CN108223207A - Diesel engine egr system - Google Patents
Diesel engine egr system Download PDFInfo
- Publication number
- CN108223207A CN108223207A CN201810122640.8A CN201810122640A CN108223207A CN 108223207 A CN108223207 A CN 108223207A CN 201810122640 A CN201810122640 A CN 201810122640A CN 108223207 A CN108223207 A CN 108223207A
- Authority
- CN
- China
- Prior art keywords
- egr
- cooler
- engine
- exhaust gas
- pipe
- 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.)
- Pending
Links
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
- F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
- F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
- F02M26/23—Layout, e.g. schematics
- F02M26/28—Layout, e.g. schematics with liquid-cooled heat exchangers
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust-Gas Circulating Devices (AREA)
Abstract
The invention discloses a kind of diesel engine egr system, including：Cooler for recycled exhaust gas, EGR coolings water inlet pipe, EGR cooling water outlets pipe, air inlet pipe and air outlet pipe.The body side of engine is fixed in cooler for recycled exhaust gas one end, and cooler for recycled exhaust gas is located at the lower section of the exhaust pipe of engine；EGR coolings water inlet pipe one end is connected with the oil cooler of the air inlet side of engine, and the other end is connected with cooler for recycled exhaust gas, and EGR cooling water inlet pipes are connected from cylinder cap rear end with oil cooler；EGR cooling water outlet pipes one end connects, and the other end is connected with cooler for recycled exhaust gas with thermostat base；Air inlet pipe one end is connected with the gas outlet of exhaust pipe, and the other end is connected with cooler for recycled exhaust gas；And air outlet pipe one end is connected with the air inlet of engine, and the other end is connected with EGR coolings.Whereby, diesel engine egr system of the invention is arranged in below exhaust pipe, avoids vehicle parts, repair easy to disassemble is advantageous for fire safety, and the circulating resistance of whole system is small.
Description
Technical field
The present invention relates to engine manufacturing field, more particularly to a kind of diesel engine egr system.
Background technology
In order to which diesel engine is made to have lower emission effect, reach stringent emission regulation demands, diesel engine body often needs
Increase EGR (discarded recycling) system.
Egr system parts are arranged in above flywheel shell of engine available engine or engine is egr system zero
Part is arranged in the top of engine.
Existing technical solution has the following disadvantages：
1st, in matching tractor, since the top of engine and rear end are required for the part of arrangement vehicle, which results in
Their suitability is restricted；
2nd, since egr system belongs to high temperature parts, two kinds of arrangements above are all there are security risk, in order to reach
Fire safety requirement, needs to wrap up egr system parts, and which results in the manufacture cost increases of complete machine；
3rd, in terms of repair convenience, particularly egr system parts are arranged in the scheme of engine head, result in and start
Machine maintenance difficulty increases, customer repair working hour expense increases；
4th, the water jacket resistance of cooler for recycled exhaust gas is big；
5th, engine shape is unsightly.
The information for being disclosed in the background technology part is merely intended to increase the understanding of the general background to the present invention, without answering
When being considered as recognizing or imply that information composition has been the prior art well known to persons skilled in the art in any form.
Invention content
The purpose of the present invention is to provide a kind of diesel engine egr system, so as to which existing egr system be overcome to be arranged in hair
On motivation bell housing or the shortcomings that engine head.
To achieve the above object, the present invention provides a kind of diesel engine egr system, including：Cooler for recycled exhaust gas, EGR
Cool down water inlet pipe, EGR cooling water outlets pipe, air inlet pipe and air outlet pipe.The body side of engine is fixed in cooler for recycled exhaust gas one end
Face, and cooler for recycled exhaust gas is located at the lower section of the exhaust pipe of engine；EGR cools down the machine of the air inlet side of water inlet pipe one end and engine
Oil cooler connects, and the other end is connected with cooler for recycled exhaust gas, and EGR cooling water inlet pipes are connected from cylinder cap rear end with oil cooler；
EGR cooling water outlet pipes one end connects, and the other end is connected with cooler for recycled exhaust gas with thermostat base；Air inlet pipe one end and exhaust pipe
Gas outlet connects, and the other end is connected with cooler for recycled exhaust gas；And air outlet pipe one end is connected with the air inlet of engine, and another
End is connected with EGR coolings.
Preferably, in above-mentioned technical proposal, the both ends of EGR cooling water inlet pipes and EGR cooling water outlet pipes are respectively provided with clip,
And clip cools down water inlet pipe and EGR cooling water outlet pipes to clamping EGR.
Preferably, in above-mentioned technical proposal, one end of cooler for recycled exhaust gas is the body that engine is fixed on by mounting flange
Side.
Compared with prior art, the present invention has the advantages that：The diesel engine egr system of the present invention, arrangement
Below exhaust pipe, vehicle parts are avoided, repair easy to disassemble is advantageous for fire safety, and the circulation of whole system
Resistance is small.
Description of the drawings
Fig. 1 is the structure diagram of diesel engine egr system according to the present invention.
Fig. 2 is the structure diagram that diesel engine egr system according to the present invention is installed on diesel engine.
Main appended drawing reference explanation：
1-EGR coolers, 2-EGR cooling water inlet pipes, 3-EGR cooling water outlet pipes, 4- air inlet pipe, 5- air outlet pipes, 6- clips.
Specific embodiment
Below in conjunction with the accompanying drawings, the specific embodiment of the present invention is described in detail, it is to be understood that the guarantor of the present invention
Shield range is not restricted by specific implementation.
Unless otherwise explicitly stated, otherwise in entire disclosure and claims, term " comprising " or its change
It changes such as "comprising" or " including " etc. and will be understood to comprise stated element or component, and do not exclude other members
Part or other component parts.
As shown in Figure 1 to Figure 2, Fig. 1 is the structure diagram of diesel engine egr system according to the present invention, and Fig. 2 is root
The structure diagram being installed on according to the diesel engine egr system of the present invention on diesel engine.According to the specific embodiment of the invention
A kind of diesel engine egr system, including：Cooler for recycled exhaust gas 1, EGR coolings water inlet pipe 2, EGR cooling water outlets pipe 3, air inlet
Pipe 4 and air outlet pipe 5.The body side of engine is fixed in 1 one end of cooler for recycled exhaust gas, and cooler for recycled exhaust gas 1 is located at engine
The lower section of exhaust pipe；2 one end of EGR cooling water inlet pipes is connected with the oil cooler of the air inlet side of engine, and the other end is cold with EGR
But device 1 connects, and EGR cooling water inlet pipes 2 are connected from cylinder cap rear end with oil cooler；3 one end of EGR cooling water outlets pipe and section temperature
Device seat connects, and the other end is connected with cooler for recycled exhaust gas 1；4 one end of air inlet pipe is connected with the gas outlet of exhaust pipe, and the other end with
Cooler for recycled exhaust gas 1 connects；And 5 one end of air outlet pipe is connected with the air inlet of engine, and the other end is connected with EGR coolings.
Preferably, EGR cools down the both ends of water inlet pipe 2 and EGR cooling water outlets pipe 3 and is respectively provided with clip 6, and clip 6 to
Clamping EGR cools down water inlet pipe 2 and EGR cooling water outlets pipe 3；One end of cooler for recycled exhaust gas 1 is to be fixed on engine by mounting flange
Body side.
In practical applications, cooler for recycled exhaust gas 1 fixes one end in the body side of engine, and the other end passes through 4 He of air inlet pipe
Comb connects, and plays fixed function；The oil cooler of cooler for recycled exhaust gas 1 from the air inlet side of engine take the water pipe of cooling water from
Walk (i.e. EGR cooling water inlet pipes 2 are walked from cylinder cap rear end), 1 return water of cooler for recycled exhaust gas to thermostat base (i.e. cooler for recycled exhaust gas in cylinder cap rear end
1 passes through the thermostat base of 3 return water of EGR cooling water outlets pipe to homonymy).Wherein, the exhaust gas of exhaust pipe discharge enters by air inlet pipe 4
It in cooler for recycled exhaust gas 1, cools in cooler for recycled exhaust gas 1, then by the air outlet pipe 5 of cooler for recycled exhaust gas 1 subsequently into engine
Air inlet, it is achieved thereby that the recycling of exhaust gas.
In short, the diesel engine egr system of the present invention has the advantages that：
1st, egr system is arranged in the lower section of exhaust pipe so that engine shape is more compact, lateral dimension keep with it is non-
EGR engine is consistent, its matching can be made more preferable；
2nd, egr system is arranged in below exhaust pipe, avoids vehicle parts, and be the low level in engine, for
Fire safety is advantageous；
3rd, egr system parts do not stop the other systems parts of engine, repair easy to disassemble；
4th, 1 position of cooler for recycled exhaust gas is lower than water inlet so that the circulating resistance of whole system is small；
5th, machine shape is more attractive.
The description of the aforementioned specific exemplary embodiment to the present invention is in order to illustrate and illustration purpose.These descriptions
It is not wishing to limit the invention to disclosed precise forms, and it will be apparent that according to the above instruction, can much be changed
And variation.The purpose of selecting and describing the exemplary embodiment is that explain that the specific principle of the present invention and its reality should
With so that those skilled in the art can realize and utilize the present invention a variety of different exemplary implementations and
Various chooses and changes.The scope of the present invention is intended to be limited by claims and its equivalents.
Claims (3)
1. a kind of diesel engine egr system, which is characterized in that including：
Cooler for recycled exhaust gas, one end is fixed on the body side of engine, and the cooler for recycled exhaust gas is located at the row of the engine
The lower section of tracheae；
EGR cools down water inlet pipe, and one end is connected with the oil cooler of the air inlet side of the engine, the other end and the EGR
Cooler connects, and EGR cooling water inlet pipes are connected from cylinder cap rear end with the oil cooler；
EGR cooling water outlet pipes, one end are connected with thermostat base, and the other end is connected with the cooler for recycled exhaust gas；
Air inlet pipe, one end are connected with the gas outlet of the exhaust pipe, and the other end is connected with the cooler for recycled exhaust gas；And
Air outlet pipe, one end are connected with the air inlet of the engine, and the other end is connected with EGR coolings.
2. diesel engine egr system according to claim 1, which is characterized in that EGR cooling water inlet pipe and described
The both ends of EGR cooling water outlet pipes are respectively provided with clip, and the clip cools down water inlet pipe and the EGR to EGR described in clamping
Cooling water outlet pipe.
3. diesel engine egr system according to claim 1, which is characterized in that one end of the cooler for recycled exhaust gas is logical
Cross the body side that mounting flange is fixed on the engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810122640.8A CN108223207A (en) | 2018-02-07 | 2018-02-07 | Diesel engine egr system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810122640.8A CN108223207A (en) | 2018-02-07 | 2018-02-07 | Diesel engine egr system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108223207A true CN108223207A (en) | 2018-06-29 |
Family
ID=62669662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810122640.8A Pending CN108223207A (en) | 2018-02-07 | 2018-02-07 | Diesel engine egr system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108223207A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104011342A (en) * | 2011-12-27 | 2014-08-27 | 洋马株式会社 | Engine device |
| CN104136730A (en) * | 2012-01-19 | 2014-11-05 | 洋马株式会社 | Engine device |
| CN104251170A (en) * | 2013-06-27 | 2014-12-31 | 铃木株式会社 | Exhaust gas recirculation device of vehicle motor |
| CN104696117A (en) * | 2015-01-15 | 2015-06-10 | 东风朝阳朝柴动力有限公司 | Compact type engine EGR (exhaust gas recirculation) system |
| CN106089506A (en) * | 2016-08-18 | 2016-11-09 | 东风朝阳朝柴动力有限公司 | EGR cooler for diesel general assembly structure |
| CN207813788U (en) * | 2018-02-07 | 2018-09-04 | 广西玉柴机器股份有限公司 | Diesel engine egr system |
-
2018
- 2018-02-07 CN CN201810122640.8A patent/CN108223207A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104011342A (en) * | 2011-12-27 | 2014-08-27 | 洋马株式会社 | Engine device |
| CN104136730A (en) * | 2012-01-19 | 2014-11-05 | 洋马株式会社 | Engine device |
| CN104251170A (en) * | 2013-06-27 | 2014-12-31 | 铃木株式会社 | Exhaust gas recirculation device of vehicle motor |
| CN104696117A (en) * | 2015-01-15 | 2015-06-10 | 东风朝阳朝柴动力有限公司 | Compact type engine EGR (exhaust gas recirculation) system |
| CN106089506A (en) * | 2016-08-18 | 2016-11-09 | 东风朝阳朝柴动力有限公司 | EGR cooler for diesel general assembly structure |
| CN207813788U (en) * | 2018-02-07 | 2018-09-04 | 广西玉柴机器股份有限公司 | Diesel engine egr system |
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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: 20180629 |
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| RJ01 | Rejection of invention patent application after publication |