CN106103933A - Pre-chamber arrangement, cylinder head and piston engine - Google Patents
Pre-chamber arrangement, cylinder head and piston engine Download PDFInfo
- Publication number
- CN106103933A CN106103933A CN201480075591.7A CN201480075591A CN106103933A CN 106103933 A CN106103933 A CN 106103933A CN 201480075591 A CN201480075591 A CN 201480075591A CN 106103933 A CN106103933 A CN 106103933A
- Authority
- CN
- China
- Prior art keywords
- cylinder head
- body part
- nozzle segment
- chamber
- precombustion chamber
- 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
- 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
- F02B19/1004—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder details of combustion chamber, e.g. mounting arrangements
-
- 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
- F02B19/1004—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder details of combustion chamber, e.g. mounting arrangements
- F02B19/1014—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder details of combustion chamber, e.g. mounting arrangements design parameters, e.g. volume, torch passage cross sectional area, length, orientation, or the like
-
- 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
-
- 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
Abstract
Include the body part (1) forming first end (4A) of precombustion chamber (4) for piston-engined pre-chamber arrangement and for fluid is discharged to from precombustion chamber the single nozzle segment (2) of the main chamber (7) of cylinder.Nozzle segment (2) is arranged as the conduit (6) being projected in body part (1) and including at least one nozzle opening (5) and be used for setting up fluid communication between nozzle opening (5) and precombustion chamber (4), and body part (1) includes for support body part (1) in the longitudinal direction of the cylinder against the support surface (9) of cylinder head (8) contact surface (10).
Description
Technical field
The present invention relates to a kind of filling for piston-engined precombustion chamber for preamble according to claim 1
Put.The invention still further relates to a kind of cylinder head and piston engine.
Background technology
Internal combustion engine can be equipped with precombustion chamber, also referred to as precombustion chamber.In engine with antechamber, each cylinder equipped with
Precombustion chamber, and partly or entirely fuel is imported into precombustion chamber.Depending on engine, fuel or can be able to be used by spontaneous combustion
Spark plug or other device are used for lighting fuel.Therefore burning starts in precombustion chamber, but the major part of burning occurs
In cylinder outside precombustion chamber.Pre-combustion chamber is particularly useful in lean burn engines, and wherein part of fuel is imported into pre-burning
In room and part of fuel mixed with air before intake valve.For example can use this in spark ignition gas engine
The device of type.Compared with the mixture in cylinder, the gas-air mixture in precombustion chamber is denseer.Dense mixing in precombustion chamber
Compound passes through spark ignitor and the mixture in the flame ignition cylinder of precombustion chamber.
The shortcoming of engine with antechamber is the high temperature in precombustion chamber, and for example, the high temperature in precombustion chamber causes high temperature corrosion.
Especially in gas engine, precombustion chamber bears high geopressure gradient and maximum pressure.This is to the material of precombustion chamber and structure
Set very high standard.
Content of the invention
It is an object of the invention to provide a kind of for piston-engined improved pre-chamber arrangement, it includes at least one
The cylinder head of one end of cylinder and closed cylinder.The characterizing features that precombustion according to the present invention is arranged is in claim 1
Characteristic in be given.Other purposes of the present invention are to provide a kind of improved cylinder head and piston engine.
Define the precombustion chamber with the first end and the second end according to the pre-chamber arrangement of the present invention, and can be arranged into
In cylinder head thus the second end of precombustion chamber than the first end closer to cylinder.Device includes the body forming the first end of precombustion chamber
Part and the single nozzle segment for being expelled to the main chamber of cylinder fluid from precombustion chamber.Nozzle segment is arranged
For being projected in body part and including at least one nozzle opening and flow for setting up between nozzle opening and precombustion chamber
The conduit of body connection.Body part includes in the longitudinal direction of the cylinder body part being supported the contact against cylinder head
The stayed surface on surface.
Owing to being supported for defining the upper end of precombustion chamber against the body part of cylinder head, in the top of precombustion chamber not
Need packing ring.Therefore risk of leakage can be reduced.Need less wall thickness in the top of precombustion chamber, start in spark ignition
In the case that machine uses precombustion chamber, which improve the cooling of spark plug.Need to stand the nozzle of higher temperature than body part
Part can be made up of the material different from body part.It is thus desirable to the material of small amount of special steel or other costlinesses.Should
Structure eliminates the needs for major diameter liner, and it is thus desirable to less pretightning force is to be attached to gas by pre-chamber arrangement
On cylinder cap.Therefore the load in the central area of cylinder head is reduced.Precombustion chamber is also easier to align with cylinder head.
Brief description
Referring to the drawings, embodiments of the invention are described below in more detail, wherein
Fig. 1 shows the sectional view of the pre-chamber arrangement being connected with cylinder head,
Fig. 2 shows the sectional view of the pre-chamber arrangement from other direction,
Fig. 3 shows details A of Fig. 1, and
Fig. 4 shows details B of Fig. 1.
Detailed description of the invention
Fig. 1 shows the piston-engined pre-chamber arrangement for being connected with cylinder head 8.Fig. 2 is the opposing party
To identical pre-chamber arrangement.Engine is large combustion engines, and such as boats and ships are with main or assisted engine or for sending out
The engine that the power plant of electricity uses.Engine is equipped with multiple cylinders, and each cylinder of engine is equipped with precombustion chamber.Send out
Each cylinder of motivation is equipped with cylinder head 8, and it closes the upper end of cylinder.Term " on " this refers to cylinder away from bent axle
End.Cylinder does not needs to be arranged vertically, but they can become some other angles relative to the base portion of engine.Main chamber
7 are formed at cylinder interior between cylinder head 8 and piston.In the examples in the drawings, engine is that spark ignition gas starts
Machine, wherein part fuel gas is directed to air intake duct forming lean air/fuel mixture, and part of fuel is imported into pre-
Combustion room 4 is to form dense mixture, and it is by spark ignitor.Relatively lean mixture in main chamber 7 is formed by precombustion chamber 4
The burning of denseer mixture light.
Each cylinder of engine is equipped with having first end 4A i.e. upper end, and the second end 4B i.e. precombustion chamber of lower end
4.Therefore first end 4A orientates as than the second end 4B away from cylinder and main chamber 7.In the examples in the drawings, precombustion chamber
4 almost sphericals, but precombustion chamber 4 alternatively can have different shapes, for example ellipsoidal shape.Cylinder head 8 equipped with
For accommodating the space 11 of precombustion chamber 4.
Pre-chamber arrangement includes body part 1 and nozzle segment 2.Body part 1 and nozzle segment 2 are single parts.
Body part 1 defines the major part of precombustion chamber 4, including the first end 4A of precombustion chamber 4.The top of precombustion chamber 4 is therefore by this
Body portion 1 limits.Body part 1 at least defines the first half of precombustion chamber 4.Nozzle segment 2 defines the second end of precombustion chamber 4
Portion 4B, and therefore the bottom of precombustion chamber 4 limited by nozzle segment 2.Body part 1 and nozzle segment 2 together define entirely
Precombustion chamber 4.Precombustion chamber 4 can also limit only by body part 1.Owing to body part 2 defines the first end of precombustion chamber 4
4A, does not needs liner in the top of precombustion chamber 4.Therefore the risk that cooling water is revealed is reduced.Nozzle segment 2 by special steel or
Other suitable materials are made, and it bears the high moderate pressure in precombustion chamber 4.Owing to can arrange more for the top of precombustion chamber 4
Effectively cooling down, body part 1 can be made by compared with cheap material, such as steel.Owing to nozzle segment 2 only defines precombustion chamber 4
Fraction, the only very fraction of pre-chamber arrangement needs to be made up of expensive material, and the major part of pre-chamber arrangement
Can be made up of cheap material.Nozzle segment 2 and/or body part 1 can be coated.Owing to nozzle segment 2 needs than this
Body portion 1 bears higher temperature, and the coating of nozzle segment 2 can be by the coating of the material or body part 1 with body part 1
Different materials is made.
Nozzle segment 2 is projected in body part 1 and extends to combustion chamber 7 from body part 1.In body part 1
The part of nozzle segment 2 is taper, is slightly tapered towards main chamber 7.Cylinder head 8 is led to equipped with opening 12, nozzle segment 2
Cross this opening to be projected in combustion chamber 7.The opening 12 of cylinder head 8 is tapered slightly, therefore corresponds to the form of nozzle segment 2.
Nozzle segment 2 is from introduced above to opening 12.The diameter of nozzle segment 2 is slightly smaller than the diameter of opening 12.Select diameter thus
When cylinder head 8 and nozzle segment 2 at ambient temperature when, i.e. when engine does not run, in nozzle segment 2 and cylinder head 8
Between there is gap 19, i.e. small-gap suture.When the engine is running, due to the more effective cooling of cylinder head 8, the temperature of cylinder head 8
Degree rises to the temperature less than nozzle segment 2.When cylinder head 8 and nozzle segment 2 at the working temperature when, nozzle segment 2 and gas
Cylinder cap 8 contacts.When at the working temperature, between nozzle segment 2 and cylinder head 8, even there is shrink-fit.Nozzle segment 2 profit
It is attached to body part 1 by shrink-fit.Nozzle segment 2 is discharged to from precombustion chamber 4 by this conduit equipped with conduit 6, fluid
Combustion chamber 7.Conduit 6 is divided into several branch road 6A, and several branch road 6A terminate at nozzle opening 5, and nozzle opening 5 leads to combustion chamber 7
In the outer surface of nozzle segment 2.Replacing brasnch conduct 6, nozzle segment 2 can be equipped with some conduits, is each attached to spray
Mouth opening.Replacing some nozzle openings 5, nozzle segment 2 can be equipped with cannelure, and one or more conduits are connected to cannelure simultaneously
And fluid is discharged to combustion chamber 7 by described cannelure.Due to the simple shape of nozzle segment 2, its its be easy to and inexpensively
Ground manufactures.
Body part 1 is equipped with stayed surface 9, and it is disposed against the contact surface 10 of cylinder head 8.Cylinder head 8
Contact surface 10 support body part 1 in the longitudinal direction of the cylinder.The stayed surface 9 of body part 1 is annular.Work as spray
When mouth portion 2 is inserted into body part 1, stayed surface 9 is around nozzle segment 2.Stayed surface 9 is positioned at the conduit 6 of nozzle segment 2
In region around, i.e. be less than precombustion chamber 4.Liner 3 is arranged in the contact surface 10 of cylinder head 8 and the support table of body part 1
Between face 9.Body part 1 utilizes pretension bolt 18 to be attached to cylinder head 8.Bolt 18 does not directly contact with body part 1, but
Body part 1 be sandwiched in cylinder head 8 and be arranged in above body part 1 for example for directing fuel in precombustion chamber 4
Part 21, between 22.Cooling jacket is formed in the space 11 between body part 1 and cylinder head 8.Cooling water can be by entering
Mouth pipe 13 is imported in cooling jacket and is discharged from cooling jacket by outlet 14.Due to liner 3 adjoining nozzles part 2 simultaneously
And it is not about precombustion chamber 4, it has relatively small diameter.It is thus desirable to pre-chamber arrangement is attached to gas by less prestretching force
Cylinder cap 8 and make the connection between pre-chamber arrangement and cylinder head 8 be fluid-tight.The central area of cylinder head 8 because of
This load is less.Contact surface 9 carries that to act on the institute of pre-chamber arrangement in the longitudinal direction of the cylinder strong.
Pre-chamber arrangement is equipped with intake valve 16 and cartridge 15, and intake valve 16 is connected to the first end of precombustion chamber 4 by it
4A.By cartridge 15, fuel gas can be directed to precombustion chamber 4.Pre-chamber arrangement is further equipped with (not showing for spark plug
Go out) space 17.Spark plug is for lighting the air/fuel mixture in precombustion chamber 4.Owing to the top in precombustion chamber does not serve as a contrast
Pad, the wall of precombustion chamber 4 can be relatively thin, and the cooling of spark plug is effective.
It will be understood to those of skill in the art that the present invention is not intended to be limited to above-described embodiment, but can want in appended right
Change in the range of asking.
Claims (14)
1. being used for a piston-engined pre-chamber arrangement, described piston engine includes at least one cylinder and closes described
The cylinder head (8) of one end of cylinder, described pre-chamber arrangement formed precombustion chamber (4), described precombustion chamber have the first end (4A) and
Second end (4B) and can be arranged in described cylinder head (8) and make described second end (4B) of described precombustion chamber (4) compare institute
State the close described cylinder of the first end (4A), wherein
-described pre-chamber arrangement includes the body part (1) forming first end (4A) of described precombustion chamber (4) and for flowing
The single nozzle segment (2) that body is discharged to the main chamber (7) of described cylinder from described precombustion chamber (4),
-described nozzle segment (2) is arranged as being projected in described body part (1) and include at least one nozzle opening (5)
And it is used for setting up the conduit (6) of fluid communication between described nozzle opening (5) and described precombustion chamber (4), and
-described body part (1) includes the contact surface (10) on the longitudinal direction of described cylinder against described cylinder head (8)
And support the stayed surface (9) of described body part (1).
2. device according to claim 1, wherein, described body part (1) defines the main portion of described precombustion chamber (4)
Point.
3. device according to claim 1 and 2, wherein, described second end (4B) of described precombustion chamber (4) is by described nozzle
Partly (2) are formed.
4. device according to any one of claim 1 to 3, wherein, described nozzle segment (2) is attached directly to described
Body part (1).
5. according to device in any one of the preceding claims wherein, wherein, described nozzle segment (2) is attached by shrink-fit
To described body part (1).
6. according to device in any one of the preceding claims wherein, wherein, described nozzle segment (2) by with described body part
(1) different materials is made.
7. according to device in any one of the preceding claims wherein, wherein, described nozzle segment (2) is provided with coating, described
Coating is made up of the material different from the material on the surface forming described body part (1).
8. according to device in any one of the preceding claims wherein, wherein, described body part (1) and described nozzle segment
(2) whole precombustion chamber (4) is formed together.
9. according to device in any one of the preceding claims wherein, wherein, described stayed surface (9) is positioned at described nozzle segment
(2) in described conduit (6) region around.
10. according to device in any one of the preceding claims wherein, wherein, described device includes against described body part
(1) liner (3) that described stayed surface (9) is arranged.
11. 1 kinds of cylinder head (8), described cylinder head includes the pre-chamber arrangement according to aforementioned any claim.
12. cylinder head according to claim 11 (8), wherein, described pre-chamber arrangement is arranged in described cylinder head (8)
Thus when described cylinder head (8) and described nozzle segment (2) at ambient temperature when described nozzle segment (2) outer surface with
Form gap (19) between described cylinder head (8).
13. cylinder head according to claim 12 (8), wherein, the outer surface of described nozzle segment (2) is configured to when described
Cylinder head (8) and described nozzle segment (2) at the working temperature when described outer surface contact with described cylinder head (8).
14. 1 kinds of piston engines, described piston engine includes the cylinder according to according to any one of claim 11 to 13
Lid (8).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/FI2014/050186 WO2015136143A1 (en) | 2014-03-13 | 2014-03-13 | Prechamber arrangement, cylinder head and piston engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106103933A true CN106103933A (en) | 2016-11-09 |
Family
ID=50434218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480075591.7A Pending CN106103933A (en) | 2014-03-13 | 2014-03-13 | Pre-chamber arrangement, cylinder head and piston engine |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3117082A1 (en) |
| KR (1) | KR20160129016A (en) |
| CN (1) | CN106103933A (en) |
| WO (1) | WO2015136143A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109424421A (en) * | 2017-09-04 | 2019-03-05 | 曼柴油机和涡轮机欧洲股份公司 | Precombustion chamber arrangement |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7257236B2 (en) * | 2019-04-22 | 2023-04-13 | 三菱重工エンジン＆ターボチャージャ株式会社 | pre-chamber engine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1563681A (en) * | 2004-03-18 | 2005-01-12 | 大连理工大学 | Igniting combustion system of engine preburning chamber |
| WO2006043818A1 (en) * | 2004-09-27 | 2006-04-27 | Rolls-Royce Marine As, Engines - Bergen | Prechamber for a gas engine |
| WO2009060119A1 (en) * | 2007-11-09 | 2009-05-14 | Wärtsilä Finland Oy | Prechamber arrangement of a combustion engine |
| WO2011101541A1 (en) * | 2010-02-22 | 2011-08-25 | Wärtsilä Finland Oy | Pre-chamber arrangement for a combustion engine |
| US20120103302A1 (en) * | 2010-11-01 | 2012-05-03 | William Attard | Turbulent jet ignition pre-chamber combustion system for spark ignition engines |
| US20130139784A1 (en) * | 2011-12-01 | 2013-06-06 | Cummins Intellectual Property, Inc. | Prechamber device for internal combustion engine |
-
2014
- 2014-03-13 WO PCT/FI2014/050186 patent/WO2015136143A1/en active Application Filing
- 2014-03-13 KR KR1020167025055A patent/KR20160129016A/en not_active Application Discontinuation
- 2014-03-13 EP EP14715036.1A patent/EP3117082A1/en not_active Withdrawn
- 2014-03-13 CN CN201480075591.7A patent/CN106103933A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1563681A (en) * | 2004-03-18 | 2005-01-12 | 大连理工大学 | Igniting combustion system of engine preburning chamber |
| WO2006043818A1 (en) * | 2004-09-27 | 2006-04-27 | Rolls-Royce Marine As, Engines - Bergen | Prechamber for a gas engine |
| WO2009060119A1 (en) * | 2007-11-09 | 2009-05-14 | Wärtsilä Finland Oy | Prechamber arrangement of a combustion engine |
| WO2011101541A1 (en) * | 2010-02-22 | 2011-08-25 | Wärtsilä Finland Oy | Pre-chamber arrangement for a combustion engine |
| US20120103302A1 (en) * | 2010-11-01 | 2012-05-03 | William Attard | Turbulent jet ignition pre-chamber combustion system for spark ignition engines |
| US20130139784A1 (en) * | 2011-12-01 | 2013-06-06 | Cummins Intellectual Property, Inc. | Prechamber device for internal combustion engine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109424421A (en) * | 2017-09-04 | 2019-03-05 | 曼柴油机和涡轮机欧洲股份公司 | Precombustion chamber arrangement |
| CN109424421B (en) * | 2017-09-04 | 2023-01-06 | 曼恩能源方案有限公司 | Pre-chamber assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2015136143A1 (en) | 2015-09-17 |
| EP3117082A1 (en) | 2017-01-18 |
| KR20160129016A (en) | 2016-11-08 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161109 |
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| WD01 | Invention patent application deemed withdrawn after publication |