CN101215987A - Gasoline engine possessing precombustion chamber - Google Patents
Gasoline engine possessing precombustion chamber Download PDFInfo
- Publication number
- CN101215987A CN101215987A CNA2007100329786A CN200710032978A CN101215987A CN 101215987 A CN101215987 A CN 101215987A CN A2007100329786 A CNA2007100329786 A CN A2007100329786A CN 200710032978 A CN200710032978 A CN 200710032978A CN 101215987 A CN101215987 A CN 101215987A
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- CN
- China
- Prior art keywords
- precombustion chamber
- chamber
- main combustion
- combustion chamber
- precombustion
- 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
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- 238000002485 combustion reaction Methods 0.000 claims abstract description 35
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 239000000446 fuel Substances 0.000 abstract description 15
- 239000007789 gas Substances 0.000 description 7
- 239000003921 oil Substances 0.000 description 6
- 238000007599 discharging Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Images
Classifications
-
- 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
- Combustion Methods Of Internal-Combustion Engines (AREA)
Abstract
The invention discloses a petrol motor with a precombustion chamber. A main combustion chamber (2) with a piston (1) is arranged inside the petrol motor; an admission valve (3) is arranged between the main combustion chamber (2) and an admission passage (4); an exhaust valve (10) is arranged between the main combustion chamber (2) and an exhaust passage (6). The admission passage (4) is provided with a second muzzle (5). A precombustion chamber (8) is arranged beside the main combustion chamber (2). The tops of the precombustion chamber (8) and the main combustion chamber (2) are communicated. A spark plug (7) and a muzzle (9) are arranged inside the precombustion chamber (8). The invention has individual design so that the petrol motor can work under the circumstance of large air fuel ratio while the requirement for the power performance of the engine is met, thus significantly improving the fuel economical efficiency of the engine and reducing the discharge of NOx. Accordingly, the invention is highly practical.
Description
Technical field
The present invention relates to a kind of petrol engine with precombustion chamber.
Background technique
For the modern gasoline machine, reducing oil consumption is a big problem being badly in need of solution at present, and increasing air fuel ratio is a way the most direct that reduces oil consumption.But present petrol engine is owing to burnt by the catch fire restriction and can not being implemented in in a big way the air fuel ratio of boundary of mixed gas.Stratified mixture combustion is a kind of means that realize that big air fuel ratio is caught fire, but the higher combustion temperature that produces in this combustion manner can cause the NOx discharging higher, has therefore limited its development.
Summary of the invention
The present invention is directed to the above deficiency of present petrol engine, designed a kind of can in air fuel ratio in a big way, the burning, and in burning, reduce the petrol engine of discharging NOx amount.
This petrol engine is built-in with to be provided with between intake valve and the air outlet flue between the main combustion chamber of piston and the intake duct and is provided with exhaust valve, described intake duct is provided with second nozzle, and the side of described main combustion chamber is provided with precombustion chamber, precombustion chamber is communicated with the chamber top bit of main combustion chamber, is provided with spark plug and nozzle in the precombustion chamber.
The present invention is provided with precombustion chamber in petrol engine, make precombustion chamber the inside mixed gas be in denseer state relatively, be beneficial to engine ignition, the flame spread bigger mixed gas of air fuel ratio in the main combustion chamber that can ignite behind the main combustion chamber, the air fuel ratio scope of work is widened in the main combustion chamber like this, realize engine underpressure burning (λ＞1), greatly improved the fuel economy of motor; Fresh air also can reduce the combustion temperature in the main combustion chamber simultaneously, has greatly reduced the discharging of NOx.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is pre-combustion chamber and scheme of installation;
Fig. 3 is the A-A sectional view of Fig. 2.
Embodiment
As shown in Figure 1, in Gasoline Engine Working Process, nozzle 9 is in (piston stroking upward half the about) oil spout of compression stroke later stage, atomized fuel is drawn close to spark plug 7 under the crowded stream situation of compressed air stream, because precombustion chamber 8 spaces are less, so just formed relative denseer mixed gas in the precombustion chamber, be easy to the petrol engine igniting.There are a large amount of ozones main combustion chamber 2 inside, air fuel ratio λ＞2, and petrol engine igniting back flame spreads to main combustion chamber 2 from precombustion chamber 8, thereby has realized that motor catches fire under the situation of lean air fuel ratio smoothly, promotes the piston acting.Simultaneously, the fresh air in the main combustion chamber 2 can also play the effect that reduces the in-cylinder combustion temperature, can reduce the discharging of NOx greatly.
Simultaneously, this petrol engine also is provided with one second nozzle 5 in intake duct 4, and when petrol engine need provide more powerful, second nozzle 5 oil spout in aspirating stroke had increased fuel oil and Air mixing time, forms uniform mixed gas.This mixed gas can provide power bigger when only depending on nozzle 9 oil spouts after the flame spread ignition that utilizes precombustion chamber 8.So just can utilize the fuel injection quantity of second nozzle 5 to control the concentration of mixed gas in the main combustion chamber 2, thereby control the power output of petrol engine, take into account the power character of petrol engine.
The mounting arrangements of precombustion chamber 8 is with reference to Fig. 2, and precombustion chamber 8 is positioned at the top of main combustion chamber 2, and its surface of internal cavity is smooth curved surface, and described precombustion chamber 8 is positioned at the side and the close air outlet flue 6 of air outlet flue 6.Spark plug 7 in the precombustion chamber 8 is installed in spark plug mounting hole 11 places, away from main combustion chamber 2 positions.Nozzle 9 in the precombustion chamber 8 is installed in nozzle mounting hole 12 places, is positioned at the top of precombustion chamber 8, and the oil spout direction of nozzle 9 is tiltedly pointed to the inboard at spark plug 7 places, so more helps air-flow compiles and roll formation from stream to spark plug.
A kind of method is: precombustion chamber 8 is arranged in the precombustion chamber housing 16, precombustion chamber housing 16 and cylinder body B separate machined, both work in coordination, and fixedly connected be one, both can lean on 13,14 flanged surface connection.
Another kind method is: the cylinder body B that comprises precombustion chamber 8, main combustion chamber 2 can be used as an one piece machine shaping.
As shown in Figure 3, precombustion chamber passage 15, exhaust valve 10, intake valve 3 are taked interlaced arrangement, three's center is constituting a triangle perpendicular to the projection on the plane of the axis of main combustion chamber 2, and conserve space so not only also helps entering and the discharge of waste gas of fresh air.
The unique design that the petrol engine of this invention has makes it can be when taking into account the power character demand of motor, be implemented under the situation than big air fuel ratio and work, improve the fuel economy of motor greatly, and reduced NOx discharging in the burning, therefore meet current needs, have advantages of high practicability.
Claims (6)
1. petrol engine with precombustion chamber, be built-in be provided with between the main combustion chamber (2) of piston (1) and the intake duct (4) intake valve (3), and air outlet flue (6) between be provided with exhaust valve (10), described intake duct (4) is provided with second nozzle (5), it is characterized in that: the side of described main combustion chamber (2) is provided with precombustion chamber (8), precombustion chamber (8) is communicated with the chamber top bit of main combustion chamber (2), is provided with spark plug (7) and nozzle (9) in the precombustion chamber (8).
2. a kind of petrol engine with precombustion chamber according to claim 1 is characterized in that: described precombustion chamber (8) is positioned at the top of main combustion chamber (2), and described precombustion chamber (8) is positioned at the side and the close air outlet flue (6) of air outlet flue (6).
3. a kind of petrol engine with precombustion chamber according to claim 1 is characterized in that: described precombustion chamber (8) is arranged in the precombustion chamber housing (16), and precombustion chamber housing (16) is fixedly connected with cylinder body (B) to be one.
4. a kind of petrol engine with precombustion chamber according to claim 1 and 2 is characterized in that: the cylinder body (B) that comprises precombustion chamber (8), main combustion chamber (2) is integral type integral body.
5. a kind of petrol engine according to claim 1 and 2 with precombustion chamber, it is characterized in that: the spark plug (7) in the described precombustion chamber (8) setting is located away from main combustion chamber (2) position, nozzle (9) is positioned at the top of precombustion chamber (8), and the oil spout direction of nozzle (9) is tiltedly pointed to the inboard at spark plug (7) place.
6. a kind of petrol engine according to claim 1 and 2 with precombustion chamber, it is characterized in that: described precombustion chamber (8) is communicated with main combustion chamber (2) by precombustion chamber passage (15), and described precombustion chamber passage (15), exhaust valve (10), intake valve (3) three's center is perpendicular to the triangle of projection formation on the plane of the axis of main combustion chamber (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100329786A CN101215987A (en) | 2007-12-29 | 2007-12-29 | Gasoline engine possessing precombustion chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100329786A CN101215987A (en) | 2007-12-29 | 2007-12-29 | Gasoline engine possessing precombustion chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101215987A true CN101215987A (en) | 2008-07-09 |
Family
ID=39622490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100329786A Pending CN101215987A (en) | 2007-12-29 | 2007-12-29 | Gasoline engine possessing precombustion chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101215987A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012000307A1 (en) * | 2010-06-28 | 2012-01-05 | 大连理工大学 | Multi-fuel pre-mixed combustion system of internal combustion engine |
| CN106014669A (en) * | 2015-02-27 | 2016-10-12 | Ge延巴赫两合无限公司 | Cylinder head |
| US10100714B2 (en) | 2015-02-27 | 2018-10-16 | Ge Jenbacher Gmbh & Co Og | Cylinder head |
| CN113006928A (en) * | 2021-03-22 | 2021-06-22 | 西安交通大学 | Engine with precombustion chamber and working mode thereof |
-
2007
- 2007-12-29 CN CNA2007100329786A patent/CN101215987A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012000307A1 (en) * | 2010-06-28 | 2012-01-05 | 大连理工大学 | Multi-fuel pre-mixed combustion system of internal combustion engine |
| CN106014669A (en) * | 2015-02-27 | 2016-10-12 | Ge延巴赫两合无限公司 | Cylinder head |
| US10100714B2 (en) | 2015-02-27 | 2018-10-16 | Ge Jenbacher Gmbh & Co Og | Cylinder head |
| CN106014669B (en) * | 2015-02-27 | 2019-01-11 | Ge延巴赫两合无限公司 | Cylinder head |
| CN106014670B (en) * | 2015-02-27 | 2019-05-31 | Ge延巴赫两合无限公司 | Cylinder head |
| CN113006928A (en) * | 2021-03-22 | 2021-06-22 | 西安交通大学 | Engine with precombustion chamber and working mode thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20080709 |