CN110173343A - A kind of engine ignition room jet stream collision burning system - Google Patents
A kind of engine ignition room jet stream collision burning system Download PDFInfo
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- CN110173343A CN110173343A CN201910491869.3A CN201910491869A CN110173343A CN 110173343 A CN110173343 A CN 110173343A CN 201910491869 A CN201910491869 A CN 201910491869A CN 110173343 A CN110173343 A CN 110173343A
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- channel
- jet stream
- chamber
- igniting
- engine
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- 239000000446 fuel Substances 0.000 claims abstract description 10
- 238000002347 injection Methods 0.000 claims abstract description 4
- 239000007924 injection Substances 0.000 claims abstract description 4
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 3
- 238000002485 combustion reaction Methods 0.000 claims description 12
- 230000006835 compression Effects 0.000 claims description 11
- 238000007906 compression Methods 0.000 claims description 11
- 239000011810 insulating material Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 238000002955 isolation Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 description 15
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 8
- 239000012530 fluid Substances 0.000 description 5
- 239000008246 gaseous mixture Substances 0.000 description 4
- 239000003345 natural gas Substances 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003116 impacting effect Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B19/00—Engines characterised by precombustion chambers
- F02B19/12—Engines characterised by precombustion chambers with positive ignition
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B19/00—Engines characterised by precombustion chambers
- F02B19/16—Chamber shapes or constructions not specific to sub-groups F02B19/02 - F02B19/10
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B19/00—Engines characterised by precombustion chambers
- F02B19/16—Chamber shapes or constructions not specific to sub-groups F02B19/02 - F02B19/10
- F02B19/18—Transfer passages between chamber and cylinder
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B43/00—Engines characterised by operating on gaseous fuels; Plants including such engines
- F02B43/10—Engines or plants characterised by use of other specific gases, e.g. acetylene, oxyhydrogen
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B43/00—Engines characterised by operating on gaseous fuels; Plants including such engines
- F02B43/10—Engines or plants characterised by use of other specific gases, e.g. acetylene, oxyhydrogen
- F02B2043/103—Natural gas, e.g. methane or LNG used as a fuel
-
- 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
-
- 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
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
Abstract
The invention discloses a kind of engine ignition room jet stream collision burning systems, including cylinder, piston and cylinder cap, the top of piston is equipped with pit, the space surrounded between the pit and cylinder and cylinder cap constitutes main chamber, the cylinder cap is equipped with hollow shell and case lid, space inside the shell and case lid constitutes igniting chamber, and igniter and fuel supply system are provided on igniting chamber, and the igniting chamber is connected to by several channels with main chamber；Spatially packet layout, each group of channel include 2-3 channel in above-mentioned channel, and the direction in each channel is set as colliding the jet stream of each channel injection in the group mutually in main chamber in same group, for reinforcing the indoor turbulent perturbation of main burning.Object of the present invention is to further increase igniting chamber jet stream to the turbulent perturbation of main chamber, to accelerate the burning of main chamber, and then improve the performance and discharge of engine.
Description
Technical field
The invention belongs to technical field of engines, and in particular to a kind of engine ignition room jet stream collision burning system.
Background technique
When engine is using high-flashes fuel such as LNG, LPG, it is difficult to which compression ignition needs by the way of lighting, in order to mention
High engine efficiency, it is also desirable to which the gaseous mixture in cylinder is thin as much as possible.But spark-ignition engine implement lean-burn there is also
Some problems, for example, the ignition energy that Weak mixture requires is higher, general spark plug is difficult to meet the requirement of ignition energy,
Even with the high-energy sparking plug specially researched and developed, excessively high ignition energy also will affect the service life of spark plug.In addition, i.e.
Allowing to successful ignition, the decline of Weak mixture Flame Propagation rate also results in engine efficiency and declines, deterioration of emission,
Even generate the Abnormal combustions phenomenons such as pinking.Especially for the engine of large-diameter, such as cylinder diameter starting greater than 150mm
Machine, since the flame travel needed for it is longer, the probability that these Abnormal combustion phenomenons occur is just higher.
It is a kind of feasible method for realizing large-diameter spark-ignition engine layering lean-burn using igniting chamber system.Starting
A kind of low capacity concubine being commonly known as igniting chamber or precombustion chamber is set in the cylinder head of machine, if by dry passage and main chamber
Connection, flows freely fluid working substance between main chamber and igniting chamber.When engine operation, formed in cylinder dilute
Thin gaseous mixture, being formed in igniting chamber by suitable fueling strategy is suitable for the rich mixture lighted, in compression top center
Before, it is lighted a fire indoor rich mixture by spark ignitor, with lighting a fire indoor burning and heat discharges, working medium in igniting chamber
Pressure increase rapidly, drive the indoor working medium that is unburned, partially combusted and having fired of igniting to flow into main chamber through channel,
Turbulent flame jet stream is formed, plays the role of high energy ignition unit, lights the indoor Weak mixture of main burning, and in main burning
The indoor a degree of turbulent flow excitation of formation promotes the propagation of main chamber flame, to realize quickly and adequately burn.
This mode, on the stationary electric power plant engine and marine engine of the large-diameter using fuel such as LNG, CNG and LPG
It is successfully applied.
In these ignition chamber type engines, several channels for connecting igniting chamber and main chamber are generally radial,
Igniting chamber spray dispersion is set to be emitted to the different zones of main chamber.For the engine of Four valve, usually igniting chamber is arranged
In the center on cylinder top, and igniting chamber channel is then evenly arranged in circumferencial direction.The radiation in engine ignition room channel
Shape arrangement can obtain certain effect, but also have its limitation, for example, failing to make full use of energy of the impinging jet in main combustion
Burn the turbulent perturbation of indoor formation higher intensity.
Summary of the invention
For the above-mentioned problems in the prior art, the present invention provides a kind of collisions of engine ignition room jet stream to burn
System, it is therefore an objective to further increase igniting chamber jet stream to the turbulent perturbation of main chamber, to accelerate the burning of main chamber, in turn
Improve the performance and discharge of engine.
For this purpose, the invention adopts the following technical scheme:
A kind of engine ignition room jet stream collision burning system, including cylinder, piston and cylinder cap, the top of piston are equipped with recessed
Hole, the space surrounded between the pit and cylinder and cylinder cap constitute main chamber, and the cylinder cap is equipped with hollow shell
And case lid, the space inside the shell and case lid constitute igniting chamber, and igniter is provided on igniting chamber and fuel supplies
To device, the igniting chamber is connected to by several channels with main chamber；Above-mentioned channel spatially packet layout, each group
Channel includes 2-3 channel, and the direction in each channel is set as making the jet stream of each channel injection in the group in master in same group
It is mutually collided in combustion chamber, for reinforcing the indoor turbulent perturbation of main burning；In above-mentioned each group of channel, each channel is towards point
The direction at fiery room end is in divergent shape, and the direction at each channel towards main chamber end is in convergence shape.
Preferably, range of the angle at 3 ° -50 ° in the same group of channel, between the axis of any two passes
It is interior.
Preferably, the ratio of the cross-sectional area of total circulation area and piston in all channels of the igniting chamber exists
In the range of 0.0004-0.002.
Preferably, the ratio of the volume of the igniting chamber and cylinder compression volume is described in the range of 0.5%-5.0%
Cylinder compression volume is the volume of piston main chamber in top dead center position.
Preferably, the igniting chamber use Thermo Isolation Technique, including igniting chamber using heat-insulating material make, or igniting chamber with
The inner wall in channel carries out heat-insulating material coating.
Preferably, the shape in the channel includes cylindrical structure and conical structure.
The combustion system is applied to spark-ignition engine.
The spark-ignition engine includes four strokes and two stroke spark-ignition engine.
It is greater than the spark ignition type two-cycle engine of 500mm preferably for cylinder diameter, each cylinder is equipped with 2-4 and covers igniting chamber
System.
Compared with prior art, the beneficial effects of the present invention are:
(1) when light a fire indoor gaseous mixture ignition after, indoor power pressure of lighting a fire sharply increases, and drives igniting
It is indoor unburned and fired fluid through channels main chamber is entered with very high rate stream, turbulent flame jet stream is formed, main burning is lighted
Indoor Weak mixture.
(2) main combustion is improved since the jet stream from each channel mutually collides in main chamber for each group of channel
Indoor turbulence intensity is burnt, promotes combustion flame to propagate with faster rate, further speeds up flame propagation, is improved burned
Journey, to improve the performance indicators such as the thermal efficiency of engine.
(3) it is collided in the natural gas fueled engines that a cylinder diameter is 240mm using igniting chamber jet stream of the present invention
Combustion system, compared with the design being evenly arranged using conventional igniting chamber channel circumference, engine thermal efficiency is improved
4.3%, can the excess air coefficient of stable operation improve 4.8%.
(4) structure is simple, easy to implement, practical.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of engine ignition room jet stream collision burning system provided by the present invention.
Fig. 2 is the office in one group of 2 channel in a kind of engine ignition room jet stream collision burning system provided by the present invention
Portion's amplification assumption diagram.
Description of symbols: 1, cylinder；2, piston；3, cylinder cap；4, main chamber；5, shell；51, case lid；6, it lights a fire
Room；7, channel group；71, first passage；72, second channel；71S, the first jet stream；72S, the second jet stream；7S, impacting jet；8,
Fuel supply system；9, igniter.
Specific embodiment
With reference to the accompanying drawing and specific embodiment come the present invention will be described in detail, specific embodiment therein and explanation only
For explaining the present invention, but it is not as a limitation of the invention.
As shown in Figure 1, the invention discloses a kind of engine ignition room jet stream collision burning system, including cylinder 1, piston
2 and cylinder cap 3, the space surrounded between pit, with cylinder 1 and cylinder cap 3, which is equipped with, at the top of piston 2 constitutes main chamber 4,
Hollow a shell 5 and case lid 51 are provided on cylinder cap 3, the space inside the shell 5 and case lid 51 constitutes igniting
Several cylindrical channel groups 7 are arranged in the bottom of shell 5 in room 6, and each channel group 7 includes first passage 71, second channel 72,
It is connected to igniting chamber 6 and main chamber 4, flows freely fluid between igniting chamber 6 and main chamber 4.In addition, of the invention
A kind of engine ignition room jet stream collision burning system further includes a set of igniting chamber fuel being mounted in case lid 51
Feedway 8 and igniter 9.
It include 2 channels in the same channel group 7 as shown in Fig. 2, the channel of the igniting chamber 6 is distributed in groups, i.e., first
The axis of channel 71 and second channel 72, first passage 71 and second channel 72 intersects convergence in main chamber 4.It needs exist for
Illustrate, as long as the fluid that the channel in the same channel group is ejected can collide in main chamber, institute
The axis in the channel for including is not necessarily required to intersect.
Embodiment
For below using use natural gas as the engine of fuel, illustrate that engine ignition room of the present invention jet stream touches
Hit the course of work of combustion system.
In the air inlet and/or compression stroke of engine, by suitable fuel injection strategy, the shape in main chamber 4
At Weak mixture, the range of the air excess factor of Weak mixture is 1.8-2.2 in the main chamber 4.
In compression stroke, the Weak mixture in main chamber 4 is kept the pressure in main chamber 4 high by piston press
Pressure in igniting chamber 6, therefore, the Weak mixture in main chamber 4 flow into point through first passage 71, second channel 72 etc.
Fiery room 6.
In induction stroke advanced stage or compression stroke early stage, supplied in right amount by igniting chamber fuel supply system 8 to igniting chamber 6
Natural gas, making to be formed in the later period of compression stroke in igniting chamber 6 is suitable for the rich mixture lighted, the excess of the rich mixture
The range of air coefficient λ is 0.8-1.2.
25 crank angle degrees before phase after the compression stroke, such as top dead centre are lighted in igniting chamber 6 by igniter 9
It is suitable for the rich mixture lighted, increases the pressure in igniting chamber 6 rapidly, the pressure being significantly higher than in main chamber 4, to drive
Make the fluid in igniting chamber 6 comprising possible trouble gaseous mixture, combustion intermediate product living radical and high-temperature combustion product through several logical
Group 7 high velocity stream in road enters main chamber 4, forms turbulent flame jet stream, lights the Weak mixture in main chamber 4.At each group
In channel 7, since the first jet stream 71S and the second jet stream 72S respectively from first passage 71 and second channel 72 are in main burning
Blending collision, is fused into impacting jet 7S, makes to produce a wide range of, high-intensitive turbulent perturbation in main chamber 4, have in room 4
Help improve the rate of flame propagation of the Weak mixture in main chamber 4, so as to improve the burning of engine, improves engine
The thermal efficiency.
Using igniting chamber jet stream of the present invention collision burning in the natural gas fueled engines that a cylinder diameter is 240mm
System, compared with the design being evenly arranged using conventional igniting chamber channel circumference, engine thermal efficiency improves 4.3%, can be steady
Surely the excess air coefficient run improves 4.8%.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to restrict the invention, all in essence of the invention
Made any modification, equivalent replacement and improvement etc., should be included in protection scope of the present invention within mind and spirit
Within.
Claims (9)
1. a kind of engine ignition room jet stream collision burning system, including cylinder, piston and cylinder cap, the top of piston is equipped with recessed
Hole, the space surrounded between the pit and cylinder and cylinder cap constitute main chamber, and the cylinder cap is equipped with hollow shell
And case lid, the space inside the shell and case lid constitute igniting chamber, and igniter is provided on igniting chamber and fuel supplies
To device, the igniting chamber is connected to by several channels with main chamber, it is characterised in that: above-mentioned channel is spatially grouped
Arrangement, each group of channel includes 2-3 channel, and the direction in each channel is set as making each channel injection in the group in same group
Jet stream mutually collided in main chamber, for reinforcing the indoor turbulent perturbation of main burning；In above-mentioned each group of channel, each item
The direction at channel towards igniting chamber end is in divergent shape, and the direction at each channel towards main chamber end is in convergence shape.
2. a kind of engine ignition room jet stream collision burning system according to claim 1, it is characterised in that: described same
In one group of channel, the angle between the axis of any two passes is in the range of 3 ° -50 °.
3. a kind of engine ignition room jet stream collision burning system according to claim 1, it is characterised in that: the igniting
The ratio of the cross-sectional area of total circulation area and piston in all channels of room is in the range of 0.0004-0.002.
4. a kind of engine ignition room jet stream collision burning system according to claim 1, it is characterised in that: the igniting
In the range of 0.5%-5.0%, the cylinder compression volume is piston upper for the volume of room and the ratio of cylinder compression volume
The volume of main chamber when dead-centre position.
5. a kind of engine ignition room jet stream collision burning system according to claim 1, it is characterised in that: the igniting
Room uses Thermo Isolation Technique, including igniting chamber to be made of heat-insulating material, or the inner wall in igniting chamber and channel carries out heat-insulating material
Coating.
6. a kind of engine ignition room jet stream collision burning system according to claim 1, it is characterised in that: the channel
Shape include cylindrical structure and conical structure.
7. according to right want any one of 1 to 6 described in a kind of engine ignition room jet stream collision burning system, feature exists
In: the combustion system is applied to spark-ignition engine.
8. a kind of engine ignition room jet stream collision burning system according to claim 7, it is characterised in that: described to light
Formula engine includes four strokes and two stroke spark-ignition engine.
9. a kind of engine ignition room jet stream collision burning system according to claim 8, it is characterised in that: for cylinder diameter
Spark ignition type two-cycle engine greater than 500mm, each cylinder are equipped with 2-4 set igniting chamber system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910491869.3A CN110173343A (en) | 2019-06-06 | 2019-06-06 | A kind of engine ignition room jet stream collision burning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910491869.3A CN110173343A (en) | 2019-06-06 | 2019-06-06 | A kind of engine ignition room jet stream collision burning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110173343A true CN110173343A (en) | 2019-08-27 |
Family
ID=67698050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910491869.3A Pending CN110173343A (en) | 2019-06-06 | 2019-06-06 | A kind of engine ignition room jet stream collision burning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110173343A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113653559A (en) * | 2021-08-18 | 2021-11-16 | 天津大学 | Gasoline engine ignition mechanism containing eccentric axis type active precombustion chamber |
| CN113944540A (en) * | 2020-07-17 | 2022-01-18 | 广州汽车集团股份有限公司 | Engine pre-combustion chamber structure, engine and automobile with engine pre-combustion chamber structure |
| US20220389858A1 (en) * | 2019-09-16 | 2022-12-08 | Woodward, Inc. | Flame triggered and controlled volumetric ignition |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06129336A (en) * | 1992-10-14 | 1994-05-10 | Mitsubishi Heavy Ind Ltd | Two-cycle auxiliary chamber type glow plug ignition engine |
| JPH07150943A (en) * | 1993-11-26 | 1995-06-13 | Mitsubishi Heavy Ind Ltd | Combustion chamber for auxiliary chamber type internal combustion engine |
| JP2007247420A (en) * | 2006-03-13 | 2007-09-27 | Nissan Motor Co Ltd | Auxiliary-chamber type internal combustion engine |
| US20140261298A1 (en) * | 2013-03-15 | 2014-09-18 | Cummins Inc. | Pre-chamber for internal combustion engine |
-
2019
- 2019-06-06 CN CN201910491869.3A patent/CN110173343A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06129336A (en) * | 1992-10-14 | 1994-05-10 | Mitsubishi Heavy Ind Ltd | Two-cycle auxiliary chamber type glow plug ignition engine |
| JPH07150943A (en) * | 1993-11-26 | 1995-06-13 | Mitsubishi Heavy Ind Ltd | Combustion chamber for auxiliary chamber type internal combustion engine |
| JP2007247420A (en) * | 2006-03-13 | 2007-09-27 | Nissan Motor Co Ltd | Auxiliary-chamber type internal combustion engine |
| US20140261298A1 (en) * | 2013-03-15 | 2014-09-18 | Cummins Inc. | Pre-chamber for internal combustion engine |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220389858A1 (en) * | 2019-09-16 | 2022-12-08 | Woodward, Inc. | Flame triggered and controlled volumetric ignition |
| US11965455B2 (en) * | 2019-09-16 | 2024-04-23 | Woodward, Inc. | Flame triggered and controlled volumetric ignition |
| CN113944540A (en) * | 2020-07-17 | 2022-01-18 | 广州汽车集团股份有限公司 | Engine pre-combustion chamber structure, engine and automobile with engine pre-combustion chamber structure |
| CN113944540B (en) * | 2020-07-17 | 2023-02-28 | 广州汽车集团股份有限公司 | Engine pre-combustion chamber structure, engine and automobile with engine pre-combustion chamber structure |
| CN113653559A (en) * | 2021-08-18 | 2021-11-16 | 天津大学 | Gasoline engine ignition mechanism containing eccentric axis type active precombustion chamber |
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Application publication date: 20190827 |