CN203403946U - EGR waste gas cooling mechanism - Google Patents
EGR waste gas cooling mechanism Download PDFInfo
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- CN203403946U CN203403946U CN201320449977.2U CN201320449977U CN203403946U CN 203403946 U CN203403946 U CN 203403946U CN 201320449977 U CN201320449977 U CN 201320449977U CN 203403946 U CN203403946 U CN 203403946U
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- egr
- cooling
- waste gas
- cooling mechanism
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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 relates to an EGR waste gas cooling mechanism. The EGR waste gas cooling mechanism comprises an EGR channel arranged inside a cylinder cover and connected with an exhaust door and an EGR control valve, and further comprises a heat radiator arranged between the EGR channel and the EGR control valve and used for conducting cooling on the EGR waste gas. An exhaust port of the EGR channel is formed in one side, without an exhaust pipe, of the cylinder cover. The heat radiator is composed of a waste gas pipe and a cooling pipe arranged in the waste gas pipe in a sleeved mode, and is designed in an annular mode, and at least one air cooling device capable of carrying out cooling on the heat radiator is arranged on the periphery of the heat radiator. The EGR waste gas cooling mechanism has a water cooling mode and an air cooling mode, the cooling effect is guaranteed, and the problems that the temperature at one side, provided with the exhaust pipe, of the cylinder cover is high and parts cannot be arranged easily at the side are solved.
Description
Technical field
The utility model relates to and a kind of gas is carried out to cooling cooling mechanism, relates in particular to a kind of EGR waste gas cooling mechanism.
Background technique
EGR is EGR, that a part for engine discharging tail gas is taken out from outlet pipe, after cooling, turn back to again the gas handling system of motor, enter firing chamber to reduce combustion temperature together with virgin gas, reduce the method for the growing amount of NOx, it has positive effect ， auto manufacturing to obtain general promotion and application to improving motor vehicle exhaust emission.
Because the exhaust temperature of motor discharge is very high, need be cooled in certain limit, just can give full play to the effect of utilizing of EGR waste gas.In prior art, the cooling means of EGR waste gas all adopts independent water quench or air-cooled cooling, and adopts water quench to have cooling in cylinder cover water jacket and two kinds of modes of external cooler.
Chinese invention patent CN102893012A discloses a kind of cylinder head of the EGR of having gas cooling structure, described cylinder head is configured in EGR gas passageway in cylinder head jacket, carry out the cooling of EGR gas, described gas passageway consists of the hollow tubular with cooling part and high strength portion, and described cooling part contacts with cooling water in water jacket.
Chinese utility model patent CN201507368U discloses a kind of cooler for recycled exhaust gas, it comprises housing, suction chamber, discharge chamber, tracheae and water-cooling tube, EGR waste gas streams is through tracheae by carrying out heat exchange to reach cooling object with extratracheal cooling water, and this is also current the most general technological method.
Chinese invention patent CN102052124B discloses a kind of forced convection cooling system for recycled exhaust gas, the method makes EGR waste gas pass heat exchanger from gas exhaust manifold, and be attached to heat exchanger at least one blower fan convection current force stream of ambient air over-heat-exchanger, cooling so that EGR waste gas is carried out, the method also comprises the step that cooling EGR waste gas is sent to intake manifold.
In technique scheme, EGR gas passageway is configured in cylinder head jacket, and EGR gas only carries out cooling in water jacket, causes water jacket cooling load to strengthen, and can bring very large impact to the whole cooling effect of motor, has also increased the manufacture difficulty of cylinder head.Adopt external cooler for recycled exhaust gas, due to engine compartment spatial constraints, it is too large that cooler can not be done, thereby cause cooling effect can not guarantee to reach ideal effect, and the EGR gas inlet pipe of cooler connection cylinder cap outlet pipe, because delivery temperature is very high, cause outlet pipe one side temperature very high, this brings puzzlement to cooler layout undoubtedly, and the cooling water of cooler is generally taken from water jacket simultaneously, also can bring impact to the whole cooling effect of motor.Adopt separately air-cooled when cooling cooling effect be subject to the impact of ambient temperature, if want, increase the volume that cooling effect needs to increase heat exchanger, this is to be also difficult for implementing in the engine compartment of limited space.
Model utility content
For solving the deficiencies in the prior art, the utility model provides a kind of EGR waste gas cooling mechanism, and it can realize the effective cooling of EGR waste gas, also can avoid the Layout Problem of cooler simultaneously.
For achieving the above object, this cooling mechanism comprises the EGR passage that is arranged on connection exhaust valve in cylinder cap, and EGR control valve, also comprises being connected between EGR passage and EGR control valve EGR waste gas is carried out to cooling radiator; The relief opening of described EGR passage is arranged on the non-side with outlet pipe of cylinder cap.
As the restriction to aforesaid way, described EGR passage by cylinder cover water jacket cooling be arranged in cylinder cap.
As the restriction to aforesaid way, described EGR passage relief opening is arranged on cylinder cap suction tude side.
As the restriction to aforesaid way, described radiator consists of flue gas leading and the cooling tube being set in flue gas leading.
As the restriction to aforesaid way, described flue gas leading and cooling tube are designed to annular.
As the improvement to aforesaid way, flue gas leading end is provided with the sensor of measuring EGR exhaust gas temperature.
As the improvement to aforesaid way, on cooling tube, be provided with the valve that coolant rate to circulating in cooling tube carries out regulating and controlling.
As the restriction to aforesaid way, described EGR control valve is arranged on flue gas leading near suction tude one end.
As the restriction to aforesaid way, at radiator, around at least one is installed can carry out cooling air cooling equipment to radiator.
As the restriction to aforesaid way, described air cooling equipment is electric fan.
Adopt technique scheme, EGR waste gas without gas exhaust manifold and outside outlet pipe, directly enters radiator by EGR passage after exhaust valve is discharged, and can be tentatively cooling by cylinder cover water jacket; EGR waste gas can select one or jointly cooling by cooling water and fan in radiator, has guaranteed cooling effect, the cooling load problem of also having avoided the single type of cooling to bring; EGR passage relief opening is arranged in cylinder cap air inlet side simultaneously, has avoided cylinder cap relief opening high temperature to be difficult for carrying out the problem of component layout.
Accompanying drawing explanation
Below in conjunction with the drawings and the specific embodiments, the utility model is done further to describe in detail:
Fig. 1 is the utility model embodiment's structural representation;
In figure: 1, cylinder cap; 2, radiator; 3, exhaust valve; 4, intake valve; 5, EGR passage; 6, relief opening; 7, closure; 8, EGR control valve; 9, sensor; 10, cooling tube; 11, flue gas leading; 12, valve; 13, metallic conduit; 14, electric fan; 15, ECU assembly; 16, suction tude; 17, outlet pipe.
Embodiment
The present embodiment relates to a kind of EGR waste gas cooling mechanism, known as shown in Figure 1, it comprises the EGR passage 5 that is arranged on the interior connection exhaust valve 3 of cylinder cap 1, and EGR control valve 8 also comprises being connected between EGR passage 5 and EGR control valve 8 EGR waste gas is carried out to cooling radiator 2; The relief opening 6 of described EGR passage 5 is arranged on a non-side with outlet pipe 17 of cylinder cap 1, is chosen in suction tude 16 1 sides of cylinder cap 1 in the present embodiment, and its that so just avoided bringing due to outlet pipe 17 high temperature around component is difficult for the problem of arranging.EGR passage 5 can be arranged in cylinder cap 1 to water quench in cylinder cap 1 water jacket, to can carry out the EGR waste gas in EGR passage 5 tentatively cooling.
In use, when motor has just started, ECU assembly 15 control valves 12 are closed, through the EGR of preliminary cooling mistake waste gas, in radiator 2, without cooling tube 10 is cooling, directly by EGR control valve 8, enter suction tude 16, mix by closure 7 and enter intake valve 4 with virgin gas, improve intake temperature, when low-load, reached economical burning, be beneficial to discharge; When motor short circle, ECU assembly 15 control valves 12 are opened, and the cooling water in cooling tube 10 carries out cooling to the EGR waste gas in flue gas leading 11; When motor major cycle, ECU assembly 15 is controlled electric fan 14 runnings, by water-cooled and air-cooled jointly cooling, strengthens cooling effect.The EGR exhaust gas temperature that ECU assembly 15 detects according to sensor 9 regulates valve 12 apertures, can guarantee that cooled EGR waste gas is in suitable temperature range.
Claims (10)
1. an EGR waste gas cooling mechanism, comprises and is arranged on the EGR passage that connects exhaust valve in cylinder cap, and EGR control valve, is characterized in that: also comprise being connected between EGR passage and EGR control valve EGR waste gas is carried out to cooling radiator; The relief opening of described EGR passage is arranged on the non-side with outlet pipe of cylinder cap.
2. EGR waste gas cooling mechanism according to claim 1, is characterized in that: described EGR passage by cylinder cover water jacket cooling be arranged in cylinder cap.
3. EGR waste gas cooling mechanism according to claim 1, is characterized in that: described EGR passage relief opening is arranged on cylinder cap suction tude side.
4. EGR waste gas cooling mechanism according to claim 1, is characterized in that: described radiator consists of flue gas leading and the cooling tube being set in flue gas leading.
5. EGR waste gas cooling mechanism according to claim 4, is characterized in that: described flue gas leading and cooling tube are designed to annular.
6. EGR waste gas cooling mechanism according to claim 5, is characterized in that: the sensor of measuring EGR exhaust gas temperature is installed at flue gas leading end.
7. EGR waste gas cooling mechanism according to claim 6, is characterized in that: on cooling tube, be provided with the valve that coolant rate to circulating in cooling tube carries out regulating and controlling.
8. EGR waste gas cooling mechanism according to claim 4, is characterized in that: described EGR control valve is arranged on flue gas leading near suction tude one end.
9. EGR waste gas cooling mechanism according to claim 1, is characterized in that: at radiator, around at least one is installed can carry out cooling air cooling equipment to radiator.
10. EGR waste gas cooling mechanism according to claim 9, is characterized in that: described air cooling equipment is electric fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320449977.2U CN203403946U (en) | 2013-07-26 | 2013-07-26 | EGR waste gas cooling mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320449977.2U CN203403946U (en) | 2013-07-26 | 2013-07-26 | EGR waste gas cooling mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203403946U true CN203403946U (en) | 2014-01-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320449977.2U Expired - Fee Related CN203403946U (en) | 2013-07-26 | 2013-07-26 | EGR waste gas cooling mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203403946U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973259A (en) * | 2017-12-28 | 2019-07-05 | 株式会社久保田 | Engine with EGR |
-
2013
- 2013-07-26 CN CN201320449977.2U patent/CN203403946U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973259A (en) * | 2017-12-28 | 2019-07-05 | 株式会社久保田 | Engine with EGR |
| CN109973259B (en) * | 2017-12-28 | 2022-03-01 | 株式会社久保田 | Engine with EGR |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140122 Termination date: 20210726 |