109555622A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201574809U (en) * | 2009-11-03 | 2010-09-08 | 昆明云内动力股份有限公司 | Diesel engine exhaust pipe |
| CN103016215A (en) * | 2012-12-14 | 2013-04-03 | 宜宾天瑞达汽车零部件有限公司 | Rotary EGR (Exhaust Gas Recirculation) valve |
| CN203797045U (en) * | 2013-12-31 | 2014-08-27 | 超达阀门集团股份有限公司 | Y-type three-way ball valve |
| CN104508284A (en) * | 2012-08-01 | 2015-04-08 | 戴姆勒股份公司 | Method for treating exhaust gas and arrangement of an exhaust gas system on an internal combustion engine |
| CN104791148A (en) * | 2015-04-21 | 2015-07-22 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | Low-pressure EGR introduction device capable of realizing high EGR rate and low-pressure EGR introduction method |
-
2018
- 2018-11-29 CN CN201811440367.XA patent/CN109555622A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201574809U (en) * | 2009-11-03 | 2010-09-08 | 昆明云内动力股份有限公司 | Diesel engine exhaust pipe |
| CN104508284A (en) * | 2012-08-01 | 2015-04-08 | 戴姆勒股份公司 | Method for treating exhaust gas and arrangement of an exhaust gas system on an internal combustion engine |
| CN103016215A (en) * | 2012-12-14 | 2013-04-03 | 宜宾天瑞达汽车零部件有限公司 | Rotary EGR (Exhaust Gas Recirculation) valve |
| CN203797045U (en) * | 2013-12-31 | 2014-08-27 | 超达阀门集团股份有限公司 | Y-type three-way ball valve |
| CN104791148A (en) * | 2015-04-21 | 2015-07-22 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | Low-pressure EGR introduction device capable of realizing high EGR rate and low-pressure EGR introduction method |
Non-Patent Citations (1)
| Title |
|---|
| 机械工业部仪器仪表工业局: "《机械基础》", 31 December 1985, 机械工业出版社 * |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190402 |
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| RJ01 | Rejection of invention patent application after publication |