CN109989822A - Gas engine pre-combustion chamber - Google Patents
Gas engine pre-combustion chamber Download PDFInfo
- Publication number
- CN109989822A CN109989822A CN201910282742.0A CN201910282742A CN109989822A CN 109989822 A CN109989822 A CN 109989822A CN 201910282742 A CN201910282742 A CN 201910282742A CN 109989822 A CN109989822 A CN 109989822A
- Authority
- CN
- China
- Prior art keywords
- chamber
- mounting hole
- check valve
- epicoele
- conducting wires
- 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
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 33
- 239000007789 gas Substances 0.000 claims abstract description 21
- 238000002347 injection Methods 0.000 claims abstract description 14
- 239000007924 injection Substances 0.000 claims abstract description 14
- 239000008246 gaseous mixture Substances 0.000 claims abstract description 7
- 239000002737 fuel gas Substances 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 5
- 238000010304 firing Methods 0.000 claims 2
- 239000000203 mixture Substances 0.000 abstract description 11
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 6
- 239000003345 natural gas Substances 0.000 abstract description 3
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Classifications
-
- 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
- F02B19/10—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder
- F02B19/1019—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder with only one pre-combustion chamber
- F02B19/1023—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder with only one pre-combustion chamber pre-combustion chamber and cylinder being fed with fuel-air mixture(s)
-
- 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
- F02B19/10—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder
- F02B19/1019—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder with only one pre-combustion chamber
- F02B19/108—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder with only one pre-combustion chamber with fuel injection at least into pre-combustion chamber, i.e. injector mounted directly in the pre-combustion chamber
-
- 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
- F02B19/18—Transfer passages between chamber and cylinder
-
- 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
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 gas engine pre-combustion chambers.The gas engine pre-combustion chamber includes: high-voltage conducting wires casing；Pre-burning chamber body, lower end have precombustion chamber epicoele, and the side above the precombustion chamber epicoele has spark plug mounting hole, and the other side of the top of the precombustion chamber epicoele has check valve mounting hole, which is connected to by inlet channel with precombustion chamber epicoele；The high-voltage conducting wires casing is fixed on the upper end of pre-burning chamber body, spark plug；Check valve；And nozzle, the upper end have precombustion chamber cavity of resorption, the nozzle is laid in the lower end of pre-burning chamber body, and the precombustion chamber epicoele formation pre-chamber cavity of the precombustion chamber cavity of resorption and pre-burning chamber body, the lower end of the nozzle has the injection channel being connected to precombustion chamber cavity of resorption.The gas engine pre-combustion chamber forms larger ignition energy by the burning of the natural gas air Mixture of high concentration, leaner gaseous mixture in the main combustion chamber that ignites, and achievees the purpose that improve complete machine power and the thermal efficiency.
Description
Technical field
The present invention relates to engine arts, especially with regard to a kind of gas engine pre-combustion chamber.
Background technique
For country's high power gas engine majority by the way of conventional ignition plug igniting, ignition energy is low, causes at present
The problem that mixture combustion speed is slow, mixture strength is limited, ultimately causing complete machine power can only achieve same discharge capacity prototype diesel oil
75% to the 80% of machine, whole effective thermal efficiency are generally less than 40%, and for containing resistance in high speed engine or fuel gas
When combustion gas body is more, complete machine power and effective thermal efficiency are lower, discharge worse.
The information disclosed in the background technology section is intended only to increase the understanding to general background of the invention, without answering
When being considered as recognizing or imply that the information constitutes the prior art already known to those of ordinary skill in the art in any form.
Summary of the invention
The purpose of the present invention is to provide a kind of simple and reasonable gas engine pre-combustion chamber, which starts
Machine pre-combustion chamber forms larger ignition energy, in the main combustion chamber that ignites by the burning of the natural gas air Mixture of high concentration
Leaner gaseous mixture can achieve the purpose that improve complete machine power and the thermal efficiency.
To achieve the above object, the present invention provides a kind of gas engine pre-combustion chambers, comprising: high-voltage conducting wires set
Pipe, perforates with high-voltage conducting wires and the check valve mounting hole sealing shroud positioned at high-voltage conducting wires perforation side, the high pressure are led
Thread casing is for covering the gas engine pre-combustion chamber fixed to engine cylinder；Pre-burning chamber body, lower end have pre-burning
Room epicoele, the side above the precombustion chamber epicoele have spark plug mounting hole, and the other side of the top of the precombustion chamber epicoele has
Check valve mounting hole, the check valve mounting hole are connected to by inlet channel with precombustion chamber epicoele；The high-voltage conducting wires casing is fixed
In the upper end of pre-burning chamber body, the high-voltage conducting wires perforation is connected with spark plug mounting hole, and the check valve mounting hole seals upper shield
It is located on check valve mounting hole；Spark plug is laid in the spark plug mounting hole, and protrudes into precombustion chamber epicoele, and high pressure is led
Line is connect with spark plug by high-voltage conducting wires perforation and is lighted a fire；Check valve is mounted in the check valve mounting hole, is used for
Unidirectionally controlled fuel gas enters inside pre-chamber cavity from inlet channel；And nozzle, the upper end have precombustion chamber cavity of resorption, institute
State the lower end that nozzle is laid in pre-burning chamber body, the precombustion chamber epicoele formation precombustion chamber sky of the precombustion chamber cavity of resorption and pre-burning chamber body
Chamber, the lower end of the nozzle have the injection channel being connected to precombustion chamber cavity of resorption, and the high concentration gaseous mixture in pre-chamber cavity is logical
It crosses spark and fills in row and light, form combustion flame in chamber cavity, flame is started by the injection channel penetrating on nozzle
In owner combustion chamber.
In a preferred embodiment, check valve is threadably secured the check valve mounting hole for being mounted on pre-burning chamber body
It is interior.
In a preferred embodiment, injection channel is along circumferentially uniformly distributed multiple of nozzle.
In a preferred embodiment, injection channel is along circumferentially uniformly distributed four of nozzle.
Compared with prior art, gas engine pre-combustion chamber according to the present invention has the following beneficial effects:
1, pre-chamber cavity provides high concentration mixture combustion place, forms larger ignition energy；
2, pre-chamber cavity flame ejects the Weak mixture in the main chamber that ignites, and realizes lean burn, drop
Low emission；
3, faster, complete machine power and effective thermal efficiency are higher for engine gas burning velocity.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the gas engine pre-combustion chamber of first embodiment according to the present invention.
Specific embodiment
With reference to the accompanying drawing, specific embodiments of the present invention will be described in detail, it is to be understood that guarantor of the invention
Shield range is not limited by the specific implementation.
Unless otherwise explicitly stated, otherwise in entire disclosure and claims, term " includes " or its change
Changing such as "comprising" or " including " etc. will be understood to comprise stated element or component, and not exclude other members
Part or other component parts.
As shown in Figure 1, the specific structure of gas engine pre-combustion chamber according to the preferred embodiment of the invention includes: height
Press wire socket 1, check valve 2, pre-burning chamber body 3, nozzle 4 and spark plug 5.Wherein, high-voltage conducting wires casing 1 is for fixing precombustion chamber
Body is covered in engine cylinder, and leakproof one-way valve mounting hole prevents fuel gas from leaking out；Check valve 2 is mounted on by helicitic texture
In pre-burning chamber body 3, enter inside pre-chamber cavity for unidirectionally controlled fuel gas from inlet channel A；Pre-burning chamber body 3 and nozzle
4 form pre-chamber cavity, high concentration mixture combustion place are provided, and lighted by spark plug 5, in chamber cavity
Combustion flame is formed, flame is sprayed into engine main chamber by the injection channel B on nozzle 4, passes through the natural of high concentration
The burning of gas air Mixture forms larger ignition energy, leaner gaseous mixture in the main combustion chamber that ignites, and it is whole can to reach raising
The purpose of machine power and the thermal efficiency.
Wherein, high-voltage conducting wires casing 1 has high-voltage conducting wires perforation and the check valve peace positioned at high-voltage conducting wires perforation side
Hole sealing shroud is filled, high-voltage conducting wires casing 1 is sealed for covering the gas engine pre-combustion chamber fixed to engine cylinder
The check valve mounting hole of pre-burning chamber body 3 prevents fuel gas from leaking out.
The lower end of pre-burning chamber body 3 has precombustion chamber epicoele, for forming pre-chamber cavity with nozzle 4；On precombustion chamber epicoele
The side of side has spark plug mounting hole, for spark plug 5 to be arranged；Pacify with check valve the other side of the top of precombustion chamber epicoele
Hole is filled, for check valve 2 to be arranged, check valve mounting hole is connected to by inlet channel A with precombustion chamber epicoele.
High-voltage conducting wires casing 1 is fixed on the upper end of pre-burning chamber body 3, the high-voltage conducting wires perforation of high-voltage conducting wires casing 1 and spark
Mounting hole conducting is filled in, spark plug 5 is laid in spark plug mounting hole, and protrudes into precombustion chamber epicoele, and high-voltage conducting wires are led by high pressure
Line perforation is connect with spark plug 5 lights a fire.Check valve 2 is mounted in the check valve mounting hole of pre-burning chamber body 3, for unidirectionally controlling
Fuel gas processed enters inside pre-chamber cavity from channel A.The check valve mounting hole sealing upper shield of high-voltage conducting wires casing 1 is located at list
To on valve mounting hole, the check valve mounting hole of sealing pre-burning chamber body 3 prevents fuel gas from leaking out.
Preferably, check valve 2 is threadably secured in the check valve mounting hole for being mounted on pre-burning chamber body 3.
The upper end of nozzle 4 has precombustion chamber cavity of resorption, and nozzle 4 is laid in the lower end of pre-burning chamber body 3, precombustion chamber cavity of resorption and pre-burning
The precombustion chamber epicoele of chamber body 3 forms pre-chamber cavity 6, provides high concentration mixture combustion place.The lower end of nozzle 4 have with it is pre-
The injection channel B of room cavity of resorption connection is fired, the high concentration gaseous mixture in pre-chamber cavity is lighted by spark plug 5, is being burnt
Combustion flame is formed in the cavity of room, flame is sprayed into engine main chamber by the injection channel B on nozzle 4, high-energy
The indoor Weak mixture of flame instantaneous ignition engine main burning realizes lean burn.
Preferably, injection channel B is along circumferentially uniformly distributed multiple of nozzle.
Preferably, injection channel B is along circumferentially uniformly distributed four of nozzle.
To sum up, the gas engine pre-combustion chamber is by the burning of the natural gas air Mixture of high concentration, formed compared with
Big ignition energy, leaner gaseous mixture in the main combustion chamber that ignites can achieve the purpose that improve complete machine power and the thermal efficiency.
The aforementioned description to specific exemplary embodiment of the 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 explaining specific principle of the invention and its actually answering
With so that those skilled in the art can be realized and utilize a variety of different exemplary implementation schemes of the invention and
Various chooses and changes.The scope of the present invention is intended to be limited by claims and its equivalents.
Claims (4)
1. a kind of gas engine pre-combustion chamber characterized by comprising
High-voltage conducting wires casing, perforates with high-voltage conducting wires and the check valve mounting hole positioned at high-voltage conducting wires perforation side seals
Set, the high-voltage conducting wires casing is for covering the gas engine pre-combustion chamber fixed to engine cylinder；
Pre-burning chamber body, lower end have precombustion chamber epicoele, and the side above the precombustion chamber epicoele has spark plug mounting hole, this is pre-
The other side for firing the top of room epicoele has check valve mounting hole, which passes through inlet channel and precombustion chamber epicoele
Connection；The high-voltage conducting wires casing is fixed on the upper end of pre-burning chamber body, and the high-voltage conducting wires perforation is connected with spark plug mounting hole,
The check valve mounting hole sealing upper shield is located on check valve mounting hole；
Spark plug is laid in the spark plug mounting hole, and protrudes into precombustion chamber epicoele, and high-voltage conducting wires are worn by high-voltage conducting wires
Hole connect with spark plug and lights a fire；
Check valve is mounted in the check valve mounting hole, enters pre-burning from inlet channel for unidirectionally controlled fuel gas
Room cavity inside；And
Nozzle, the upper end have precombustion chamber cavity of resorption, and the nozzle is laid in the lower end of pre-burning chamber body, the precombustion chamber cavity of resorption and pre-
The precombustion chamber epicoele for firing chamber body forms pre-chamber cavity, and the lower end of the nozzle has the injection being connected to precombustion chamber cavity of resorption logical
Road, the high concentration gaseous mixture in pre-chamber cavity are lighted by spark plug, and combustion flame is formed in chamber cavity, fire
Flame is sprayed into engine main chamber by the injection channel on nozzle.
2. gas engine pre-combustion chamber as described in claim 1, which is characterized in that the check valve is threadably secured
It is mounted in the check valve mounting hole of pre-burning chamber body.
3. gas engine pre-combustion chamber as described in claim 1, which is characterized in that the injection channel is along nozzle week
To uniformly distributed multiple.
4. gas engine pre-combustion chamber as claimed in claim 3, which is characterized in that the injection channel is along nozzle week
To uniformly distributed four.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910282742.0A CN109989822A (en) | 2019-04-10 | 2019-04-10 | Gas engine pre-combustion chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910282742.0A CN109989822A (en) | 2019-04-10 | 2019-04-10 | Gas engine pre-combustion chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109989822A true CN109989822A (en) | 2019-07-09 |
Family
ID=67132688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910282742.0A Pending CN109989822A (en) | 2019-04-10 | 2019-04-10 | Gas engine pre-combustion chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109989822A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111894726A (en) * | 2020-08-11 | 2020-11-06 | 天津大学 | Diesel engine cold-start jet flow flame auxiliary ignition device and control method thereof |
| CN112127994A (en) * | 2020-10-27 | 2020-12-25 | 湘潭大学 | Heavy oil rotary engine auxiliary ignition device based on hydrogen flame ignition |
| CN112211714A (en) * | 2020-11-27 | 2021-01-12 | 山东交通学院 | Shock wave combustion-supporting precombustion chamber structure of gas engine |
| CN113756932A (en) * | 2020-06-02 | 2021-12-07 | 广州汽车集团股份有限公司 | Pre-combustion chamber structure |
| 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 |
| CN115075987A (en) * | 2021-03-10 | 2022-09-20 | 广州汽车集团股份有限公司 | Pre-combustion chamber fuel gasification hybrid system |
| CN115387898A (en) * | 2022-08-31 | 2022-11-25 | 东风商用车有限公司 | Internal combustion engine and ignition control method thereof |
| US20230040984A1 (en) * | 2020-12-31 | 2023-02-09 | Tianjin University | Air-assisted jet flame ignition device and ignition method thereof |
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| CN205638680U (en) * | 2016-05-09 | 2016-10-12 | 中国石油集团济柴动力总厂 | Gas engine antechamber and mounting structure thereof |
| CN107091145A (en) * | 2017-06-07 | 2017-08-25 | 哈尔滨工程大学 | A kind of precombustion chamber of marine large-diameter gas engine |
| CN109098835A (en) * | 2018-09-29 | 2018-12-28 | 哈尔滨工程大学 | A kind of natural gas engine burning tissues method with high pressure direct injection in precombustion chamber low pressure gas supply and cylinder |
| CN209586504U (en) * | 2019-04-10 | 2019-11-05 | 广西玉柴机器股份有限公司 | Gas engine pre-combustion chamber |
-
2019
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Patent Citations (7)
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| CN103422970A (en) * | 2013-07-17 | 2013-12-04 | 广州柴油机厂股份有限公司 | Ignition device of gas engine utilizing precombustion chamber |
| US20160245151A1 (en) * | 2013-10-21 | 2016-08-25 | Mitsubishi Heavy Industries, Ltd. | Pre-combustion-chamber type gas engine |
| CN105318047A (en) * | 2015-11-18 | 2016-02-10 | 中国船舶重工集团公司第七一一研究所 | One-way valve, gas engine prechamber and gas engine |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113756932A (en) * | 2020-06-02 | 2021-12-07 | 广州汽车集团股份有限公司 | Pre-combustion chamber structure |
| 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 |
| CN111894726A (en) * | 2020-08-11 | 2020-11-06 | 天津大学 | Diesel engine cold-start jet flow flame auxiliary ignition device and control method thereof |
| CN112127994A (en) * | 2020-10-27 | 2020-12-25 | 湘潭大学 | Heavy oil rotary engine auxiliary ignition device based on hydrogen flame ignition |
| CN112211714A (en) * | 2020-11-27 | 2021-01-12 | 山东交通学院 | Shock wave combustion-supporting precombustion chamber structure of gas engine |
| US20230040984A1 (en) * | 2020-12-31 | 2023-02-09 | Tianjin University | Air-assisted jet flame ignition device and ignition method thereof |
| US11661885B2 (en) * | 2020-12-31 | 2023-05-30 | Tianjin University | Air-assisted jet flame ignition device and ignition method thereof |
| CN115075987A (en) * | 2021-03-10 | 2022-09-20 | 广州汽车集团股份有限公司 | Pre-combustion chamber fuel gasification hybrid system |
| CN115075987B (en) * | 2021-03-10 | 2024-02-23 | 广州汽车集团股份有限公司 | Pre-combustion chamber fuel gasification mixing system |
| CN115387898A (en) * | 2022-08-31 | 2022-11-25 | 东风商用车有限公司 | Internal combustion engine and ignition control method thereof |
| CN115387898B (en) * | 2022-08-31 | 2023-12-22 | 东风商用车有限公司 | Internal combustion engine and ignition control method thereof |
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Application publication date: 20190709 |