CN107143416B - Water cooling air-cooled type pre-burning ignition system - Google Patents
Water cooling air-cooled type pre-burning ignition system Download PDFInfo
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- CN107143416B CN107143416B CN201710176569.7A CN201710176569A CN107143416B CN 107143416 B CN107143416 B CN 107143416B CN 201710176569 A CN201710176569 A CN 201710176569A CN 107143416 B CN107143416 B CN 107143416B
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- cooling
- cooling water
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P1/00—Air cooling
- F01P1/06—Arrangements for cooling other engine or machine parts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P1/00—Air cooling
- F01P1/06—Arrangements for cooling other engine or machine parts
- F01P1/10—Arrangements for cooling other engine or machine parts for cooling fuel injectors or sparking-plugs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P3/12—Arrangements for cooling other engine or machine parts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P3/12—Arrangements for cooling other engine or machine parts
- F01P3/16—Arrangements for cooling other engine or machine parts for cooling fuel injectors or sparking-plugs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/02—Controlling of coolant flow the coolant being cooling-air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
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- 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
The present invention provides a kind of water cooling air-cooled type pre-burning ignition systems, have the feature that, comprising: pre-chamber cavity shell, insertion is in the lumen；The precombustion chamber seat of honour, in the lumen, inside has the through hole for installing spark plug for setting；Flame-thrower nozzle is removably mounted on pre-chamber cavity shell；Spark plug pitman is arranged in through hole；Precombustion chamber water jacket covers on pre-chamber cavity shell and the precombustion chamber seat of honour；Air inlet unit and cooling water inlet unit.Water jacket air-cooled type pre-burning ignition system of the invention can not only cooling to the precombustion chamber seat of honour, spark plug, pre-chamber cavity shell and nozzle, heat dissipation, and it can be realized and be alternately passed through cooling air and cooling water, the case where pre-chamber cavity shell can be prevented to be quenched, increases its service life.
Description
Technical field
The present invention relates to internal combustion engines, and in particular to a kind of pre-burning ignition system of internal combustion engine.
Background technique
Huge discharge gas internal-combustion engine generally uses precombustion-chamber ignition technology, after conveying a small amount of fuel gas to precombustion chamber,
Spark plug in pre-burning room housing generates spark ignition fuel gas and the mixture of air generates flame and sprayed by nozzle,
The flame of ejection ignites a large amount of fuel gas mixture, and then work by combustion in a combustion chamber.
In the prior art, the cylinder head of internal combustion engine is fitted closely with pre-burning room housing, and it is biggish to form an integral thickness
Structure, pre-burning room housing almost completely cut off with the external world, and heat dissipation effect is very poor, and makes precombustion chamber after the work of a period of time, in advance
The temperature of combustion room housing is up to several Baidu, while the temperature of spark plug is also very high.
The high temperature of pre-burning room housing will appear many problems, on the one hand, it is mixed that excessively high temperature is possible to reach fuel gas
The burning point for closing object, such that fuel gas mixture will burn immediately when contacting with shell, without by spark plug
The control of igniting, that is to say, that the pre-burning room housing of high temperature can to burn always inside gas internal-combustion engine, and cannot be by spark
Plug lights a fire to normally control simultaneously work by combustion, i.e., cannot normally work.On the other hand, excessively high temperature can make pre-
Combustion room nozzle melts damage because of overheat or the direction of spray orifice shifts, and leads to internal combustion engine cisco unity malfunction；And
The service life of spark plug can also greatly shorten.In addition, the high temperature of spark plug can also make dangerous, fire of gently then leaping up of lighting a fire
Phenomenon, more serious words, may burst because of thermal deformation.
In order to cool down to pre-burning room housing and spark plug, a kind of method is to carry out individual water cooling, however, the boiling of water
Point is 100 DEG C at normal atmospheric pressure, when the pre-burning room housing of cooling water and up to several Baidu is contacted, pre-chamber cavity shell
Body occurs to be quenched and is possible to damage, so that the service life of pre-chamber cavity shell substantially reduces；Another method is
Progress is individually air-cooled, and still, the specific heat capacity of air is very small, needs to be passed through when cooling down to pre-burning room housing a large amount of cold
But air, a large amount of cooling air can dilute gas concentration in pre-chamber cavity, shorten so that the flame that pre-chamber cavity sprays becomes smaller,
Jet power is insufficient, so that the indoor gaseous mixture that burns can't burn completely.Even precombustion chamber gaseous mixture is excessively dilute and cause pre-
Combustion room cannot light a fire.
Summary of the invention
The present invention is to carry out to solve the above-mentioned problems, and it is an object of the present invention to provide a kind of radiating efficiency is high, service life
Long, the water cooling that can be passed through cooling water and cooling air alternately to be cooled down to spark plug, precombustion chamber nozzle, be radiated is empty
Cold type pre-burning ignition system.
The present invention provides a kind of water cooling air-cooled type pre-burning ignition systems, for the internal combustion engine for the cylinder head with inner cavity
Heat dissipation characterized by comprising pre-chamber cavity shell, in the lumen, inside has pre-chamber cavity for insertion；The precombustion chamber seat of honour, if
It sets in the lumen, one end is connect with pre-chamber cavity shell, and inside has the through hole for installing spark plug；Flame-thrower nozzle, can
It is releasably mounted on pre-chamber cavity shell, including the cylindrical tube with cavity；Spark plug pitman is arranged in through hole
Interior, one end is connect with spark plug, has first annular gap between the spark plug pitman and the inner wall at the precombustion chamber seat of honour, this
One annular gap is as air inlet channel；Precombustion chamber water jacket covers on pre-chamber cavity shell and the precombustion chamber seat of honour, one end
It is provided with first through hole between outer wall and the inner wall of cylinder head, the first through hole is as intake tunnel；Air inlet unit, passes through
Air inlet pipeline is connected to air inlet channel, for sucking extraneous air and blasting air into air inlet channel；With
And cooling water inlet unit, there is water inlet end and water outlet, for conveying cooling water, including the water circulation being connected to intake tunnel
Pipeline and the water circulating pump being arranged on the water-circulating pipe road, wherein the flame that a plurality of perforation is provided on cylindrical tube is logical
Several nozzle cooling water channels in road and the setting that is staggered with a plurality of passage of flame, the inner wall and pre-chamber cavity shell of precombustion chamber water jacket
The outer wall of body has the second annular gap, which is connected to as the first cooling water channel with nozzle cooling water channel, in advance
It fires in the wall at the room seat of honour and is provided with multiple second through-holes, for second through-hole as the second cooling water channel, one end is cooling with first
Water channel is connected to, and is additionally provided at least one third through-hole, one end of the third through-hole and air inlet in the wall at the precombustion chamber seat of honour
Channel connection, the other end are connected to pre-chamber cavity, and intake tunnel is introduced into cooling water into nozzle cooling water channel by water circulation pipe,
The cooling water is flowed into the first cooling water channel from nozzle cooling water channel, then after being flowed into the second cooling water channel from the first cooling water channel
Discharge, air inlet unit are blasted air into air inlet channel by air inlet pipeline from after ambient inlet air, air
Entered to after third through-hole from air inlet channel and enter pre-chamber cavity from third through-hole again, and by after pre-chamber cavity from flame
Channel discharge.
In water cooling air-cooled type pre-burning ignition system provided by the invention, it can also have the feature that, further includes: extremely
Few two control valves are separately positioned on air inlet pipeline and water-circulating pipe road, for controlling.
In water cooling air-cooled type pre-burning ignition system provided by the invention, it can also have the feature that, further includes: extremely
Few two controllers, accordingly connect, for controlling the open and close of control valve with control valve.
It in water cooling air-cooled type pre-burning ignition system provided by the invention, can also have the following features: wherein, control
Device is time controller, between the duration and time of the on-off for controlling air inlet unit and cooling water inlet unit
Every.
It in water cooling air-cooled type pre-burning ignition system provided by the invention, can also have the feature that, further includes: pre-
Chamber pressure block is fired, is fixedly connected with the other end at the precombustion chamber seat of honour, for fixing the precombustion chamber seat of honour and precombustion chamber water jacket, is arranged thereon
There is air inlet hole, one end of the air inlet hole is connected to air inlet channel, and the other end is connected to air inlet pipeline.
In water cooling air-cooled type pre-burning ignition system provided by the invention, it can also have the following features: wherein, air
Air admission unit further includes air accumulator, which is connected to by air inlet pipeline with air inlet channel, is used for storing compressed air
And it provides air in air inlet channel.
In water cooling air-cooled type pre-burning ignition system provided by the invention, it can also have the following features: wherein, air
Air admission unit further includes air compressor, which is connected to air accumulator, for compressing and storing extraneous air
Into air accumulator.
In water cooling air-cooled type pre-burning ignition system provided by the invention, wherein air inlet can also have the following features:
Valve for pressure difference is provided on pipeline, which is used to control the admission pressure on air inlet pipeline.
In water cooling air-cooled type pre-burning ignition system provided by the invention, it can also have the following features: wherein, cylinder
Tool is there are six spray orifice on the peripheral wall of cylinder, on the peripheral wall for the cylindrical tube that this six spray orifices are equably arranged in sustained height, spray
Hole is as passage of flame.
In water cooling air-cooled type pre-burning ignition system provided by the invention, it can also have the following features: wherein, cylinder
The inner wall of lid lower part is provided with slot block, and first through hole is arranged on slot block.
The action and effect of invention
Related water cooling air-cooled type pre-burning ignition system according to the present invention, because the pre-burning ignition system has precombustion chamber
Cavity shell, the precombustion chamber seat of honour, flame-thrower nozzle, spark plug pitman, precombustion chamber water jacket, air inlet unit and cooling water water inlet
Unit, one side intake tunnel can be introduced cooling water to nozzle cooling water channel by water circulation pipe, and cooling water is then from nozzle
Cooling water channel is flowed into the first cooling water channel, then is discharged after being flowed into the second cooling water channel from the first cooling water channel；On the other hand,
Air inlet unit is blasted air into air inlet channel by air inlet pipeline from after ambient inlet air, and air is from air
Inlet channel, which enters to after third through-hole, enters pre-chamber cavity from third through-hole again, and by being discharged after pre-chamber cavity from spray orifice.
Also, air intake conduit and water circulation pipe can be controlled by controller, so, water jacket air-cooled type pre-burning igniting of the invention
System can not only cooling to the precombustion chamber seat of honour, spark plug, pre-chamber cavity shell and nozzle, heat dissipation, and can be realized
Alternating is passed through cooling air and cooling water, pre-chamber cavity shell is pre-chilled by first leading to cooling air, then be passed through cooling water into one
Step cooling, the case where so as to prevent pre-chamber cavity shell to be quenched, increases its service life.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of water cooling air-cooled type pre-burning ignition system in the embodiment of the present invention；
Fig. 2 is the cutaway view Amplified image in the direction B-B in Fig. 1；
Fig. 3 is the cutaway view Amplified image in the direction C-C in Fig. 1；
Fig. 4 is the structural schematic diagram of the embodiment of the present invention Flame nozzle, wherein Fig. 4 a is facing for flame-thrower nozzle
Figure, Fig. 4 b are the top view of Fig. 4 a, and Fig. 4 c is the cross-sectional view in the direction D-D in Fig. 4 b, and Fig. 4 d is the section view in the direction E-E in Fig. 4 b
Figure, Fig. 4 e are the cross-sectional view in the direction F-F in Fig. 4 a；And
Fig. 5 is the structural schematic diagram of water cooling air-cooled type pre-burning ignition system in variation of the invention.
Specific embodiment
It is real below in order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention
Example combination attached drawing is applied to be specifically addressed water cooling air-cooled type pre-burning ignition system of the invention.
Fig. 1 is the structural schematic diagram of water cooling air-cooled type pre-burning ignition system in the embodiment of the present invention.
As shown in Figure 1, water cooling air-cooled type pre-burning ignition system 100 is used to radiate for internal combustion engine (not shown), and interior
There is inner cavity in the cylinder head 200 of combustion engine.Water cooling air-cooled type pre-burning ignition system 100 includes pre-chamber cavity shell 10, precombustion chamber
It is the seat of honour 20, flame-thrower nozzle 30, spark plug pitman 40, precombustion chamber water jacket 50, precombustion chamber briquetting 60, air inlet unit 70, cold
But water inlet unit 80, control valve 90 and controller (not shown).
Pre-chamber cavity shell 10 is vertically embedded in the inner cavity of cylinder head 200, and it is in back taper that its inside, which has one,
Pre-chamber cavity 11, be welded with spiral radiating fin (not shown), the heat dissipation on the outer wall of pre-chamber cavity shell 10
Fin is used to enhance the heat transfer of pre-chamber cavity shell 10.
Fig. 2 is the cutaway view Amplified image in the direction B-B in Fig. 1.
Fig. 3 is the cutaway view Amplified image in the direction C-C in Fig. 1.
As shown in Figure 1, 2, 3, the precombustion chamber seat of honour 20 is mounted in the inner cavity of cylinder head 200, its lower end and pre-chamber cavity
The upper end of shell 10 is sleeved and fixed, and the inside at the precombustion chamber seat of honour 20 has through hole, which is used to install spark plug 21, fire
The lower end of flower plug 21 and 20 internal whorl of the precombustion chamber seat of honour seal.Between the inner wall and spark plug pitman 40 at the precombustion chamber seat of honour 20
With first annular gap, the first annular gap is as air inlet channel 22.It is additionally provided in the wall at the precombustion chamber seat of honour 20
Multiple second through-holes 23, second through-hole 23 are used as the second cooling water channel.In addition, being provided at least in the wall at the precombustion chamber seat of honour 20
The upper end of one third through-hole 24, third through-hole 24 is connected with air inlet channel 22, the lower end of third through-hole 24 and pre-burning
Chamber 11 is connected.In the present embodiment, there are four third through-holes 24, there are six the second through-holes 23, four third through-holes 24,
Two through-holes 23 are circumferentially arranged in the wall at the precombustion chamber seat of honour 20.
Also set up in the wall at the precombustion chamber seat of honour 20 there are two fourth hole 25, two fourth holes 25 and extraneous combustion gas into
Feed channel (not shown) is connected, and two fourth holes 25 are as gas inlet channel and symmetrical in the precombustion chamber seat of honour 20
Setting, two gas inlet channels, four third through-holes 24 and six the second cooling water channels are staggered setting.The precombustion chamber seat of honour 20
Top outer wall on be provided with second annular groove, O-ring 26 is arranged in the second annular groove, so that the precombustion chamber seat of honour
The outer wall on 20 top and the inner wall of precombustion chamber water jacket 50 seal；There is third annular on the outer wall of the lower part at the precombustion chamber seat of honour 20
Groove is arranged with O-ring 26 on the third annular groove, so that the outer wall of the lower part at the precombustion chamber seat of honour 20 and pre-chamber cavity shell
10 inner sealing.In addition, check valve 27 is provided in four third through-holes 24, so that air is unidirectional out of third through-hole 24
It enters in pre-chamber cavity 11.
Fig. 4 is the structural schematic diagram of the embodiment of the present invention Flame nozzle, wherein Fig. 4 a is facing for flame-thrower nozzle
Figure, Fig. 4 b are the top view of Fig. 4 a, and Fig. 4 c is the cross-sectional view in the direction D-D in Fig. 4 b, and Fig. 4 d is the section view in the direction E-E in Fig. 4 b
Figure, Fig. 4 e are the cross-sectional view in the direction F-F in Fig. 4 a.
As shown in figs. 4a-4e, flame-thrower nozzle 30 is connect with the lower part of pre-chamber cavity shell 10, it includes installation set 31 and circle
Column casing body 32.
The outer wall of 31 upper end of installation set has annular groove (not marking in figure), is provided with O-ring 26 and pre-burning on annular groove
The inner wall of room water jacket 50 seals, and the upper end of installation set 31 and the lower end of pre-chamber cavity shell 10 connect together, for the company of sealing
Connect installation set 31 and pre-chamber cavity shell 10.In the present embodiment, the outer diameter of installation set 31 is 65mm.
The upper end of cylindrical tube 32 is connect with the lower end of installation set 31, and six that width is 1~8mm are provided on its peripheral wall
A spray orifice, this six spray orifices are equably arranged in the upper of sustained height of cylindrical tube 32, this six spray orifices are as passage of flame
321, the intracorporal flame of cylindrical drum is sprayed from passage of flame 321, and the flame penetrated through with six is additionally provided on cylindrical tube 32
Channel 321 mutually staggers several nozzle cooling water channels 322 of setting, and in the present embodiment, nozzle cooling water channel 322 has six
Item, the outer diameter 35mm of cylindrical tube 32, cylindrical tube 32 with installation set 31 be it is integrally formed, the width of passage of flame 321 is
5mm。
Spark plug pitman 40 is arranged in the through hole at the precombustion chamber seat of honour 20, its lower end and the upper end cap of spark plug 21
It connects, upper end is stretched out from precombustion chamber briquetting 60, and the lower end of spark plug pitman 40 is provided with circular hole, this circular hole is used to accommodate spark
Plug 21, the inner wall of spark plug 21 is provided with first annular groove, O-ring 26 is provided in first annular groove, so that spark plug
Pitman 40 and spark plug 21 are tightly connected, the upper end of spark plug 21 also have one pass through spark plug pitman 40 and with the external world
The connected spark plug connecting line 28 of high-voltage ignition coil, high-voltage ignition coil are controlled by the ignition module (being not drawn into figure) of internal combustion engine
System igniting.In the present embodiment, spark plug pitman 40 is made of polytetrafluoroethylene (PTFE).
50 sets of precombustion chamber water jacket on pre-chamber cavity shell 10 and the precombustion chamber seat of honour 20, its outer wall and cylinder head 200
The slot block 51 that can be plugged, the rectangular first through hole for being 2~10mm with width on slot block 51 are provided between inner wall
(being not drawn into figure), the first through hole is as intake tunnel, and the cooling water in water circulation pipe enters from intake tunnel, in this reality
It applies in example, the width of intake tunnel is 4mm.
There is the second annular gap, second ring between the inner wall of precombustion chamber water jacket 50 and the outer wall of pre-chamber cavity shell 10
Shape gap is connected to as the first cooling water channel 52, the lower end of the first cooling water channel 52 with six nozzle cooling water channels 322, upper end with
The connection of second cooling water channel.The outer wall on the top of precombustion chamber water jacket 50 is provided with fourth annular groove, is arranged on the groove O-shaped
Circle 26, for being sealed with the inner wall of cylinder head 200.
The upper end at precombustion chamber briquetting 60 and the precombustion chamber seat of honour 20 is fixed by screw, it is used to fix the precombustion chamber seat of honour 20,
Air inlet hole 61 is horizontally arranged in precombustion chamber briquetting 60, the right end of air inlet hole 61 is connected to air inlet channel 22, air inlet hole 61
Left end be connected to air inlet pipeline.Annular effluent trough 62 is additionally provided on precombustion chamber briquetting 60, annular effluent trough 62 and second is cold
But water channel is connected to, and the cooling water after heat exchange flows in annular effluent trough 62 from the second cooling water channel, then is flowed by annular effluent trough 62
Out.
Air inlet unit 70 is connected to by air inlet pipeline 71 with air inlet hole 61, it is used to suck extraneous air and will be empty
Tympanites enters into air inlet hole 61, then is entered in air inlet channel 22 by air inlet hole 61, and air inlet unit 70 includes pumping
Equipment 72, air filtering core 73 and aerial cooler 74.
Air-extractor 72 has air inlet and air outlet, it is used to draw extraneous air, and in the present embodiment, pumping is set
Standby 72 be turbocharger, it is driven by the high-temp waste gas that internal combustion engine itself generates, in this way, realizing the effective and reasonable land productivity of resource
With, avoid in addition configuration equipment caused by the wasting of resources.
Air filtering core 73 is mounted by means of bolts at the air inlet of turbocharger, it is used to filter out the ash in air
Dirt, the grains of sand.In the present embodiment, air filtering core 73 is air filter filter core.
Aerial cooler 74 is connected to the gas outlet of turbocharger, and the air that it is used to suck turbocharger carries out
It cools.The gas outlet of aerial cooler 74 is connected to air inlet pipeline 71.
Cooling water inlet unit 80 includes water circulation pipe 81 and water circulating pump 82.
Water circulation pipe 81 is used to convey cooling water, and the water after exchanging heat with pre-chamber cavity shell 10 and the precombustion chamber seat of honour 20 exists
It is cooled down in water circulation pipe 81 and by external air-cooler (being not drawn into figure), water after cooling returns again to logical to water inlet
In road, nozzle cooling water channel 322, the first cooling duct 52 and the second cooling duct, thus to pre-chamber cavity shell 10 and in advance
The combustion room seat of honour 20 carries out cooling again, cools down, and realizes recycling for water, and water circulation pipe 81 has water inlet end and water outlet, into
Water end (W.E.) is connected to annular effluent trough 62, and water outlet is connected to intake tunnel, and in the present embodiment, water circulation pipe 81 is by stainless steel
Pipe is formed by connecting, further, it is also possible to using copper pipe or rubber tube.
Water circulating pump 82 is mounted on water circulation pipe 81, it is used to pressurize to cooling water and pump cooling water, is made
Cooling water is obtained to enter in intake tunnel by water circulation pipe 81.In the present embodiment, water circulating pump 82 uses high temperature magnetic force
Pump, further, it is also possible to using high-temperature centrifugal pump.
Two control valves 90 are separately positioned on air inlet pipeline 71 and water circulation pipe 81, are respectively intended to control cooling air
With being passed through for cooling water, two control valves 90 can be opened individually also to be opened simultaneously.
Controller (not shown) is connect with two control valves 90, for controlling the unlatching and pass of two control valves 90
It closes, in the present embodiment, controller is time controller, it can control air inlet unit and be passed through cooling air and control cold
But water inlet unit is passed through duration and the time interval of cooling water, so that cooling water and cooling air are alternately passed through, for example,
Controller works so that the control valve 90 on air inlet pipeline 71 is opened, and the control valve 90 of water-circulating pipe road 81 is closed, and is first passed through
Ten minutes cooling airs enter pre-cooling to pre-chamber cavity shell, then controller work so that water-circulating pipe road control valve
90 open, and the control valve 90 on air inlet pipeline 71 is closed, and are passed through cooling water within next ten minutes, so that cooling water and cooling sky
Gas is alternately passed through, and can also be passed through cooling water and cooling air simultaneously certainly, and the time being passed through can also be controlled by the setting time
Device is changed.
The working principle of the water cooling air-cooled type pre-burning ignition system 100 of the present embodiment are as follows:
The water cooling air-cooled type pre-burning device 100 of this implementation is respectively adopted cooling water and alternately connects to spark plug with cooling air
Stick 40, spark plug 21, the precombustion chamber seat of honour 20, pre-chamber cavity shell 10 and flame-thrower nozzle 30 are cooled down, are radiated.
Lesser short arrow indicates that cooling air flows direction in Fig. 1, and controller controls the control valve on air inlet pipeline 71
90 open, and the control valve 90 on water circulation pipe 81 is closed, and the cooling air sucked from ambient air source passes through air inlet pipeline 71
It enters in air inlet hole 61, is then entered in air inlet channel 22 by air inlet hole 61, then, cooling air is from air inlet
Channel 22 enters in four third through-holes 24, using the control of check valve 27, enters in pre-chamber cavity 11, in precombustion chamber
It mixing and lights a fire with the fuel gas being passed through from gas inlet channel in chamber 11, flame is sprayed from six passage of flame 321, this
In the process, cooling air realize to spark plug pitman 30, spark plug 21, the precombustion chamber seat of honour 20, pre-chamber cavity shell 10 with
And cooling, the heat dissipation of flame-thrower nozzle 30.
Biggish short arrow indicates flow of cooling water direction in Fig. 1, and controller controls the control valve 90 on air inlet pipeline 71
It closes, the control valve 90 on water circulation pipe 81 is opened, and the cooling water flowed into from water circulation pipe 81 is flowed by intake tunnel
In six nozzle cooling water channels 322, cooling water is flowed into the first cooling water channel 52 from nozzle cooling water channel 322 again, then by
One cooling water channel 52 is flowed into the second cooling water channel, then flows in annular effluent trough 62, finally returns to from the second cooling water channel
Into water circulation pipe 81, this process, cooling water is simultaneously to the precombustion chamber seat of honour 20, pre-chamber cavity shell 10 and flame-thrower nozzle
30 contact heat-exchangings, thus to the cooling of the precombustion chamber seat of honour 20, pre-chamber cavity shell 10 and nozzle 12, heat dissipation.
<variation>
Fig. 5 is the structural schematic diagram of water cooling air-cooled type pre-burning ignition system in variation of the invention.
As shown in figure 5, in this variation, identical volume is given to this variation of structure same as the previously described embodiments
Number, and save identical explanation.
Air inlet unit 70 includes air-extractor 72, air filtering core 73, aerial cooler 74, air accumulator 75, air pressure
Contracting machine 76 and valve for pressure difference 77.
Be divided into two pipelines on air inlet pipeline 71, a pipeline is connected to the gas outlet of air accumulator 75, air accumulator 75 into
Port is connected to air compressor 76, and air compressor 76 is used as air inlet source, and the air that it has been compressed enters air accumulator 75
It stores.
Structure in another pipeline is identical as structure in embodiment, and the infall between two pipelines is provided with valve for pressure difference
77, sub-cooled air enters admission line 71 through the automatic adjustment of valve for pressure difference 77, is finally sent into pre-chamber cavity 11.It is managed in this
On the road, air is drawn into turbocharger by air filtering core 73, through the sub-cooled air after cooling of aerial cooler 74
Control pressure as valve for pressure difference 77.The pressure difference that valve for pressure difference 77 is adjusted by the adjusting nut in valve for pressure difference, so that valve for pressure difference 77
The pressure of admission line 71 is consistently greater than turbocharger supercharged 0.2~0.5Kg of pressure after control, in this way can be to precombustion chamber
Chamber 11 preferably carries out scavenging, thus preferably to spark plug pitman 30, spark plug 21, the precombustion chamber seat of honour 20, pre-chamber cavity
Shell 10 and flame cool down, cool down, radiate.
The action and effect of embodiment
The water cooling air-cooled type pre-burning ignition system according to involved in the present embodiment, because the pre-burning ignition system has pre-burning
Chamber shell, the precombustion chamber seat of honour, flame-thrower nozzle, spark plug pitman, precombustion chamber water jacket, air inlet unit and cooling water into
Gas unit, one side intake tunnel can be introduced cooling water to nozzle cooling water channel by water circulation pipe, and cooling water is then from spray
Mouth cooling water channel is flowed into the first cooling water channel, then is discharged after being flowed into the second cooling water channel from the first cooling water channel；Another party
Face, air inlet unit are blasted air into air inlet channel by air inlet pipeline from after ambient inlet air, air from
Air inlet channel, which enters to after third through-hole, enters pre-chamber cavity from third through-hole again, and by arranging after pre-chamber cavity from spray orifice
Out.Also, air intake conduit and water circulation pipe can be controlled by controller, so, the water jacket air-cooled type of the present embodiment is pre-
Fire ignition system can not only cooling to the precombustion chamber seat of honour, spark plug, pre-chamber cavity shell and nozzle, heat dissipation, Er Qieneng
Enough realize alternately is passed through cooling air and cooling water, pre-chamber cavity shell is pre-chilled by first leading to cooling air, then be passed through cooling
Water further cools down, and the case where so as to prevent pre-chamber cavity shell to be quenched, increases its service life.
In addition, in the present embodiment, due to being provided with check valve in four third through-holes, cooling air can only be from
Three through-holes enter in pre-chamber cavity, and are unable to reverse movement, can guarantee the gas safe mixing in pre-chamber cavity, pre-burning in this way
The flame that room explosion generates, which cannot be tempered, flows into the precombustion chamber seat of honour and its pipeline, to guarantee the safe operation of internal combustion unit.
In addition, in the present embodiment, since spark plug pitman lower end encases spark plug upper end, and spark plug and connection
Stick is sealed with O-ring, in such manner, it is possible to prevent air from leaking out from spark plug pitman, spark plug pitman uses polytetrafluoroethylene (PTFE)
Material, heatproof insulation prevent spark plug from altering fire.
In addition, in the present embodiment, since the outer wall of the lower part at the precombustion chamber seat of honour is equipped with third annular groove, third annular
The inner wall that groove is equipped with O-ring and pre-chamber cavity shell seals, enable the precombustion chamber seat of honour completely with pre-chamber cavity shell
Body palette, prevents cooling air from leaking out, and prevents from causing danger in pre-burning, extends the precombustion chamber seat of honour and pre-chamber cavity shell
Service life.
In addition, in the present embodiment, due to being provided with inserting of can plugging between cylinder head inner wall and precombustion chamber water jacket
Geosynclinal block, when introducing cooling water for a long time from engine cycle pipeline, the scale in cooling water can remain in the through-hole of slot block
In, cooling effect is likely to impacted, at this point it is possible to extract slot block and clean to it, enables cooling water suitable
Smooth slave intake tunnel enters, and cooling efficiency is got higher.
In addition, in the present embodiment, since the outer wall of pre-chamber cavity shell is provided with radiating fin, on the one hand, so that connecing
The area of touching increases so that the high temperature heat on pre-chamber cavity shell can quickly pass to it is cold in the first cooling water channel
But in water；On the other hand, radiating fin can reinforce the flowing of water, generate stronger sinuous flow, heat transfer coefficient is bigger, heat dissipation effect
Also more preferable.Since such setting enables to pre-burning room housing preferably to radiate, internal combustion engine is prevented to be burned.
Above embodiment is preferred case of the invention, the protection scope being not intended to limit the invention.
Claims (10)
1. a kind of water cooling air-cooled type pre-burning ignition system, for the internal combustion engine heat dissipation for the cylinder head with inner cavity, feature exists
In, comprising:
Pre-chamber cavity shell is embedded in the inner cavity, and inside has pre-chamber cavity；
The precombustion chamber seat of honour is arranged in the inner cavity, and one end is connect with the pre-chamber cavity shell, and inside has for installing fire
The through hole of Hua Sai；
Flame-thrower nozzle is removably mounted on the pre-chamber cavity shell, including the cylindrical tube with cavity；
Spark plug pitman, be arranged in the through hole, one end is connect with the spark plug, the spark plug pitman with it is described
There is first annular gap, the first annular gap is as air inlet channel between the inner wall at the precombustion chamber seat of honour；
Precombustion chamber water jacket covers on the pre-chamber cavity shell and the precombustion chamber seat of honour, the outer wall of one end and the cylinder
It is provided with first through hole between the inner wall of lid, the first through hole is as intake tunnel；
Air inlet unit is connected to by air inlet pipeline with the air inlet channel, for sucking extraneous air and will be empty
Tympanites enters into the air inlet channel；And
Cooling water inlet unit has water inlet end and water outlet, for conveying cooling water, including what is be connected to the intake tunnel
Water circulation pipe and the water circulating pump being arranged on the water-circulating pipe road,
Wherein, it is provided with the passage of flame of a plurality of perforation on the cylindrical tube and is staggered setting with a plurality of passage of flame
Several nozzle cooling water channels,
The outer wall of the inner wall of the precombustion chamber water jacket and the pre-chamber cavity shell has the second annular gap, between second annular
Gap is connected to as the first cooling water channel with the nozzle cooling water channel,
Multiple second through-holes are provided in the wall at the precombustion chamber seat of honour, second through-hole is as the second cooling water channel, one end
It is connected to first cooling water channel,
Be additionally provided at least one third through-hole in the wall at the precombustion chamber seat of honour, one end of the third through-hole and the air into
The connection of gas channel, the other end are connected to the pre-chamber cavity,
Cooling water is introduced to the nozzle cooling water channel again after introducing cooling water by the water circulation pipe by the intake tunnel,
The cooling water is flowed into first cooling water channel from the nozzle cooling water channel, then is flowed into institute from first cooling water channel
It is discharged after stating the second cooling water channel,
The air inlet unit is blasted air to the air inlet channel by air inlet pipeline after ambient inlet air
In, air enters to after the third through-hole from the air inlet channel enters the precombustion chamber from the third through-hole again
Chamber, and by being discharged after the pre-chamber cavity from the passage of flame.
2. water cooling air-cooled type pre-burning ignition system according to claim 1, which is characterized in that further include:
At least two control valves are separately positioned on the air inlet pipeline and water-circulating pipe road, for controlling.
3. water cooling air-cooled type pre-burning ignition system according to claim 2, which is characterized in that further include:
At least two controllers are accordingly connect with the control valve, for controlling the open and close of the control valve.
4. water cooling air-cooled type pre-burning ignition system according to claim 3, it is characterised in that:
Wherein, the controller is time controller, for controlling the air inlet unit and the cooling water inlet unit
On-off duration and time interval.
5. water cooling air-cooled type pre-burning ignition system according to claim 1, which is characterized in that further include:
Precombustion chamber briquetting is fixedly connected with the other end at the precombustion chamber seat of honour, for fixing the precombustion chamber seat of honour and described
Precombustion chamber water jacket, is provided with air inlet hole, and one end of the air inlet hole is connected to the air inlet channel, the other end with it is described
Air inlet pipeline connection.
6. water cooling air-cooled type pre-burning ignition system according to claim 1, it is characterised in that:
Wherein, the air inlet unit further includes air accumulator, which passes through the air inlet pipeline and the air inlet
Channel connection, for storing compressed air and provides air in the air inlet channel.
7. water cooling air-cooled type pre-burning ignition system according to claim 6, it is characterised in that:
Wherein, the air inlet unit further includes air compressor, which is connected to the air accumulator, and being used for will
Extraneous air is compressed and is stored into the air accumulator.
8. water cooling air-cooled type pre-burning ignition system according to claim 1, it is characterised in that:
Wherein, it is provided with valve for pressure difference on the air inlet pipeline, which is used to control the admission pressure on the air inlet pipeline.
9. water cooling air-cooled type pre-burning ignition system according to claim 1, it is characterised in that:
Wherein, there are six spray orifices, this six spray orifices to be equably arranged in the institute of sustained height for tool on the peripheral wall of the cylindrical tube
It states on the peripheral wall of cylindrical tube, the spray orifice is as the passage of flame.
10. water cooling air-cooled type pre-burning ignition system according to claim 1, it is characterised in that:
Wherein, the inner wall of the cylinder head lower part is provided with slot block, and the first through hole is arranged on the slot block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710176569.7A CN107143416B (en) | 2017-03-23 | 2017-03-23 | Water cooling air-cooled type pre-burning ignition system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710176569.7A CN107143416B (en) | 2017-03-23 | 2017-03-23 | Water cooling air-cooled type pre-burning ignition system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107143416A CN107143416A (en) | 2017-09-08 |
| CN107143416B true CN107143416B (en) | 2019-06-04 |
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| CN201710176569.7A Active CN107143416B (en) | 2017-03-23 | 2017-03-23 | Water cooling air-cooled type pre-burning ignition system |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BRPI0921690A2 (en) * | 2008-12-26 | 2016-02-16 | Mitsubishi Heavy Ind Ltd | gas engine with spark plug and hole cooling holes |
| AT514813B1 (en) * | 2013-09-25 | 2015-04-15 | Ge Jenbacher Gmbh & Co Og | Arrangement of a cylinder head and a Vorkammersystem |
| AT514560B1 (en) * | 2013-09-25 | 2015-02-15 | Ge Jenbacher Gmbh & Co Og | cylinder head |
| CN103821606B (en) * | 2014-03-03 | 2016-04-06 | 潍柴西港新能源动力有限公司 | Pre-burning generator |
| US9617908B2 (en) * | 2015-05-11 | 2017-04-11 | Caterpillar Inc. | Fuel combustion system, nozzle for prechamber assembly having coolant passage, and method of making same |
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