CN207892732U - Low pressure EGR apparatus and engine with the low pressure EGR apparatus - Google Patents
Low pressure EGR apparatus and engine with the low pressure EGR apparatus Download PDFInfo
- Publication number
- CN207892732U CN207892732U CN201721919704.4U CN201721919704U CN207892732U CN 207892732 U CN207892732 U CN 207892732U CN 201721919704 U CN201721919704 U CN 201721919704U CN 207892732 U CN207892732 U CN 207892732U
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- branch
- exhaust gas
- low pressure
- cooler
- pressure egr
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Abstract
The utility model provides a kind of low pressure EGR apparatus and the engine with the low pressure EGR apparatus, which includes cylinder, cooler for recycled exhaust gas, booster, charge air cooler, inlet manifold and the first branch between cooler for recycled exhaust gas and inlet manifold and the second branch；Cooler for recycled exhaust gas one end is connected to the exhaust pipe of cylinder, the other end is separately connected with the first branch and the second branch, booster and charge air cooler are set in the first branch, and cooler for recycled exhaust gas is connected to inlet manifold by the first branch or the second branch.In this low pressure EGR apparatus, exhaust gas can be by entering inlet manifold after the first branch or the second branch.When passing through the second branch, exhaust gas is can avoid by parts such as booster and charge air coolers, effectively reduces corrosion of the exhaust gas to booster and charge air cooler etc., inlet manifold is negative pressure simultaneously, intake and exhaust pressure difference is big, can more exhaust gas be introduced engine air in-cylinder combustion, further decrease oil consumption.
Description
Technical field
The utility model is related to engine EGR technical fields, more particularly to a kind of low pressure EGR apparatus and have the low pressure
The engine of EGR device.
Background technology
With control requirement fuel economy regulation plus that tight and environmental protection administration is to carbon emission, oil consumption is optional from one
Property ' Satisfaction Index, rise at regulation a compulsory index.Oil consumption is not only related to the satisfaction of client, Er Qiecong
Regulation level also will have a direct impact on the sale of vehicle, more directly influence the environment of the earth for the survival of mankind.
Currently, EGR has become an important technology direction for reducing oil consumption, it is divided into high pressure EGR and low pressure EGR,
Exhaust gas is taken before turbine, is then introduced into air inlet pipeline after supercharged, referred to as high pressure EGR；Exhaust gas is taken after turbine,
Then before being introduced into booster, referred to as low pressure EGR.For low pressure EGR, low pressure exhaust gas is to be introduced directly into the sky of engine
Then air cleaner passes sequentially through booster, air intake intercooler and throttle body.And exhaust gas is introduced directly into and starts by low pressure EGR
After machine air cleaner, since the admission pressure after air filter is close to environmental pressure, intake and exhaust pressure difference is big, so low pressure exhaust gas is followed again
The engine application condition range of loop system is very extensive, to the more effective fruit of the reduction of engine consumption.However, low pressure EGR
Exhaust gas can pass through air cleaner, booster, charge air cooler etc., can generate corrosion to these metal parts, and influence engine can
By property.
Utility model content
It is low with this that the purpose of this utility model is to provide a kind of low pressure EGR apparatus of avoidable exhaust gas corrosion parts
Press the engine of EGR device.
The utility model provides a kind of low pressure EGR apparatus, including cylinder, cooler for recycled exhaust gas, booster,
Charge air cooler and inlet manifold, the low pressure EGR apparatus further include being set to the cooler for recycled exhaust gas and the inlet manifold
Between the first branch and the second branch；Described cooler for recycled exhaust gas one end is connected to the exhaust of the cylinder
Pipe, the other end are separately connected with the first branch and the second branch, and the booster and the charge air cooler are set on described
In the first branch, the cooler for recycled exhaust gas and the inlet manifold pass through the first branch or the second branch
Connection.
In this low pressure EGR apparatus, cooler for recycled exhaust gas and inlet manifold can be connected to by the first branch, make exhaust gas from
The exhaust pipe of cylinder enters inlet manifold after coming out after cooler for recycled exhaust gas, booster and charge air cooler,
It can be connected to cooler for recycled exhaust gas and inlet manifold by the second branch, make exhaust gas after the exhaust pipe of cylinder comes out
Inlet manifold is directly entered after cooler for recycled exhaust gas.When passing through the second branch, it can avoid exhaust gas and pass through booster
With the parts such as charge air cooler, corrosion of the exhaust gas to booster and charge air cooler etc. is effectively reduced, while inlet manifold is negative pressure at this time,
Intake and exhaust pressure difference is big, can more exhaust gas be introduced engine air in-cylinder combustion, to further decrease oil consumption.
In a wherein embodiment, the low pressure EGR apparatus further include switch, it is described switch be connected to the first branch,
The junction of the second branch and the cooler for recycled exhaust gas is recycled with being connected to the first branch with the exhaust gas
Cooler or the second branch and the cooler for recycled exhaust gas.
In a wherein embodiment, the switch is triple valve.
In a wherein embodiment, the low pressure EGR apparatus further includes catalyst converter, and the catalyst converter is connected to the engine
Between the exhaust pipe of cylinder and the cooler for recycled exhaust gas.
In a wherein embodiment, the low pressure EGR apparatus further includes air cleaner, and the air cleaner is connected to institute
It states in the first branch.
In a wherein embodiment, the air cleaner is set between the switch and the booster.
In a wherein embodiment, the low pressure EGR apparatus further includes throttle body, and the throttle body is set to the air inlet
Between menifold and the charge air cooler.
A kind of engine, including above-mentioned low pressure EGR apparatus.
Description of the drawings
Fig. 1 is the structural schematic diagram of the low pressure EGR apparatus of one embodiment of the utility model.
Specific implementation mode
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.Below
Embodiment is not intended to limit the scope of the present invention for illustrating the utility model.
As shown in Figure 1, the low pressure EGR apparatus of one embodiment of the utility model includes cylinder 102, exhaust gas recycling
Cooler 104, booster 106, charge air cooler 108 and inlet manifold 110, low pressure EGR apparatus further include cold set on exhaust gas recycling
But the first branch 112 and the second branch 114 between device 104 and inlet manifold 110.104 one end of cooler for recycled exhaust gas connects
It is connected to the exhaust pipe of cylinder 102, the other end is separately connected with the first branch 112 and the second branch 114, booster 106
It is set in the first branch 112 with charge air cooler 108, cooler for recycled exhaust gas 104 and inlet manifold 110 pass through the first branch 112
Or the second branch 114 is connected to.
In this low pressure EGR apparatus, cooler for recycled exhaust gas 104 and inlet manifold can be connected to by the first branch 112
110, make exhaust gas from the exhaust pipe of cylinder 102 come out after by cooler for recycled exhaust gas 104, booster 106 and in
Enter inlet manifold 110 after cooler 108, also can be connected to cooler for recycled exhaust gas 104 and inlet manifold by the second branch 114
110, after cooler for recycled exhaust gas 104 it is directly entered air inlet after so that exhaust gas is come out from the exhaust pipe of cylinder 102
Menifold 110.When by the second branch 114, it can avoid exhaust gas and pass through the parts such as booster 106 and charge air cooler 108, effectively subtract
Few corrosion of the exhaust gas to booster 106 and charge air cooler 108 etc., while inlet manifold 110 is negative pressure at this time, intake and exhaust pressure difference is big,
More exhaust gas can be introduced engine air in-cylinder combustion, to further decrease oil consumption.
Specifically, when engine operates in sub-load, it is negative pressure that throttle body, which does not have standard-sized sheet, inlet manifold 110, is given up
Gas directly enters gas in-cylinder combustion through the second branch 114 through inlet manifold 110；When engine operates in big load, air throttle
Body standard-sized sheet, booster 106 are started to work, 110 pressure rise of inlet manifold, even higher than pressure at expulsion so that exhaust gas can not be through
The second branch 114 enters in cylinder, can only be via the first branch 112, by booster 106, charge air cooler 108 and inlet manifold 110
Afterwards, gas in-cylinder combustion is entered back into.Moreover, the operating condition of engine is largely partial load condition on vehicle, therefore big portion
Exhaust gas is passed through inlet manifold 110 in the case of point, avoids corroding booster 106 and charge air cooler 108 through the first branch 112.
In the present embodiment, low pressure EGR apparatus further includes switch 115, and switch 115 is connected to the first branch 112, the second branch
114 and cooler for recycled exhaust gas 104 junction, to be connected to the first branch 112 and cooler for recycled exhaust gas 104 or the second
Branch 114 and cooler for recycled exhaust gas 104, so that cooler for recycled exhaust gas 104 and inlet manifold 110 pass through the first branch
112 or the second branch 114 be connected to.Specifically, switch 115 is triple valve.
In the present embodiment, low pressure EGR apparatus further includes catalyst converter 116, and catalyst converter 116 is connected to cylinder 102
Between exhaust pipe and cooler for recycled exhaust gas 104, to improve discharge.
In the present embodiment, low pressure EGR apparatus further includes air cleaner 118, and air cleaner 118 is connected to the first branch
On 112, to filter air inlet.Specifically, air cleaner 118 is set between switch 115 and booster 106, in this way, exhaust gas is from hair
The exhaust pipe of motivation cylinder 102 reaches air cleaner 118, after then being mixed with fresh air, enters booster 106 together.
In the present embodiment, low pressure EGR apparatus further includes throttle body 120, and throttle body 120 is set to 110 He of inlet manifold
Between charge air cooler 108.
In the utility model, it is additionally arranged one and exhaust gas is passed directly into inlet manifold 110, exhaust gas is avoided to pass through booster
106, air intake intercooler 108 and throttle body 120 can avoid parts corrosion, and cylinder 102 is in sub-load work
When condition, 110 pressure of inlet manifold is negative pressure, and intake and exhaust pressure difference is big, and more exhaust gas can be introduced to the gas of cylinder 102
In cylinder, oil consumption is further decreased, cylinder 102 in high load working condition, start to work, inlet manifold 110 by booster 106
Pressure rise then can adjust waste gas flow direction by switch 115, exhaust gas is still passed through air cleaner 118 etc., and vehicle
Engine operating condition is largely partial load condition, is more suitable for exhaust gas being passed directly into inlet manifold 110.The utility model is only
The corruption reduced to parts such as boosters 106 is reached in the change that very little is only made by the structure to engine low pressure EGR apparatus
The remarkable result of erosion, and it is simple in structure, adaptability is very wide.
The utility model also provides a kind of engine with above-mentioned low pressure EGR apparatus.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without deviating from the technical principle of the utility model, several improvement and replacement can also be made, these change
The scope of protection of the utility model is also should be regarded as into replacement.
Claims (8)
1. a kind of low pressure EGR apparatus, which is characterized in that including cylinder (102), cooler for recycled exhaust gas (104), increase
Depressor (106), charge air cooler (108) and inlet manifold (110), the low pressure EGR apparatus further include being set to the exhaust gas to recycle
The first branch (112) between cooler (104) and the inlet manifold (110) and the second branch (114)；The exhaust gas follows again
Ring cooler (104) one end is connected to the exhaust pipe of the cylinder (102), the other end and the first branch (112)
It is separately connected with the second branch (114), the booster (106) and the charge air cooler (108) are set to the first branch
(112) on, the cooler for recycled exhaust gas (104) and the inlet manifold (110) by the first branch (112) or
The second branch (114) connection.
2. low pressure EGR apparatus as described in claim 1, which is characterized in that the low pressure EGR apparatus further includes switch (115),
The switch (115) is connected to the first branch (112), the second branch (114) and the cooler for recycled exhaust gas
(104) junction, to be connected to the first branch (112) and the cooler for recycled exhaust gas (104) or second described
Road (114) and the cooler for recycled exhaust gas (104).
3. low pressure EGR apparatus as claimed in claim 2, which is characterized in that the switch (115) is triple valve.
4. low pressure EGR apparatus as described in claim 1, which is characterized in that the low pressure EGR apparatus further includes catalyst converter
(116), the catalyst converter (116) is connected to the exhaust pipe of the cylinder (102) and the cooler for recycled exhaust gas
(104) between.
5. low pressure EGR apparatus as claimed in claim 2, which is characterized in that the low pressure EGR apparatus further includes air cleaner
(118), the air cleaner (118) is connected in the first branch (112).
6. low pressure EGR apparatus as claimed in claim 5, which is characterized in that the air cleaner (118) is set to the switch
(115) between the booster (106).
7. low pressure EGR apparatus as described in claim 1, which is characterized in that the low pressure EGR apparatus further includes throttle body
(120), the throttle body (120) is set between the inlet manifold (110) and the charge air cooler (108).
8. a kind of engine, which is characterized in that include the low pressure EGR apparatus as described in claim 1-7 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721919704.4U CN207892732U (en) | 2017-12-29 | 2017-12-29 | Low pressure EGR apparatus and engine with the low pressure EGR apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721919704.4U CN207892732U (en) | 2017-12-29 | 2017-12-29 | Low pressure EGR apparatus and engine with the low pressure EGR apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207892732U true CN207892732U (en) | 2018-09-21 |
Family
ID=63550679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721919704.4U Expired - Fee Related CN207892732U (en) | 2017-12-29 | 2017-12-29 | Low pressure EGR apparatus and engine with the low pressure EGR apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207892732U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111255596A (en) * | 2018-11-30 | 2020-06-09 | 长城汽车股份有限公司 | Engine assembly and vehicle with EGR system |
| CN114060183A (en) * | 2020-08-04 | 2022-02-18 | 深圳臻宇新能源动力科技有限公司 | Exhaust gas circulation system for vehicle, control method and vehicle |
| CN114991930A (en) * | 2022-06-07 | 2022-09-02 | 中国第一汽车股份有限公司 | Engine cooling and exhaust heat recovery system and car |
-
2017
- 2017-12-29 CN CN201721919704.4U patent/CN207892732U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111255596A (en) * | 2018-11-30 | 2020-06-09 | 长城汽车股份有限公司 | Engine assembly and vehicle with EGR system |
| CN114060183A (en) * | 2020-08-04 | 2022-02-18 | 深圳臻宇新能源动力科技有限公司 | Exhaust gas circulation system for vehicle, control method and vehicle |
| CN114991930A (en) * | 2022-06-07 | 2022-09-02 | 中国第一汽车股份有限公司 | Engine cooling and exhaust heat recovery system and car |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20181229 Address after: 318000 Area B, West of Haihong Avenue and South of Binba Road, Taizhou Economic Development Zone, Zhejiang Province Co-patentee after: ZHEJIANG GEELY HOLDING GROUP Co.,Ltd. Patentee after: TAIZHOU BINHAI GEELY ENGINE Co.,Ltd. Address before: 318000 Zhejiang Taizhou Binhai Industrial Park Staff Apartment Building 3 302 Rooms Patentee before: TAIZHOU GEELY LUOYOU ENGINE CO.,LTD. |
|
| 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: 20180921 Termination date: 20211229 |