CN106593703B - A kind of heat-insulated burning auxiliary device of internal combustion engine - Google Patents
A kind of heat-insulated burning auxiliary device of internal combustion engine Download PDFInfo
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- CN106593703B CN106593703B CN201611193629.8A CN201611193629A CN106593703B CN 106593703 B CN106593703 B CN 106593703B CN 201611193629 A CN201611193629 A CN 201611193629A CN 106593703 B CN106593703 B CN 106593703B
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Abstract
The present invention provides a kind of heat-insulated burning auxiliary devices of internal combustion engine, including EGR pumps, high-pressure air pipe, high pressure gas rail, exhaust gas distribution pipe, electronic controlled gas injection mouth, EGR pipe and ECU, the electronic controlled gas injection mouth is connect by the exhaust gas distribution pipe with the high pressure gas rail, and the high pressure gas rail is connected by the high-pressure air pipe and EGR pumps；When engine needs to carry out appropriate heat-insulated, the ECU sends out instruction, the electronic controlled gas injection mouth on cylinder wall is opened, spray into high-pressure engine exhaust gas, and the vortex rotated around cylinder centerline is generated by the relative motion with cylinder sleeve, it is vortexed direction of rotation, and vortex direction should to be formed by combustion recess with air flue identical, to be formed about eddy airstream band with heat-transfer areas such as cylinder liner surfaces above piston-top surface, appropriateness is carried out to combustion chamber wall surface with high-temp combustion region to be isolated, wall surface heat transfer is reduced, realizes the combustion process of low heat emission.And realize a degree of exhaust gas recycling, ignition temperature is reduced, NOx emission is reduced.
Description
Technical field
The invention belongs to technical field of internal combustion engines, more particularly, to a kind of heat-insulated burning auxiliary device of internal combustion engine.
Background technology
Heat-insulated combustion technology is the combustion technology developed for low heat rejection engine, and the research of low heat rejection engine is opened
Start from the 1970s, the original intention studied be by combustion chamber (piston top, cylinder cap bottom, cylinder sleeve, valve etc.) carry out every
Thermal design reduces heat transfer loss, improves engine thermal efficiency, while can cancel cooling water system, reduces machine dimensions, again
Amount.
Most common mode is to apply barrier material in combustion chamber before this, thus can be heat-insulated in air inlet due to combustion chamber
Cheng Zhong, chamber wall is towards gas heat-transfer so that compression terminal temperature increases, and fuel oil delay period shortens, and delay period is formed mixed
It closes destiny amount to reduce, initial stage heat liberation rate, heat release rate declines, and the rate of pressure rise also declines therewith.
Low heat rejection can also affect the volumetric efficiency, the thermal efficiency and fuel consumption rate of engine, and can be right
NOx emission has an impact.
Due to the reduction of heat dissipation capacity, Low heat rejection is for the cold start of engine and burning all bands of gaseous fuel
Carry out favorable influence.
But the durability and reliability due to barrier material are bad, and application of the Low heat rejection on internal combustion engine always can not
It effectively realizes, limits the popularization of the technology.
Invention content
In view of this, the present invention is directed to propose a kind of heat-insulated burning auxiliary device of internal combustion engine, on the one hand passes through penetrating high pressure
Engine exhaust forms exhaust gas vortex rotate around cylinder centerline, thus above piston-top surface with the heat transfers such as cylinder liner surface
Face is formed about exhaust gas circulation layer, and carrying out appropriateness with high-temp combustion to combustion chamber wall surface is isolated, and reduces wall surface heat transfer, realizes low dissipate
The combustion process of heat；On the other hand burning is not involved in due to engine exhaust, realizes a degree of exhaust gas and recycles, it can be with
Ignition temperature is reduced, NOx emission is advantageously reduced.
In order to achieve the above objectives, the technical proposal of the invention is realized in this way：
A kind of heat-insulated burning auxiliary device of internal combustion engine, including EGR pumps, high-pressure air pipe, high pressure gas rail, exhaust gas distribution pipe, electricity
Air nozzle, EGR pipe and ECU are controlled, the air inlet of the EGR pumps is connected to the exhaust pipe of engine by EGR pipe；The EGR pumps
Exhaust outlet is connected to electronic controlled gas injection mouth described in the high pressure gas rail by high-pressure air pipe and passes through the exhaust gas distribution pipe and the high pressure
Gas rail connects；The electronic controlled gas injection mouth is mounted on certain angle of inclination in cylinder head, and gas that it is sprayed into is made to pass through and cylinder sleeve
Relative motion generate the vortex that rotate around cylinder centerline, be vortexed direction of rotation and be formed by the combustion chamber with air intake duct
The direction being vortexed in cylinder is identical；The electronic controlled gas injection mouth is controlled by the ECU.
Further, the EGR pumps include that EGR pumps air inlet pipe, spiral air pump, solenoid valve and EGR pump out tracheae, the spiral shell
Air pump is revolved by motor drive；The air inlet of the spiral air pump pumps air inlet pipe by EGR and is connect with the EGR pipe；The spiral shell
The gas outlet of rotation air pump pumps out tracheae by EGR and is connect with the high-pressure air pipe, and the electromagnetism on tracheae is pumped out by the EGR
Valve controls.
Further, the electronic controlled gas injection mouth is mounted in the cylinder head of engine, is located at cylinder head and piston top dead center
Between position.
Further, the electronic controlled gas injection mouth has 4, along the circumferential uniformly installation of cylinder head.
Compared with the existing technology, the present invention has the advantage that：
(1) the heat-insulated burning auxiliary device of internal combustion engine of the present invention is generated by the relative motion with cylinder sleeve in cylinder
The heart line rotation vortex, vortex direction of rotation should be in the combustion chamber formed by with air intake duct in cylinder be vortexed direction it is identical, from
And exhaust gas circulation layer is formed about with heat-transfer areas such as cylinder liner surfaces above piston-top surface, to combustion chamber wall surface and high temperature combustion zone
Domain carries out appropriate isolation, reduces wall surface heat transfer, realizes the combustion process of low heat emission.
(2) engine exhaust of heat-insulated burning the sprayed into cylinder of auxiliary device of internal combustion engine of the present invention is not involved in combustion
It burns, and combustion mixture engine exhaust forms layering, is not influencing fuel oil and the combustion mixture ingredient of air formation
Meanwhile it being more conducive to catching fire, burning for engine, and since engine exhaust is not involved in burning, realize to a certain degree
Exhaust gas recycling, ignition temperature can be reduced, advantageously reduce NOx emission.
(3) the heat-insulated burning assistant apparatus structure of internal combustion engine of the present invention is simple, it is wide to expand application range, can be extensive
Applied to passenger car, commercial car, agricultural machinery and engineering, mine engine.Description of the drawings
The attached drawing for constituting the part of the present invention is used to provide further understanding of the present invention, schematic reality of the invention
Example and its explanation are applied for explaining the present invention, is not constituted improper limitations of the present invention.In the accompanying drawings：
Fig. 1 is the heat-insulated burning auxiliary device system diagram of internal combustion engine described in the embodiment of the present invention；
Fig. 2 is the heat-insulated burning auxiliary device partial enlarged view of internal combustion engine described in the embodiment of the present invention；
Fig. 3 is the structural schematic diagram of EGR pumps described in the embodiment of the present invention.
1, EGR is pumped；2, high-pressure air pipe；3, high pressure gas rail；4, exhaust gas distribution pipe；5, electronic controlled gas injection mouth；6, engine；7, living
Plug；8, cylinder head；9, exhaust pipe；10, exhaust duct；11, exhaust valve；12, EGR pipe；13, fuel injector；14, inlet valve；15, air inlet
Road；16, control line；17,ECU；18, cylinder sleeve；19, piston top；20, exhaust gas circulation layer；21, combustion recess aditus laryngis；22, it burns
Room base frame；23, vortex in cylinder；24, motor；25, EGR pumps air inlet pipe；26, spiral air pump；27, solenoid valve；28, EGR is pumped out
Tracheae.
Specific implementation mode
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
A kind of heat-insulated burning auxiliary device of internal combustion engine, as shown in Figure 1, 2, including EGR pumps 1, high-pressure air pipe 2, high pressure gas rail
3, exhaust gas distribution pipe 4, electronic controlled gas injection mouth 5, EGR pipe 12 and ECU17, the air inlet of the EGR pumps 1 is connected to by EGR pipe 12 to be sent out
The exhaust pipe 9 of motivation；The exhaust outlet of the EGR pumps 1 is connected to the high pressure gas rail 3, the electronic controlled gas injection mouth by high-pressure air pipe 2
5 are connect by the exhaust gas distribution pipe 4 with the high pressure gas rail 3；
The electronic controlled gas injection mouth 5 is mounted on certain angle of inclination in the cylinder head 8 of engine 6, the high pressure for making it spray into
Engine exhaust generates the vortex rotated around cylinder centerline in the relative motion with cylinder sleeve 18, and vortex direction of rotation should be with
It is identical that the air intake duct 15 that inlet valve 14 is connected to is formed by 23 directions of vortex in cylinder in the combustion chamber；
The electronic controlled gas injection mouth 5 is connect by control line 16 with ECU17, is controlled by the ECU17, and institute can be passed through
It states EGR pumps 1 to aspirate engine exhaust in the exhaust pipe 9 via the EGR pipe 12 and after being pressurized, then through the high pressure gas rail
3, the high-pressure engine exhaust gas after the exhaust gas distribution pipe 4 is distributed sprays into the combustion chamber of engine 6 at an angle；
As shown in Fig. 2, the electronic controlled gas injection mouth 5 there are 4, along the circumferential uniformly installation of cylinder head 8, it is particularly located at cylinder
Between 7 top dead center position of lid 8 and piston.
As shown in figure 3, the EGR pumps 1, which include EGR pumps air inlet pipe 25, spiral air pump 26, solenoid valve 27 and EGR, pumps out gas
Pipe 28, the spiral air pump 26 are driven by motor 24；The air inlet of the spiral air pump 26 pumps air inlet pipe 25 and institute by EGR
State the connection of EGR pipe 12；The gas outlet of the spiral air pump 26 pumps out tracheae 28 by EGR and is connect with the high-pressure air pipe 2, and leads to
It crosses the EGR and pumps out the circulation that the solenoid valve 27 on tracheae 28 controls air exhauster exhaust gas.
When work, the ECU17 controls the motor 24 and the spiral air pump 26 is driven to work, and opens simultaneously the electricity
Magnet valve 27, then the engine exhaust in the exhaust duct 10 where exhaust valve 11 air inlet pipe is pumped from the EGR by the EGR pipe 12
25 flow into the EGR pumps 1, after the spiral air pump 26 supercharging, then pump out tracheae 28 by the EGR and flow into the high pressure gas
Pipe 2, and the electronic controlled gas injection mouth 5 in the cylinder head 8 of engine 6 is eventually entered into, spray into the gas of the engine 6
Cylinder.
The electronic controlled gas injection mouth 5 is opened after sending out instruction according to the ECU17, sprays into high-pressure engine exhaust gas, and pass through
Relative motion with cylinder sleeve 18 generates the vortex rotated around cylinder centerline, and vortex direction of rotation should be connected to inlet valve 14
Air intake duct 15 to be formed by 23 directions of vortex in cylinder in the combustion chamber identical, to piston top 19 above and 18 surface of cylinder sleeve
Equal heat-transfer areas are formed about exhaust gas circulation layer 20, and the exhaust gas circulation layer 20 is mainly in cylinder sleeve 18 and combustion recess aditus laryngis 21
Between, and vortex 23 is mainly formed between combustion recess aditus laryngis 21 and combustion chamber base frame 22 in cylinder, to combustion chamber wall surface with
High-temp combustion region carries out appropriate isolation, reduces wall surface heat transfer, realizes the combustion process of low heat emission.And due to engine exhaust
It is not involved in burning, a degree of exhaust gas recycling is realized, ignition temperature can be reduced, advantageously reduce NOx emission.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (3)
1. a kind of heat-insulated burning auxiliary device of internal combustion engine, it is characterised in that：Including EGR pumps (1), high-pressure air pipe (2), high pressure gas rail
(3), the air inlet of exhaust gas distribution pipe (4), electronic controlled gas injection mouth (5), EGR pipe (12) and ECU (17), the EGR pumps (1) pass through
EGR pipe (12) is connected to the exhaust pipe (9) of engine；The exhaust outlet of the EGR pumps (1) is connected to the high pressure by high-pressure air pipe 2
Gas rail (3), the electronic controlled gas injection mouth (5) are connect by the exhaust gas distribution pipe (4) with the high pressure gas rail (3)；
The electronic controlled gas injection mouth (5) is mounted on certain angle of inclination in cylinder head (8), and gas that it is sprayed into is made to pass through and cylinder sleeve
(18) relative motion generates the vortex rotated around cylinder centerline, and vortex direction of rotation and air intake duct (15) are in the combustion chamber
The direction for being formed by vortex (23) in cylinder is identical；The electronic controlled gas injection mouth (5) is controlled by the ECU (17).
2. the heat-insulated burning auxiliary device of internal combustion engine according to claim 1, it is characterised in that：The EGR pumps (1)
EGR pump air inlet pipe (25), spiral air pump (26), solenoid valve (27) and EGR pump out tracheae (28), and the spiral air pump (26) is by electricity
Motivation (24) drives；The air inlet of the spiral air pump (26) pumps air inlet pipe (25) by EGR and is connect with the EGR pipe (12)；
The gas outlet of the spiral air pump (26) pumps out tracheae (28) by EGR and is connect with the high-pressure air pipe (2), and by described
EGR pumps out the control of the solenoid valve (27) on tracheae (28).
3. the heat-insulated burning auxiliary device of internal combustion engine according to claim 1, it is characterised in that：The electronic controlled gas injection mouth (5)
There are 4, along the circumferential uniformly installation of cylinder head (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611193629.8A CN106593703B (en) | 2016-12-21 | 2016-12-21 | A kind of heat-insulated burning auxiliary device of internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611193629.8A CN106593703B (en) | 2016-12-21 | 2016-12-21 | A kind of heat-insulated burning auxiliary device of internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106593703A CN106593703A (en) | 2017-04-26 |
| CN106593703B true CN106593703B (en) | 2018-11-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611193629.8A Active CN106593703B (en) | 2016-12-21 | 2016-12-21 | A kind of heat-insulated burning auxiliary device of internal combustion engine |
Country Status (1)
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4104011C1 (en) * | 1991-02-09 | 1992-02-20 | Daimler-Benz Aktiengesellschaft, 7000 Stuttgart, De | IC engine control system - uses EGR and low heat conduction inlet manifold with matching of inlet air to injected fuel volume |
| CN203856609U (en) * | 2014-03-27 | 2014-10-01 | 潍柴动力股份有限公司 | EGR (exhaust gas recirculation) system |
| JP6172080B2 (en) * | 2014-07-25 | 2017-08-02 | マツダ株式会社 | Method and apparatus for forming heat insulation layer |
| CN205172762U (en) * | 2015-08-31 | 2016-04-20 | 谢晓宇 | Quartastroke engine exhaust recirculation system |
| CN205330831U (en) * | 2016-02-05 | 2016-06-22 | 东风商用车有限公司 | Internal -combustion engine EGR is system of spouting directly |
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2016
- 2016-12-21 CN CN201611193629.8A patent/CN106593703B/en active Active
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| CN106593703A (en) | 2017-04-26 |
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